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The adsorption of chromate on kaolin/humic acid was studied at various conditions of initial solution pH, ionic strength, water hardness and temperatures. The increased adsorption of chromate in the presence of HA was attributed to the reducing action and complexation of HA. The addition of inorganic salts (Na + , Ca 2+ and Mg 2+ ) reduced the adsorption of chromate because...
The adsorption of cationic polymer, i.e., epicholorohydrin-dimethylamine polyamine (EPI-DMA), on bentonite particles was investigated under various conditions of bulk polymer concentration, pH, inorganic salts, and temperature. The resulting high adsorption rate and alkaline solution (pH=7–11) effect indicated a strong electrostatic interaction between the clay particles and EPI-DMA molecules. Addition...
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