Topic: Biologically Accelerated Carbon Sequestration with Extremophiles for Climate Mitigation
Speaker: Dr. Tanvi Govil
Global efforts to mitigate climate change hinge on deploying effective carbon capture and sequestration (CCS) technologies. These technologies encompass three key methods: in-situ mineralization within geological formations, ex-situ mineralization through engineered systems on the surface, and subsurface mineralization that solidifies CO2 in deeper geological layers. Each method has its advantages and limitations, but they all face a common challenge: the slow rate of carbonate precipitation, which limits the speed and efficiency of the sequestration process.
Through our previous NSF-funded EAGER proposal, we have established a novel approach by utilizing extremophile microbes—organisms that thrive in extreme environments—to accelerate the mineralization process. These microbes enhance the conversion of atmospheric CO2 into stable mineral forms such as calcite and magnesite, significantly increasing the efficiency and scalability of traditional CCS methods. This biologically enhanced mineralization offers a faster, more reliable method for trapping CO2 in mineral forms that can safely be stored over geological timescales.
Our ongoing research focuses on refining microbial processes for carbon capture and sequestration (CCS), with the future aim of scaling up these operations to demonstrate their feasibility in real-world settings. A prospective avenue for further research is the potential use of the Sanford Underground Research Facility (SURF) to test and optimize these technologies under actual geological conditions. Located in South Dakota, SURF could provide access to deep geological formations essential for both in-situ and subsurface mineralization studies. This potential collaboration would leverage South Dakota’s geological resources and could position the state as a leader in innovative climate solutions. Such an initiative might attract further research investments and expand local expertise in geotechnical and environmental engineering. Our ultimate goal is to validate biologically accelerated carbon sequestration as a viable and efficient solution to help combat global climate change by removing and permanently storing atmospheric CO2.
Dr. Tanvi Govil is an Assistant Professor in the Department of Chemical and Biological Engineering at South Dakota Mines, where she leads the CellFe Biomanufacturing Lab. Her lab focuses on innovative cell-free biomanufacturing, turning unconventional materials like agricultural residues, plastic waste, and CO2 into valuable biopolymers and biofuels. Dr. Govil's work is critical in transitioning scientific discoveries to practical applications, advancing green technologies from bench to pilot scale. Additionally, Dr. Govil develops industry relationships to enhance the practicality of academic research, bridging the gap between laboratory work and real-world applications. She is committed to mentoring a new generation of engineers and scientists, promoting interdisciplinary approaches and sustainability. Dr. Govil's commitment extends beyond the lab, developing crucial industry relationships to ensure that academic innovations find practical applications. Her leadership at global conferences further showcases her dedication to promoting sustainable technological solutions. Overall, her work significantly contributes to environmental stewardship and the advancement of community-oriented practices.
