Associate Professor Marjorie Valix

School of Chemical and Biomolecular Engineering

J01 - Chemical Engineering Building
The University of Sydney

Telephone +61 2 9351 4995
Fax +61 2 9351 2854

Website Water and the environment

Mineral and Materials Processing Research Unit

Sewer Corrosion & Odour Research (SCORe)

Biographical details

Marjorie Valix is an Associate Professor in the School of Chemical and Biomolecular Engineering at the University of Sydney, where she has been a faculty member since 1998. Marjorie completed her PhD and her undergraduate studies at the University of NSW South Wales. Her research interests include pyrometallurgical, hydrometallurgical and biohydrometallurgical processing of minerals and wastes, adsorption and adsorbent development and cement and polymeric lining degradation as a result of microbiological attack. She currently heads the Material and Mineral Processing Research Unit.

Marjorie has served on over twenty five international conferences and various industry focused workshops including 2006 AXAA-National Series, 2008 WSAA-Odour and Corrosion Workshop 2008 and 2010 WSAA Coatings Workshop and Training. Marjorie has served as the associate dean, first year for the Faculty of Engineering from 2006 to 2009 and is currently the school first year coordinator and the school international director.

Research interests

Corrosion caused by acid-generating micro-organisms causes millions of dollars worth of damage to infrastructure every year. Associate Professor Marjorie Valix is researching this natural process with a view to mitigating its effects - and harnessing it for more constructive purposes.

"Certain micro-organisms can generate destructive acids that attack particular materials and cause damaging and costly corrosion. In Australia alone, our water authorities spend more than $100 million each year tackling this issue.

"Developing our understanding of microbially induced corrosion can help us to prevent or slow it, through such means as using protective coatings to hinder its progress.

"But this same destructive process also has great constructive potential, such as in the processing of minerals and the management of waste.

"The challenges involved in extracting useful minerals from ores - and, interestingly, also in the management of waste - include the presence of other less valued materials, high processing costs, and environmental considerations. Understanding and harnessing the natural ability of micro-organisms to break down certain materials therefore has huge potential in addressing these issues in a cost-effective and ecologically sensitive manner.

"Unlike chemicals, micro-organisms can be 'trained' to tolerate toxic environments and to generate specific enzymes that catalyse degradation of certain materials. Learning how to harness this behaviour is exciting.

"I have been working in this field for about 14 years. Being at the University of Sydney is very conducive to my research, because of its world-leading facilities and researchers."

Teaching and supervision

CHNG1103 - Material and Energy Transformations Introduction

CHNG2806 - Materials Purification and Recovery

CHNG3041 - Exchange Program 3A

CHNG3042 - Exchange Program 3B

CHNG4041 - Exchange Program 4A

CHNG4042 - Exchange Program 4B

CHNG5706 - Foundations of Materials Purification and Recovery

CHNG5707 - Foundations of Material and Energy Transformations

ENGG1800 - Introduction to Engineering Disciplines

Current projects

Mineral Processing

  • Hydrometallurgical and Pyrometallurgical Processing of Low Grade Oxide Ores.
  • Biological Leaching of Low Grade Oxide Ores.
  • Application of Synchrotron Radiation in Mineral Processing.

Adsorption

  • Adsorbent Development from Agricultural and other Wastes.
  • Bio-sorbent Development.
  • Modeling of Adsorption Processes
  • (Specific applications in mineral processing, food processing and environmental protection)

Process Technologies

  • Extraction and Development of Refining Technologies of Sugar Cane Waxes, Sterols and Policosanol.
  • Low Temperature Hydropyrolysis of Wastes.
  • Gasification and Combustion of Biomass.

Associations

  • Graduate member, Institution of Chemical Engineers
  • Member, American Chemical Society
  • Member Australian Society of Sugar Cane Technologist

Awards and honours

  • International Patent, Valix M, "Food grade wax and process for preparing same", patent in application in name of the University of Sydney, Patent Numbers: 719777 (Australia, granted), 22832 (Cuba, granted), 10/682513 (US impending).
  • Dean's Award for Service to the Faculty (2002).
  • Invited Presentations
    - "Use of Synchrotron in the Mineral Processing Industry", Industry briefing on synchrotron applications held by the Department of State and Regional Development, February 19 2001.
    - WMC (Western Mining Corp.) Sponsored Workshop on Application of plant ecology to the mining industry, August 10 -11 2001, Red Hill Victoria.
    - "Measurement of Total Surface Area", Particle Characterisation '99, November 16-18 1999
    - "Reduction of Nickel Laterite Ores", Chemistry Seminars, The University of Sydney, 1999.
  • Committee Member for the IChemE, Townsville Regional Sub-Branch Participation and attendance of Technical Seminars Provided by RACI (NQ Branch), IChemE (NQ Branch) and AusIMM (NQ-Townsville Branch).
  • Editorial Member of the Journal of European Mineral Processing and Environmental Protection
  • Session Chair for the Food and Products Session, Chemeca '99, Newcastle.
  • Member of the Centre of Heavy Metals, University of Sydney.
  • Work on the use of In-situ Synchrotron XRD in Mineral Phase Analysis featured in case study in use of Synchrotron by the Victorian Department of Innovation, Industry and Regional Development.
  • Work on Synchrotron featured in "A study examining the implications of the Australian Synchrotron for New South Wales", a report for the NSW Government: The Australian Synchrotron - a NSW perspective (June 2005). The work highlights how synchrotron can contribute to the mining industry, and how the synchrotron can be used to research in-situ processes to be very useful.
  • Australian Mining Monthly features work on Bioleaching of Nickel Laterite Ores (April 2005).

Selected grants

2014

  • Sydney Opera House - Concrete Conservation Strategy Project; Rasmussen K, Ranzi G, Dias da Costa D, Valix M, Abbas A, Fiorito F, Logan C; SYDNEY OPERA HOUSE TRUST/Research Project.

2012

  • Simultaneous Measurements of Reaction Kinetics and Particle Distributions for Cutting-Edge Research into CO2 Storage, Catalysis and Novel Materials; Dlugogorski B, Kennedy E, Moghtaderi B, Stockenhuber M, Melchers R, Abbas A, Valix M, Harris A, Kannangara G, Bartlett J, Milev A, Tran N, May E, Rufford T, O'Neill B; Australian Research Council (ARC)/Linkage Infrastructure, Equipment and Facilities (LIEF).

2010

  • Underlying mechanisms of e-waste bioleaching and hydropyrolysis; Valix M, McKay G; Australian Research Council (ARC)/Discovery Projects (DP).

