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In this study, the influence of organic matter on As(V) adsorption onto clay minerals was evaluated through batch experiments using three solid phases: crude kaolinite, humic acid (HA)-coated kaolinite and heavy oil cut (HOC)-coated kaolinite. In all cases, the adsorption isotherms fitted the Freund equation. Adsorption onto the coated kaolinites was significantly higher than onto the crude kaolinite,...
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