Electricity Generation from Rice Bran by a Microbial Fuel Cell and the Influence of Hydrodynamic Cavitation Pretreatment

Yuta Yoshimura, Kazunori Nakashima, Masaji Kato, Kengo Inoue, Fumiyoshi Okazaki, Hitoshi Soyama, Satoru Kawasaki

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Single-chamber microbial fuel cells (MFCs) were constructed using rice bran (carbon source) and pond bottom mud (microbial source). The total electric charge obtained in the MFC combining rice bran with pond bottom mud was four times higher than that in MFC using only rice bran. Phylogenetic analyses revealed dominant growth of fermentative bacteria such as Bacteroides and Clostridium species, and exoelectrogenic Geobacter species in the anode biofilms, suggesting that mutualism of these bacteria is a key factor for effective electricity generation in the MFC. Furthermore, rice bran, consisting of persistent polysaccharide, was pretreated by the hydrodynamic cavitation system to improve the digestibility and enhance the efficiency in MFC, resulting in 26% increase in the total production of electricity.

Original languageEnglish
Pages (from-to)15267-15271
Number of pages5
JournalACS Omega
Volume3
Issue number11
DOIs
Publication statusPublished - 2018 Nov 12

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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