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Comparing the short and long term stability of biodegradable, ceramic and cation exchange membranes in microbial fuel cells

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Nov 2013 United Kingdom Publisher:Elsevier BVJournal:Bioresource Technology, volume 148, pages 480-486 (issn: 0960-8524,

Authors: Winfield, Jonathan; Chambers, Lily D.; Rossiter, Jonathan; Ieropoulos, Ioannis;

doi: 10.1016/j.biortech.2013.08.163

pmid: 24077158

handle: 1983/f765fd4f-6f88-49d0-8b29-9b92de0f676c

Comparing the short and long term stability of biodegradable, ceramic and cation exchange membranes in microbial fuel cells

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Abstract

The long and short-term stability of two porous dependent ion exchange materials; starch-based compostable bags (BioBag) and ceramic, were compared to commercially available cation exchange membrane (CEM) in microbial fuel cells. Using bi-directional polarisation methods, CEM exhibited power overshoot during the forward sweep followed by significant power decline over the reverse sweep (38%). The porous membranes displayed no power overshoot with comparably smaller drops in power during the reverse sweep (ceramic 8%, BioBag 5.5%). The total internal resistance at maximum power increased by 64% for CEM compared to 4% (ceramic) and 6% (BioBag). Under fixed external resistive loads, CEM exhibited steeper pH reductions than the porous membranes. Despite its limited lifetime, the BioBag proved an efficient material for a stable microbial environment until failing after 8 months, due to natural degradation. These findings highlight porous separators as ideal candidates for advancing MFC technology in terms of cost and operation stability.

Country

United Kingdom

Related Organizations

University of Southampton
United Kingdom
University of the West of England
United Kingdom
University of Bristol
United Kingdom
University of the West of England
United Kingdom

Keywords

570, Ceramics, Microbial fuel cell, Time Factors, 660, Bioelectric Energy Sources, Membranes, Artificial, Hydrogen-Ion Concentration, 620, Biodegradation, Environmental, Electric Impedance, name=Tactile Action Perception, Cation Exchange Resins, /dk/atira/pure/core/keywords/tactile_action_perception, Tactile Action Perception, Microbial fuel cell;

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