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Evaluation through column leaching tests of metal release from contaminated estuarine sediment subject to CO2 leakages from Carbon Capture and Storage sites

Abstract: The pH change and the release of organic matter and metals from sediment, due to the potential CO2 acidified seawater leakages from a CCS (Carbon Capture and Storage) site are presented. Column leaching test is used to simulate a scenario where a flow of acidified seawater is in contact with recent contaminated sediment. The behavior of pH, dissolved organic carbon (DOC) and metals As, Cd, Cr, Cu, Ni, Pb, Zn, with liquid to solid (L/S) ratio and pH is analyzed. A stepwise strategy using empirical expressions and a geochemical model was conducted to fit experimental release concentrations. Despite the neutralization capacity of the seawater-carbonate rich sediment system, important acidification and releases are expected at local scale at lower pH. The obtained results would be relevant as a line of evidence input of CCS risk assessment, in an International context where strategies to mitigate the climate change would be applied.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Payán M., Galan B., Coz A., Vandecasteele C., Viguri J.,

 Fuente: Environmental Pollution, 2012, 171, 174-184

Editorial: Elsevier

 Fecha de publicación: 01/12/2012

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.envpol.2012.07.029

ISSN: 0269-7491,1873-6424

 Proyecto español: CTM 2008-06344-CO3-01 ; CTM 2011-28437-CO2-01

Url de la publicación: https://doi.org/10.1016/j.envpol.2012.07.029