Department of Mechanical Engineering, Anna University, Chennai, 600 025, India.
Department of Mechanical Engineering, Anna University, Chennai, 600 025, India.
Chemosphere. 2020 Dec;260:127593. doi: 10.1016/j.chemosphere.2020.127593. Epub 2020 Jul 10.
In this study we demonstrate Sulphonated Polyhedral oligomeric silsesquioxane (S-POSS) incorporated Sulphonated Poly Ether Ether Ketone (SPEEK) as an effective cation exchange membrane (CEM) for improving performance and sustainability in a fabricated tubular Microbial Fuel Cell (MFC). The organic-inorganic caged frame of S-POSS enables several ion conducting channels thereby resulting in better proton conductivity and water uptake in addition to hydroxide ions native in POSS. Among the membranes, SPEEK+ 5 wt% S-POSS exhibits a highest maximum performance of 162 ± 1.4 mW m with the highest IEC of 1.8 ± 0.05 meq g. Microbial community analysis reveals the predominance of several bacterial strains contributing to wide range of mechanisms. Three phyla including Betaproteobacteria, Gammaproteobacteria and Firmicutes showed maximum predominance. In addition to a novel nanocomposite membrane, the present research introduces perceptions of two metabolic mechanisms of the microbial community available which opens pathway for future insights on how other miniatures involve in electron transfer mechanisms.
在这项研究中，我们展示了磺化聚倍半硅氧烷（S-POSS）掺入磺化聚醚醚酮（SPEEK）作为一种有效的阳离子交换膜（CEM），以提高管状微生物燃料电池（MFC）的性能和可持续性。S-POSS 的有机-无机笼状结构能够形成几个离子传导通道，从而在具有 POSS 固有氢氧根离子的基础上，提高质子电导率和吸水性。在这些膜中，SPEEK+5wt%S-POSS 表现出最高的最大功率 162±1.4mW·m，最高 IEC 为 1.8±0.05meq g。微生物群落分析表明，有几种细菌菌株占主导地位，这些菌株具有广泛的作用机制。包括β变形菌门、γ变形菌门和厚壁菌门在内的三个门表现出最大的优势。除了一种新型纳米复合膜外，本研究还介绍了微生物群落中两种代谢机制的认识，这为未来研究其他微生物如何参与电子转移机制提供了途径。
