![\"Prof](\"https:\/\/nus.edu.sg\/neri\/wp-content\/uploads\/bb-plugin\/cache\/Prof-Gaurav-N-Sant-circle.png\" "\\"Prof")
\n\t\t\t\t \n\t\tAbout the Talk<\/b>\u00a0<\/p>\n
The trapping of carbon dioxide (CO2<\/sub>) as an aqueous (bi)carbonate ion (e.g., HCO3<\/sub>–<\/sup>, CO3<\/sub>2-<\/sup>) or as a mineral solid is attractive because of favorable thermodynamics, and the durability and permanence of storage. Here, I will describe an approach to rapidly precipitate Ca- and Mg- carbonates and hydroxides from seawater to achieve large-scale, cost-effective CO2<\/sub> removal. This Equatic process electrolytically forces mineral carbonate precipitation – from seawater – thereby consuming CO2<\/sub> that is dissolved in seawater by locking it within carbonate minerals, and simultaneously producing alkaline mineral hydroxides that when (re)dissolved in seawater enable the drawdown of atmospheric CO2<\/sub>. Specifically, 1 mol of CO2<\/sub> is captured per 2 mol of OH–<\/sup> produced by the formation of 1 mol CaCO3<\/sub>. In addition, only 1.2 mol of OH\u2212<\/sup> are required per 1 mol CO2<\/sub> stored as dissolved HCO3<\/sub>–<\/sup> and CO3<\/sub>2-<\/sup> ions. This is because when dissolved into seawater, every mol of Mg(OH)2<\/sub> leads to the absorption of up to ~1.7 mol of CO2<\/sub>. In addition, I will describe the translational design, fabrication, commissioning and operations of pilot plants in Singapore and Los Angeles which demonstrate a net energy intensity (NEI) of ~1-to-1.5 MWh per tonne of atmospheric CO2<\/sub> removal.<\/p>\n <\/p>\n About the speaker:<\/strong><\/p>\n Gaurav is a Professor and the Pritzker Endowed Chair in Sustainability at the Samueli School of Engineering at the University of California, Los Angeles (UCLA). He holds faculty appointments in the Departments of Civil and Environmental Engineering, Materials Science and Engineering, and the California Nanosystems Institute. Gaurav has published over 200 publications and has an h-index of 55. He is also the Director of UCLA’s Institute for Carbon Management (ICM): a cross-campus technology translation institute. Gaurav is the Co-Founder of SeaChange Inc., the Grand Prize Winner of the Temasek Foundation’s 2021 Liveability Challenge, the Co-Founder of Concrete-AI Inc., the Co-Founder of Nextli Technologies Inc., the Co-Founder of x\/44, and the Founder of CarbonBuilt Inc., a Grand Prize Winner of the NRG COSIA Carbon XPRIZE, and a GlobalTop10 Innovation selected at The International Cool Earth Forum 2018. Gaurav has served as an expert providing: a) testimony to the U.S. Senate, U.S. House of Representatives, and the California State Senate, and b) strategic consulting, core R&D, and innovation support to Fortune500 corporations, government agencies, foundations, and industry organizations globally. Gaurav earned his B.S. (2006), M.S. (2007), and Ph.D. (2009) from Purdue University.<\/p>\n\n","protected":false},"excerpt":{"rendered":" Prof. Gaurav N. Sant Pritzker Professor of SustainabilityFounding Director: Institute for Carbon ManagementUniversity of CaliforniaLos Angeles (UCLA) Equatic: The Development of a Seawater-based Atmospheric Carbon Removal and Hydrogen Co-production Platform […]<\/p>\n","protected":false},"author":11,"featured_media":0,"parent":414,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-6709","page","type-page","status-publish","hentry"],"yoast_head":"\n