Decolorization of Reactive Red 195 by a mixed culture in an alternating anaerobic-aerobic Sequencing Batch Reactor

被引:34
作者
Farabegoli, G. [1 ]
Chiavola, A. [1 ]
Rolle, E. [1 ]
Naso, M. [1 ]
机构
[1] Univ Roma La Sapienza, Fac Engn, Dept Hydraul Transportat & Rd, I-00184 Rome, Italy
关键词
Azo dye; Decolorization kinetics; Reactive Red 195; Sequencing Batch Reactor; Textiles; COD REMOVAL PERFORMANCE; DYE WASTE-WATER; AZO DYES; AROMATIC-AMINES; DEGRADATION; COLOR; SBR; BIODEGRADATION; PERSPECTIVES; PARAMETERS;
D O I
10.1016/j.bej.2010.08.014
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The mono-azo dye Reactive Red 195 (RR 195) is a widely used color compound in the textile industry As many other colors it is persistent and difficult to be removed from water with conventional processes The present study investigates biological decolorization of RR 195 under alternate anaerobic-aerobic conditions in a laboratory scale Sequencing Batch Reactor (SBR) containing a mixed culture and fed with a biodegradable carbon source Different values of the Sludge Retention Time (SRT) Hydraulic Retention Time (HRT) influent color and organic carbon loadings were adopted during the experimental activity and their effects on color and Chemical Oxygen Demand (COD) removal efficiencies and process kinetics determined The optimal operating conditions were found to be 800 mg l(-1) Influent COD 50d SRT and a 24 h-cycle Under these conditions the maximum color efficiency of 97% was achieved for a 40 mg l(-1) RR 195 in the feed Some inhibition was present at influent color loadings above 40 mg l(-1) which was confirmed by the application of the Haldane model (C)2010 Elsevier BV All rights reserved
引用
收藏
页码:220 / 226
页数:7
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