One of the main risks of CCS (Carbon Capture and Storage) is CO2 leakage from a storage site. The influence of CO2 leakage on trace metals leaching from contaminated marine sediment in a potential storage area (Northern Spain) is addressed using standardized leaching tests. The influence of the pH of the leaching solution on the leachates is evaluated using deionized water, natural seawater and acidified seawater at pH = 5, 6 and 7, obtained by CO2 bubbling. Equilibrium leaching tests (EN 12457) were performed at different liquid solid ratios and the results of ANC/BNC leaching test (CEN/TS 15364) were modeled using Visual Minteq. Equilibrium tests gave values of the final pH for all seawater leachates between 7 and 8 due to the high acid neutralization capacity of the sediment. Combining leaching test results and geochemical modeling provided insight in the mechanisms and prediction of trace metals leaching in acidified seawater environment. (C) 2011 Elsevier Ltd. All rights reserved.
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GSA USGS AAAS, Washington, DC 20515 USAGSA USGS AAAS, Washington, DC 20515 USA
Little, M. G.
Jackson, R. B.
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Duke Univ, Dept Biol, Durham, NC 27708 USA
Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USAGSA USGS AAAS, Washington, DC 20515 USA
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Konkuk Univ, Environm Engn, Seoul, South KoreaKonkuk Univ, Environm Engn, Seoul, South Korea
Ko, Daegeun
Yoo, Gayoung
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Kyung Hee Univ, Gyeonggi Do, South KoreaKonkuk Univ, Environm Engn, Seoul, South Korea
Yoo, Gayoung
Yun, Seong-Taek
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Korea Univ, Dept Earth & Environm Sci, Geochem, Seoul, South Korea
Korea Univ, Green Sch, Seoul, South KoreaKonkuk Univ, Environm Engn, Seoul, South Korea
Yun, Seong-Taek
Chung, Haegeun
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Konkuk Univ, Environm Engn, Seoul, South KoreaKonkuk Univ, Environm Engn, Seoul, South Korea
机构:The University of South-Eastern Norway,Faculty of Technology, Natural Sciences, and Maritime Sciences, Department of Process, Energy and Environmental Technology
Osama M. Ibrahim
André Vagner Gaathaug
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机构:The University of South-Eastern Norway,Faculty of Technology, Natural Sciences, and Maritime Sciences, Department of Process, Energy and Environmental Technology
André Vagner Gaathaug
Per Morten Hansen
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机构:The University of South-Eastern Norway,Faculty of Technology, Natural Sciences, and Maritime Sciences, Department of Process, Energy and Environmental Technology
Per Morten Hansen
Dag Bjerketvedt
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机构:The University of South-Eastern Norway,Faculty of Technology, Natural Sciences, and Maritime Sciences, Department of Process, Energy and Environmental Technology
Dag Bjerketvedt
Knut Vaagsaether
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机构:The University of South-Eastern Norway,Faculty of Technology, Natural Sciences, and Maritime Sciences, Department of Process, Energy and Environmental Technology