Pilot-scale removal of chromium from industrial wastewater using the ChromeBac™ system

被引：34

作者：

Ahmad, Wan Azlina ^{[1
]}

Zakaria, Zainul Akmar ^{[1
]}

Khasim, Ali Reza ^{[1
]}

Alias, Muhamad Anuar ^{[1
]}

Ismail, Shaik Muhammad Hasbullah Shaik ^{[1
]}

机构：

[1] Univ Teknol Malaysia, Fac Sci, Dept Chem, Skudai 81310, Johor, Malaysia

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 12期

关键词：

Detoxification; Electroplating; Acinetobacter; Cr(VI); Pineapple wastewater; HEXAVALENT CHROMIUM; BIOLOGICAL REDUCTION; CR(VI); FILTER;

D O I：

10.1016/j.biortech.2010.01.106

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The enzymatic reduction of Cr(VI) to Cr(III) by Cr(VI) resistant bacteria followed by chemical precipitation constitutes the ChromeBac (TM) system. Acinetobacter haemolyticus was immobilized onto carrier material inside a 0.2 m(3) bioreactor. Neutralized electroplating wastewater with Cr(VI) concentration of 17-81 mg L-1 was fed into the bioreactor (0.11-0.33 m(3) h(-1)). Complete Cr(VI) reduction to Cr(III) was obtained immediately after the start of bioreactor operation. Together with the flocculation, coagulation and filtration, outflow concentration of less than 0.02 mg Cr(VI) L-1 and 1 mg total Cr L-1 were always obtained. Performance of the bioreactor was not affected by fluctuations in pH (6.2-8.4), Cr(VI) (17-81 mg L-1), nutrient (liquid pineapple waste, 1-20% v/v) and temperature (30-38 degrees C). Standby periods of up to 10 days can be tolerated without loss in activity. A robust yet effective biotechnology to remove chromium from wastewater is thus demonstrated. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4371 / 4378

页数：8

共 16 条

[1]

Ahmad WA, 2009, WATER AIR SOIL POLL, V204, P195, DOI [10.1007/s11270-009-0037-5, 10.1007/s11270-009-003]

[2]

Brunet FB, 2006, J CHEM TECHNOL BIOT, V81, P1506

[3] Hexavalent chromium reduction by Bacillus sp. in a packed-bed bioreactor [J].

Chirwa, EMN ;

Wang, YT .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (05) :1446-1451

[4]

Cushnie G.C., 1985, Electroplating wastewater pollution control technology

[5] A kinetic study of biological Cr(VI) reduction in trickling filters with different filter media types [J].

Dermou, E. ;

Vayenas, D. V. .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 145 (1-2) :256-262

[6] Biological chromium(VI) reduction using a trickling filter [J].

Dermou, E ;

Velissariou, A ;

Xenos, D ;

Vayenas, D .

JOURNAL OF HAZARDOUS MATERIALS, 2005, 126 (1-3) :78-85

[7] Biological reduction of hexavalent chromium - A field study [J].

Ekenberg, M ;

Martander, H ;

Welander, T .

WATER ENVIRONMENT RESEARCH, 2005, 77 (04) :425-428

[8] Performance evaluation of various bioreactors for the removal of Cr(VI) and organic matter from industrial effluent [J].

Elangovan, R. ;

Philip, Ligy .

BIOCHEMICAL ENGINEERING JOURNAL, 2009, 44 (2-3) :174-186

[9]

Greenberg A., 2005, Standard Methods for the Examination of Water and Wastewater, V21st

[10]

Hojo Y, 2000, J HEALTH SCI, V46, P75

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