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首页> 外文期刊>Journal of Environmental Science and Technology >Effect of Concentrations of Bacterial Consortia in Culture Medium from Wastewater in Microbial Fuel Cells
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Effect of Concentrations of Bacterial Consortia in Culture Medium from Wastewater in Microbial Fuel Cells

机译：微生物燃料电池废水中细菌菌落浓度的影响

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Background and Objective: Microbial fuel cells (MFCs) are technology by which electricity is generated from microbes. Electricity can be generated by MFCs by using wastewater as a substrate. Bacterial consortia from wastewater have been widely used in MFCs. Bacteria degrade substrates, resulting in a difference in potential, which in turn generates electricity. This research aimed to analyze the potential of bacterial consortia and identify the best number of additional bacterial consortia cultured in nutrient broth containing tempeh wastewater as the primary glucose source. Materials and Methods: In this study, used wastewater from tempeh production with different concentrations of bacterial consortia in culture medium (0, 0.4, 1 and 10%). Voltage was recorded with a digital multimeter instrument for 50 h. Bacterial growth was assessed every 3 h at 486 nm with a spectrophotometer UV-Vis. The COD of tempeh wastewater was analyzed before and after the experiment with COD kits and heating it on a COD Digester Block for 2 h at 150°C. Statistical analysis method used in this study is monothetic analysis or one-factor-at-a-time method. Results: The study indicates that the nutrients present in tempeh wastewater can be used as an effective energy source for MFCs using bacterial consortia as a biocatalyst. Conclusion: The optimum voltage and power density generated was up to 291.1 mV and 66.33 mW m?2 following 1% culture medium and its coulombic efficiency reached 4.48%. In addition to generating electricity, MFCs can remove chemical oxygen demand (COD). The highest COD removal valuereaches 42.97% when 10% of culture was used.
机译：背景与目的：微生物燃料电池（MFCs）是一种通过微生物发电的技术。 MFC可通过使用废水作为基质来发电。废水中的细菌聚生体已广泛用于MFC中。细菌降解底物，导致电位差，进而产生电流。这项研究旨在分析细菌财团的潜力，并确定在含有豆eh废水作为主要葡萄糖源的营养肉汤中培养的其他细菌财团的最佳数量。材料和方法：在这项研究中，使用了来自豆eh生产的废水，其培养基中的细菌菌落浓度不同（0％，0.4％，1％和10％）。用数字万用表仪器记录电压50小时。用分光光度计UV-Vis每3小时在486nm处评估细菌的生长。在使用COD套件进行实验之前和之后，对豆eh废水的COD进行分析，并在COD消化池中于150°C加热2小时。本研究中使用的统计分析方法是单等分析或一次一因素分析法。结果：研究表明，豆bacterial废水中存在的营养物可以作为细菌财团作为生物催化剂的MFC的有效能源。结论：在1％培养基中产生的最佳电压和功率密度分别为291.1 mV和66.33 mW m ？2 ，库仑效率达到4.48％。除了发电以外，MFC还可以消除化学需氧量（COD）。当使用10％的培养物时，最高的COD去除值达到42.97％。

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