State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
College of Resources and Environment Science, Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi 830046, China.
Sci Total Environ. 2020 Nov 20;744:140652. doi: 10.1016/j.scitotenv.2020.140652. Epub 2020 Jul 6.
Due to their wide-distribution, high-biocompatibility and low-cost, nature-derived quinone redox mediators (NDQRM) have shown great potential in bioremediation through mediating electron transfers between microorganisms and between microorganisms and contaminants in anaerobic biotransformation processes. It is obvious that their performance in bioremediation was limited by the availability of quinone-based groups in NDQRM. A sustainable solution is to enhance the electron transfer capacity and retention capacity by the modification of NDQRM. Therefore, this review comprehensively summarized the modification techniques of NDQRM according to their multiple roles in anaerobic biotransformation systems. In addition, their potential applications in greenhouse gas mitigation, contaminant degradation in anaerobic digestion, contaminant bioelectrochemical remediation and energy recovery were discussed. And the problems that need to be addressed in the future were pointed out. The obtained knowledge would promote the exploration of novel NDQRM, and provide suggestions for the design of anaerobic consortia in biotransformation systems.
由于其广泛的分布、高生物相容性和低成本，天然醌氧化还原介体（NDQRM）在通过介导微生物之间以及微生物和污染物之间的电子转移来进行生物修复方面显示出巨大的潜力，特别是在厌氧生物转化过程中。显然，它们在生物修复中的性能受到 NDQRM 中基于醌的基团的可用性的限制。一个可持续的解决方案是通过修饰 NDQRM 来增强电子转移能力和保留能力。因此，本综述根据 NDQRM 在厌氧生物转化系统中的多种作用，全面总结了 NDQRM 的修饰技术。此外，还讨论了它们在温室气体减排、厌氧消化中污染物降解、污染物生物电化学修复和能量回收方面的潜在应用。并指出了未来需要解决的问题。所获得的知识将促进对新型 NDQRM 的探索，并为生物转化系统中厌氧生物群的设计提供建议。
