Metal-organic framework carbide enhances interspecies electron transfer to produce methane

ZHANG Haihua; DONG Haiquan; LI Hui; YUAN Luyun; FANG Zhe; CHENG Jun

doi:10.11949/0438-1157.20200650

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Metal-organic framework carbide enhances interspecies electron transfer to produce methane

Energy and environmental engineering | 更新时间：2026-07-24

- Metal-organic framework carbide enhances interspecies electron transfer to produce methane
- CIESC Journal Vol. 71, Issue 12, Pages: 5745-5754(2020)
- 作者机构：
  
  1.杭州环境集团有限公司，浙江杭州 310022
  2.浙江大学国家清洁能源利用重点实验室，浙江杭州 310027
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200650
  CLC： TK 6
- Received：25 May 2020，
  
  Revised：2020-07-03，
  
  Online First：17 December 2020，
  
  Published：05 December 2020
- 稿件说明：
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张海华, 董海泉, 李慧, 袁璐韫, 方哲, 程军. 碳化金属-有机骨架强化种间电子传递产甲烷[J]. 化工学报, 2020, 71(12): 5745-5753

ZHANG Haihua, DONG Haiquan, LI Hui, YUAN Luyun, FANG Zhe, CHENG Jun. Metal-organic framework carbide enhances interspecies electron transfer to produce methane[J]. CIESC Journal, 2020, 71(12): 5745-5753
张海华, 董海泉, 李慧, 袁璐韫, 方哲, 程军. 碳化金属-有机骨架强化种间电子传递产甲烷[J]. 化工学报, 2020, 71(12): 5745-5753 DOI： 10.11949/0438-1157.20200650.

ZHANG Haihua, DONG Haiquan, LI Hui, YUAN Luyun, FANG Zhe, CHENG Jun. Metal-organic framework carbide enhances interspecies electron transfer to produce methane[J]. CIESC Journal, 2020, 71(12): 5745-5753 DOI： 10.11949/0438-1157.20200650.

摘要

为了解决厌氧发酵系统中氢分压限制种间氢扩散速率问题，利用金属-有机骨架ZIF-8衍生多孔碳材料促进乙醇厌氧发酵生产甲烷，探究其对微生物种间电子传递的增强机理。扫描电镜SEM表明ZIF-8衍生多孔碳起到菌群固定化作用，并且能促进纳米导线产生。实验结果表明，随着ZIF-8衍生多孔碳添加量的增加，甲烷产量和最大产甲烷速率逐渐提高。添加200 mg/L ZIF-8衍生多孔碳时，系统导电性提高了3.58倍，三维荧光光谱分析表明ZIF-8衍生多孔碳能够促进微生物胞外聚合物（EPS）中类富里酸的相对含量由18.0%提高到23.6%，对应的甲烷产量和最大产甲烷速率分别增加了18.81%和19.04%。

Abstract

To solve the problem that the hydrogen partial pressure in the anaerobic fermentation system limits the hydrogen diffusion rate among species

porous metal materials derived from the metal-organic framework ZIF-8 are used to promote the anaerobic fermentation of ethanol to produce methane

and the mechanism for enhancing the electron transfer between microorganism species is explored. Scanning electron microscopy (SEM) shows that ZIF-8 derived porous carbon plays immobilized role of microbial communities and promotes nanowires generation. The results show that the methane yield and the maximum methane production rate increase with an increase of ZIF-8 derived porous carbon addition. When 200 mg/L ZIF-8 derived porous carbon is added

the system conductivity increases by 3.58-fold. Moreover

three-dimensional fluorescence spectroscopy analysis (3D-EEM) showed that ZIF-8 derived porous carbon promotes the relative content of fulvic acid in extracellular polymeric substance (EPS) from 18.0% to 23.6%

corresponding to methane yield and maximum methane production rate increasing by 18.81% and 19.04% respectively.

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