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Benefits of conductive additive for direct interspecies electron transfer in anaerobic digestion

Frontiers of Environmental Science & Engineering
Abstract Conductive additive such as biochar have been extensively employed to enhance anaerobic digestion (AD) performance for over a decade. Among the proposed mechanisms, conductive additive-facilitated direct interspecies electron transfer (DIET) is frequently cited as a key contributor to these performance improvements.
Guangcai Tan, Hanwen Yu
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Direct interspecies electron transfer mechanism in enhanced methanogenesis: A mini-review

Bioresource Technology, 2021
The role of direct interspecies electron transfer (DIET) on enhancement of methanogenesis has been studied. This mini-review updated the current researches on the potential role of DIET on enhanced performance for anaerobic digestion of organic substrates with effective strategies implemented.
Wei, Wang, Duu-Jong, Lee
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Challenges in engineering direct interspecies electron transfer for enhanced methanogenesis

Renewable and Sustainable Energy Reviews, 2023
Interspecies electron transfer (IET) between fatty acid-oxidizing bacteria and hydrogenotrophic methanogens is key to stable and efficient methanogenesis in the anaerobic digestion (AD) process. Recently discovered direct IET (DIET) enables energetically and kinetically advantageous methanogenesis and facilitating cell-to-cell electrical connections ...
Gahyun Baek, Danbee Kim, Yunjeong Choi, Junho Cha, Changsoo Lee   +4 more
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Anaerobic digestion via direct interspecies electron transfer: a comparative review of electron transfer mechanisms and conductive materials

Journal of Material Cycles and Waste Management
Holim Song, Xin Zhao, Hanxiang Chen, Jongkeun Lee   +3 more
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Hardwiring microbes via direct interspecies electron transfer: mechanisms and applications

Environmental Science: Processes & Impacts, 2016
Direct interspecies electron transfer (DIET) has important implications for the design and operation of biological treatment processes.
Qiwen, Cheng, Douglas F, Call
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How can ethanol enhance direct interspecies electron transfer in anaerobic digestion?

Biotechnology Advances, 2021
Anaerobic digestion (AD) of organic waste to produce biogas is a mature biotechnology commercialised for decades. However, the relatively recent discovery of direct interspecies electron transfer (DIET) brings a new opportunity to improve the efficiency of biogas technology.
Dong, Feng, Xiaobo, Guo, Richen, Lin, Ao, Xia, Yun, Huang, Qiang, Liao, Xianqing, Zhu, Xun, Zhu, Jerry D, Murphy   +8 more
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Different Routes for Direct Interspecies Electron Transfer with Diverse Electron-Accepting Partners

2022
AbstractDirect interspecies electron transfer (DIET) may be most important in methanogenic environments, but studies to date that have examined the mechanisms for electron transfer from electron-donating partners have primarily focused on co-cultures in which fumarate was the terminal electron acceptor.
Dawn E. Holmes, Jinjie Zhou, Jessica A. Smith, Caiqin Wang, Xinying Liu, Derek R. Lovley   +5 more
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Biochar-induced quorum sensing enhances methane production by strengthening direct interspecies electron transfer.

Bioresource Technology
Yu Li, Chenlong Fan, Lingsen Liu, Xuanyu Zhai, Bei Zang, Yu-You Li, Rong Chen   +6 more
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Ethanol-type anaerobic digestion enhanced methanogenic performance by stimulating direct interspecies electron transfer and interspecies hydrogen transfer.

Bioresource Technology
Ethanol pre-fermentation of food waste effectively alleviates acidification; however, its effects on interspecies electron transfer remain unknown. This study configured the feed according to COD ratios of ethanol: sodium acetate: sodium propionate: sodium butyrate of 5:2:1.5:1.5 (ethanol-type anaerobic digestion) and 0:5:2.5:2.5 (control), and ...
Shuang Zhang, Yuanyuan Ren, Pan Zhao, Xiaona Wang, Qun-chao Wang, Xiaohong Sun   +5 more
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Direct Interspecies Electron Transfer in Anaerobic Digestion: A Review

2015
Direct interspecies electrons transfer (DIET) is a syntrophic metabolism in which free electrons flow from one cell to another without being shuttled by reduced molecules such as molecular hydrogen or formate. As more and more microorganisms show a capacity for electron exchange, either to export or import them, it becomes obvious that DIET is a ...
Dubé, Charles-David, Guiot, Serge R.
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