当前位置: X-MOL 学术Biotechnol. Adv. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
How can ethanol enhance direct interspecies electron transfer in anaerobic digestion?
Biotechnology Advances ( IF 16.0 ) Pub Date : 2021-08-06 , DOI: 10.1016/j.biotechadv.2021.107812
Dong Feng 1 , Xiaobo Guo 1 , Richen Lin 2 , Ao Xia 1 , Yun Huang 1 , Qiang Liao 1 , Xianqing Zhu 1 , Xun Zhu 1 , Jerry D Murphy 2
Affiliation  

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. DIET may replace mediated interspecies electron transfer (MIET) by efficient electron transfer between exoelectrogens and electrotrophic methanogens, thereby enhancing yields and rates of biogas production. Ethanol, as the initial electron donor in the discovery of the DIET pathway, is now a “hot topic” in the literature. Recent studies have indicated that ethanol in AD functions not only as the substrate, but also as the precursor to stimulate DIET by enriching exoelectrogens and electrotrophic methanogens for co-digesting complex organic wastes. This review aims to highlight the state of the art and recent advances in ethanol-based DIET in AD. The DIET associated reactions of ethanol oxidation and carbon dioxide reduction are assessed by thermodynamic analysis to reveal the extent of the potential for improvement of the AD processes that utilizes DIET pathways. Three ethanol-based DIET strategies are discussed: (1) ethanol as the sole substrate supplemented with conductive materials in AD, (2) ethanol co-digestion with complex substrates and (3) ethanol-type fermentation prior to AD. This review aims to chart the pathways for improved AD performance by utilizing ethanol-based DIET in specific treatments of biological wastes.



中文翻译:

乙醇如何增强厌氧消化中的直接种间电子转移?

有机废物厌氧消化 (AD) 生产沼气是一种成熟的生物技术,已经商业化了几十年。然而,相对较新的种间直接电子转移(DIET)的发现为提高沼气技术的效率带来了新的机会。DIET 可以通过外生电原和电养产甲烷菌之间的有效电子转移代替介导的种间电子转移(MIET),从而提高沼气产量和速率。乙醇作为发现 DIET 途径的初始电子供体,现在是文献中的“热门话题”。最近的研究表明,AD 中的乙醇不仅可以作为底物,还可以通过富集外生电原和电养产甲烷菌共同消化复杂的有机废物,作为刺激 DIET 的前体。本综述旨在强调 AD 中基于乙醇的 DIET 的最新进展和最新进展。通过热力学分析评估乙醇氧化和二氧化碳还原的 DIET 相关反应,以揭示利用 DIET 途径改进 AD 过程的潜力程度。讨论了三种基于乙醇的 DIET 策略:(1)乙醇作为唯一底物在 AD 中补充导电材料,(2)乙醇与复杂底物共同消化和(3)AD 之前的乙醇型发酵。本综述旨在通过在生物废物的特定处理中利用基于乙醇的 DIET 来绘制提高 AD 性能的途径。通过热力学分析评估乙醇氧化和二氧化碳还原的 DIET 相关反应,以揭示利用 DIET 途径改进 AD 过程的潜力程度。讨论了三种基于乙醇的 DIET 策略:(1)乙醇作为唯一底物在 AD 中补充导电材料,(2)乙醇与复杂底物共同消化和(3)AD 之前的乙醇型发酵。本综述旨在通过在生物废物的特定处理中利用基于乙醇的 DIET 来绘制提高 AD 性能的途径。通过热力学分析评估乙醇氧化和二氧化碳还原的 DIET 相关反应,以揭示利用 DIET 途径改进 AD 过程的潜力程度。讨论了三种基于乙醇的 DIET 策略:(1)乙醇作为唯一底物在 AD 中补充导电材料,(2)乙醇与复杂底物共同消化和(3)AD 之前的乙醇型发酵。本综述旨在通过在生物废物的特定处理中利用基于乙醇的 DIET 来绘制提高 AD 性能的途径。(2) 乙醇与复杂底物的共同消化和 (3) AD 之前的乙醇型发酵。本综述旨在通过在生物废物的特定处理中利用基于乙醇的 DIET 来绘制提高 AD 性能的途径。(2) 乙醇与复杂底物的共同消化和 (3) AD 之前的乙醇型发酵。本综述旨在通过在生物废物的特定处理中利用基于乙醇的 DIET 来绘制提高 AD 性能的途径。

更新日期:2021-08-15
down
wechat
bug