Physicochemical treatments of anionic surfactants wastewater: Effect on aerobic biodegradability

被引：122

作者：

Aloui, Fathi ^{[1
]}

Kchaou, Sonia ^{[1
]}

Sayadi, Sami ^{[1
]}

机构：

[1] Ctr Biotechnol Sfax, Lab Bioprocedes, Pole Excellence Reg AUF, Sfax 3018, Tunisia

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 164卷 / 01期

关键词：

Biodegradation; Citrobacter braakii; Electro-coagulation; Electro-Fenton; Anionic surfactant wastewater; FENTON PROCESS; OIL; PRETREATMENT; COAGULATION; DEGRADATION;

D O I：

10.1016/j.jhazmat.2008.08.009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of different physicochemical treatments on the aerobic biodegradability of an industrial wastewater resulting from a cosmetic industry has been investigated. This industrial wastewater contains 11423 and 3148 mg L-1 of chemical oxygen demand (COD) and anionic surfactants, respectively. The concentration of COD and anionic surfactants were followed throughout the diverse physicochemical treatments and biodegradation experiments. Different pretreatments of this industrial wastewater using chemical flocculation process with lime and aluminium sulphate (alum), and also advanced oxidation process (electro-coagulation (Fe and Al) and electro-Fenton) led to important COD and anionic surfactants removals. The best results were obtained using electro-Fenton process, exceeding 98 and 80% of anionic surfactants and COD removals, respectively. The biological treatment by an isolated strain Citrobacter braakii of the surfactant wastewater, as well as the pretreated wastewater by the various physicochemical processes used in this study showed that the best results were obtained with electro-Fenton pretreated wastewater. The characterization of the treated surfactant wastewater by the integrated process (electro-coagulation or electro-Fenton)-biological showed that it respects Tunisian discharge standards. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：353 / 359

页数：7

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