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使用微生物燃料电池进行协同无氧咖啡因降解和生物电力生产

Vinayak Thengumthottathil¹, Gunaseelan Gopal², Santhosh Annamalai²

¹Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, India.

Environmental technology

|March 6, 2025

概括

微生物燃料电池 (MFC) 提供了一种可持续的方法来消除咖啡因污染. 这项研究表明,厌氧细菌可以有效地降解咖啡因,甚至将其用作源,同时产生电力.

科学领域:

环境科学环境科学
环境工程环境工程
微生物学微生物学

背景情况:

咖啡因是水生生态系统中的持续污染物,对野生动物和人类健康构成风险.
咖啡因的常规无氧处理通常是低效和缓慢的.
微生物燃料电池 (MFC) 是一种有前途的技术,可以同时处理废水和发电.

研究的目的:

使用微生物燃料电池 (MFCs) 调查咖啡因的无氧降解.
评估运行参数,包括碳源和的可用性,对咖啡因去除效率和发电的影响.
探索使用咖啡因作为MFC中无氧细菌的源的潜力.

主要方法:

使用合成废水,酸盐 (碳源) 和无氧污泥 (微生物注射剂) 建造了一个两室的MFC.
实验中使用不同度的乙酸盐 (0.375和1克/升) 和咖啡因 (10和20毫克/升) 进行了实验.
评估了外部源 (化) 对咖啡因降解和功率输出的影响.

主要成果:

在没有外部源的情况下,咖啡因在3天内完全降解 (100%),这表明细菌利用咖啡因作为源.
使用外部源,100%的咖啡因降解需要5天.
最大功率密度从5.64到12.8mW/m2不等,随着咖啡因和酸盐度的增加而增加.

结论:

在MFC中的厌氧细菌可以有效地降解咖啡因,利用它作为源,同时产生电力.
操作参数显著影响咖啡因降解率和MFC中的发电效率.
多种咖啡因复合剂代表了咖啡因污染废水处理和生物能源回收的可持续和高效方法.

关键词:

咖啡因咖啡因是一种咖啡因.无氧处理无氧处理生物降解生物降解废水处理是废水处理的方法之一.

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