School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai, 201209, China.
School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai, 201209, China.
Chemosphere. 2023 Dec;345:140431. doi: 10.1016/j.chemosphere.2023.140431. Epub 2023 Oct 16.
Bioelectrochemical techniques are quick, efficient, and sustainable alternatives for treating heavy metal soils. The use of carbon nanomaterials in combination with electroactive microorganisms can create a conductive network that mediates long-distance electron transfer in an electrode system, thereby resolving the issue of low electron transfer efficiency in soil remediation. As a multifunctional soil heavy metal remediation technology, its application in organic remediation has matured, and numerous studies have demonstrated its potential for soil heavy metal remediation. This is a ground-breaking method for remediating soils polluted with high concentrations of heavy metals using soil microbial electrochemistry. This review summarizes the use of bioelectrochemical systems with modified anode materials for the remediation of soils with high heavy metal concentrations by discussing the mass-transfer mechanism of electrochemically active microorganisms in bioelectrochemical systems, focusing on the suitability of carbon nanomaterials and acidophilic bacteria. Finally, we discuss the emerging limitations of bioelectrochemical systems, and future research efforts to improve their performance and facilitate practical applications. The mass-transfer mechanism of electrochemically active microorganisms in bioelectrochemical systems emphasizes the suitability of carbon nanomaterials and acidophilic bacteria for remediating soils polluted with high concentrations of heavy metals. We conclude by discussing present and future research initiatives for bioelectrochemical systems to enhance their performance and facilitate practical applications. As a result, this study can close any gaps in the development of bioelectrochemical systems and guide their practical application in remediating heavy-metal-contaminated soils.
生物电化学技术是处理重金属土壤的快速、高效和可持续的替代方法。将碳纳米材料与电活性微生物结合使用，可以在电极系统中创建一个导电网络，从而介导长距离电子转移，解决土壤修复中电子转移效率低的问题。作为一种多功能的土壤重金属修复技术，其在有机修复中的应用已经成熟，许多研究表明其具有土壤重金属修复的潜力。这是一种利用土壤微生物电化学修复高浓度重金属污染土壤的突破性方法。本综述通过讨论生物电化学系统中电化学活性微生物的传质机制，重点讨论了碳纳米材料和嗜酸菌的适宜性，总结了采用改性阳极材料的生物电化学系统用于修复高浓度重金属土壤的应用。最后，我们讨论了生物电化学系统的新兴局限性以及未来提高其性能和促进实际应用的研究工作。生物电化学系统中电化学活性微生物的传质机制强调了碳纳米材料和嗜酸菌在修复高浓度重金属污染土壤方面的适宜性。我们通过讨论生物电化学系统的当前和未来研究计划来结束本文，以提高其性能并促进其在修复重金属污染土壤方面的实际应用。因此，本研究可以弥补生物电化学系统发展中的空白，并指导其在修复重金属污染土壤方面的实际应用。
