Treatment of dairy wastewaters by electrocoagulation using mild steel electrodes

被引：197

作者：

Sengil, I. Ayhan ^{[1
]}

ozacar, Mahmut

机构：

[1] Sakarya Univ, Fac Engn, Dept Environm Engn, TR-54100 Sakarya, Turkey

[2] Sakarya Univ, Dept Chem, Sci & Arts Fac, TR-54100 Sakarya, Turkey

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2006年 / 137卷 / 02期

关键词：

dairy wastewater; DC; electrocoagulation (EC); iron electrode; COD; oil and grease;

D O I：

10.1016/j.jhazmat.2006.04.009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The removal of COD and oil-grease from dairy wastewater was experimentally investigated using direct current (DC) electrocoagulation (EC). In the EC of dairy wastewater, the effects of initial pH, electrolysis time, initial concentration of COD, conductivity and current density were examined. The COD and oil-grease in the aqueous phase were effectively removed when iron was used as sacrificial anode. The optimum operating range for each operating variable was experimentally determined. The batch experimental results revealed that COD and oil-grease in aqueous phase was effectively removed. The overall COD and oil-grease removal efficiencies reached 98 and 99%, respectively. The optimum current density, pH and electrolysis time for 18,300 mg COD/L and 4570 mg oil-grease/L were 0.6 mA/cm(2), 7 and 1 min, respectively. Mean energy consumption was 0.003 kWh/kg of COD. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1197 / 1205

页数：9

共 64 条

[1] Decolourization and removal of phenolic compounds from olive mill wastewater by electrocoagulation [J].

Adhoum, N ;

Monser, L .

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2004, 43 (10) :1281-1287

[2] Treatment of electroplating wastewater containing Cu2+, Zn2+ and Cr(VI) by electrocoagulation [J].

Adhoum, N ;

Monser, L ;

Bellakhal, N ;

Belgaied, JE .

JOURNAL OF HAZARDOUS MATERIALS, 2004, 112 (03) :207-213

[3]

[Anonymous], 1992, STAND METH EX WAT WA

[4] Aerobic granulation with industrial wastewater in sequencing batch reactors [J].

Arrojo, B ;

Mosquera-Corral, A ;

Garrido, JM ;

Méndez, R .

WATER RESEARCH, 2004, 38 (14-15) :3389-3399

[5] Membrane sequencing batch reactor system for the treatment of dairy industry wastewater [J].

Bae, TH ;

Han, SS ;

Tak, TM .

PROCESS BIOCHEMISTRY, 2003, 39 (02) :221-231

[6]

Balasubramanian N, 2001, CHEM ENG TECHNOL, V24, P519, DOI 10.1002/1521-4125(200105)24:5<519::AID-CEAT519>3.0.CO

[7]

2-P

[8] Chemical and electrochemical considerations on the removal process of hexavalent chromium from aqueous media [J].

Barrera-Díaz, C ;

Palomar-Pardavé, M ;

Romero-Romo, M ;

Martínez, S .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2003, 33 (01) :61-71

[9] Combined electrochemical-irradiation treatment of highly colored and polluted industrial wastewater [J].

Barrera-Díaz, C ;

Ureña-Nuñez, F ;

Campos, E ;

Palomar-Pardavé, M ;

Romero-Romo, M .

RADIATION PHYSICS AND CHEMISTRY, 2003, 67 (05) :657-663

[10]

Baskaran K, 2000, WATER SCI TECHNOL, V3, P85

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