期刊
BIOELECTROCHEMISTRY
卷 123, 期 -, 页码 19-25出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.bioelechem.2018.03.010
关键词
MFC; Stack; Voltage reversal; Ceramic; Urine
资金
- Bill & Melinda Gates Foundation [OPP1094890]
- EPSRC [EP/L002132/1]
- EPSRC [EP/L002132/1] Funding Source: UKRI
Two ceramic stacks, terracotta (t-stack) and mullite (m-stack), were developed to produce energy when fed with neat undiluted urine. Each stack consisted of twelve identical microbial fuel cells (MFCs) which were arranged in cascades and tested under different electrical configurations. Despite voltage reversal, the m-stack produced a maximum power of 800 mu W whereas the t-stack produced a maximum of 520 mu W after 62.6 h of operation. Moreover, during the operation, both systems were subject to blockage possibly due to struvite. To the Authors' best knowledge, this is the first time that such a phenomenon in ceramic MFC membranes is shown to be the direct result of sub-optimal performance, which confirms the hypothesis that ceramic membranes can continue operating long-term, if the MFCs produce maximum power (high rate of e(-) transfer). Furthermore, it is shown that once the ceramic membrane is blocked, it may prove difficult to recover in-situ. (C) 2018 The Authors. Published by Elsevier B.V.
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