Abstract
The removal of nitrate ions from aqueous solutions using OPMN-P membranes in the presence of high-molecular amines, such as polyhexamethylene guanidine and aethonium was studied. It was shown that within the range of pH 4–7 the five-fold weight excess of amines makes possible to increase retention of nitrate ions up to 0.83 in case of polyhexamethylene guanidine and up to 0.76 in the case of aethonium. The influence of chlorides on the treatment process was also investigated. The interaction mechanisms in the “membrane-high molecular amine-nitrates” system were discussed.
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