Marjorie Valix

Marjorie Valix is a Professor and Head of the School of Chemical and Biomolecular Engineering at the University of Sydney, where she has served as a faculty member since 1998. Her research specializations encompass wastewater treatment processes, carbon capture engineering excluding sequestration, powder and particle technology, and reaction engineering. She is an expert in mineral processing and mine waste with a focus on sustainable technologies, including pyrometallurgical, hydrometallurgical, and biohydrometallurgical processing of minerals and wastes, as well as adsorption and adsorbent development from biomass.

Professor Valix has authored 81 publications garnering over 4,200 citations. Key works include "Preparation of activated carbon using low temperature carbonisation and physical activation of high ash raw bagasse for acid dye adsorption," "An integrated biohydrometallurgical approach for the extraction of valuable metals from lithium-ion battery waste cathode materials" (2022), "Selective Extraction of Critical Metals from Spent Lithium-Ion Batteries" (2023), "Challenges in Recycling Spent Lithium-Ion Batteries: Spotlight on Critical Metals Recovery" (2023), "Mineral sequestration of CO₂ using saprolite mine tailings in the presence of alkaline industrial wastes" (2018), "Transforming industrial combustion waste by-products into ‘green’ construction cements" (2017), "Sustainable transformation of fly ash industrial waste into a construction cement blend via CO₂ carbonation" (2017), and "Overcoming the bacteriostatic effects of heavy metals on Acidithiobacillus thiooxidans for direct bioleaching of saprolitic Ni laterite ores" (2016). Her research impacts resource recovery from e-waste, battery recycling, CO2 mineral sequestration using mine tailings, green cement production from industrial wastes, and bioleaching applications. Valix received the B/HERT Award for Outstanding Excellence in Collaboration (overall winner). She supervises PhD projects on waste repurposing into concrete, leads the school, and delivers public lectures on critical minerals and net zero initiatives, including at the Net Zero Institute and Sydney Ideas events. She has been a visiting professor at Nanyang Technological University, Singapore.

Professional Email: marjorie.valix@sydney.edu.au