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Dr Li has a broad interest in geoscience, with specialised expertise in geophysics and geomechanics applications for resource and geoenergy exploration and development.

Jimmy obtained a Bachelor's degree in Petroleum Engineering from China University of Petroleum in 2007. He then spent a decade at Halliburton Energy Services, working in various technical and management roles within the Sperry Drilling division. During his industry career, he was involved in multiple onshore and offshore drilling and geophysical logging projects, including the Shell Changbei project, ConocoPhillips Penglai offshore project, PetroChina Tarim Basin project, and BG Lingshui deepwater exploration project.

In 2021, he completed a PhD in Petroleum Engineering at Curtin University. His doctoral research led to the development of a new theory on wettability-affected wave propagation in fluid-saturated porous media, which in turn enabled the development of an experimental method for characterising rock wettability using elastic wave measurements. This research established a strong theoretical and experimental foundation for the development of multi-frequency sonic logging tools for formation wettability assessment.

Since joining The University of Queensland in 2021, Dr Li's research has focused on theoretical and experimental studies in rock mechanics and geotechnical engineering for underground mining and drilling applications. In 2022, he played a key role in establishing the Quality Management System (QMS) for the Mechanical Testing Laboratory, which subsequently received NATA accreditation for rock mechanics measurement.

My research focuses on mineral processing technologies, namely, grinding and flotation processes, with especial interest in understanding the complex interplay between ore mineralogy, mineral surface properties and process behaviour. I specialise in the application of advanced mineral surface characterisation techniques such as Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) in mineral processing studies (e.g., grinding, flotation) to identify the key chemistry drivers of process behaviour. This knowledge is vital to understand the underlying mechanisms and devise solutions to improve process efficiency. I look to further develop advanced tools by integrating critical techniques such as ToF-SIMS, X-ray Photoelectron Spectroscopy, X-ray Tomography, Mineral Liberation Analysis and X-ray Fluorescence towards more comprehensive and faster mineral characterisation.

I am also interested in developing novel, highly selective reagents for mineral flotation to enable the processing of ores more efficiently, safely and environmentally friendly compared to the traditional reagents. Of particular interest is the use of biochemistries to develop more sustainable reagent technologies.

My research covers both the fundamental aspects underlying mineral processes (e.g., particle-bubble interactions) as well as applications in the minerals industry through close collaborations with the industry. I am Chief Investigator in the ARC Centre of Excellence for Enabling Eco-Efficient Beneficiation of Minerals (https://coeminerals.org.au/) aiming to achieve a step-change in mineral processing by increasing energy and water efficiency and reducing metal loss during processing. I am also part of the research team of the newly formed Collaborative in Coarse Particle Processing Research, a consortium of 9 industry partners, investigating the implementation of coarse particle technology in the industry.

Dr Xiaodong Ma obtained his Bachelor's Degree in 2006 and a Master Degree in 2009 from Dalian University of Technology, China, then graduated with a PhD in 2012 from The University of Tokyo, Japan, supported by the Japanese Government (Monbukagakusho: MEXT) Scholarship.

Dr Ma joined The University of Queensland in 2012 right after his PhD graduation starting as a postdoctoral research fellow.

Dr Ma is now the acting group leader of the High-Temperature Processing (HTP) group and leading the HTP Program at JKMRC, SMI of UQ. He is an expert in the experimental and modelling research on thermodynamics and kinetics of high-temperature materials processing for ferrous, non-ferrous and advanced materials. He has extensive hands-on experiences in fundamental study and applied research including solar cell silicon purification, ironmaking, steel secondary refining, copper smelting, metal extraction from low-grade complexed ores, and waste treatment, etc. His research activities also extend to the development of high-strength and high-end specials steels by sophisticated control of second phase particles. Along with the research, he is also good at materials characterization by operating the analytical facilities of SEM, EPMA, TEM, XRD, ICP, etc. He is a pyrometallurgical specialist with a strong interest lying in the decarburization of ironmaking and steelmaking with hydrogen metallurgy and lower CO2 emission technologies in the metallurgical sector.

