{"674844":{"#nid":"674844","#data":{"type":"event","title":"PhD Defense by Zhao Xia","body":[{"value":"\u003Cp\u003ESchool of Civil and Environmental Engineering\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EPh.D. Thesis Defense Announcement\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003ECO2 MINERALIZATION IN BASALTIC ROCKS\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EBy\u003C\/strong\u003E\u0026nbsp;Zhao Xia\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAdvisor:\u003C\/strong\u003E\u0026nbsp;Dr. J. Carlos Santamarina (CEE)\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Haiying Huang (CEE) | Dr. Susan E. Burns (CEE)\u003C\/p\u003E\u003Cp\u003EDr. D. Nicolas Espinoza (PGE, UT Austin) | Dr. Costas Tsouris (ORNL\/CEE)\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EDate and Time:\u003C\/strong\u003E\u0026nbsp;June 6, 2024. 8:30 AM EST\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ELocation:\u003C\/strong\u003E\u0026nbsp;Mason 2119 | Zoom: \u003Ca href=\u0022https:\/\/gatech.zoom.us\/j\/99933613428\u0022\u003Ehttps:\/\/gatech.zoom.us\/j\/99933613428\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EABSTRACT\u003Cbr\u003ECarbon geological storage by mineralization presents a promising strategy for\u003Cbr\u003Eclimate change mitigation due to its long-term stability and substantial storage\u003Cbr\u003Epotential. The injection of CO2-saturated water triggers sequential mineral\u003Cbr\u003Edissolution and precipitation fronts that progressively alter rock porosity and\u003Cbr\u003Epermeability, and modify flow pathways in a self-homogenizing mineralization\u003Cbr\u003Eprocess. Eventually these coupled processes affect the injection performance,\u003Cbr\u003Estorage capacity and reservoir stability. This study explores the intricate interplay\u003Cbr\u003Eamong mineralogy, pore structure, fluid chemistry, and the impacts of dissolutionprecipitation\u003Cbr\u003Eon coupled fluid transport. First, we establish causal connections between basalt genesis and the ensuing pore structures, and investigate the impact\u003Cbr\u003Eof pore structure on connectivity, permeability and accessible pore-matrix surface\u003Cbr\u003Earea of basaltic rocks. We then identify the key minerals governing overall rock\u003Cbr\u003Edissolution and quantify the reactivity and CO2 mineral trapping capacity of both\u003Cbr\u003Ebasalt and basaltic sediments. Next, we study the fluid-rock interactions during\u003Cbr\u003Ediffusive and advective transport. Sequential tomographic images and\u003Cbr\u003Ecomplementary reactive-transport modeling allow us to elucidate the evolution of\u003Cbr\u003Efracture-matrix interaction in the near and far-field of the injection well. Different\u003Cbr\u003Einjection strategies are assessed using a high-temperature and high-pressure\u003Cbr\u003Ereactive flow-through device to formulate optimized injection protocols tailored to\u003Cbr\u003Ediverse field conditions, aiming to enhance field-scale CO2 mineralization. Finally,\u003Cbr\u003Ewe explore the local controls on mineral precipitation using Marangoni flow to\u003Cbr\u003Emitigate near-wellbore salt accumulation during undersaturated CO2 injection. The\u003Cbr\u003Efindings of this study support the improved assessment of mineral trapping\u003Cbr\u003Eefficiency and reservoir storage capacity, and provide valuable insights for fluid\u003Cbr\u003Eselection during injection with implications for site identification for carbon\u003Cbr\u003Egeological storage.\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003ECO2 MINERALIZATION IN BASALTIC ROCKS\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"CO2 MINERALIZATION IN BASALTIC ROCKS"}],"uid":"27707","created_gmt":"2024-05-21 20:05:55","changed_gmt":"2024-05-21 20:06:31","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2024-06-05T08:30:30-04:00","event_time_end":"2024-06-05T10:00:00-04:00","event_time_end_last":"2024-06-05T10:00:00-04:00","gmt_time_start":"2024-06-05 12:30:30","gmt_time_end":"2024-06-05 14:00:00","gmt_time_end_last":"2024-06-05 14:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Mason 2119 | Zoom","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}