Mohamed A Saleh, Huw Shiel, Mary P Ryan, J P Martin Trusler, Samuel Krevor
{"title":"增强湿式超临界二氧化碳中橄榄石的反应活性,实现工程矿物碳封存。","authors":"Mohamed A Saleh, Huw Shiel, Mary P Ryan, J P Martin Trusler, Samuel Krevor","doi":"10.1021/acs.energyfuels.4c04120","DOIUrl":null,"url":null,"abstract":"<p><p>The success of CO<sub>2</sub> mineralization as a potential solution for reducing carbon emissions hinges on understanding chemical interactions between basaltic minerals and CO<sub>2</sub>-charged fluids. This study provides a detailed analysis of olivine dissolution in CO<sub>2</sub>-water mixtures at 90 and 150 °C, 2-9 MPa, and for 8 and 24 h, in both water- and CO<sub>2</sub>-dominant conditions. By using olivine crystal sections instead of powders, surface agitation is prevented, closing the gap between laboratory studies and natural settings. Surface chemistry, texture, and cross-sectional properties were examined pre- and postreaction using a multiscale approach combining spectroscopic and imaging techniques. Results show that wet supercritical CO<sub>2</sub> environments lead to significant olivine dissolution, forming Mg-depleted, Si-enriched etched surfaces, and under certain conditions, the formation of passivating silica precipitates. In contrast, reactions in aqueous fluids caused minimal changes in surface chemistry and texture with no silica precipitation. These observations indicate that reaction extent in the CO<sub>2</sub>-rich phase is greater relative to water-rich mixtures at equivalent temperature, pressure, and reaction duration. The presence of silica precipitates incorporating leached metals indicates limited transport of reactant away from reaction sites in a CO<sub>2</sub>-rich medium. This study semi-quantitatively evaluates reaction extents in both CO<sub>2</sub>-rich and aqueous systems across a wide range of parameters, demonstrating faster mineralization in CO<sub>2</sub>-rich environments and highlighting their potential for enhancing the CO<sub>2</sub> storage efficiency.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 21","pages":"21028-21041"},"PeriodicalIF":5.2000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11551954/pdf/","citationCount":"0","resultStr":"{\"title\":\"Enhanced Olivine Reactivity in Wet Supercritical CO<sub>2</sub> for Engineered Mineral Carbon Sequestration.\",\"authors\":\"Mohamed A Saleh, Huw Shiel, Mary P Ryan, J P Martin Trusler, Samuel Krevor\",\"doi\":\"10.1021/acs.energyfuels.4c04120\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The success of CO<sub>2</sub> mineralization as a potential solution for reducing carbon emissions hinges on understanding chemical interactions between basaltic minerals and CO<sub>2</sub>-charged fluids. This study provides a detailed analysis of olivine dissolution in CO<sub>2</sub>-water mixtures at 90 and 150 °C, 2-9 MPa, and for 8 and 24 h, in both water- and CO<sub>2</sub>-dominant conditions. By using olivine crystal sections instead of powders, surface agitation is prevented, closing the gap between laboratory studies and natural settings. Surface chemistry, texture, and cross-sectional properties were examined pre- and postreaction using a multiscale approach combining spectroscopic and imaging techniques. Results show that wet supercritical CO<sub>2</sub> environments lead to significant olivine dissolution, forming Mg-depleted, Si-enriched etched surfaces, and under certain conditions, the formation of passivating silica precipitates. In contrast, reactions in aqueous fluids caused minimal changes in surface chemistry and texture with no silica precipitation. These observations indicate that reaction extent in the CO<sub>2</sub>-rich phase is greater relative to water-rich mixtures at equivalent temperature, pressure, and reaction duration. The presence of silica precipitates incorporating leached metals indicates limited transport of reactant away from reaction sites in a CO<sub>2</sub>-rich medium. This study semi-quantitatively evaluates reaction extents in both CO<sub>2</sub>-rich and aqueous systems across a wide range of parameters, demonstrating faster mineralization in CO<sub>2</sub>-rich environments and highlighting their potential for enhancing the CO<sub>2</sub> storage efficiency.</p>\",\"PeriodicalId\":35,\"journal\":{\"name\":\"Energy & Fuels\",\"volume\":\"38 21\",\"pages\":\"21028-21041\"},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11551954/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy & Fuels\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1021/acs.energyfuels.4c04120\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/11/7 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q2\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Fuels","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1021/acs.energyfuels.4c04120","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/11/7 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Enhanced Olivine Reactivity in Wet Supercritical CO2 for Engineered Mineral Carbon Sequestration.
The success of CO2 mineralization as a potential solution for reducing carbon emissions hinges on understanding chemical interactions between basaltic minerals and CO2-charged fluids. This study provides a detailed analysis of olivine dissolution in CO2-water mixtures at 90 and 150 °C, 2-9 MPa, and for 8 and 24 h, in both water- and CO2-dominant conditions. By using olivine crystal sections instead of powders, surface agitation is prevented, closing the gap between laboratory studies and natural settings. Surface chemistry, texture, and cross-sectional properties were examined pre- and postreaction using a multiscale approach combining spectroscopic and imaging techniques. Results show that wet supercritical CO2 environments lead to significant olivine dissolution, forming Mg-depleted, Si-enriched etched surfaces, and under certain conditions, the formation of passivating silica precipitates. In contrast, reactions in aqueous fluids caused minimal changes in surface chemistry and texture with no silica precipitation. These observations indicate that reaction extent in the CO2-rich phase is greater relative to water-rich mixtures at equivalent temperature, pressure, and reaction duration. The presence of silica precipitates incorporating leached metals indicates limited transport of reactant away from reaction sites in a CO2-rich medium. This study semi-quantitatively evaluates reaction extents in both CO2-rich and aqueous systems across a wide range of parameters, demonstrating faster mineralization in CO2-rich environments and highlighting their potential for enhancing the CO2 storage efficiency.
期刊介绍:
Energy & Fuels publishes reports of research in the technical area defined by the intersection of the disciplines of chemistry and chemical engineering and the application domain of non-nuclear energy and fuels. This includes research directed at the formation of, exploration for, and production of fossil fuels and biomass; the properties and structure or molecular composition of both raw fuels and refined products; the chemistry involved in the processing and utilization of fuels; fuel cells and their applications; and the analytical and instrumental techniques used in investigations of the foregoing areas.