Complementary functions within microbial fuel cells: Energy production and desalination

Haiping Luo, Pei Xu, Zhiyong Ren

Research output: Contribution to journalConference article

Abstract

Lacking of ions strength and the buffer capacity in real wastewater significantly limited the practical application of microbial fuel cells (MFCs). Here we show that energy recovery efficiency of domestic wastewater in the anode chamber could be improved in a microbial desalination cell (MDC) by integrating desalination function into an MFC reactor. In the MDC reactor, raw domestic wastewater or saline water containing 100 mM NaCl and 100 mM NaHCO 3 were used as the anode substrate and salt water in the middle chamber, respectively. Using wastewater as the only substrate, the maximum power density of the MDC was 7.55 W/m 3, which was significantly higher than the power output from MFC with 2.74 W/m 3. Chemical characteristics of the anolyte showed that the desalination process helped stabilize the wastewater pH and increased its conductivity by three times. Besides, comparison of microbial communities in the anode chamber between MDC and MFC is underway.

Original languageEnglish (US)
JournalACS National Meeting Book of Abstracts
StatePublished - Dec 1 2011
Externally publishedYes
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: Aug 28 2011Sep 1 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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