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김동표,고중곤,정애영,문용택 한국공업화학회 1998 응용화학 Vol.2 No.1
We were chosen Seongnam sludge with the highest ratio of Al₂O₃/SiO(0.912) and Sukseong sludge with the lowest ratio of Al₂O₃/SiO₂(0.345) out of various sludges. It has been investigated the relationship between Al₂O₃/SiO₂ and its adsorption capability, then make criteria to choose the optimum sludge for final applications. The adsorption properties of heat-treated sludges were determined with the following parameters; three types of heavy metal ions(Cd^(+3), Cr^(+6), Pb^(+3)), the concentration, adsorption period and pH of the solutions.