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Nanocomposite membrane and microbial community analysis for improved performance in microbial fuel cell
Enzyme and Microbial Technology ( IF 3.4 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.enzmictec.2020.109606
Vaidhegi Kugarajah 1 , Moogambigai Sugumar 1 , Sangeetha Dharmalingam 1
Affiliation  

To improve the performance of a microbial fuel cell (MFC), four variations of sulphonated silicon dioxide (S-SiO2) was incorporated into sulphonated poly ether ether ketone (SPEEK) membranes. S-SiO2 was characterized by scanning electron microscopy (SEM), fourier transform infra-red spectroscopy (FTIR) and X-ray diffraction (XRD) to confirm morphological, physical and chemical characteristics. The prepared membranes were incorporated into a fabricated tubular MFC of 300 mL holding capacity. Membrane characterizations such as water uptake, ion exchange capacity (IEC) and proton conductivity were determined. The highest maximum output of 154 ± 1.5 mW m-2 is produced by SPEEK +7.5 wt% S-SiO2 with an IEC of 1.82 ± 0.08 meq g-1 and an oxygen mass transfer coefficient of 1.42 × 10-6 cm s-1. Microbial community studies show the prevalence of novel microbial strains with the predominance of 3 distinct phyla, namely Betaproteobacteria, Gammaproteobacteria and Firmicutes. The results suggest that the prepared nanocomposite membrane proves to be an efficient and sustainable alternative for improving the performance of a MFC without abating the essential membrane characteristics.

中文翻译:

用于提高微生物燃料电池性能的纳米复合膜和微生物群落分析

为了提高微生物燃料电池 (MFC) 的性能,将四种不同的磺化二氧化硅 (S-SiO2) 结合到磺化聚醚醚酮 (SPEEK) 膜中。通过扫描电子显微镜 (SEM)、傅里叶变换红外光谱 (FTIR) 和 X 射线衍射 (XRD) 对 S-SiO2 进行表征,以确认其形态、物理和化学特性。将制备的膜结合到制造的 300 mL 保持容量的管状 MFC 中。确定了诸如吸水量、离子交换容量 (IEC) 和质子电导率等膜特性。最高最大输出 154 ± 1.5 mW m-2 由 SPEEK +7.5 wt% S-SiO2 产生,IEC 为 1.82 ± 0.08 meq g-1,氧传质系数为 1.42 × 10-6 cm s-1 . 微生物群落研究表明,以 3 种不同门为主的新型微生物菌株普遍存在,即 Betaproteobacteria、Gammaproteobacteria 和 Firmicutes。结果表明,制备的纳米复合膜被证明是一种有效且可持续的替代方案,可在不减弱膜的基本特性的情况下提高 MFC 的性能。
更新日期:2020-10-01
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