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dc.contributor.authorOchoa González, Raquel-
dc.contributor.authorDíaz Somoano, Mercedes-
dc.contributor.authorMartínez Tarazona, María Rosa-
dc.identifier.citationJournal of Environmental Management 120: 55-60 (2013)es_ES
dc.description.abstract[EN] Elemental mercury in flue gases from coal combustion is difficult to control. However, oxidized mercury species are soluble in water and can be removed with a high degree of efficiency in wet flue gas desulphurization (WFGD) systems operating in coal combustion plants, provided that no re-emissions occur. In this article the mechanisms affecting the re-emission of oxidized mercury species in WFGD conditions via sulphite ions are discussed. The parameters studied include the operating temperature, the pH, the redox potential, the concentrations of mercury and oxygen in the flue gas and the concentration of reductive ions in the solution. The results show that temperature, pH and the concentration of mercury at the inlet of the WFGD systems are the most important factors affecting oxidized mercury removal. The results indicate that sulphite ions, not only contribute to the reduction of Hg2+, but that they may also stabilize the mercury in the liquid fraction of the WFGD limestone slurry. Consequently, factors that increase the sulphite content in the slurry such as a low oxygen concentration promote the co-capture of mercury with sulphur.es_ES
dc.description.sponsorshipThis work was financed by the projects PI-200780I008 (PI Programme-CSIC) and CTM2011-22921. R. Ochoa-González thanks FICYT (Regional research programme) for funding her PhD work through a fellowship.es_ES
dc.subjectRe-emission of mercuryes_ES
dc.subjectMercury speciationes_ES
dc.subjectWet flue gas desulphurizationes_ES
dc.titleThe capture of oxidized mercury from simulated desulphurization aqueous solutionses_ES
dc.description.peerreviewedPeer reviewedes_ES
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