Skip to main content

Research Repository

Advanced Search

Multi-functional microbial fuel cells for power, treatment and electro-osmotic purification of urine

Gajda, Iwona; Greenman, John; Santoro, Carlo; Serov, Alexey; Atanassov, Plamen; Melhuish, Chris; Ieropoulos, Ioannis

Authors

Iwona Serruys Iwona.Gajda@uwe.ac.uk
Senior Lecturer in Engineering Management

John Greenman

Carlo Santoro

Alexey Serov

Plamen Atanassov

Chris Melhuish



Abstract

© 2018 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. BACKGROUND: In this work, a small-scale ceramic microbial fuel cell (MFC) with a novel type of metal–carbon-derived electrocatalyst containing iron and nicarbazin (Fe-NCB) was developed, to enhance electricity generation from neat human urine. Substrate oxidation at the anode provides energy for the separation of ions and recovery from urine without any chemical or external power additions. RESULTS: The catalyst was shown to be effective in clear electrolyte synthesis of high pH, compared with a range of carbon-based metal-free materials. Polarisation curves of tested MFCs showed up to 53% improvement (44.8 W m−3) in performance with the use of Fe-NCB catalyst. Catholyte production rate and pH directly increased with power performance while the conductivity decreased showing visually clear extracted liquid in the best-performing MFCs. CONCLUSIONS: Iron based catalyst Fe-NCB was shown to be a suitable electrocatalyst for the air-breathing cathode, improving power production from urine-fed MFCs. The results suggest electrochemical treatment through electro-osmotic drag while the electricity is produced and not consumed. Electro-osmotic production of clear catholyte is shown to extract water from urine against osmotic pressure. Recovering valuable resources from urine would help to transform energy intensive treatments to resource production, and will create opportunities for new technology development. © 2018 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Citation

Gajda, I., Greenman, J., Santoro, C., Serov, A., Atanassov, P., Melhuish, C., & Ieropoulos, I. (2019). Multi-functional microbial fuel cells for power, treatment and electro-osmotic purification of urine. Journal of Chemical Technology and Biotechnology, 94(7), 2098-2106. https://doi.org/10.1002/jctb.5792

Journal Article Type Article
Acceptance Date Jun 30, 2018
Online Publication Date Aug 6, 2018
Publication Date Jul 1, 2019
Journal Journal of Chemical Technology and Biotechnology
Print ISSN 0268-2575
Electronic ISSN 1097-4660
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 94
Issue 7
Pages 2098-2106
DOI https://doi.org/10.1002/jctb.5792
Keywords Microbial Fuel Cell, urine, terracotta membrane, electro-osmosis, Fe-NCB catalyst, miniaturisation
Public URL https://uwe-repository.worktribe.com/output/863830
Publisher URL https://doi.org/10.1002/jctb.5792

Files







You might also like



Downloadable Citations