Potential influence of CO2 release from a carbon capture storage site on release of trace metals from marine sediment

被引：38
|
作者：
Cruz Payan, M. [1 ,2 ]
Verbinnen, Bram [2 ]
Galan, Berta [1 ]
Coz, Alberto [1 ]
Vandecasteele, Carlo [2 ]
Viguri, Javier R. [1 ]
机构：
[1] Univ Cantabria, ETSIIT, Dept Chem Engn & Inorgan Chem, E-39005 Santander, Spain
[2] Univ Leuven, Dept Chem Engn, B-3001 Heverlee, Belgium
来源：
ENVIRONMENTAL POLLUTION | 2012年 / 162卷
关键词：
Sediment; CO2; leakage; Metal mobility; Equilibrium leaching tests; Geochemical modeling; HEAVY-METALS; OCEAN ACIDIFICATION; CONTAMINATED SOILS; LEACHING BEHAVIOR; PH; MOBILITY; WASTE; TESTS; RISK; MSWI;
D O I：
10.1016/j.envpol.2011.10.015
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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.
引用
收藏
页码：29 / 39
页数：11
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