United Nations (UN) member states in 2015 agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. Dr Deirdre Mikkelsen's postition as a Teacihng and Research Acacemic contributes towards the following UN SDGs:

GOAL 2 - ZERO HUNGER

GOAL 3 - GOOD HEALTH AND WELL-BEING

GOAL 4 - QUALITY EDUCATION

GOAL 12 - RESPONSIBLE CONSUMPTION AND PRODUCTION

GOAL 13 - CLIMATE ACTION

GOAL 15 - LIFE ON LAND

Deirdre is a Microbiologist with experience in molecular microbial ecology techniques, bioinformatics and fermentation microbiology.

Deirdre has a B.Sc with First Class Honours in Microbiology (1999) and PhD in Microbiology (2005) from The University of Queensland (UQ, Australia). She worked at the Advanced Wastewater Management Centre (UQ; 2005), until moving to the Centre for Nutrition and Food Sciences (CNAFS) in 2006. She worked as Postdoctoral Research Fellowship and Research Fellow in CNAFS, Queensland Alliance for Agriculture and Food Innovation, UQ. Deirdre joined the School of Agriculture and Food Susstainability in 2019 as a Teaching and Research Academic, and is presently a Senior Lecturer in Food Science. She course coordinates and lectures FOOD2000 Food Science, FOOD3017 Food Safety & Quality Management and the work integrated learning course FOOD7021 Professional Experience. Deirdre's research is molecular microbial ecology and biopolymer science-based, aiming to provide a mechanistic understanding of how foods, diets and nutrients influence the host gut microbiota. Deirdre has 75 peer-review publications with an h-index of 26 and 2746 citations.

Deirdre is a Member of the Australian Institute of Food Science and Technology (AIFST) and sits on the Queensland Branch Committee. She is also a Member of the Australian Society for Microbiology (ASM). Deirdre is part of the International Union of Food Science and Technology (IUFOST) Food Safety Working Committee, in an education-focused role.

Dr Micah Nehrings’ research interests are in: Mine Planning, Production Scheduling Optimisation, Optimal Ultimate Pit Limit (UPL) determination, planning for In-Pit-Crusher-Conveyor (IPCC) systems.

Micah is a Lecturer within the Division of Mining Engineering of the School of Mechanical and Mining Engineering. He leads the High Performance Surface Mining Research Group which is heavily focused on delivering high quality research outcomes in the planning and installation of In-Pit-Crusher-Conveyor (IPCC) systems.

Micah joined the School in 2011, after completing his PhD at The University of Queensland. Micah has since undertaken an early career academic program which has resulted in collaborations with European universities in Sweden, Germany and Kazakhstan. Micah has also developed an industry network that works with him in the implementation of some of his groups research outcomes.

Micah research outputs have been published in numerous high ranking journals including Minerals Engineering, Journal of the South African Institute of Mining and Metallurgy, Mining Technology and the International Journal of Mining, Reclamation and Environment.

Dr Evgenii Nekhoroshev is a Postdoctoral Research Fellow at the School of Chemical Engineering and a member of the Pyrometallurgy Innovation Centre led by Prof. Evgueni Jak.

He graduated with a Master in Chemistry (chemical thermodynamics) from Lomonosov's Moscow State University, Deparment of Chemistry in 2012. His Master's Thesis was "Thermodynamic optimization of the NaOH-Al(OH)3-Na2SiO3-H2O system for applications in Bayer's process of bauxite treatment" as part of a bigger project initiated in collaboration with Rusal company aimed at utilisation/valorisation of red mud residues accumulated during the production of aluminium oxide from bauxite ores.

In 2019, he completed a PhD in Metallurgical Engineering at Ecole Polytechnique of Montreal, Canada within The Centre For Research in Computational Thermodynamics (CRCT), where he acquired expertise in FactSage software, multicomponent database development, and was included in the list of official collaborators of FactSage. His PhD thesis was "Thermodynamic optimization of the Na2O-K2O-Al2O3-CaO-MgO-B2O3-SiO2 system" sponsored by Glass Consortium including Corning and SCHOTT glass producers. The purpose of the database he developed was to assist the industry in designing new glasses with special properties: chemically hardened glasses (smartphones), technical glasses with high thermal and chemical resilience (boron-containing glasses), chemically inert glasses, etc.

Short after receiving his PhD, Dr Evgenii Nekhoroshev accepted a position at The University of Queensland as part of the Pyrometallurgy Innovation Centre's team where he has an official title of Theme Leader in Thermodynamic Computations, combining his broad expertise in metallurgy, chemical engineering, applied mathematics, and programming.

