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- W2137354586 abstract "Simultaneous absorption of mercury (Hg) and chlorine (Cl2) into aqueous sulfite/bisulfite (0 to 1mM S(IV)) at pH 4.7 and 5.7 was measured in a wetted wall column. Experiments were performed at ambient temperature and pressure using 5–40ppm Cl2 and 46 ppb Hg. Absorption was modeled using the theory of mass transfer with chemical reaction. At the gas/liquid interface, chlorine oxidizes the elemental Hg to a more soluble form. The rate constant for the reaction of mercury and chlorine was determined to be 6.1×109l/mols. Mercuric chloride and sodium hypochlorite also enhanced Hg absorption. The addition of sodium chloride did not affect the rate of Hg/Cl2 absorption with S(IV). When no S(IV) was present, the chloride significantly enhanced Hg absorption. Possible reaction pathways are discussed. These results are relevant in the simultaneous removal of chlorine, sulfur dioxide, and elemental mercury from flue gas. A model was developed to predict the expected Hg removal in a limestone slurry scrubber. Mercury removal decreases as the S(IV) concentration increases. The process feasibility will depend on the SO2/S(IV) concentration of the scrubber, the desired Hg removal, and the amount of Cl2 which can be tolerated." @default.
- W2137354586 created "2016-06-24" @default.
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- W2137354586 date "2004-03-01" @default.
- W2137354586 modified "2023-10-18" @default.
- W2137354586 title "Simultaneous absorption of mercury and chlorine in sulfite solutions" @default.
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- W2137354586 doi "https://doi.org/10.1016/j.ces.2003.10.021" @default.
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