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Published on: February 21, 2017
Sorption and precipitation of metals in activated sludge
P S Kodukula1, J W Patterson, R Y Surampalli
1Woodward-Clyde Consultants, Overland Park, Kansas.
Abstract:
A conceptual model describing the relative roles of sorption and precipitation processes for metals in solid-solution suspensions is presented. The model performance is demonstrated using experimental data on sorption and precipitation of metals in samples of activated sludge mixed liquor. Based on the experimental results presented here, it appears that, at total metal and mixed liquor suspended solids concentrations and pH values generally encountered in full-scale municipal (or combined municipal/industrial) activated sludge systems, metals are primarily removed by sorption processes.
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