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                  講座通知:Geochemical modeling of CO2-water-rock interaction and its applications to carbon sequestration
                  點擊數: 次 發布時間:2022-11-24 作者: 來源:
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                  講座時間:2022年11月24號(星期四)14:00-15:30


                  Zoom會議鏈接: https://iu.zoom.us/j/4522142163


                  演講主題:Geochemical  modeling of CO2-water-rock interaction and its applications to carbon  sequestration


                  The storage in deep  saline aquifers of CO2 captured at point sources such as coal-fired power plants  or directly capture from the atmosphere is a strategy that many regard as  critical to limiting global warming to less than 1.5 degrees Celsius. But is  Carbon Capture and Storage (CCS) safe? Might reactions between CO2, the native  brine, and the host rocks modify the reservoir structure? Where does the  injected CO2 go and what is its fate? Can CO2 escape to the overlying drinking  water aquifers to cause unwanted reactions and degrade water quality? Our  ability to understand and predict geochemical reactions in aquifers is critical  for answering these questions.

                  This  lecture will give an overview of geological carbon sequestration efforts and of  the research advances in reaction kinetics and geochemical modeling necessary to  predict the safety of CO2 storage. Recent innovative research by my students and  collaborators on applying non-traditional stable isotope tracers in geochemical  kinetics experiments has broken new ground in near-equilibrium reaction  kinetics, which is critically relevant to CCS. The Sleipner Project in Norway is  the world’s first industrial-scale CO2 storage project. I will present results  of numerical simulations of CO2 fate and geochemical reactions at this site. The  connections among the hydrosphere, lithosphere, and atmosphere as well as the  overlap between basic science and pressing societal needs—the hallmark of  groundwater sciences—become clear through a tour of the fascinating and  intriguing CCS efforts around the world.

                  Chen Zhu is a Professor of Earth and Atmospheric Sciences at Indiana University. He is also an adjunct professor in the School of Public and Environmental Affairs and School of Public Health at Indiana University. He specializes in water’s reactions with minerals and rocks. Zhu holds a Ph.D. from the Johns Hopkins University, an MSc from the University of Toronto, a BS from the Chengdu University of Technology, and a postdoctoral fellowship at the Woods Hole Oceanographic Institution. Zhu was a Fulbright Scholar and the 2006 recipient of the John Hem Award from the (US) National Ground Water Association. Zhu has been elected a fellow of the American Association for the Advancement of Science, the Mineralogical Society of America, and the Geological Society of America. Currently, Zhu serves as a co-Executive Editor for Groundwater published by the (US) National Groundwater Association. His book with Greg Anderson, Environmental Applications of Geochemical Modeling published by Cambridge University Press, is used as a textbook at universities around the world.


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