Dr Evgenii Nekhoroshev has always been passionate about formalisation and automation of big research tasks. He started working on developing an automated solver for thermodynamic optimisation during his PhD thesis which was improved and finalised using the ideas of Prof. Evgueni Jak about real-time derivative matrix optimization and sensitivity analysis applicable to large multicomponent systems. His contribution to the Centre allowed to make transition to a continuous optimization approach when experimental and modelling streams of work in the Centre are efficiently combined together. It allows to include the most recent experimental datasets into a self-consistent database update with minimal time delays.

Dr Ngoc N. Nguyen is an associate lecturer and an ARC DECRA Fellow at School of Chemical Engineering, The University of Queensland (UQ), Australia. He was awarded an Australia Award Scholarship by the Australian Government for studying at UQ and attained a PhD in Chemical Engineering at UQ in 2018. After completing his PhD, he was awarded a renowned Alexander von Humboldt (AvH) Fellowship by the AvH Foundation (the German Government) and worked as an AvH fellow at the Department of Physics at Interfaces, Max Planck Institute for Polymer Research (Germany) for three years (2019-2021). Dr Nguyen used to work as a visiting scholar to Pacific Northwest National Laboratory in USA and a lecturer at Hanoi University of Science and Technology in Vietnam. He recently secured a prestigious ARC DECRA (Discovery Early-Career Researcher Award) granted by the Australian Research Council (ARC). He is also an associate investigator within the ARC Centre of Excellence for Eco-enabling Beneficiation of Minerals.

His research strives for creating cutting-edge knowledge and innovations in three inter-related pillars of the low-carbon economy:

(1) sustainable energy,

(2) natural resources including critical metals,

(3) innovative approaches for tackling environmental issues such as CO2 emissions and mine waste.

He is working concurrently in these pillars. In particular, he is leading an ARC DECRA project about unconventional energy storage by locking fuel gases (e.g., hydrogen, methane) in the solid lattice of water, taking the intrinsic advantages of water as the cheapest, safest and most sustainable feedstock on Earth. Besides, he his working actively in eco-efficient extraction and separation of valuable resources from the Earth's crust toward a sustainable mineral processing industry for supplying sufficient commodities (e.g., metals) for the energy transition. In addition, Dr Nguyen has enduring interest in creating innovations for tackling the pressing environment problems such as CO2 emissions, with special interest in carbon capture and storage and utilisation, as well as addressing the mine waste in the mineral processing industry and the recylcing of critical metal-containing waste.

Biography:

Anh Nguyen is a professor at the School of Chemical Engineering where he held the BMA (BHP Billiton Mitsubishi Alliance) Chair from 2007 till 2017. He previously held academic positions at the University of Newcastle (Australia), the University of Utah (USA) and the Technical University of Kosice (Czechoslovakia). He was awarded an ARC (Australian Research Council) Queen Elizabeth II Fellowship and an Alexander von Humboldt Fellowship (Germany). His relevant publications include a research book on the colloidal science of flotation, 3 edited volumes, 15 book chapters (invited) and over 350 papers in refereed journals. He has an editorial role on Advances in Colloid and Interface Science, and International Journal of Mineral Processing.

Research:

Professor Nguyen’s research interests embrace various colloid and interfacial science and engineering aspects. His current research focuses on colloid and interface science of particles, bubbles and drops in surfactant solutions and saline water. The ultimate applications include coal and minerals processing, saline water usage and treatment, foliar fertilisers, smart self-cleaning materials, hydrophobic hydration and hydrates of natural gas, and particle separation. His research funding has come from industry partners (BMA, BHP Billiton, Xstrata, Rio Tinto, OneSteel, Agrichem) and agencies (ARC and ACARP). He is the Leader of the Mineral Processing and Interfacial Processes group.

Teaching and Learning:

Professor Nguyen aims to encourage critical thinking, understanding and application of fundamental principles. The objective is to engage students by providing a stimulating learning process and environment at both undergraduate and postgraduate levels, relevant to the changing focus of national and global economic importance. He has taught a number of courses, including colloid and surface chemistry, particle processing and technology, unit operation, coal and mineral processing, flotation, computing and design laboratory, process modelling and simulation. He is currently an academic and international advisor for chemical and metallurgical engineering.

