Effects of an electric field and zero valent iron on anaerobic treatment of azo dye wastewater and microbial community structures

被引：68
作者：
Liu, Yiwen [1 ]
Zhang, Yaobin [1 ]
Quan, Xie [1 ]
Zhang, Jingxin [1 ]
Zhao, Huimin [1 ]
Chen, Shuo [1 ]
机构：
[1] Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn, Sch Environm Sci & Technol, Minist Educ, Dalian 116024, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 03期
关键词：
Anaerobic reactor; Zero valent iron; Decolorization; Electric field; Microbial community structure; CONGO RED; DECOLORIZATION; REDUCTION; BIODEGRADATION; DIGESTION; BACTERIA; REACTOR;
D O I：
10.1016/j.biortech.2010.11.109
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A zero valent iron (ZVI) bed with a pair of electrodes was packed in an anaerobic reactor aiming at enhancing treatment of azo dye wastewater. The experiments were carried out in three reactors operated in parallel: an electric field enhanced ZVI-anaerobic reactor (R1), a ZVI-anaerobic reactor (R2) and a common anaerobic reactor (R3). R1 presented the highest performance in removal of COD and color. Raising voltage in R1 further improved its performance. Scanning electron microscopy images displayed that the structure of granular sludge from RI was intact after being fed with the high dye concentration, while that of R3 was broken. Fluorescence in situ hybridization analysis indicated that the abundance of methanogens in R1 was significantly greater than that in the other two reactors. Denaturing gradient gel electrophoresis showed that the coupling of electric field and ZVI increased the diversity of microbial community and especially enhanced bacterial strains responsible for decolorization. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
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收藏
页码：2578 / 2584
页数：7
相关论文
共 35 条
[1]  
APHA (AMERICAN PUBLIC HEALTH ASSOCIATION), 1995, Standard Methods for the Examination of Water and Waste Water
[2]   Biodiversity and dye decolourization ability of an acclimatized textile sludge [J].
Bafana, Amit ;
Chakrabarti, Tapan ;
Krishnamurthi, Kannan ;
Devi, Sivanesan Saravana .
BIORESOURCE TECHNOLOGY, 2008, 99 (11) :5094-5098
[3]   Monoazo and diazo dye decolourisation studies in a methanogenic UASB reactor [J].
Brás, R ;
Gomes, A ;
Ferra, MIA ;
Pinheiro, HM ;
Gonçalves, IC .
JOURNAL OF BIOTECHNOLOGY, 2005, 115 (01) :57-66
[4]   Anthraquinone-2,6-disulfonate (AQDS) as a catalyst to enhance the reductive decolourisation of the azo dyes Reactive Red 2 and Congo Red under anaerobic conditions [J].
Costa, M. C. ;
Mota, S. ;
Nascimento, R. F. ;
Dos Santos, A. B. .
BIORESOURCE TECHNOLOGY, 2010, 101 (01) :105-110
[5]   Azo dye reduction by mesophilic and thermophilic anaerobic consortia [J].
dos Santos, AB ;
de Madrid, MP ;
Stams, AJM ;
van Lier, JB ;
Cervantes, FJ .
BIOTECHNOLOGY PROGRESS, 2005, 21 (04) :1140-1145
[6]   Review paper on current technologies for decolourisation of textile wastewaters: Perspectives for anaerobic biotechnology [J].
dos Santos, Andre B. ;
Cervantes, Francisco J. ;
van Lier, Jules B. .
BIORESOURCE TECHNOLOGY, 2007, 98 (12) :2369-2385
[7]   The contribution of fermentative bacteria and methanogenic archaea to azo dye reduction by a thermophilic anaerobic consortium [J].
dos Santos, Andre B. ;
de Madrid, Marta P. ;
de Bok, Frank A. M. ;
Stams, Alfons J. M. ;
van Lier, Jules B. ;
Cervantes, Francisco J. .
ENZYME AND MICROBIAL TECHNOLOGY, 2006, 39 (01) :38-46
[8]   SODIUM INHIBITION IN THE ANAEROBIC-DIGESTION PROCESS - ANTAGONISM AND ADAPTATION PHENOMENA [J].
FEIJOO, G ;
SOTO, M ;
MENDEZ, R ;
LEMA, JM .
ENZYME AND MICROBIAL TECHNOLOGY, 1995, 17 (02) :180-188
[9]   Colour removal of dyes from synthetic and real textile wastewaters in one- and two-stage anaerobic systems [J].
Firmino, Paulo Igor M. ;
da Silva, Marcos Erick R. ;
Cervantes, Francisco J. ;
dos Santos, Andre B. .
BIORESOURCE TECHNOLOGY, 2010, 101 (20) :7773-7779
[10]  
Griffin ME, 1998, BIOTECHNOL BIOENG, V57, P342, DOI 10.1002/(SICI)1097-0290(19980205)57:3<342::AID-BIT11>3.0.CO
1234