Selective Removal of Nitrate and Nitrite from Polluted Waters

摘要

The objective of the research project was to synthesize an insoluble polymer to remove nitrate and nitrite from water. A high capacity nitrate- and nitrite-selective polymer was synthesized by attaching nitron to commercial polyvinylbenzyl chloride (60/40 ortho/para isomers). The capacity of this polymer to remove nitrate and nitrite from 10-(3)M solution was 67% and 42%, respectively. The compound 1-phenyl-2-diethylamino-ethyl-4'-aminobenzoate was also synthesized and attached to commercial polyvinylbenzyl chloride (60/40 ortho/para isomers). A polymer was synthesized by attachment of 1-(4'-nitrophenyl)-2-diethyl-aminoethyl-4'-hydroxybenzoate to polyvinylbenzyl chloride (60/40 ortho/para isomers). The capacity of this polymer to remove nitrate and nitrite from aqueous solution was 80% and 68%, respectively. All of the synthesized polymers could be easily regenerated without loss of capacity and used repeatedly providing a possibility for commercial development.