Projects:

1. Saline Water: molecular phenomena and engineering of saline water-air interfaces, water desalination, salt flotation, coal flotation in sea water and tailings processing. Foliar Fertilizers and Pesticides: self-assembly of colloids from evaporating droplets on leaf surfaces.
2. Gas Hydrates: role of hydrophobic hydration and additives in gas hydrate formation for storage and transportation.
3. Nanomaterials: surface self-assembly of surfactants and nanobubbles
4. Hydrometallurgy: role of colloidal forces and surface chemistry in bacteria attachment in bioleaching, and leaching of minerals in brine solutions.
5. Mineral Processing: role of microhydrodynamics and colloidal forces in bubble-particle collection in flotation, surface electrochemistry of sulfide flotation, flotation of ultrafine particles, flotation of coarse particles and composite particles.
6. Foam and Froth: drainage and stability of thin films of saline water, role of particle shape and hydrophobicity in foam drainage and stability, foamed cements.
7. Molecular (MC and MD) modeling and validation by VSFG spectroscopy of the partition of salt ions and surfactants at the interfaces of liquid films relevant to flotation, bubble columns and oil processing.

Associate Professor Italo Onederra serves as the Director of the Centre for Future Autonomous Systems and Technologies (FAST) at the School of Mechanical and Mining Engineering. He leads a research group focused on improving mineral extraction methods with reduced environmental impact through advanced preconditioning and fragmentation techniques.

Recognised internationally as a specialist in explosives and blasting engineering technology, Italo holds a Bachelor of Engineering (Civil) with honours from the University of Melbourne, and a Master of Engineering Science and PhD from the University of Queensland. With over 25 years of R&D experience and consulting work in Australia, South America, Africa, and Europe, Italo has demonstrated exceptional leadership and impact in both research and industry. He has published numerous articles in peer-reviewed journals and conferences, contributed to technical reports and books, and co-invented novel nitrogen oxide-free explosives based on hydrogen peroxide. Italo is also known for developing fragmentation modelling techniques, which have been incorporated into commercial software used globally by industry and academia, as well as pioneering the use of physics engines in blast movement modelling to improve ore control and maximise recovery.

Julie’s research is mainly focussed on gas-water-rock core reactivity at reservoir conditions using experimental, field, and geochemical modelling techniques. Recent projects have been in the application of carbon dioxide geological storage in which CO2 is captured and stored in formations generally contained by low permeability cap-rock. The safe containment of the injected CO2 and the potential changes to rock porosity, permeability, and water quality should be determined. Recent and current projects with a focus on a demonstration site in the Surat Basin (Precipice Sandstone) include the impacts of impurity or acid gases present in industrial CO2 streams (collaboration with D. Kirste, SFU), inducing carbonate precipitation (in collaboration with S. Golding), and understanding dissolved metal sources and fate. Julie has also worked closely with the CO2CRC, CTSCo, Glencore, SEAL, the NSW government, CI-NSW, and ANLEC R&D, and provided expert opinion to the Queensland Government, and input to Environmental Impacts Assessments.

Julie is currently working with landholders, the QLD regional government, RDMW, councils and industry to understand the sources of methane in aquifers of the Great Artesian Basin, especailly those overlying coal seam gas reservoirs (CSG) (with Arrow Energy, SANTOS, APLNG, H. Hoffman, K, Baublys).

Other projects include gas-water-rock or acid-rock reactivity that modify nano-porosity and gas flow in gas or oil bearing shales.

Julie Pearce graduated with an MCHEM (Hons) degree in Chemistry from the University of York, UK. She then moved to the University of Bristol to complete a Ph.D. in 2007 focusing on laser spectroscopic studies to understand the detailed reaction dynamics of atmospheric processes. From 2007 – 2009 she accepted a Japan Society for the Promotion of Science Postdoctoral Fellowship, hosted at Nagoya University, Japan. There she measured delta 13C and delta 18O isotopic signatures of CO2 simultaneously in real time in the atmosphere using a laser spectroscopic technique to understand anthropogenic and biogenic sources of CO2. After taking a career break to travel in 15 countries in Asia, she moved to Brisbane in 2010 where she is enjoying the surrounding natural beauty of Queensland.

