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首页> 外文期刊>Energy Conversion & Management >Assessment of bioelectricity production in microbial fuel cells through series and parallel connections
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Assessment of bioelectricity production in microbial fuel cells through series and parallel connections

机译：通过串联和并联连接评估微生物燃料电池的生物电生产

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Microbial fuel cell (MFC) units which are connected in series and parallel, may increase MFC performance in forms of voltage and current respectively. In this research three individual MFC units were connected with different concentrations (10, 20 and 30 g l~(-1)) of glucose, fructose and sucrose. Generated power and current were analyzed through polarization and voltage curves. Parallel connections of three units, which fed with 10 g l~(-1) of each substrate, resulted in voltage and power densities of 0.65 V and 72.77 mWm~(-2), respectively. This configuration produced current density of 191.36 mAm~(-2) which was approximately three times higher than a single unit. By similar configuration but in series, produced voltage was increased to 1.78 V, as long as power and current densities were about at the same level of one single unit (52.35 mWm~(-2)and 57.6 mA m~(-2)). Substrate concentration enhancement to 20 and 30 g l~(-1) resulted in the same magnitude of increase for cell performances compared to the single unit results. Serial connection of 20 g l~(-1) of three substrates (glucose, fructose and sucrose) showed the highest results compared to other understudied substrate concentrations; 109.45 mW m~(-2) of power density, 98.14 mA m~(-2) of current density and 2.042 V as voltage. Shift of MFC configuration to parallel connection demonstrated 381.44 mA m~(-2), 128.72 mWm~(-2) and 0.68 V as current, power densities and voltage respectively. This configuration corresDonds to the lowest calculated internal resistance.
机译：串联和并联连接的微生物燃料电池（MFC）单元可以分别以电压和电流形式提高MFC性能。在这项研究中，三个单独的MFC单元分别连接了不同浓度（10、20和30 g l〜（-1））的葡萄糖，果糖和蔗糖。通过极化和电压曲线分析了产生的功率和电流。三个单元的并联连接，每个单元馈入10 g l〜（-1），电压和功率密度分别为0.65 V和72.77 mWm〜（-2）。这种配置产生的电流密度为191.36 mAm〜（-2），大约是单个单元的三倍。通过类似的配置，但串联后，只要功率和电流密度与单个单元（52.35 mWm〜（-2）和57.6 mA m〜（-2））大致处于相同水平，所产生的电压就会增加到1.78V。 。与单单位结果相比，底物浓度提高到20和30 g l〜（-1）导致电池性能的增加幅度相同。与其他未研究的底物浓度相比，20 g l〜（-1）的三种底物（葡萄糖，果糖和蔗糖）的串联显示出最高的结果。功率密度为109.45 mW m〜（-2），电流密度为98.14 mA m〜（-2），电压为2.042 V. MFC配置转换为并联时，电流，功率密度和电压分别为381.44 mA m〜（-2），128.72 mWm〜（-2）和0.68V。此配置对应于最低的计算内部电阻。

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