2009

  • Bioleaching e-wastes to recover resources; Valix M; DVC Research/Bridging Support Grant.
  • Optimal management of corrosion and odour problems in sewer systems; Valix M; Australian Research Council (ARC)/Linkage Projects (LP).

2008

  • Reductive activation of primary and altered ilmenite ores; Valix M; Australian Synchrotron Company Limited/International Access Program.
  • Bioleaching optimisation; Gray A, Gandel I, Valix M; Dorado Resources Pty Ltd/Research Grant.
  • Reclamating waste printed circuit boards through bioleaching and hydropyrolysis; Valix M; University of Sydney/Bridging Support.

2007

  • Biological Leaching of Zirconia Ores; Chalmers I, Valix M; BLO-Alkane Exploration Ltd/Research Grants.
  • Bioleaching optimisation; Valix M; Dorado Resources Pty Ltd/Research Grant.
  • Reductive Activation of Ilmenite Ores; Valix M, Dowling K, Grocott S; BHP Billiton Innovation Pty Ltd/Research Grant.
  • Scientific Assessment of Epoxy Resins to Protect Sewer Concrete; Valix M, Vitanage D, Bustamante H; Sydney Water Corporation/Research Grants.
  • Biological Leaching of Gilgai Ore; Valix M, Pursell D; Jervois Mining Limited/Contract Grant.

2006

  • In-Situ Phase Transformation of Dry Nickel Laterite Ores in Biological Leaching Environments; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • Biological leaching of Riverina Ores; Valix M, Gandel I; Gandel Metals/Research Grants.
  • Reductive Activation of Primary and Altered Ilmenite Ores of Leaching; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.

2005

  • Particulate Characterisation for Pharmaceutical and Engineering Applications; Coombes A, Amal R, Romagnoli J, Valix M, Langrish T, Stewart P, Yang R, Chan H; Australian Research Council (ARC)/Linkage Infrastructure, Equipment and Facilities (LIEF).
  • In-Situ Phase Transformation of Dry Nickel Laterite Ores in Biological Leaching Environments-II; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • Phase Transformation of Dry Nickel Laterite Ores In Biological Leaching Environments; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • The Speciation of Ni and Co in Metabolic Acids Solutions and Surface Complexes Adsorbed onto a Chela; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.

2004

  • Biological leaching of low grade nickel laterite ores; Valix M; Australian Research Council (ARC)/Discovery Projects (DP).
  • Microwave accelerated reaction system; Romagnoli J, Valix M, Haynes B, Petrie J; DVC Research/Equipment (Sesqui).
  • In-Situ Phase Transformation of Dry Nickel Laterite Ores in Biological Leaching Environments; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.

2001

  • Phases Identification of Chemical Leaching Residues of Laterite Ores; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • The Effect of Activators on Laterite Ores During Reduction at High Temperatures (Part II); Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • Elucidation of Gold Thiosulfate Structure in Solution and as an Adsorbed Species on Activated Carbon; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • EXAFS study of Fe-Ni alloys in ammoniacal ammonium carbonate solution; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.
  • The Effect of Activators on Laterite Ores During Reduction at High Temperatures; Valix M; Australian Nuclear Science and Technology Organisation/Research & Travel Grants.

2000

  • In-situ phase transformation of dry nickel laterite ores in biological leaching environments.; Valix M; Australian Nuclear Science and Technology Organisation/Major Research Facilities Program.
  • Chemical Engineering research; Valix M; Queensland Nickel Pty Ltd/Research Support.
  • Activation of the fibrous components of sugar cane for adsorption of heavy metals; Valix M, Jones I, Muchow R; Sugar Research and Development Corporation/Research Grant Scheme.
  • Preparation of immobilised amine ligand on activated carbon support; Valix M; University of Sydney/University Research Grant.
  • Studies on the use of flue gases for enhanced coal-bed methane recovery and the underground storage of greenhouse gas emissions; Thambimuthu K, Valix M; Australian Research Council (ARC)/Small Grants.

1999

  • SPIRT 1998: Maximisation of nickel and cobalt recoveries from low grade laterite ores C39700053; O'Connor F, Valix M.

