Polymers to Selectively Remove Oxidizing Anions from Non-Oxidizing Anions and NO₃⁻ and NO₂⁻ and NO₂⁻ From Polluted Waters

Abstract

A copolymer of 1-phenyl-2-diethylaminoethyl-p-aminobenzoate and polyvinyl-benzyl chloride was found to have a greater capacity for NO₃ ⁻ and NO₂ ⁻ than a previously reported nitron polymer but did not react as rapidly. The resin is readily regenerated with NH₄OH or NH₄Cl and is not affected by the pH of the water over the range of 4–10.

A copolymer of 1-(4′-nitrophenyl)-2-diethyl aminoethyl-p-nitrobenzoate and polyvinylbenzyl chloride was found to react nearly as fast as the nitron polymer and have a larger capacity for NO₃ ⁻ and NO₂ ⁻.

Key Words:

• Polymer
• nitrate
• nitrite