Liquid purification or separation – Processes – Chemical treatment
Patent
1983-01-03
1983-11-15
Therkorn, Ernest G.
Liquid purification or separation
Processes
Chemical treatment
210758, 210766, C02F 170, C02F 172
Patent
active
044154615
ABSTRACT:
A process for destroying primary aromatic amines in residual waters by treating the residual waters containing said amines at a temperature between 40.degree. C. and 90.degree. C. and for a period longer than 5 minutes with a mixture of sulfuric acid and nitric acid or with a mixture of a solution of an alkali metal or ammonium nitrite and an acid, the final pH of the reaction medium being lower than 3.
REFERENCES:
patent: 3540189 (1970-11-01), Siewers
Bertaux Paul
Grosmaitre Andre M. J.
Mansel Jean E.
Masson Charlie M. P.
PCUK - Produits Chimiques Ugine Kuhlmann
Therkorn Ernest G.
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