Selected publications

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Journals

  • Hong, Y., Valix, M. (2014). Bioleaching of electronic waste using acidophilic sulfur oxidising bacteria. Journal of Cleaner Production, 65, 465-472. [More Information]
  • Chan, O., Valix, M. (2014). Thermogravimetric analysis and kinetic study of biochemically pretreated printed circuit board wastes. Waste and Biomass Valorization, 5(2), 211-222. [More Information]
  • Murayama, N., Baba, M., Hayashi, J., Shibata, J., Valix, M. (2013). Adsorption Property of Water Vapor on ALPO4-5 Synthesized From Aluminum Dross. Materials Transactions, 54(12), 2265-2270. [More Information]
  • Saidan, M., Brown, B., Valix, M. (2012). Leaching of electronic waste using biometabolised acids. Chinese Journal of Chemical Engineering, 20(3), 530-534. [More Information]
  • Valix, M., Zamri, D., Mineyama, H., Cheung, A., Shi, J., Bustamante, H. (2012). Microbiologically induced corrosion of concrete and protective coatings in gravity sewers. Chinese Journal of Chemical Engineering, 20(3), 433-438. [More Information]
  • Murayama, N., Maekawa, I., Ushiro, H., Miyoshi, T., Shibata, J., Valix, M. (2012). Synthesis of various layered double hydroxides using aluminum dross generated in aluminum recycling process. International Journal of Mineral Processing, 110 - 111(18 July 2012), 46-52. [More Information]
  • Ge, W., Zamri, D., Mineyama, H., Valix, M. (2011). Bioaccumulation of heavy metals on adapted Aspergillus foetidus. Adsorption, 17(5), 901-910. [More Information]
  • Valix, M., Mineyama, H., Chen, C., Cheung, A., Shi, J., Bustamante, H. (2011). Effect of film thickness and filler properties on sulphuric acid permeation in various commercially available epoxy mortar coatings. Water Science and Technology, 64(9), 1864-1869. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Activated carbons from bamboo scaffolding using acid activation. Separation and Purification Technology, 74(2), 213-218. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Dye adsorption onto activated carbons from tyre rubber waste using surface coverage analysis. Journal of Colloid and Interface Science, 347(2), 290-300. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Dye adsorption onto char from bamboo. Journal of Hazardous Materials, 177(1-3), 1001-1005. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Mesoporous activated carbon from waste tyre rubber for dye removal from effluents. Microporous and Mesoporous Materials, 130(1-3), 287-294. [More Information]
  • Eu, W., Cheung, A., Valix, M. (2009). Design and application of a high-temperature microfurnace for an in situ X-ray diffraction study of phase transformation. Journal of Synchrotron Radiation, 16(6), 842-848. [More Information]
  • Tang, J., Valix, M. (2009). Leaching kinetics of limonite and nontronite ores. International Journal of Environment and Waste Management (IJEWM), 3(3/4), 244-252. [More Information]
  • Valix, M., Cheung, A., McKay, G. (2009). Sulfur Fixation on Bagasse Activated Carbon by Chemical Treatment and its Effect on Acid Dye Adsorption. Adsorption, 15, 453-459. [More Information]
  • Valix, M., Thangavelu, V., Ryan, D., Tang, J. (2009). Using halotolerant Aspergillus foetidus in bioleaching nickel laterite ore. International Journal of Environment and Waste Management (IJEWM), 3(3/4), 253-264. [More Information]
  • Deepatana, A., Valix, M. (2008). Comparative adsorption isotherms and modeling of nickel and cobalt citrate complexes onto chelating resins. Desalination, 218(1-3), 334-342. [More Information]
  • Valix, M., Cheung, A., Zhang, K. (2008). Role of chemical pre-treatment in the development of super-high surface areas and heteroatom fixation in activated carbons prepared from bagasse. Microporous and Mesoporous Materials, 116(1-3), 513-523.
  • Deepatana, A., Valix, M. (2008). Steric hindrance effect on adsorption of metal-organic complexes onto aminophosphonate chelating resin. Desalination, 218(1-3), 297-303. [More Information]
  • Valix, M., Cheung, A., Zhang, K. (2008). Textural and surface chemistry of activated bagasse and its role in the removal of chromium ions from solution. Adsorption, 14(4-5), 711-718. [More Information]
  • Katyal, S., Valix, M., Thambimuthu, K. (2007). Study of parameters affecting enhanced coal bed methane recovery. Energy Sources. Part A. Recovery, Utilization, and Environmental Effects, 29(3), 193-205.
  • Le, L., Tang, J., Ryan, D., Valix, M. (2006). Bioleaching nickel laterite ores using multi-metal tolerant Aspergillus foetidus organism. Minerals Engineering, 19(12), 1259-1265.
  • Gomes, V., Barton, G., Petrie, J., Romagnoli, J., Holt, P., Abbas, A., Cohen, B., Harris, A., Haynes, B., Langrish, T., Orellana, J., See, H., Valix, M., White, D. (2006). Chemical Engineering Curriculum renewal. Education for Chemical Engineers, 1(1), 116-125.
  • Deepatana, A., Tang, J., Valix, M. (2006). Comparative study of chelating ion exchange resins for metal recovery from bioleaching of nickel laterite ores. Minerals Engineering, 19(12), 1280-1289.
  • Thangavelu, V., Tang, J., Ryan, D., Valix, M. (2006). Effect of saline stress on fungi metabolism and biological leaching of weathered saprolite ores. Minerals Engineering, 19(12), 1266-1273.
  • Tang, J., Valix, M. (2006). Leaching of low grade limonite and nontronite ores by fungi metabolic acids. Minerals Engineering, 19(12), 1274-1279.
  • Deepatana, A., Valix, M. (2006). Recovery of nickel and cobalt from organic acid complexes: Adsorption mechanisms of metal-organic complexes onto aminophosphonate chelating resin. Journal of Hazardous Materials, 137(2), 925-933. [More Information]
  • O'Connor, F., Cheung, A., Valix, M. (2006). Reduction roasting of limonite ores: effect of dehydroxylation. International Journal of Mineral Processing, 80(2), 88-99.
  • Valix, M., Cheung, A., Zhang, K. (2006). Role of heteroatoms in activated carbon for removal of hexavalent chromium from wastewaters. Journal of Hazardous Materials, 135(1-3), 395-405. [More Information]
  • Valix, M., Cheung, A., McKay, G. (2006). Roles of the textural and surface chemical properties of activated carbon in the adsorption of acid blue dye. Langmuir, 22(10), 4574-4582.
  • Thangavelu, V., Tang, J., Ryan, D., Valix, M. (2005). Effect of Saline Stress on Fungi Metabolism and Biological Leaching of Weathered Saprolite Ores. 12, 1266-1273.
  • Zhang, K., Cheung, A., Valix, M. (2005). Roles of physical and chemical properties of activated carbon in the adsorption of lead ions. Chemosphere, 60(8), 1129-1140. [More Information]
  • Valix, M., Cheung, A., McKay, G. (2004). Preparation Of Activated Carbon Using Low Temperature Carbonisation And Physical Activation Of High Ash Raw Bagasse For Acid Dye Adsorption. Chemosphere, 56(5), 493-501. [More Information]
  • Valix, M., Loon, L. (2003). Adaptive Tolerance Behaviour of Fungi in Heavy Metals. Minerals Engineering, 16(3), 193-198.
  • Syna, N., Valix, M. (2003). Assessing the Potential of Activated Bagasse as Gold Adsorbent for Gold-Thiourea. Minerals Engineering, 16(6), 511-518.
  • Katyal, S., Thambimuthu, K., Valix, M. (2003). Carbonisation of bagasse in a fixed bed reactor: influence of process variables on char yield and characteristics. Renewable Energy, 28(7), 713-725.
  • Syna, N., Valix, M. (2003). Modelling of Gold (I) Cyanide Adsorption Based on the Properties of Activated Bagasse. Minerals Engineering, 16(5), 421-427.
  • Valix, M., Cheung, A. (2002). Effect of sulfur on the mineral phases of laterite ores at high temperature reduction. Minerals Engineering, 15(7), 523-530.
  • Valix, M., Cheung, A. (2002). Study of phase transformation of laterite ores at high temperature. Minerals Engineering, 15(8), 607-612.
  • Valix, M., Usai, F., Malik, R. (2001). Fungal Bio-Leaching of Low Grade Laterite Ores. Minerals Engineering, 14 No 2, 197-203.
  • Valix, M., Tang, J., Malik, R. (2001). Heavy Metal Tolerance of fungi. Minerals Engineering, 14(5), 499-505.
  • Valix, M., Tang, J., Cheung, A. (2001). The effects of mineralogy on the biological leaching of nickel laterite ores. Minerals Engineering, 14 No 12, 1629-1635.
  • Valix, M., Malik, R., Usai, F. (2001). The Electro-sorption properties of nickel on laterite gangue leached with an organic chelating acid. Minerals Engineering, 14(2), 205-215.

