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Paper Details

Mercury Removal from Aqueous Solution using Mixed Mineral Systems Injected with Iron Sulfide under Sulfidic- Anoxic Condition II. The Role of Solution Composition and Ageing

D.E. Egirani1, J.E. Andrews2, A.R. Baker2

Journal Title:Journal of Chemical, Biological and physical sciences
Abstract


This study investigates Hg (II) removal onto binary mixed mineral sorbents injected with iron sulfide under sulfidic-anoxic condition relevant to mercury contaminated water impacted environment. Batch mode studies at room temperature investigated the effects of solution composition and ageing. Variability in Hg(II) sorption exist over the range of pH investigated, exhibiting linear sorption for iron sulfide and some of the mixed mineral systems, Also, changes in Hg(II) sorption as particle concentration (Cp) increased exist, with iron sulfide and some mixed mineral systems exhibiting a linear decrease in Hg(II) sorption as Cp increases. All single and mixed mineral systems exhibit a near linear decrease in Hg(II) sorption over the range of residence time investigated .Hg(II) step-wise sorption probably indicates reaction phases attributed to outer sphere, inner sphere complexation and intra-particle diffusion.

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