Bernard Sanjuan obtained a PhD in water geochemistry at the Paris 7 University in 1986 about the aqueous aluminium in geothermal waters and its thermodynamic properties. He has mainly led his career at BRGM and has worked in numerous European and French projects as project leader and/or researcher in water geochemistry. After have being deputy head of the Analysis Division, he was deputy head of the Department of Geothermal Energy from 2007 to 2012. Between 1990 and 1995, his main researches were focalised on the geochemistry of fluid-rock-gas interaction processes relative to the underground storage of CO2 and radioactive waste, and diagenetic processes in North Sea oil fields. Since 1987, he leads studies in geothermal exploration, reservoir characterization and monitoring in French ultramarine Islands (Guadeloupe, Martinique, Reunion, Mayotte, and New Caledonia) and other countries as Djibouti, Iceland, Mexico, Dominican Republic, and Chile. Its contribution was important to increase the production of the Bouillante geothermal power plant in Guadeloupe from 4.5 to 15 MWe, in 2005, and develop the associated field in the future. Since 1998, he also contributes to the development of EGS (Enhanced Geothermal Systems) and lithium exploitation in Rhine Graben areas, in Alsace. He has developed new chemical geothermometers for geothermal exploration and tracer tests for reservoir management. He has been member of the Scientific Committee of the G-EAU-THERMIE LABEX of the Strasbourg University from 2015 to 2019. He has contributed to more than 100 reports and over 50 international publications. He is member of the Editorial Board of the Geothermal Energy Journal and rewiever in international geothermal and geochemical journals.
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