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非缓冲微生物燃料电池运行性能及无机碳积累

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陈金丽, 吕莹, 王悦, 李秀芬, 王新华. 非缓冲微生物燃料电池运行性能及无机碳积累[J]. 环境工程学报, 2019, 13(6): 1435-1440. doi: 10.12030/j.cjee.201811101
引用本文: 陈金丽, 吕莹, 王悦, 李秀芬, 王新华. 非缓冲微生物燃料电池运行性能及无机碳积累[J]. 环境工程学报, 2019, 13(6): 1435-1440. doi: 10.12030/j.cjee.201811101
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CHEN Jinli, LYU Ying, WANG Yue, LI Xiufen, WANG Xinhua. Operation performance and inorganic carbon accumulation of buffer-less microbial fuel cell[J]. Chinese Journal of Environmental Engineering, 2019, 13(6): 1435-1440. doi: 10.12030/j.cjee.201811101
Citation: CHEN Jinli, LYU Ying, WANG Yue, LI Xiufen, WANG Xinhua. Operation performance and inorganic carbon accumulation of buffer-less microbial fuel cell[J]. Chinese Journal of Environmental Engineering, 2019, 13(6): 1435-1440. doi: 10.12030/j.cjee.201811101
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非缓冲微生物燃料电池运行性能及无机碳积累

  • 1.

    江南大学环境与土木工程学院，江苏省厌氧生物技术重点实验室，江苏省水处理技术与材料协同创新中心，无锡 214122

  • 基金项目:

    江苏省自然科学基金面上项目BK20171141江苏省自然科学基金面上项目(BK20171141)

Operation performance and inorganic carbon accumulation of buffer-less microbial fuel cell

  • 1.

    Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China

  • Fund Project:

  • 摘要: 考察了不同乙酸钠浓度下非缓冲微生物燃料电池(BLMFC)的运行性能和无机碳(IC)(HCO3-或H2CO3)积累情况。结果表明：阳极液中IC的积累浓度与乙酸钠浓度呈线性相关，在乙酸钠浓度为0.5 g·L-1和1.0 g·L-1的BLMFC体系中，IC积累浓度分别为8.02 mmol·L-1和13.60 mmol·L-1，阳极液出现酸化现象，pH降低至6.2和6.5；体系输出电压(U)与阳极液pH出现相同的先下降后上升的变化趋势，体系最大功率密度(Pmax)分别为242 mW·m-2和428 mW·m-2。当乙酸钠浓度增大到2.0 g·L-1和3.0 g·L-1时，IC积累浓度增加到30.64 mmol·L-1和42.42 mmol·L-1；乙酸盐自身的缓冲作用和体系积累的较高浓度IC可以将阳极液pH维持在7.4~8.5，输出电压稳定在350 mV左右；Pmax增大到668 mW·m-2和699 mW·m-2，可以实现自缓冲稳定运行。
    Abstract: The operation performance and inorganic carbon (IC) (HCO3- or H2CO3) accumulation of buffer-less microbial fuel cells (BLMFC) with different sodium acetate concentrations were investigated in this paper. Based on the experiment results, the IC concentration of the anolyte was linearly related to the sodium acetate concentration. The IC accumulated concentrations in BLMFC systems with 0.5 g·L-1 and 1.0 g·L-1 of sodium acetate were 8.02 mmol·L-1 and 13.60 mmol·L-1, respectively. The anolyte acidification appeared, and the corresponding anolyte pH decreased to 6.2 and 6.5, respectively. Similarly, the output voltage (U) of the corresponding BLMFCs exhibited a rapid decrease followed by gradual ascending, and the maximum power densities (Pmax) were 242 mW·m-2 and 428 mW·m-2, respectively. As sodium acetate concentration increased to 2.0 g·L-1 and 3.0 g·L-1, IC concentrations increased to 30.64 mmol·L-1 and 42.42 mmol·L-1 accordingly. The buffering effect of sodium acetate and the accumulated IC in the anolyte with high concentration sodium acetate could maintain the stable anolyte pH range within 7.4~8.5 and the stable voltages of aboue 350 mV. The Pmax significantly increased up to 668 mW·m-2 and 699 mW·m-2 for these two BLMFC systems, respectively, and their self-buffering operation was realized.
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  • 刊出日期:  2019-06-18

非缓冲微生物燃料电池运行性能及无机碳积累

  • 1. 江南大学环境与土木工程学院，江苏省厌氧生物技术重点实验室，江苏省水处理技术与材料协同创新中心，无锡 214122
基金项目:

江苏省自然科学基金面上项目BK20171141江苏省自然科学基金面上项目(BK20171141)

摘要: 考察了不同乙酸钠浓度下非缓冲微生物燃料电池(BLMFC)的运行性能和无机碳(IC)(HCO3-或H2CO3)积累情况。结果表明：阳极液中IC的积累浓度与乙酸钠浓度呈线性相关，在乙酸钠浓度为0.5 g·L-1和1.0 g·L-1的BLMFC体系中，IC积累浓度分别为8.02 mmol·L-1和13.60 mmol·L-1，阳极液出现酸化现象，pH降低至6.2和6.5；体系输出电压(U)与阳极液pH出现相同的先下降后上升的变化趋势，体系最大功率密度(Pmax)分别为242 mW·m-2和428 mW·m-2。当乙酸钠浓度增大到2.0 g·L-1和3.0 g·L-1时，IC积累浓度增加到30.64 mmol·L-1和42.42 mmol·L-1；乙酸盐自身的缓冲作用和体系积累的较高浓度IC可以将阳极液pH维持在7.4~8.5，输出电压稳定在350 mV左右；Pmax增大到668 mW·m-2和699 mW·m-2，可以实现自缓冲稳定运行。

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