Yongjun Peng is a Professor at School of Chemical Engineering, The University of Queensland. He obtained his PhD under the supervision of Profs Stephen Grano, John Ralston and Daniel Fornasiero from the Ian Wark Research Institute of the University of South Australia in 2002. This study was part of a large international project, AMIRA P260C regarding grinding and flotation chemistry in fine particle flotation with application of complementary solution and surface analytical techniques. He studied the galvanic interactions between grinding media and base metal sulphide minerals, mineral oxidation and dissolution, the activation of iron sulphide minerals, and surface contamination in improving mineral flotation. He was the 1st researcher developing the well-known Magotteaux Mill which allows the control of chemical reactions during grinding. His research work also guides the industry to use high chromium media in primary grinding mills and inert grinding media in regrinding mills to minimize the negative effect of galvanic interactions.

From 2002 to 2006, Yongjun Peng worked at the COREM Research Centre in Canada which is supported by the Canadian government and eleven international member mining companies. During his time there, he developed technologies for member mining companies to improve base metal, gold and niobium flotation. He was awarded an expert certificate for five years in Canada by the Quebec government, and also awarded NSERC (Natural Sciences and Engineering Research Council of Canada)-Industry Research Fellowship. From 2006 to 2009, Yongjun Peng worked at BHP Billiton Perth Technology Centre in Australia as a Senior Metallurgist/Engineer responsible for fine nickel flotation in saline water, gold and uranium processing. He won a major BHP Billiton internal prize in 2008.

Yongjun Peng’s current research at the University of Queensland focuses on froth flotation and the underlying solution chemistry, colloid/surface chemistry and electrochemistry. In addition to solving problems for individual companies, the underlying theme is the particle interaction taking place during the processing of low quality and complex energy and mineral resources with low quality water to address key challenges that face the resource industry today. His research is supported by the Australia Research Council, the Australian Coal Industry’s Research Program (ACARP) and the resource industry. In 2022, he was awarded the ACARP Research Excellent Award recognising research and leadership excellence through long term commitment and impact.

New technologies developed

Depressing hydrophobic gangue minerals in the flotation of sulphide ores. Traditional prefloat to float and remove hydrophobic gangue minerals also floats and removes sulphide minerals due to the collectorless flotation of sulphide minerals upon surface oxidation. This technology introduces a prefloat cleaner stage where sulphide minerals recovered to the prefloat concentrate are depressed and separated from other hydrophobic gangue minerals at a low pulp potential using innovative reducing agents which do not affect the natural floatability of sulphide minerals. The prefloat cleaner tailings are then fed back to the main sulphide flotation circuit. Traditional reducing agents applied in prefloat require high consumptions and also interfere with the downstream flotation. Flotation tests using chalcopyrite and organic carbon show that the new approach can reduce the loss of chalcopyrite in the prefloat by over 40% without affecting the rejection of naturally hydrophobic gangue. This technology is commercialized by ALS.

GoldRecover. This technology improves the gold flotation recovery from comminution circuit and flotation circuit in gold processing operations using innovative chemicals to remove iron contamination from gold surfaces. Iron contamination prevents the adsorption of collectors on mineral surfaces. Based on a copper-gold ore, this technology achieved a gold recovery up to 30% and a copper recovery up to 12% higher than the base line. Based on a pyrite-gold ore, this technology achieved a gold recovery up to 10% higher than the base line. This technology is commercialized by Kinetic Group Worldwide.

Counteracting the adverse effect of cyanide in flotation. Cyanide added to depress gangue minerals or existing in process water can depress the flotation of sulphide and precious minerals. Cyanide can also complex with metal ions and form metal cyanide which can depress or activate mineral flotation depending on the pulp chemistry. The new technology involves the modification of pulp chemistry to make metal cyanide activate sulphide and precious minerals in flotation. This technology has been applied in the sponsor’s flotation plant to improve gold and silver recoveries since 2012.

Regrinding-flotation pre-treatment prior to CIL leaching. This technology has been applied in the sponsor’s plant to improve copper and gold recoveries while reducing cyanide consumption since 2012.

New sulphidisation to improve the flotation of oxidized minerals. Traditional sulphidisation suffers from drawbacks such as low efficiency, low pulp potential with a high reagent consumption and difficulty to sulphidise some minerals. The new sulphidisation we developed from the ARC Linkage Project LP160100619 supported by Newmont and Newcrest is conducted at higher pulp potential. Based on a stockpile copper ore, the new sulphidisation improves the copper recovery from 76% (base line) to 93% with even higher copper grade. Based on a stockpile pyritic ore containing gold, the new sulphidisation improves the recovery of total S from 48% (base line) to 68% and the recovery of sulphide S from 84% (base line) to 92%.