Conferences

  • Sendanayaka Achchige, R., Vitanage, D., Bustamante, H., De Grazia, J., Kuen, T., Nazimek, J., Evans, T., Valix, M. (2013). The effect of moisture on bonding behaviour of epoxy on concrete. The 4th Asia-Pacific Conference on FRP in Structures (APFIS 2013), Melbourne, Vic: Swinburne University of Technology.
  • Chan, O., Valix, M. (2013). The role of acid transport in the Bio-Hydropyrolysis of epoxy waste. International Conference on Solid Waste 2013, Hong Kong: Hong Kong Baptist University.
  • Saidan, M., Valix, M. (2011). Bioleaching of Copper from Electronic Waste Using Aspergillus Niger and Acidithiobacillus. Chemeca 2011: Engineering a Better World, Sydney: Engineers Australia.
  • Bou Karam, N., Mineyama, H., Valix, M., Abbas, A. (2011). Carbon dioxide sequestration by carbonation of mine tailings. Chemeca 2011: Engineering a Better World, Sydney: Engineers Australia.
  • Saidan, M., Linkson, P., Valix, M. (2011). Secondary Reactions in the E-waste Bioleaching. Chemeca 2011: Engineering a Better World, Sydney: Engineers Australia.
  • Valix, M., Zamri, D., Mineyama, H., Cheung, A., Bustamante, H. (2010). Successive Growth of Micro-organisms in Corrosion of Concrete and Protective Coatings in Gravity Sewers, AUSTRALIA. SPN6 Conference, publisher: publisher.
  • Eu, W., Cheung, A., Valix, M. (2009). Enhanced Titanium Production by Selective Pre-Reduction of Ilmenite. 8th World Congress of Chemical Engineering WCCE 2009, Canada: Canadian Society for Chemical Engineering.
  • Zhang, K., Cheung, A., Valix, M. (2009). Generating High Surface Area Activated Carbons by Intercalation of Bagasse. 8th World Congress of Chemical Engineering WCCE 2009, Canada: Canadian Society for Chemical Engineering.
  • Yuan, Z., Keller, Y., Bond, P., Melchers, R., Stuetz, R., Valix, M., Witherspoon, J., Bustamante, H., Vitanage, D. (2008). Corrosion and odour management in sewers: the state of the art and key challenges. IWA World Water Congress, vienna: IWA Publishing.
  • Eu, W., Cheung, A., Valix, M. (2008). Investigation of ilmenite reduction behaviour using in-situ synchrotron radiation based X-ray powder diffraction. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Syna, N., Cheung, A., Valix, M. (2008). Modelling of Gold (I) Bis-thiourea Adsorption and Carbon Properties of Activated Bagasse. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Deepatana, A., Valix, M. (2008). Recovery of nickel and cobalt from bioleaching of nickel laterite ores by ion exchange resins. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Cheung, A., Valix, M. (2008). Role of Mineral Transformations in Sulphuric Acid Leaching of Pre-reduced Nickel Laterite Ores. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Cheung, A., Valix, M. (2008). Selective reduction roasting of limonite ores: Effect of over-reduction. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Eu, W., Valix, M., Cheung, A. (2008). The Role of Thermal Treatment on the Activation of Ilmenite Ores for Leaching. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Thangavelu, V., Ryan, D., Deepatana, A., Valix, M. (2006). Bioleaching of Nickel Laterite Ore Using Halotolerant Aspergillus Foetidus under Saline Conditions. TMS 2006 135th Annual Meeting & Exhibition, Texas: TMS Publications.
  • Deepatana, A., Valix, M. (2006). Comparative Study Of Metal- Complexes Recovery Using Iminodiacetatic And Aminophosphonate Based Chelating Resins. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M., Cheung, A., McKay, G. (2006). Empirical Modelling of the adsorption behaviour of acid blue dye. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M., Orellana, J. (2006). First Year Chemical Engineering Experience Under The Flexible First Year Program. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M. (2006). Invited Conference Presentation: Transforming Our Capabilities to Understand Mineral Processing Systems Through In Situ Synchrotron Radiation. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Deepatana, A., Valix, M. (2006). Ion Exchange Recovery of Nickel and Cobalt from Metal-Organic Complexes Generated in Bioleaching of Low Grade Nickel Laterite Ores. TMS 2006 135th Annual Meeting & Exhibition, Texas: TMS Publications.
  • Deepatana, A., Tang, J., Valix, M. (2006). Kinetics of Limonite and Nontronite Ore Leaching by Fungi Metabolic Acids, Separation Technology for Aqueous Processing. TMS 2006 135th Annual Meeting & Exhibition, Texas: TMS Publications.
  • Tang, J., Valix, M. (2006). Leaching of Low-Grade Nickel Ores by Fungi Metabolic Acids. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Online: The Berkeley Electronic Press.
  • Deepatana, A., Valix, M. (2006). Recovery Of Nickel And Cobalt From Organic Acid Complexes Using Aminophosphonate Chelating Resin. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M., Cheung, A., McKay, G. (2006). The effect heteroatoms on the surface chemistry and adsorptive removal of Cr(Vi) from waste waters. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M. (2006). Transforming Our Capabilities to Understand Mineral Processing Systems Through In Situ Synchrotron Radiation. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Thangavelu, V., Tang, J., Ryan, D., Valix, M. (2006). Use Of Halotolerant Organisms In Biological Leaching Of Weathered Saprolite Ores. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Le, L., Ryan, D., Valix, M. (2006). Using Multi-Metal Tolerant Aspergillus Foetidus In Bioleaching Saprolitic Nickel Laterite Ores. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Le, L., Tang, J., Ryan, D., Valix, M. (2005). Bioleaching Nickel Laterite Ores using Multi-Metal Tolerant Aspergillus Foetidus Organism. 1st International Symposium on Processing of Nickel Ores & Concentrates (Nickel Processing 05). Elsevier.
