期刊
ENVIRONMENTAL TECHNOLOGY & INNOVATION
卷 25, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.eti.2021.102168
关键词
Microbial fuel cell; Proton exchange membrane; SPEEK; Goethite nanoparticles
Hydrophilic nanoparticles of goethite and its derivatives were used to prepare proton exchange membranes (PEMs) for microbial fuel cells (MFCs). The performance of the fabricated PEMs was significantly improved in terms of power density, current density, coulombic efficiency, and COD removal compared to the bare membrane. The best result was obtained with a SPEEK nanocomposite membrane containing 0.5% wt goethite.
In this work, hydrophilic nanoparticles of goethite and its derivatives with functional groups of tannic acid and sulfanilic acid were prepared. The synthesized nanocomposites were embedded into sulfonated poly ether ether ketone (SPEEK) as base polymer of proton exchange membrane (PEM) for improvement of microbial fuel cell (MFC) performance. The SEM images, FTIR and AFM tests and contact angle measurements verified hydrophilic properties of the fabricated membranes. Proton exchangeability of the fabricated PEMs was examined in a two-chamber MFC under the same operating conditions (initial COD and biomass concentration of 3300 and 1500 mg/l, respectively). The MFC performance was assessed in terms of COD removal, coulombic efficiency, power density and current density. The best result was obtained from SPEEK nanocomposite membrane with goethite 0.5% wt. The proposed PEM showed significant improvement in terms of the maximum power density (73.7 mW/m(2)) and current density (293 mA/m(2)) compared to the bare membrane. A relatively high coulombic efficiency of 52.6% with COD removal of 97.6% was achieved. (C) 2021 The Authors. Published by Elsevier B.V.
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