De-aerating froth products (patented technologies). Persistent froth in flotation concentrates presents operational challenges in downstream processing such as pumping in sumps and dewatering in filters and thickeners. In sumps where flotation concentrates are pumped to the dewatering process, the liquid level sensors often fail to detect the persistent froth which may lead to flooding of the processing area or even the entire plant. In dewatering to separate the solids in the concentrate from water, persistent froth significantly reduces both thickening and filtration efficiencies. The accumulated persistent froth floating on top of thickeners can also limit the capacity of the plant. Two types of physical froth de-aerators have been developed, one based on physical forces and another based on pressure changes. The de-aerator using physical forces is suitable for destabilising froth in sumps and filters, while the de-aerator using pressure changes is suitable for destabilising froth in thickeners. These technologies are commercialized by DADI (AUSTRALIA) Engineering Company.

Rapid measurement of coal oxidation (patented technology). This technology can be used in the plant to determine the degree of coal oxidation in natural environments within 5 minutes. The solvens used are environmentally friendly. Based on the degree of coal oxidation, a ratio of non-polar collector to polar collector can be determined to maximise the coal flotation while minimizing reagent consumptions. At one coal preparation plant this technology demonstrates an improvement of 5%-26% increase in the recovery of coal (based on applying optimised ratios of oily and polar collectors for the measured degree of coal oxidation).This technology is commercialized by interchem.

Apparatus and method for emulsifying oily collectors for use in flotation (patented technology). Oily collectors are widely used in the flotation of various commodities. Due to their low solubility in water, a large amount of oily collectors has to be used with a long conditioning time. A number of studies has demonstrated that chemical emulsifiers can significantly improve the efficiency of oily collectors by reducing their droplets. However, the application of chemical emulsifiers in flotation plants is limited due to their strong frothing abilities which can cause various problems. We have developed apparatus to physically emulsify oily collectors to droplets with a size ranging from 12.2 µm to 0.7 µm and found that the flotation performance increases with the decrease of droplet size until an optimal droplet size. Droplets smaller than the optimal size is not beneficial to flotation. The apparatus has a low equipment cost and low maintenance. Based on the test work on five different coal samples from 3 Australian coal preparation plants, the emulsified diesel could increase the yield by 2.5 to 15.3% at the same product ash content while reducing the diesel consumption by 97,412 L to 304,941 L per annum. This technology is commercialized by DADI (AUSTRALIA) Engineering Company.

Malcolm has applied fundamental comminution research to design and process improvement on over 70 mines worldwide during 40 years at Mintek, UCT, Professor of comminution at the JKMRC in Australia, and through private research companies. His work is published in over 240 papers and has been presented in as many conferences worldwide. Malcolm collaborates extensively, with close compatriots on 5 continents forming the Global Comminution Collaborative (GCC) – providing an expert research and consulting base covering the full comminution process chain. Malcolm provides on-site experiential training and site reviews to empower mine staff to upgrade the productivity and their skills. This is supplemented with formal training workshops on liner design, comminution and Advanced Mine to Mill. Malcolm’s research vision is of integrated total process simulation as a tool for innovation – linking geology, mining, energy and size reduction, gangue rejection and recovery into flexible process design and process optimisation.

Malcolm supervises research students and runs three companies dedicated to advancing cutting edge technology into the mining industry. These focus around operation-relevant training; advanced mill liner design using DEM modelling; mechanistic mill modelling; introducing the latest tools into daily process control; operationalising advanced mine-to-mill implementation; and development of step-change reduction in comminution energy.

