“Investing in research is directly supporting the advancement of technology, innovation, and economic prosperity. The work of both Dr.Tharmalingam and Dr. Scott are vital to ensuring Canada plays a leading role in a net-zero world, while supporting economic growth, environmental rehabilitation, and job creation. Critical minerals represent a generational opportunity for Sudbury and our net-zero future. Investing in research is the best path forward to ensuring we are seizing this opportunity.” – Viviane Lapointe, Member of Parliament Sudbury.
Extracting Gallium
Dr. Sujeenthar Tharmalingam, Assistant Professor at NOSM University, was awarded $600,000 by NSERC to support his research project, A microbial sponge to mine the critical mineral gallium.
Gallium is a vital element in the production of semiconductors, which are used in all kinds of electronic devices. Recently, a global semiconductor shortage has highlighted the need for alternative sources of gallium. China currently controls approximately 80% of the world's supply.
While gallium isn't found naturally as a mineral, it exists in trace amounts in tailings ponds—the waste products from mining processes. However, current methods for extracting gallium from these sources are expensive and inefficient.
Dr. Tharmalingam's project, conducted in collaboration with Dr. Vasu Appanna, co-founder of Biomine LTD and Professor at Laurentian University, aims to develop a new and eco-friendly solution for gallium extraction. Building off their previous work, the research team will focus on more efficiently mining gallium using microbes.
The NSERC Alliance grant will help develop a new microbial-based technology to collect gallium from tailings ponds in a clean and cost-effective manner. The project brings together Dr. Tharmalingam's expertise in molecular biology, microbiology, and gene editing with Biomine LTD's experience in developing custom-tailored eco-friendly microbial solutions.
This research has the potential to revolutionize gallium mining by developing a sustainable process that provides a steady supply of this critical mineral.
"The significance of gallium in electronics manufacturing is underscored by the recent semiconductor shortage. Our main objective is to pioneer an innovative microbial-based method to extract gallium from mining tailings, providing an environmentally friendly and economically viable solution to satisfy the increasing global need for this vital semiconductor material. We are grateful for the generous support from NSERC and Biomine LTD as we embark on this endeavor," says Dr. Suji Tharmalingam
Making the Most of Tailings Ponds
Dr. John Ashley Scott, Full Professor at Laurentian University’s Bharti School of Engineering leads the project entitled: Microalgal biosorption of critical minerals from mining related tailing ponds - recovering key metals to better protect aquatic systems and water supplies. This project will receive $530,990 from NSERC and substantial in-kind contributions from critical industry partner Glencore’s Sudbury Integrated Nickel Operations (Sudbury INO). Dr. Corey Laamanen serves as the project’s co-investigator.
The project will use naturally occurring microalgae bioprospected from mining sites in Northern Canada to remove critical minerals such as copper, nickel and cobalt from mining effluents using natural biosorption processes. It will also investigate methods for metals recovery from the biomass and beneficial uses of the remaining biomass, such as a soil ameliorant to aid in land rehabilitation.
The value to the critical minerals industry is that this low-cost approach will help with managing operational ponds and maximizing recovery of critical mineral resources. It can also act as a sustainable safeguard for protecting of water supplies for regional communities, by continuing to “mop up” metals and maintain post-closure legacy ponds to high standards to ensure long-term environmental protection, not just now, but for future generations.
“This project may open up new opportunities for industry and environmental protection that simply haven’t been developed yet. We are grateful for the contributions of both NSERC and Sudbury INO, without whom this project would not be possible,” says Dr. John Ashley Scott.