✦ LIBER ✦

Treatment of wastewater containing dyes used in the Syrian textile industry

✍ Scribed by Saleh El-Kadri; Ousama Dabbit; Hassan Kakhia

Publisher: Wiley (John Wiley & Sons)
Year: 2002
Tongue: English
Weight: 137 KB
Volume: 77
Category: Article
ISSN: 0268-2575
DOI: 10.1002/jctb.537

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✦ Synopsis

Abstract

Three types of wastewater, from commercial dyeings containing reactive, disperse and direct dyes were treated using an organic coagulant at pH 5.5 as a first step, with stirring for 5 min. The second step was oxidation by Fenton's reagent (hydrogen peroxide and iron(II) sulfate) at pH 2.5–3 for 30 min. The pH of the solution was then raised to 7.5–8 where coagulation by iron hydroxide took place over 20 min. Finally, sand filtration was performed. The percentage of color removal from treated wastewater was more than 99.00% and the percentage decrease in COD was more than 96.00%.

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