Simultaneous nitrification, denitrification and carbon removal in microbial fuel cells

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

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Author(s)

  • Bernardino Virdis
  • Korneel Rabaey
  • René A. Rozendal
  • Zhiguo Yuan
  • Jürg Keller

Detail(s)

Original languageEnglish
Pages (from-to)2970-2980
Journal / PublicationWater Research
Volume44
Issue number9
Publication statusPublished - May 2010
Externally publishedYes

Abstract

Microbial fuel cells (MFCs) can use nitrate as a cathodic electron acceptor, allowing for simultaneous removal of carbon (at the anode) and nitrogen (at the cathode). In this study, we supplemented the cathodic process with in situ nitrification through specific aeration, and thus obtained simultaneous nitrification and denitrification (SND) in the one half-cell. Synthetic wastewater containing acetate and ammonium was supplied to the anode; the effluent was subsequently directed to the cathode. The influence of oxygen levels and carbon/nitrogen concentrations and ratios on the system performances was investigated. Denitrification occurred simultaneously with nitrification at the cathode, producing an effluent with levels of nitrate and ammonium as low as 1.0 ± 0.5 mg N L-1 and 2.13 ± 0.05 mg N L-1, respectively, resulting in a nitrogen removal efficiency of 94.1 ± 0.9%. The integration of the nitrification process into the cathode solves the drawback of ammonium losses due to diffusion between compartments in the MFC, as previously reported in a system operating with external nitrification stage. This work represents the first successful attempt to combine SND and organics oxidation while producing electricity in an MFC. © 2010 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Bioelectrochemical systems, COD to N ratio, Denitrification, Loop configuration, Microbial fuel cell, Nitrification

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)

Simultaneous nitrification, denitrification and carbon removal in microbial fuel cells. / Virdis, Bernardino; Rabaey, Korneel; Rozendal, René A. et al.
In: Water Research, Vol. 44, No. 9, 05.2010, p. 2970-2980.

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