ConferencePaper
WATER SCIENCE AND TECHNOLOGY  (1999)

Chemical degradation of EDTA and DTPA in a totally chlorine free (TCF) effluent

Rodriguez J.B.; Mutis, A; Yeber M.C.; Freer J.; Baeza J.; Mansilla H.D.

Keywords: oxidation, acid, performance, oxygen, chromatography, degradation, hydrogen, pulp, effluent, treatment, liquid, paper, ozone, vanillin, edta, effluents, demand, mill, chlorine, mills, peroxide, chemical, chelation, conference, and, Free, High, Acetic, edetic, Formic, Chelants, Totally, (TCF), Ozonization, glyoxal, pentetic

Abstract

In this work, a synthetic TCF effluent containing vanillin, glyoxal, sodium formate, sodium acetate and the chelanting agents EDTA and DTPA was treated using, O3, O3/H2O2, O3/UV, UV, UW H2O2 and UV/H2O2/O3 at pH 7 and 11. The best results were obtained in the O3/UV process. Ozone alone did not degrade EDTA neither DTPA. A combined O3/UV (pH 7.0 by 15 min)- biological treatment was very efficient in the removal of the chelants (98 %) and COD (95 %).

Más información

Título de la Revista: WATER SCIENCE AND TECHNOLOGY
Volumen: 40
Número: 11-12
Editorial: IWA Publishing
Fecha de publicación: 1999
Página de inicio: 267
Página final: 272
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-2542509126&partnerID=q2rCbXpz
DOI:

10.1016/S0273-1223(99)00727-1