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铁驱动的异质生物电扇工艺,用于降解甲基

Rishabh Raj¹, S M Sathe², Sovik Das³

¹School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.

|August 29, 2023

概括

这项研究展示了一种新的生物电-芬顿系统,使用Ni-Fe催化剂有效地从水中去除甲基 (MP). 该系统提供了一种可持续和有效的降解新出现的污染物的方法,展示了污染物清除和能量收集的双重好处.

科学领域:

环境科学环境科学
环境化学环境化学
电化学电化学电化学

背景情况:

新出现的污染物如甲基 (MP) 对水生生态系统和人类健康构成风险.
传统的废水处理方法与耐火有机化合物作斗争.
生物电-芬顿 (BEF) 工艺为污染物降解提供了一个有希望的现场方法.

研究的目的:

为了研究异质Ni-Fe驱动的生物电源-芬顿微生物燃料电池 (BEF-MFC) 对甲基 (MP) 降解的有效性.
评估阴解质pH值和外部电压对MP去除效率和处理成本的影响.
评估Ni-Fe催化剂在污染物降解和发电中的双重功能.

主要方法:

一个异质的Ni-Fe驱动的BEF-MFC系统被用于MP降解.
实验是在中性和酸性阴解质pH (pH 7.0和3.0) 进行的,有或没有外部电压 (0.5V).
测量了MP去除效率,催化剂液,总有机碳减少和功率密度.

主要成果:

在中性pH (10 mg/L初始度) 的情况下,在240分钟内实现了超过99.5%的MP去除.
将pH值降低到3.0并应用外部电压将处理时间减少到120分钟,但增加了催化剂水和成本.
该BEF-MFC系统获得了205.90mW/cm2的最大功率密度,并将实际废水中的TOC降低了56.5%.

结论:

以Ni-Fe驱动的BEF-MFC系统对于从各种水矩阵中去除甲基是非常有效的.
优化pH值和外部电压等条件可以提高降解率,尽管必须考虑催化剂漏和成本.
铁催化剂表现出双重好处,同时作为芬顿催化剂和阴极,突出其可扩展的废水处理潜力.

关键词:

生物电气 - 芬顿新出现的污染物污染物异质催化剂是一种异质的催化剂.甲基帕拉本的使用方法微生物燃料电池是一种微生物燃料电池.污水处理污水处理污水处理

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