  • Valix, M., Tang, J., Cheung, A., Deepatana, A. (2005). Biological Leaching Of Nickel Laterites: Use Of Synchrotron Based X-Ray Diffraction In Elucidating The Amenability Of Laterite Minerals To Fungi Metabolic Acids (POSTER). Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Tang, J., Valix, M. (2005). Leaching of Low Grade Limonite and Nontronite Ores by Fungi Metabolic Acids. 1st International Symposium on Processing of Nickel Ores & Concentrates (Nickel Processing 05). Elsevier.
  • Hayashi, J., Gomes, V., Valix, M. (2005). Molecular Sieving Carbon from Acid Modified Bagasse. 33rd Australasian Chemical Engineering Conference : CHEMECA 2005 : smart solutions, doing more with less, Canberra: Curran Associates, Inc.
  • Valix, M., O'Connor, F., Mui, E., Cheung, A., Deepatana, A. (2005). The Use of In-Situ Synchrotron X-ray Diffraction in Monitoring the effect of Sulfur Activator in Mineral Transformation of Saprolite Minerals. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Valix, M., Cheung, A., Deepatana, A. (2005). Use of In-situ Synchrotron based X-ray Diffraction in Elucidating Limonite Reduction Behaviour. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Valix, M., Cheung, A., McKay, G. (2004). Acid Blue Dye Adsorption Onto Bagasse Activated By Low Temperature Carbonisation And Physical Activation. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Deepatana, A., Valix, M. (2004). Adsorption of Metals from Metal Organic Complexes Derived from Bioleaching of Nickel Laterite Ores. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Brooklyn, N.Y.: Engineering Conferences International.
  • Deepatana, A., Valix, M. (2004). Adsorption of Metals from Metal-Organic Complexes Derived from Bioleaching of Nickel Laterite Ores. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Online: The Berkeley Electronic Press.
  • Tang, J., Tang, J., Cheung, A., Valix, M. (2004). Biological Leaching Of Nickel Laterites: Use Of Synchrotron Based X-Ray Diffraction In Elucidating Nickel Laterite Amenability To Fungi Metabolic Acids. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Zhang, K., Cheung, A., Valix, M. (2004). Contributions Of Heteroatoms To Activated Carbon Surface Acidity And Their Effects In The Removal Of Hexavalent Chromium From Wastewaters. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Tang, J., Valix, M. (2004). Leaching of Low Grade Nickel Laterite Ores by Fungi Metabolic Acids. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Online: The Berkeley Electronic Press.
  • Zhang, K., Valix, M. (2004). Preparation Of Multiporous High Surface Area Activated Carbon Using Low Temperature Carbonisation And Physical Activation Of High Ash Raw Bagasse. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Valix, M., O'Connor, F., Mui, E., Cheung, A. (2004). The Use of In-Situ Synchrotron X-Ray Diffraction in Monitoring The Effect Of Sulfur Activator In Mineral Transformation Of Saprolite Minerals. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Valix, M., Cheung, A. (2004). Use Of In-Situ Synchrotron Based X-Ray Diffraction In Elucidating Limonite Reduction Behaviour. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Valix, M. (2003). Application of Synchrotron Radiation in Resolving Issues in Mineral Reactivity. Synchrotron Mineral Workshop, Not Published: Not Published.
  • Tang, J., Valix, M. (2002). Development of Fungi Tolerance to Heavy Metals. Minerals Engineering 02. Elsevier.
  • Valix, M., Tang, J. (2002). Leachability of low grade nickel laterite ores in organic acids. APCChE 2002, New Zealand: University of Canterbury.
  • Syna, N., Valix, M. (2002). Modelling of Gold (I) Cyanide Adsorption as a function of the Properties of Activated Bagasse. Minerals Engineering 02. Elsevier.
  • Valix, M., Katyal, S. (2002). Thermal Carbonisation of Bagasse. APCChE 2002, New Zealand: University of Canterbury.
  • Syna, N., Valix, M. (2001). Amenability of Sugarcane Bagacillo to Chemical Activation for Gold (I) Bis-Thiourea Adsorption. 2001 Conference of the Australian Society of Sugar Cane Technologists, : UNSW Australian Defence Force Academy.
  • Valix, M., Syna, N. (2001). Gold (I) Thiourea Adsorption on Fine Particle Activated Bagasse. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M. (2001). In-Situ Synchrotron X-Ray Diffraction in Monitoring Mineral Transformation Of Saprolite Minerals. Industry briefing on synchrotron applications, Not Published: Not Published.
  • Valix, M. (2001). Invited Conference Presentation: Bioleaching of Nickel Laterite Ores. WMC-sponsored Workshop on the application of plant ecology to the mining industry, Not Published: Not Published.
  • Valix, M., Tang, J., Malik, R. (2001). Strain Training of Heterotrophic Micro-Organisms for Heavy Metal Tolerance. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Katyal, S., Thambimuthu, K. (2001). Study of Parameters Effecting Enhanced Coal Bed Methane Recovery. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Cheung, A., Ciavarella, N., O'Connor, F. (2001). Sulfuric Acid Leaching of selectively Roasted Laterite Ores. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Tang, J. (2001). The Effects of Electrochemical Conditions on Laterite Nickel Ore Leaching with Organic Acids. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.

