Stimulating anaerobic digestion to degrade recalcitrant organic pollutants: Potential role of conductive materials-led direct interspecies electron transfer

• Published in: Journal of environmental management 2023-10, Vol.344, p.118337-118337, Article 118337
• Main Authors: Wu, Linjun, Shen, Zhiqiang, Zhou, Yuexi, Zuo, Jiane
• Format: Article
• Language: English
• Subjects: Anaerobic digestion; chemical treatment; Conductive material; Direct interspecies electron transfer; electron transfer; energy recovery; metabolism; oxidation; pollutants; Recalcitrant organic pollutants; Syntrophic metabolism; waste treatment
• ISSN: 0301-4797; 1095-8630
• DOI: 10.1016/j.jenvman.2023.118337

This review aims to provide a comprehensive understanding of the potential of CMs-dominated DIET in the degradation of recalcitrant organic pollutants in AD. The review covers the mechanisms and efficiencies of recalcitrant organic pollutant degradation by CMs-dominated DIET, the comparison of degradation pathways between DIET and chemical treatment, recent insights on DIET-enhanced degradation, and the evaluation of the potential and future development of CMs-dominated DIET. The review emphasizes the importance of coupled syntrophic microorganisms, electron flux, and physicochemical properties of CMs in enhancing the degradation performance of AD. Additionally, it highlights the advantages of DIET-led syntrophic metabolism over traditional oxidation technologies in terms of environmental friendliness and efficiency. Finally, the review acknowledges the potential risks associated with introducing CMs into AD systems and provides guidance for waste treatment and energy recovery. [Display omitted] •CMs-led DIET is an effective method for recalcitrant organic pollutants degradation.•CMs-led DIET is disputable in terms of pollutant degradation mechanisms.•This review highlights the win-win situation of waste treatment and energy recovery.•This review offers a comprehensive analysis of the potential trajectory of DIET.