Effects of Operating Parameters on Measurements of Biochemical Oxygen Demand Using a Mediatorless Microbial Fuel Cell Biosensor.
Effects of Operating Parameters on Measurements of Biochemical Oxygen Demand Using a Mediatorless Microbial Fuel Cell Biosensor.
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DOI：
10.3390/s16010035
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发表时间：
2015-12-28
期刊：
影响因子：
--
通讯作者：
Chung YC
中科院分区：
文献类型：
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作者：
Hsieh MC;Cheng CY;Liu MH;Chung YC
传统的生化需氧量（BOD）方法需要五天的时间来分析样品。微生物燃料电池（MFC）可能是快速测定水中BOD的替代工具。然而，MFC生物传感器用于连续测量水样的BOD仍然是不可用的。在这项研究中，一个MFC生物传感器接种已知的混合培养物被用来确定BOD浓度。评价了重要参数对建立BOD浓度与MFC输出信号之间的校准曲线的影响。结果表明，单糖是良好的燃料，蛋氨酸，苯丙氨酸和乙醇是不良燃料的MFC发电。进水中的离子没有显着影响MFC的性能。进水中的CN-可以缓解拮抗性电子受体对MFC性能的影响。BOD浓度与电流密度的回归方程为y = 0.0145x + 0.3317。采用该方法对实际水样中的BOD浓度进行了准确、连续的测量，测量误差在可接受的范围内。这些结果清楚地表明，开发的MFC生物传感器具有很大的潜力，作为一种替代的BOD传感装置，用于在线测量废水BOD。
The conventional Biochemical Oxygen Demand (BOD) method takes five days to analyze samples. A microbial fuel cell (MFC) may be an alternate tool for rapid BOD determination in water. However, a MFC biosensor for continuous BOD measurements of water samples is still unavailable. In this study, a MFC biosensor inoculated with known mixed cultures was used to determine the BOD concentration. Effects of important parameters on establishing a calibration curve between the BOD concentration and output signal from the MFC were evaluated. The results indicate monosaccharides were good fuel, and methionine, phenylalanine, and ethanol were poor fuels for electricity generation by the MFC. Ions in the influent did not significantly affect the MFC performance. CN− in the influent could alleviate the effect of antagonistic electron acceptors on the MFC performance. The regression equation for BOD concentration and current density of the biosensor was y = 0.0145x + 0.3317. It was adopted to measure accurately and continuously the BOD concentration in actual water samples at an acceptable error margin. These results clearly show the developed MFC biosensor has great potential as an alternative BOD sensing device for online measurements of wastewater BOD.