2014

  • Hong, Y., Valix, M. (2014). Bioleaching of electronic waste using acidophilic sulfur oxidising bacteria. Journal of Cleaner Production, 65, 465-472. [More Information]
  • Chan, O., Valix, M. (2014). Thermogravimetric analysis and kinetic study of biochemically pretreated printed circuit board wastes. Waste and Biomass Valorization, 5(2), 211-222. [More Information]

2013

  • Murayama, N., Baba, M., Hayashi, J., Shibata, J., Valix, M. (2013). Adsorption Property of Water Vapor on ALPO4-5 Synthesized From Aluminum Dross. Materials Transactions, 54(12), 2265-2270. [More Information]
  • Sendanayaka Achchige, R., Vitanage, D., Bustamante, H., De Grazia, J., Kuen, T., Nazimek, J., Evans, T., Valix, M. (2013). The effect of moisture on bonding behaviour of epoxy on concrete. The 4th Asia-Pacific Conference on FRP in Structures (APFIS 2013), Melbourne, Vic: Swinburne University of Technology.
  • Chan, O., Valix, M. (2013). The role of acid transport in the Bio-Hydropyrolysis of epoxy waste. International Conference on Solid Waste 2013, Hong Kong: Hong Kong Baptist University.

2012

  • Saidan, M., Brown, B., Valix, M. (2012). Leaching of electronic waste using biometabolised acids. Chinese Journal of Chemical Engineering, 20(3), 530-534. [More Information]
  • Valix, M., Zamri, D., Mineyama, H., Cheung, A., Shi, J., Bustamante, H. (2012). Microbiologically induced corrosion of concrete and protective coatings in gravity sewers. Chinese Journal of Chemical Engineering, 20(3), 433-438. [More Information]
  • Murayama, N., Maekawa, I., Ushiro, H., Miyoshi, T., Shibata, J., Valix, M. (2012). Synthesis of various layered double hydroxides using aluminum dross generated in aluminum recycling process. International Journal of Mineral Processing, 110 - 111(18 July 2012), 46-52. [More Information]

2011

  • Ge, W., Zamri, D., Mineyama, H., Valix, M. (2011). Bioaccumulation of heavy metals on adapted Aspergillus foetidus. Adsorption, 17(5), 901-910. [More Information]
  • Saidan, M., Valix, M. (2011). Bioleaching of Copper from Electronic Waste Using Aspergillus Niger and Acidithiobacillus. Chemeca 2011: Engineering a Better World, Sydney: Engineers Australia.
  • Bou Karam, N., Mineyama, H., Valix, M., Abbas, A. (2011). Carbon dioxide sequestration by carbonation of mine tailings. Chemeca 2011: Engineering a Better World, Sydney: Engineers Australia.
  • Valix, M., Mineyama, H., Chen, C., Cheung, A., Shi, J., Bustamante, H. (2011). Effect of film thickness and filler properties on sulphuric acid permeation in various commercially available epoxy mortar coatings. Water Science and Technology, 64(9), 1864-1869. [More Information]
  • Saidan, M., Linkson, P., Valix, M. (2011). Secondary Reactions in the E-waste Bioleaching. Chemeca 2011: Engineering a Better World, Sydney: Engineers Australia.

2010

  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Activated carbons from bamboo scaffolding using acid activation. Separation and Purification Technology, 74(2), 213-218. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Dye adsorption onto activated carbons from tyre rubber waste using surface coverage analysis. Journal of Colloid and Interface Science, 347(2), 290-300. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Dye adsorption onto char from bamboo. Journal of Hazardous Materials, 177(1-3), 1001-1005. [More Information]
  • Mui, E., Cheung, A., Valix, M., McKay, G. (2010). Mesoporous activated carbon from waste tyre rubber for dye removal from effluents. Microporous and Mesoporous Materials, 130(1-3), 287-294. [More Information]
  • Valix, M., Zamri, D., Mineyama, H., Cheung, A., Bustamante, H. (2010). Successive Growth of Micro-organisms in Corrosion of Concrete and Protective Coatings in Gravity Sewers, AUSTRALIA. SPN6 Conference, publisher: publisher.

2009

  • Eu, W., Cheung, A., Valix, M. (2009). Design and application of a high-temperature microfurnace for an in situ X-ray diffraction study of phase transformation. Journal of Synchrotron Radiation, 16(6), 842-848. [More Information]
  • Eu, W., Cheung, A., Valix, M. (2009). Enhanced Titanium Production by Selective Pre-Reduction of Ilmenite. 8th World Congress of Chemical Engineering WCCE 2009, Canada: Canadian Society for Chemical Engineering.
  • Zhang, K., Cheung, A., Valix, M. (2009). Generating High Surface Area Activated Carbons by Intercalation of Bagasse. 8th World Congress of Chemical Engineering WCCE 2009, Canada: Canadian Society for Chemical Engineering.
  • Tang, J., Valix, M. (2009). Leaching kinetics of limonite and nontronite ores. International Journal of Environment and Waste Management (IJEWM), 3(3/4), 244-252. [More Information]
  • Valix, M., Cheung, A., McKay, G. (2009). Sulfur Fixation on Bagasse Activated Carbon by Chemical Treatment and its Effect on Acid Dye Adsorption. Adsorption, 15, 453-459. [More Information]
  • Valix, M., Thangavelu, V., Ryan, D., Tang, J. (2009). Using halotolerant Aspergillus foetidus in bioleaching nickel laterite ore. International Journal of Environment and Waste Management (IJEWM), 3(3/4), 253-264. [More Information]

2008

  • Deepatana, A., Valix, M. (2008). Comparative adsorption isotherms and modeling of nickel and cobalt citrate complexes onto chelating resins. Desalination, 218(1-3), 334-342. [More Information]
  • Yuan, Z., Keller, Y., Bond, P., Melchers, R., Stuetz, R., Valix, M., Witherspoon, J., Bustamante, H., Vitanage, D. (2008). Corrosion and odour management in sewers: the state of the art and key challenges. IWA World Water Congress, vienna: IWA Publishing.
  • Eu, W., Cheung, A., Valix, M. (2008). Investigation of ilmenite reduction behaviour using in-situ synchrotron radiation based X-ray powder diffraction. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Syna, N., Cheung, A., Valix, M. (2008). Modelling of Gold (I) Bis-thiourea Adsorption and Carbon Properties of Activated Bagasse. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Deepatana, A., Valix, M. (2008). Recovery of nickel and cobalt from bioleaching of nickel laterite ores by ion exchange resins. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Valix, M., Cheung, A., Zhang, K. (2008). Role of chemical pre-treatment in the development of super-high surface areas and heteroatom fixation in activated carbons prepared from bagasse. Microporous and Mesoporous Materials, 116(1-3), 513-523.
  • Cheung, A., Valix, M. (2008). Role of Mineral Transformations in Sulphuric Acid Leaching of Pre-reduced Nickel Laterite Ores. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Cheung, A., Valix, M. (2008). Selective reduction roasting of limonite ores: Effect of over-reduction. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.
  • Deepatana, A., Valix, M. (2008). Steric hindrance effect on adsorption of metal-organic complexes onto aminophosphonate chelating resin. Desalination, 218(1-3), 297-303. [More Information]
  • Valix, M., Cheung, A., Zhang, K. (2008). Textural and surface chemistry of activated bagasse and its role in the removal of chromium ions from solution. Adsorption, 14(4-5), 711-718. [More Information]
  • Eu, W., Valix, M., Cheung, A. (2008). The Role of Thermal Treatment on the Activation of Ilmenite Ores for Leaching. The XXIV International Mineral Processing Congress (IMPC 2008), Beijing: Science Press, Beijing.

2007

  • Katyal, S., Valix, M., Thambimuthu, K. (2007). Study of parameters affecting enhanced coal bed methane recovery. Energy Sources. Part A. Recovery, Utilization, and Environmental Effects, 29(3), 193-205.

