Naslov
Reduction of azo dyes with sodium hypophosphite in order to minimize wastewater pollution

Autori
Koprivanac, Natalija, Papić, Sanja ; Meteš, Azra ; Malojčić, Rajko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Proceedings,18th IFATCC Congres 1999 / - Kopenhagen, 1999

Skup
18th IFATCC Congres 1999

Mjesto i datum
Kopenhagen, Danska, 08.09.1999. - 10.09.1999

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
azo dyes; reduction

Sažetak
In order to decolorize wastewaters in the production and application processes of azo dyes, reduction is one of the commonly used method if the obtaining of primary amines is in permisive range or if they could be used as a secondary raw material or even more as a drug, what is a case with C.I.Mordant Yellow 10. In the present work, sodium hypophosphite has been used for reduction of chosen azo dyes. The application of this reducant to the system containing azo compounds has not been described in the literature. Considering the need for wastewater pollution minimization, the phosphites are more convinient for the environment than sulphates. The coagulation/flocculation method for wastewater treatment has been used after isolation of aromatic amines. The evaluation of treated water quality has been based on determined ecological parameters: COD, BOD, TOC and AOX.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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