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Comparative study on Cronobacter sakazakii and Pseudomonas otitidis isolated from septic tank wastewater in microbial fuel cell for bioelectricity generation

机译:生物电性发电微生物燃料电池静脉曲张Sakazakii和Pseudomonas oTitidis的比较研究

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摘要

The potential of microbial isolates from septic tank wastewater to generate bioelectricity in microbial fuel cell was investigated. The isolates were identified as Cronobacter sakazakii AATB3 and Pseudomonas otitidis AATB4. The sterilized septic tank wastewater alone was used as an organic matter to study the exact role of the isolates in bioelectricity production and biodegradation of septic tank wastewater. P. otitidis AATB4 achieved the highest bioenergy generation (i.e., power density of 280mW/m(2) and current density of 800 mA/m(2)), highest COD removal (i.e., 79.1%), and maximum coulombic efficiency of 15.5% at pH 7. The biofilm of P. otitidis AATB4 at the anodic surface contained 49 mu g/cm(2) of protein and 57 mu g/cm(2) of carbohydrate. Scanning electron microscope and confocal laser scanning microscope revealed 46 mu m biofilm thickness by P. otitidis AATB4 in the electrode for stable power generation. It is concluded that P. otitidis AATB4 can be used as a novel bioelectrogen in microbial fuel cell for sustainable energy production using septic tank wastewater.
机译:研究了来自化粪池废水的微生物分离物的潜力,以产生微生物燃料电池中的生物电性。分离株被鉴定为Cronobacter Sakazakii AATB3和假单胞菌otitidis AATB4。仅使用灭菌的化粪池废水作为有机物质,以研究分离物在生物电性生产中的确切作用和化粪池废水的生物降解。 P. otitidis AATB4实现了最高的生物能量生物生物能量(即280mW / m(2)的功率密度,电流密度为800 mA / m(2)),最高的COD去除(即79.1%),最大的库仑效率为15.5 PH 7的%。阳极表面的P. Otitidis AATB4的生物膜含有49μg/ cm(2)蛋白和57μg/ cm(2)碳水化合物。扫描电子显微镜和共聚焦激光扫描显微镜透露了46μm的P. Otitidis AATB4在电极中的46μm生物膜厚度,用于稳定发电。结论是,使用化粪池废水,P. otitidis AATB4可用作微生物燃料电池的新型生物电池。

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