2006

  • Le, L., Tang, J., Ryan, D., Valix, M. (2006). Bioleaching nickel laterite ores using multi-metal tolerant Aspergillus foetidus organism. Minerals Engineering, 19(12), 1259-1265.
  • Thangavelu, V., Ryan, D., Deepatana, A., Valix, M. (2006). Bioleaching of Nickel Laterite Ore Using Halotolerant Aspergillus Foetidus under Saline Conditions. TMS 2006 135th Annual Meeting & Exhibition, Texas: TMS Publications.
  • Gomes, V., Barton, G., Petrie, J., Romagnoli, J., Holt, P., Abbas, A., Cohen, B., Harris, A., Haynes, B., Langrish, T., Orellana, J., See, H., Valix, M., White, D. (2006). Chemical Engineering Curriculum renewal. Education for Chemical Engineers, 1(1), 116-125.
  • Deepatana, A., Tang, J., Valix, M. (2006). Comparative study of chelating ion exchange resins for metal recovery from bioleaching of nickel laterite ores. Minerals Engineering, 19(12), 1280-1289.
  • Deepatana, A., Valix, M. (2006). Comparative Study Of Metal- Complexes Recovery Using Iminodiacetatic And Aminophosphonate Based Chelating Resins. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Thangavelu, V., Tang, J., Ryan, D., Valix, M. (2006). Effect of saline stress on fungi metabolism and biological leaching of weathered saprolite ores. Minerals Engineering, 19(12), 1266-1273.
  • Valix, M., Cheung, A., McKay, G. (2006). Empirical Modelling of the adsorption behaviour of acid blue dye. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M., Orellana, J. (2006). First Year Chemical Engineering Experience Under The Flexible First Year Program. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M. (2006). Invited Conference Presentation: Transforming Our Capabilities to Understand Mineral Processing Systems Through In Situ Synchrotron Radiation. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Deepatana, A., Valix, M. (2006). Ion Exchange Recovery of Nickel and Cobalt from Metal-Organic Complexes Generated in Bioleaching of Low Grade Nickel Laterite Ores. TMS 2006 135th Annual Meeting & Exhibition, Texas: TMS Publications.
  • Deepatana, A., Tang, J., Valix, M. (2006). Kinetics of Limonite and Nontronite Ore Leaching by Fungi Metabolic Acids, Separation Technology for Aqueous Processing. TMS 2006 135th Annual Meeting & Exhibition, Texas: TMS Publications.
  • Tang, J., Valix, M. (2006). Leaching of low grade limonite and nontronite ores by fungi metabolic acids. Minerals Engineering, 19(12), 1274-1279.
  • Tang, J., Valix, M. (2006). Leaching of Low-Grade Nickel Ores by Fungi Metabolic Acids. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Online: The Berkeley Electronic Press.
  • Deepatana, A., Valix, M. (2006). Recovery Of Nickel And Cobalt From Organic Acid Complexes Using Aminophosphonate Chelating Resin. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Deepatana, A., Valix, M. (2006). Recovery of nickel and cobalt from organic acid complexes: Adsorption mechanisms of metal-organic complexes onto aminophosphonate chelating resin. Journal of Hazardous Materials, 137(2), 925-933. [More Information]
  • O'Connor, F., Cheung, A., Valix, M. (2006). Reduction roasting of limonite ores: effect of dehydroxylation. International Journal of Mineral Processing, 80(2), 88-99.
  • Valix, M., Cheung, A., Zhang, K. (2006). Role of heteroatoms in activated carbon for removal of hexavalent chromium from wastewaters. Journal of Hazardous Materials, 135(1-3), 395-405. [More Information]
  • Valix, M., Cheung, A., McKay, G. (2006). Roles of the textural and surface chemical properties of activated carbon in the adsorption of acid blue dye. Langmuir, 22(10), 4574-4582.
  • Valix, M., Cheung, A., McKay, G. (2006). The effect heteroatoms on the surface chemistry and adsorptive removal of Cr(Vi) from waste waters. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Valix, M. (2006). Transforming Our Capabilities to Understand Mineral Processing Systems Through In Situ Synchrotron Radiation. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Thangavelu, V., Tang, J., Ryan, D., Valix, M. (2006). Use Of Halotolerant Organisms In Biological Leaching Of Weathered Saprolite Ores. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.
  • Le, L., Ryan, D., Valix, M. (2006). Using Multi-Metal Tolerant Aspergillus Foetidus In Bioleaching Saprolitic Nickel Laterite Ores. CHEMECA 2006 Knowledge and Innovation, Auckland, New Zealand: Auckland University Press.

2005

  • Le, L., Tang, J., Ryan, D., Valix, M. (2005). Bioleaching Nickel Laterite Ores using Multi-Metal Tolerant Aspergillus Foetidus Organism. 1st International Symposium on Processing of Nickel Ores & Concentrates (Nickel Processing 05). Elsevier.
  • Valix, M., Tang, J., Cheung, A., Deepatana, A. (2005). Biological Leaching Of Nickel Laterites: Use Of Synchrotron Based X-Ray Diffraction In Elucidating The Amenability Of Laterite Minerals To Fungi Metabolic Acids (POSTER). Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Thangavelu, V., Tang, J., Ryan, D., Valix, M. (2005). Effect of Saline Stress on Fungi Metabolism and Biological Leaching of Weathered Saprolite Ores. 12, 1266-1273.
  • Tang, J., Valix, M. (2005). Leaching of Low Grade Limonite and Nontronite Ores by Fungi Metabolic Acids. 1st International Symposium on Processing of Nickel Ores & Concentrates (Nickel Processing 05). Elsevier.
  • Hayashi, J., Gomes, V., Valix, M. (2005). Molecular Sieving Carbon from Acid Modified Bagasse. 33rd Australasian Chemical Engineering Conference : CHEMECA 2005 : smart solutions, doing more with less, Canberra: Curran Associates, Inc.
  • Zhang, K., Cheung, A., Valix, M. (2005). Roles of physical and chemical properties of activated carbon in the adsorption of lead ions. Chemosphere, 60(8), 1129-1140. [More Information]
  • Valix, M., O'Connor, F., Mui, E., Cheung, A., Deepatana, A. (2005). The Use of In-Situ Synchrotron X-ray Diffraction in Monitoring the effect of Sulfur Activator in Mineral Transformation of Saprolite Minerals. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.
  • Valix, M., Cheung, A., Deepatana, A. (2005). Use of In-situ Synchrotron based X-ray Diffraction in Elucidating Limonite Reduction Behaviour. Australian X-ray Analytical Association (AXAA) National Series 2006, Australia: Australian Science Media Centre.

