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dc.contributor.authorMartín Torre, María del Camino 
dc.contributor.authorPayan Fraile, María de la Cruz 
dc.contributor.authorGalán Corta, Berta 
dc.contributor.authorCoz Fernández, Alberto 
dc.contributor.authorViguri Fuente, Javier Rufino 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.identifier.otherCTM 2011-28437-C02-01es_ES
dc.description.abstractThis study provides a better knowledge of key parameters controlling the mobility of Dissolved Organic Carbon (DOC), As, Cd, Cr, Cu, Ni, Pb and Zn from contaminated marine sediment in contact with acidified seawater using static and dynamic standard leaching tests. These procedures have been modified in order to use different leaching agents, L/S ratios, contact times and pH values that simulate seawater acidification under CO2 leakages scenarios. Studied sediment from a potential area of CO2 storage, shows a high acid neutralisation capacity (ANC pH = 4 = 3.58 eq/kg) for deionised water as well as for seawater (ANC pH = 4 = 3.97 eq/kg). The availability control mechanism is shown by releasing Cd with seawater at pH values 6, 7 and 8 and by the releasing of Zn with seawater at pH 6; the solubility control mechanism appears for Ni release using natural seawater. Experimental results of metal release from the pH dependence leaching test are modelled with Visual MINTEQ geochemical software to predict metal release from sediment, obtaining minor differences with experimental values. An improvement in the metal release results has been obtained considering in the model the influence of the DOC, Fe- and Al-(hydr)oxides, humic acids and fulvic acids. The obtained results would be useful as a line of evidence input for the risk assessment of a Carbon Capture and Storage site where acidified seawater at different concentrations of CO2 is in contact with sediment.es_ES
dc.description.sponsorshipThis work was supported with the financial help of the Spanish Ministry of Economy and Competitiveness, Project CTM 2011-28437-C02-01, ERDF included. M. Camino Martín-Torre was funded by the Spanish Ministry of Economy and Competitiveness by means of an F.P.I. fellowship.es_ES
dc.format.extent8 p.es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaes_ES
dc.sourceEnergy Procedia, 2014, Vol. 51, 40 – 47es_ES
dc.subject.otherMetal releasees_ES
dc.subject.otherCO2 leakagees_ES
dc.subject.otherleaching testses_ES
dc.titleThe use of leaching tests to assess metal release from contaminated marine sediment under CO2 leakages from CCSes_ES

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Atribución-NoComercial-SinDerivadas 3.0 EspañaExcept where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España