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The Treatment of Azo Dyes Found in Textile Industry Wastewater by Anaerobic Biological Method and Chemical Oxidation by Orçun Türgay; Gülin Ersöz; Süheyda Atalay; Jörgen Forss; Ulrika Welander is a Engineering article available to read on EtoBox.

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The treatment of synthetic wastewater containing azo dyes found in textile industry wastewater was carried out by anaerobic biological method and chemical oxidation. The main target of this study was to compare different treatment methods and to evaluate the effect of different parameters on treatment effectiveness. In the microbial process, the results have shown that increasing the residence time, the amount of yeast extract and the addition of microorganisms originally growing on forest residues had positive effects on the dye removal. In the catalytic wet peroxide oxidation process, CWPO, the reaction conditions were optimized at 0.5 g/L activated carbon loading with 2 mL H 2 O 2 /300 mL solution (35 wt%), at 80 • C, in 2 h with pH = 3. At the optimum conditions, approximately 93% of the dye was removed. At these optimized conditions, the CWPO process was tested with real textile industry wastewater. The percentage of dye removal with this wastewater was 50%. The adsorption effect of the activated carbon was also investigated. At pH = 7, the removal by just adsorption was around 15%. But in acidic conditions (pH = 3) and at higher temperatures the adsorption effect of activated

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Author

Orçun Türgay; Gülin Ersöz; Süheyda Atalay; Jörgen Forss; Ulrika Welander

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 1383-5866)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)