MOF-based materials facilitate efficient anaerobic digestion of organic wastes:integrating substrate bioavailability and microbial syntrophism  

作　　者：Haoyu Liu Ying Xu Xiang Chen Xiankai Wang Hang Wang Xiaohu Dai 

机构地区：[1]State Key Laboratory of Pollution Control and Resource Reuse,School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China [3]YANGTZE Eco-Environment Engineering Research Center,China Three Gorges Corporation,Wuhan 430010,China [4]National Engineering Research Center of Eco-Environment Protection for Yangtze River Economic Belt,Wuhan 430010,China

出　　处：《Frontiers of Environmental Science & Engineering》2024年第8期153-157,共5页环境科学与工程前沿（英文）

基　　金：financially supported by the National Key Research and Development Project(No.2020YFC1908702);the China Three Gorges Corporation(No.202403018);the National Natural Science Foundation of China(Nos.51978498 and 52131002).

摘　　要：Anaerobic digestion(AD)of organic waste(OW)for methane production is generally inefficient.Supplementation of AD systems with traditional materials(e.g.,electroconductive materials)is a current focus of research and has been reported to assist methanogenesis by enhancing the productivity of microbial metabolism among syntrophic anaerobes.Unlike in the AD of organic wastewater,in which microbial cells come into direct contact with the dissolved substrate,in the complex multiphase AD system of OW,low substrate bioavailability is an inevitable obstacle to microbial syntrophism for methanogenesis.Accordingly,we propose that improving substrate bioavailability and microbial syntrophism is a powerful strategy for ensuring material-assisted efficient AD of OW.Based on the above considerations,metal-organic frameworks(MOFs),with their exceptionally high porosity,outstanding multi-functionality,and tuneable structures,have excellent potential for application in multiphase anaerobic systems of OW to integrate substrate bioavailability and microbial syntrophism and drive efficient AD.In addition,MOFs with designable and tuneable natures have great potential for use in identifying suitable materials for anaerobic systems for different types of OW via machine-learning technologies,thereby effectively enhancing methanogenesis from OW.However,the sustainable application of MOFs in AD and the corresponding environmental risks warrant further investigation.

关 键 词：Anaerobic digestion Methane production BIODEGRADABILITY Functional materials Metal-organic frameworks 

分 类 号：X79[环境科学与工程—环境工程]