Naslov
Decolourization of Wastewater from Production of Azo Dye by Reduction Method Using Chosen Agents

Autori
Koprivanac, Natalija ; Vujević, Dinko ; Malojčić, Rajko ; Papić, Sanja

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

Izvornik
MATH/CHEM/COMP'99 / Graovac, Ante ; Smrečki, Vilko ; Vikić-Topić, Dražen - Dubrovnik, 1999

Skup
MATH/CHEM/COMP'99

Mjesto i datum
Dubrovnik, Hrvatska, 21.06.1999. - 26.06.1999

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Obezbojavanje; otpadne vode; azo bojila; redukcija
(Decolourization; wastewater; azo dyes; reduction)

Sažetak
Coloured wastewater consisting of water-soluble azo dyes can be treated by reduction method. This reductive treatment leads to chemical spliting of the azo bond and smaller molecules of aromatic amines were obtained. In comparison to the parent dye compound, such smaller molecules are mostly colourless and can be more chemically oxidized, adsorbed on carbon, precipitated by polycationic agents and metabolized by microrganisms from activated sludge. In this study, azo dye Mordant Orange 1 (C.I. 14030) was produced in order to characterize obtained wastewater. The wastewater was treated by reduction method using sodium hypophosphite, sodium hypobisulphite and sodium bisulphite combined with sodium borohydride. The effectiveness of reductive treatment using different agents was evaluated on the basis of decreased loading of wastewater, established by percentage of colour removal and values of basic ecological parameters such as COD, BOD and TOC.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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