Focusing on the process diagnosis of anaerobic fermentation by a novel sensor system combining microbial fuel cell, gas flow meter and pH meter

Zhidan Liu, Jing Liu, Baoming Li, Yuanhui Zhang, Xin Hui Xing

Research output: Contribution to journalArticlepeer-review

Abstract

Process diagnosis is essential to ensure anaerobic fermentation stable and efficient. Here, a novel sensor system combining microbial fuel cell (MFC), gas flow meter and pH meter was developed to evaluate its feasibility for probing the anaerobic process established on a model high-rate bioreactor. Repeated transient responses of electrical signal, proton concentration, and gas flow rate, were observed subject to external disturbances. The transient response lasted from <1 h to 6 h. In addition, MFC obtained compatible signal variations with other sensors, and biofilm MFC (MFCBiofilm) resulted in better agreements than control MFC (MFCControl). These results revealed that 1) the composite sensor system was capable to probe anaerobic process, suggesting a novel approach for process analysis and diagnosis of biogas or biohydrogen production; 2) the variations of sensor signals might provide more valuable information for process diagnosis than sensor signals themselves.

Original languageEnglish (US)
Pages (from-to)13658-13664
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number25
DOIs
StatePublished - Aug 22 2014

Keywords

  • Anaerobic fermentation
  • Gas biofuels
  • Microbial fuel cell
  • Sensor signal variations

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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