Improving the performances of Nafion™-based membranes for microbial fuel cells with silica-based, organically-functionalized mesostructured fillers

被引:43
作者
Angioni, Simone
Millia, Luca
Bruni, Gianna
Tealdi, Cristina
Mustarelli, Piercarlo
Quartarone, Eliana [1 ]
机构
[1] Univ Pavia, Dept Chem, Via Taramelli 16, I-27100 Pavia, Italy
关键词
Microbial fuel cells; MFC; Nafion; Composite membranes; PEMs; Wastewater treatment; PROTON-EXCHANGE MEMBRANE; WASTE-WATER TREATMENT; NANOCOMPOSITE MEMBRANE; TECHNOLOGY; BIOENERGY;
D O I
10.1016/j.jpowsour.2016.10.014
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Microbial Fuel Cells (MFCs) can be conveniently used for wastewater treatment and bioelectricity production. Their efficiency is strongly influenced by the physico-chemical properties of the ion-conducting membrane. In this work we prepare Nafion (TM)-based composite membranes by using mesoscale SBA-15 silica, and organic-inorganic fillers obtained by functionalizing SBA-15 with SO3H groups. The proposed membranes are tested as alternative separators in MFCs for applications in wastewater treatment and their performances compared to those of standard Naflon (TM) 117. Prolonged (3 months) MFC operation shows that the composite membrane with 5 wt% of SBA-15 functionalized with 10 mol% of SO3H gives maximum power density of 380 mW m(-3), namely three times better than that of Naflon (TM) after 90 days of operation. The same membrane offers a very effective COD removal after 14 days (more than 95%), an impressive coulombic efficiency of 34%, and very high resistance to biofouling. We conclude that the use of silica-based SO3H functionalized fillers is a powerful strategy to improve the performances of Nafion (TM) membranes in MFCs. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:120 / 127
页数:8
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