Impact of the redox mediator sodium anthraquinone-2,6-disulphonate (AQDS) on the reductive decolourisation of the azo dye Reactive Red 2 (RR2) in one- and two-stage anaerobic systems

被引：41

作者：

Rodrigues da Silva, Marcos Erick ^{[1
,2
]}

Milen Firmino, Paulo Igor ^{[1
]}

dos Santos, Andre Bezerra ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Hydraul & Environm Engn, BR-60455900 Fortaleza, Ceara, Brazil

[2] Fed Inst Educ Sci & Technol Ceara, Soloral, Ceara, Brazil

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 121卷

关键词：

Anaerobic treatment; Two-stage system; Colour removal; Redox mediator; Azo dye; WASTE-WATER; UASB REACTOR; GRANULAR SLUDGE; COLOR REMOVAL; 2-PHASE; DEGRADATION; WASTEWATERS; BIOREACTORS; COSUBSTRATE; RIBOFLAVIN;

D O I：

10.1016/j.biortech.2012.06.099

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This work assessed the impact of the redox mediator sodium anthraquinone-2,6-disulphonate (AQDS) on the reductive decolourisation of the azo dye Reactive Red 2 (RR2) in one- and two-stage anaerobic systems (R-1 and R-2, respectively). The two-stage system achieved better colour removal efficiencies (52-62%) than the single-stage system (23-33%) in the absence of AQDS. Addition of AQDS accelerated the electrons transfer from the substrate (ethanol) to the dye, which increased the colour removal efficiency of both anaerobic systems (similar to 85%). Finally, the impact of acidogenic and methanogenic phases separation was masked by AQDS supplementation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1 / 7

页数：7

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