Efficient electricity generation from sewage sludge usingbiocathode microbial fuel cell

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

168 Scopus Citations
View graph of relations

Author(s)

  • Guodong Zhang
  • Qingliang Zhao
  • Yan Jiao
  • Kun Wang
  • Nanqi Ren

Detail(s)

Original languageEnglish
Pages (from-to)43-52
Journal / PublicationWater Research
Volume46
Issue number1
Publication statusPublished - 1 Jan 2012
Externally publishedYes

Abstract

Microbial fuel cells (MFCs) with abiotic cathodes require expensive catalyst (such as Pt) or catholyte (such as hexacynoferrate) to facilitate oxidation reactions. This study incorporated biocathodes into a three-chamber MFC to yield electricity from sewage sludge at maximum power output of 13.2±1.7W/m3 during polarization, much higher than those previously reported. After 15d operation, the total chemical oxygen demand (TCOD) removal and coulombic efficiency (CE) of cell reached 40.8±9.0% and 19.4±4.3%, respectively. The anolyte comprised principally acetate and propionate (minor) as metabolites. The use of biocathodes produced an internal resistance of 36-46Ω, lower than those reported in literature works, hence yielding higher maximum power density from MFC. The massively parallel sequencing technology, 454 pyrosequencing technique, was adopted to probe microbial community on anode biofilm, with dominant phyla belonging to Proteobacteria (45% of total bacteria), Bacteroidetes (19%), Uncultured bacteria (9%), Actinobacteria (7%), Firmicutes (7%), Chloroflex (7%). At genera level, Rhodoferax, Ferruginibacter, Propionibacterium, Rhodopseudomonas, Ferribacterium, Clostridium, Chlorobaculum, Rhodobacter, Bradyrhizobium were the abundant taxa (relative abundances>2.0%). © 2011 Elsevier Ltd.

Research Area(s)

  • 454 pyrosequencing technique, Biocathode, Electricity generation, Microbial community, Microbial fuel cells (MFCs), Sewage sludge

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Efficient electricity generation from sewage sludge usingbiocathode microbial fuel cell. / Zhang, Guodong; Zhao, Qingliang; Jiao, Yan et al.
In: Water Research, Vol. 46, No. 1, 01.01.2012, p. 43-52.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review