Dr Ummul Sultana is a Industry Research Fellow in the Hydrometallurgy Research Group within the School of Chemical Engineering, at the University of Queensland. She obtained a Bachelor’s degree in Materials and Metallurgical Engineering, followed by Master’s degree in Hydrometallurgy and PhD in Materials Engineering from the Queensland University of Technology in Australia. After finishing her PhD, she started her research career as a Postdoctoral Researcher at UQ in the School of Chemical Engineering in 2019. She has gained experiences in the field of hydrogen energy, nanomaterials-based electrocatalysts development, thermodynamic phase equilibria & database development as well as advanced materials’ characterization techniques. She was invited to the Ohio State University in United States of America to participate in a short course on advanced materials’ characterization techniques. She has been largely contributing to the research area of treating industrial tailings & critical metal recovery techniques. She has also been engaged in teaching, staff & laboratory management as well as managing the Occupational Health and Safety (OHS) guidelines in UQ laboratories. Due to her research excellence, she has received the Outstanding Doctoral Thesis Award for the class of 2019 and High Achiever Award in 2018 from QUT. She has several publications in well reputed journals and two of her journal articles have been featured in the front covers of “Advanced Functional Materials” (IF 20) and “ChemElectroCehm” (IF 5). In 2021, she was awarded the Research Fellowship Grant from the UQ Research and Innovation Centre. Ummul is currently focusing on Extracting Queensland’s Rare Earth Elements Sustainably project supported by the Queensland Department of Natural Resources, Mines and Energy. She is also an Associate Fellow of Higher Education Academy (AFHEA), member of Royal Society of Chemistry and Engineers Australia professional societies.

Teaching and Learning:

• Metal Production and Recycling [METL2201]
• Hydrometallurgy and Electrometallurgy [METL6204]
• Pyrometallurgy [MINE3212]

Biography:

Associate Professor James Vaughan is the Chemical Engineering Metallurgy Major Lead and Leader of the Hydrometallurgy Research Group. He obtained a Bachelor’s degree in Metallurgical Engineering at McGill University followed by Master of Applied Science and PhD degrees in Materials Engineering at The University of British Columbia in Canada. Before joining UQ, James gained industrial metallurgical process research and development experience with Glencore, Barrick and BHP. While at UQ, James served as Director of the University of Queensland Rio Tinto Bauxite & Alumina Technology Centre and has been Lead Chief Investigator of Australian Research Council Linkage and Discovery Projects. He is a member of the Australian Institute of Mining and Metallurgy (AusIMM) and the Advanced Materials and Batteries Council (AMBC).

Research:

James' research focuses on the fundamental aspects of leaching, ion exchange and precipitation reactions as well as membrane separations. These projects are of interest to the base metals, precious metals and alumina refining industries as well as in the fabrication of value added materials such as lithium ion battery cathode precursors and zeolites.

Current Projects:

1. Extracting Queensland's rare earth elements sustainably (Queensland Department of Resources)
2. Copper process innovations (UniQuest)
3. New approach for producing zeolites from clay or mine tailings (Zeotech)
4. Inorganic membrane percrystallisation in hydrometallurgy (ARC Discovery)
5. Improving pressure oxidation for refractory gold (Newmont)
6. Effects of solution impurities on gold leaching (Newmont and BHP ARC Linkage)
7. Recycling vanadium catalyst (QEM Critical Minerals Trailblazer)
8. Purification of battery metal solution (Lanxess Critical Minerals Trailblazer)
9. Recycling batteries (V Resource)

Teaching and Learning:

• Hydrometallurgy and Electrometallurgy (METL6204)
• Metal Production and Recycling (METL2201)

Lizette specialises in applying technical knowledge and research outcomes in industrial applications to improve process performance.

Lizette holds a Bachelor of Engineering Honours degree in Control Engineering from the University of Pretoria, South Africa and is a minerals processing engineer with more than 15 years industrial experience that joined the JKMRC in 2019. She has extensive experience in processing of precious group metals (PGM’s), copper and iron ore.

She has been involved in a number of commissiong projects, including ultra-fine grinding circuits with optimisation of the downstream flotation circuits and the commissioning and operation of gravity separation plants for the treatment of low grade iron ore. She has also implemented metallurgical ore characterisation test programs in PGM and iron ore processing.

Liguang Wang obtained his PhD from Virginia Tech (Supervisor: Roe-Hoan Yoon). His research focus is mineral processing and metal extraction for the transition to renewable energy. He was honoured with the ACARP Research and Industry Excellence Award in 2022.

More details from the lab website.

