Investigation of ceramic MFC stacks for urine energy extraction.
Investigation of ceramic MFC stacks for urine energy extraction.
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DOI：
10.1016/j.bioelechem.2018.03.010
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发表时间：
2018-10
期刊：
影响因子：
--
通讯作者：
Ieropoulos I
中科院分区：
文献类型：
--
作者：
Tremouli A;Greenman J;Ieropoulos I
两种陶瓷堆，陶瓷堆(t堆)和莫来石堆(m堆)被开发出来，当喂食干净的未稀释的尿液时产生能量。每个堆由12个相同的微生物燃料电池(MFC)组成，它们以级联的形式排列，并在不同的电气配置下进行测试。尽管电压反转，m-电堆产生的最大功率为800 μW，而t-电堆在62.6 μh的操作后产生的最大功率为520 W。此外，在行动中，两个系统都可能因鸟粪石而堵塞。据作者所知，这是陶瓷MFC膜的这种现象首次被证明是次优性能的直接结果，这证实了这样的假设，即如果MFC产生最大功率(高e−转移率)，陶瓷膜可以继续长期运行。此外，研究还表明，一旦陶瓷膜被堵塞，可能很难原位恢复。莫来石陶瓷的表现优于陶俑。性能上的缺陷使相连电池的极性颠倒。由于次最佳电荷转移速率导致陶瓷膜堵塞，这些陶瓷中的堵塞在原位是不可逆的。
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 μW whereas the t-stack produced a maximum of 520 μW 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. Mullite ceramic outperformed terracotta. Deficiency in performance reversed polarity for connected cells. Ceramic membranes blocked due to suboptimal charge transfer rates Blockage in these ceramics was irreversible in situ.
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