Analysis of synergistic effects of process factors on energy distribution in MFCs

CHENG Ben'ai; JIA Hui; YANG Guang; LIU Wenbin; ZHANG Hongwei; WANG Jie

doi:10.11949/j.issn.0438-1157.20171073

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Analysis of synergistic effects of process factors on energy distribution in MFCs

更新时间：2025-12-10

- Analysis of synergistic effects of process factors on energy distribution in MFCs
- CIESC Journal Issue 5, Pages: 2242-2249(2018)
- 作者机构：
  
  1. 天津工业大学分离膜与膜过程省部共建国家重点实验室,天津,300387
  2. 天津工业大学环境与化学工程学院,天津,300387
  3. 天津大学环境科学与工程学院,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171073
  CLC： 703.1
- Online First：05 May 2018，
  
  Published：05 May 2018
- 稿件说明：
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CHENG Ben'ai, JIA Hui, YANG Guang, et al. Analysis of synergistic effects of process factors on energy distribution in MFCs[J]. CIESC Journal, 2018, (5): 2242-2249.
DOI：

CHENG Ben'ai, JIA Hui, YANG Guang, et al. Analysis of synergistic effects of process factors on energy distribution in MFCs[J]. CIESC Journal, 2018, (5): 2242-2249. DOI： 10.11949/j.issn.0438-1157.20171073.

摘要

微生物燃料电池（MFC）以产电和代谢的方式利用系统能量实现有机物降解。针对运行过程中能量的不同分配需求，以pH、有机负荷、溶解氧、电导率和外电阻为工艺因子，采用正交实验方法优选最佳工艺条件，从而实现MFC能量流调控的目的。研究表明：在实验工况下，最高产电能量转化效率和生物代谢能量利用效率分别为8.74%和66.03%，负荷和外电阻对产电能量转化效率有显著影响，负荷和pH对能量利用效率有显著影响，系统能量主要以生物代谢方式被利用。由此可见，在同等负荷条件下，若将MFC作为电转化单元时应主要控制其外电阻，若需提高MFC的有机物降解能力时pH则是首要控制因素。

Abstract

Microbial fuel cell (MFC) is a novel energy conversion device which is able to convert chemical energy into electrical energy. In MFCs

organic matter was degraded in ways of microbial metabolism and bioelectricity conversion. According to the different allocation requirements of energy in the process of operation

the energy flow could be controlled by changing the operation parameters. In this study

MFCs factors

such as pH

organic load

dissolved oxygen

electrical conductance and external resistance

were applied by orthogonal design experiments to optimize parameters for regulation of energy flow. The results showed that the highest efficiency of electric energy conversion was 8.74% and the loads and resistances were significant factors. On the other hand

the highest efficiency of biological metabolism was 66.03% and the load and pH were significant factors. Therefore

when the system was under the same load condition

if the MFC were used as an electrical conversion units

the external resistances should be controlled

while if organic matter conversion capacity was required to be improved

the pH should be controlled.

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