2004

  • Valix, M., Cheung, A., McKay, G. (2004). Acid Blue Dye Adsorption Onto Bagasse Activated By Low Temperature Carbonisation And Physical Activation. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Deepatana, A., Valix, M. (2004). Adsorption of Metals from Metal Organic Complexes Derived from Bioleaching of Nickel Laterite Ores. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Brooklyn, N.Y.: Engineering Conferences International.
  • Deepatana, A., Valix, M. (2004). Adsorption of Metals from Metal-Organic Complexes Derived from Bioleaching of Nickel Laterite Ores. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Online: The Berkeley Electronic Press.
  • Tang, J., Tang, J., Cheung, A., Valix, M. (2004). Biological Leaching Of Nickel Laterites: Use Of Synchrotron Based X-Ray Diffraction In Elucidating Nickel Laterite Amenability To Fungi Metabolic Acids. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Zhang, K., Cheung, A., Valix, M. (2004). Contributions Of Heteroatoms To Activated Carbon Surface Acidity And Their Effects In The Removal Of Hexavalent Chromium From Wastewaters. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Tang, J., Valix, M. (2004). Leaching of Low Grade Nickel Laterite Ores by Fungi Metabolic Acids. 2004 ECI Conference on Separations Technology VI: New Perspectives on Very Large-Scale Operations, Online: The Berkeley Electronic Press.
  • Valix, M., Cheung, A., McKay, G. (2004). Preparation Of Activated Carbon Using Low Temperature Carbonisation And Physical Activation Of High Ash Raw Bagasse For Acid Dye Adsorption. Chemosphere, 56(5), 493-501. [More Information]
  • Zhang, K., Valix, M. (2004). Preparation Of Multiporous High Surface Area Activated Carbon Using Low Temperature Carbonisation And Physical Activation Of High Ash Raw Bagasse. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Valix, M., O'Connor, F., Mui, E., Cheung, A. (2004). The Use of In-Situ Synchrotron X-Ray Diffraction in Monitoring The Effect Of Sulfur Activator In Mineral Transformation Of Saprolite Minerals. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.
  • Valix, M., Cheung, A. (2004). Use Of In-Situ Synchrotron Based X-Ray Diffraction In Elucidating Limonite Reduction Behaviour. Chemeca 2004 - Australasian Conference on Chemical Engineering, Australia: Curran Associates, Inc.

2003

  • Valix, M., Loon, L. (2003). Adaptive Tolerance Behaviour of Fungi in Heavy Metals. Minerals Engineering, 16(3), 193-198.
  • Valix, M. (2003). Application of Synchrotron Radiation in Resolving Issues in Mineral Reactivity. Synchrotron Mineral Workshop, Not Published: Not Published.
  • Syna, N., Valix, M. (2003). Assessing the Potential of Activated Bagasse as Gold Adsorbent for Gold-Thiourea. Minerals Engineering, 16(6), 511-518.
  • Katyal, S., Thambimuthu, K., Valix, M. (2003). Carbonisation of bagasse in a fixed bed reactor: influence of process variables on char yield and characteristics. Renewable Energy, 28(7), 713-725.
  • Syna, N., Valix, M. (2003). Modelling of Gold (I) Cyanide Adsorption Based on the Properties of Activated Bagasse. Minerals Engineering, 16(5), 421-427.

2002

  • Tang, J., Valix, M. (2002). Development of Fungi Tolerance to Heavy Metals. Minerals Engineering 02. Elsevier.
  • Valix, M., Cheung, A. (2002). Effect of sulfur on the mineral phases of laterite ores at high temperature reduction. Minerals Engineering, 15(7), 523-530.
  • Valix, M., Tang, J. (2002). Leachability of low grade nickel laterite ores in organic acids. APCChE 2002, New Zealand: University of Canterbury.
  • Syna, N., Valix, M. (2002). Modelling of Gold (I) Cyanide Adsorption as a function of the Properties of Activated Bagasse. Minerals Engineering 02. Elsevier.
  • Valix, M., Cheung, A. (2002). Study of phase transformation of laterite ores at high temperature. Minerals Engineering, 15(8), 607-612.
  • Valix, M., Katyal, S. (2002). Thermal Carbonisation of Bagasse. APCChE 2002, New Zealand: University of Canterbury.

2001

  • Syna, N., Valix, M. (2001). Amenability of Sugarcane Bagacillo to Chemical Activation for Gold (I) Bis-Thiourea Adsorption. 2001 Conference of the Australian Society of Sugar Cane Technologists, : UNSW Australian Defence Force Academy.
  • Valix, M., Usai, F., Malik, R. (2001). Fungal Bio-Leaching of Low Grade Laterite Ores. Minerals Engineering, 14 No 2, 197-203.
  • Valix, M., Syna, N. (2001). Gold (I) Thiourea Adsorption on Fine Particle Activated Bagasse. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Tang, J., Malik, R. (2001). Heavy Metal Tolerance of fungi. Minerals Engineering, 14(5), 499-505.
  • Valix, M. (2001). In-Situ Synchrotron X-Ray Diffraction in Monitoring Mineral Transformation Of Saprolite Minerals. Industry briefing on synchrotron applications, Not Published: Not Published.
  • Valix, M. (2001). Invited Conference Presentation: Bioleaching of Nickel Laterite Ores. WMC-sponsored Workshop on the application of plant ecology to the mining industry, Not Published: Not Published.
  • Valix, M., Tang, J., Malik, R. (2001). Strain Training of Heterotrophic Micro-Organisms for Heavy Metal Tolerance. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Katyal, S., Thambimuthu, K. (2001). Study of Parameters Effecting Enhanced Coal Bed Methane Recovery. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Cheung, A., Ciavarella, N., O'Connor, F. (2001). Sulfuric Acid Leaching of selectively Roasted Laterite Ores. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Tang, J. (2001). The Effects of Electrochemical Conditions on Laterite Nickel Ore Leaching with Organic Acids. 6th World Congress of Chemical Engineering. UNSW Australian Defence Force Academy.
  • Valix, M., Tang, J., Cheung, A. (2001). The effects of mineralogy on the biological leaching of nickel laterite ores. Minerals Engineering, 14 No 12, 1629-1635.
  • Valix, M., Malik, R., Usai, F. (2001). The Electro-sorption properties of nickel on laterite gangue leached with an organic chelating acid. Minerals Engineering, 14(2), 205-215.

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