Elimination of hydroxylammonium salts from wastewaters containing such salts

US4927542A · kind A · utility

Assignee

• BASF SE

Inventors

• Hugo Fuchs · Ludwigshafen, DE
• David Agar · Rimbach, DE

Key dates

• Filing date: Sep 19, 1989
• Grant date: May 22, 1990
• Expiry date: Sep 19, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/72
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Hydroxylammonium salts are eliminated from wastewaters containing such salts by a process which comprises treating a wastewater containing such salts with not less than 0.5 mole of manganese (IV) oxides per mole of hydroxylamine in the form of hydroxylammonium salts at a pH of from 1 to 4 and at from 10.degree. to 100.degree. C.