Fully funded PhD projects:

We are seeking PhD students working on sustainable production of lithium minerals, which is supported by an Australian Research Council Linkage grant. Each PhD scholarship includes full tuition support and stipend of $35,000 per annum. Please send your queries to liguang.wang@uq.edu.au

Professor Geoff Wang received his PhD in Chemical and Metallurgical Engineering from the Northeastern University, Shenyang, China in 1990. After earned about 2-year Visiting Academic experience at University of New South Wales, he joined the University of Queensland in 1996 and has been leading in the research focusing on modeling and simulation of the Chemical and Metallurgical Engineering processes, such as iron ore sintering, iron- & steel-making, sustainable energy, coalbed methane (CBM) extraction and carbon dioxide capture and utilization including CO2 -sequestration with enhanced coalbed methane (CO2-ECBM) recovery. Professor Wang’s research activity and interests are directed towards developing energy and environmental technologies. He has made significant contributions to the field of research on fluid flow, heat and mass transfer in chemical reactors, particularly gas solid reaction kinetics associated with various porous media. He has been active and completed research programs in clean energy technologies such as pulverized coal injection into blast furnaces, hydrogen production through lower emission coal combustion, and CO2 electrochemical conversion to fuel or reusable chemicals.

Professor Wang is author of a monograph entitled "Pulverized Coal Injection Technology for Blast Furnaces" and has over 100 original journal publications and about 60 refereed conference papers, included 2 patents.

Tony is an expert mining structural geologist who applies his skills to problems of deep earth mass mining, giant open pits, near-mine exploration, and the local and regional lithostructural controls on complex metalliferous mineral deposits. As a Senior Research Fellow in mining and engineering geology at the University of Queensland, Tony’s pioneering research focussed on the geological modelling and data inputs required for planning deep cave mining operations, an area that had received little previous consideration from geologists. He led the Geology and Mass Mining Project (GMM), which examined the geoscientific inputs required for exploring, defining, establishing, and mining block and sub-level caving operations that were being developed on giant porphyry copper-gold systems and IOCG deposits. While much research was being done in Australia to explore the deep earth environment, very little was being done to model the geology of large and deep mineralized systems, and then to use the new data and models to plan and extract any large discoveries made. Tony’s pioneering work was some of the first and most comprehensive to be done in this field.

• Fellow and chartered professional (geology) of the Australasian Institute of Mining and Metallurgy
• Fellow of the Society of Economic Geologists
• Fellow of the Geological Society
• Fellow of the Australian Institute of Geoscientists
• Member, Geological Society of Australia
• Member, Australasian Society for Historical Archaeology

Tony is presently a Principal Structural Geologist with a Brisbane-based geophysical and geological consulting group.

Professor David John Williams was the Initiator and Director of the Geotechnical Engineering Centre within the School of Civil Engineering at The University of Queensland, an industry-funded centre that has attracted AUD10 million in funding over the period from 2007 to 2022. He also manages the industry-sponsored Large Open Pit Project, involving 10 global mining company sponsors, with current funding of USD1 million per year. He has over 40 years of teaching, research and consulting experience, and is internationally recognised for his expertise and experience in mine waste management and mine closure, pertaining to tailings dams in particular. He was a member of Expert Panel investigating technical causes of Brumadinho tailings dam failure and is on a number of Tailings Independent Technical Review Boards, including for Escondida Copper Mine in Chile. He authored in 2009 and 2016 Tailings Management Handbook, as part of the Commonwealth Leading Practice Sustainable Development Program for the Mining Industry. He is on Working Party for the Australian National Committee for Large Dams Guidelines on Tailings Dams – Planning, Design, Construction, Operation and Closure, published in 2012, with an Addendum in 2019 and currently being updated. He initiated in 2020 and largely delivers the AusIMM Tailings Management Professional Certificate Course that has been taken by almost 1,500 Tailings Practitioners worldwide.

David received his BE (Hons I) in Civil Engineering from Monash University in 1975 and his PhD in Soil Mechanics from the University of Cambridge in 1979. His research and consulting interests include:

• Physical characterisation of mine tailings deposition, including beaching, hydraulic sorting, sedimentation, consolidation, desiccation and loading
• Store and release cover systems for potentially acid forming mine wastes
• Co-disposal of mine tailings and coarse-grained mine wastes
• Dewatering and densification of mine tailings
• Dewatering of mineral products
• Moisture movement within mine wastes
• Settlement of coarse-grained mine wastes
• Strength of coarse-grained mine wastes
• Engineered rehabilitation of mine sites
• Risk assessment and cost-effectiveness analysis of mine site rehabilitation and closure
• Long-term seepage and runoff from mine tailings storages
• Characterisation of potentially acid forming waste rock dumps
• Application of high-resolution digital stereo-photography to monitoring erosion from mine waste slopes
• Mined landform evolution and design