Minimizing losses in bio-electrochemical systems: the road to applications

被引:329
作者
Clauwaert, Peter [1 ]
Aelterman, Peter [1 ]
Pham, The Hai [1 ]
De Schamphelaire, Liesje [1 ]
Carballa, Marta [1 ]
Rabaey, Korneel [2 ]
Verstraete, Willy [1 ]
机构
[1] Univ Ghent, LabMET, B-9000 Ghent, Belgium
[2] Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia
关键词
biofuel cell; bioenergy; biocatalyzed electrolysis; overpotentials; biocatalysts; ohmic resistance;
D O I
10.1007/s00253-008-1522-2
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
Bio-electrochemical systems (BESs) enable microbial catalysis of electrochemical reactions. Plain electrical power production combined with wastewater treatment by microbial fuel cells (MFCs) has been the primary application purpose for BESs. However, large-scale power production and a high chemical oxygen demand conversion rates must be achieved at a benchmark cost to make MFCs economical competitive in this context. Recently, a number of valuable oxidation or reduction reactions demonstrating the versatility of BESs have been described. Indeed, BESs can produce hydrogen, bring about denitrification, or reductive dehalogenation. Moreover, BESs also appear to be promising in the field of online biosensors. To effectively apply BESs in practice, both biological and electrochemical losses need to be further minimized. At present, the costs of reactor materials have to be decreased, and the volumetric biocatalyst activity in the systems has to be increased substantially. Furthermore, both the ohmic cell resistance and the pH gradients need to be minimized. In this review, these losses and constraints are discussed from an electrochemical viewpoint. Finally, an overview of potential applications and innovative research lines is given for BESs.
引用
收藏
页码:901 / 913
页数:13
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