Department of Biotechnology, Hindustan Institute of Technology and Science, Chennai, Tamil Nadu, India.
Department of Medical Biotechnology and Integrative Physiology, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Saveetha University, Thandalam, Chennai, Tamil Nadu, India.
Curr Microbiol. 2024 Jul 29;81(9):284. doi: 10.1007/s00284-024-03789-4.
Chromium metal is a potential toxin released by various industries as by products. Reduction of the same costs an ample amount of manpower and wealth. Alternate, economical, efficient, and sustainable form of chromium reduction while generating electricity is a boon that microbial fuel cell (MFC) has provided to man. It paves way for an attractive technique to process hazardous elements. Nature as well as the type of electrode modulates the efficiency of reduction and power production. Many previously published studies have reviewed chromium removal from effluents as well as through MFCs, but utilization of nanoparticle-based MFC for chromium removal has not been exclusively done before. Hence, the objective of the current review is to provide exclusive study on nanoparticle-assisted MFC for chromium reduction. Reputed published data from the past 5 years have been studied meticulously to compare the best outcomes of MFC in chromium removal. Chromium is found to be removed mostly in double-chambered MFC with a maximum removal of 100% when iron is used as an electrode. Removal of the same has led to generation of maximum power of 1965.4 mW m when palladium nanoparticles are used at the electrode. Removal rates of Cr(VI) from a mixture of NiCo2O4, MoS2, and graphite felt in a dual-chamber MFC showed an 8.13% increase after 24 h of light exposure. Another efficient setup used MoS2 nanosheets and Alpha-FeOOH nanoparticles in a dual-chamber MFC to completely remove Cr(VI) and achieve a high removal ratio of 91.45%. The current study reviews the recent updates in chromium reduction through MFC and its significance in future as a potential instrument for bioremediation and energy source.
铬金属是各种工业作为副产品释放的潜在毒素。还原同样的物质需要大量的人力和财富。而微生物燃料电池 (MFC) 为人类提供了一种经济、高效、可持续的铬还原形式，同时还能发电，这是一种福音。它为处理危险元素开辟了一条有吸引力的技术途径。无论是自然还是电极类型，都会调节还原和发电的效率。许多以前发表的研究都综述了从废水中以及通过 MFC 去除铬，但以前没有专门研究基于纳米颗粒的 MFC 对铬的去除。因此，本综述的目的是专门研究纳米颗粒辅助 MFC 对铬的还原。仔细研究了过去 5 年来的权威出版数据，以比较 MFC 在铬去除方面的最佳效果。研究发现，在双室 MFC 中，当铁用作电极时，铬主要被去除，最大去除率为 100%。当钯纳米颗粒用作电极时，最大去除率为 1965.4 mW m，同时产生最大功率。在双室 MFC 中，NiCo2O4、MoS2 和石墨毡混合物中的 Cr(VI)的去除率在 24 小时的光照暴露后增加了 8.13%。另一个高效的设置在双室 MFC 中使用 MoS2 纳米片和 Alpha-FeOOH 纳米颗粒，完全去除 Cr(VI)，并实现了 91.45%的高去除率。本研究综述了通过 MFC 还原铬的最新进展及其作为生物修复和能源潜在仪器的未来意义。
