Co‐Substrate and Phosphate Buffer Enhanced Atrazine Degradation and Electricity Generation in a Bioelectrochemical System

IF 2.6 4区工程技术 Q3 ELECTROCHEMISTRY

Fuel Cells Pub Date : 2024-06-26 DOI:10.1002/fuce.202400053

Hui Wang, Ying Du, XiangHua Wang, Lei Li, Yu Li, Zhiqiang Xu, Xianning Li

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引用次数: 0

Abstract

Refractory organic pollutant removal can be enhanced by a bioelectrochemical system via the addition of electron donors/acceptors. In this study, a single‐chamber soil microbial fuel cell (MFC) was constructed, and electricity production and atrazine removal efficiency were assessed using different co‐substrates and phosphate buffer concentrations. The co‐substrates compensated for the lack of soil organic matter and provided a sufficient carbon source for microorganisms to facilitate MFC electricity generation and efficient atrazine removal. The maximum voltage (94 mV), power density (39.41 mW m−2), removal efficiency (85.30%), and degradation rate (1.68 mg kg−1 d−1) were highest in the soil MFCs with sodium acetate when compared with the other groups. Phosphate buffer significantly alleviated the dramatic soil pH change. The electricity generation and atrazine removal efficiency increased with the buffer concentration (0–0.10 g L−1). The maximum voltage (144 mV) and power density (89.35 mW m−2) were highest, total internal resistance (652 Ω) was lowest, and atrazine removal efficiency (90.95%) and degradation rate (1.54 mg kg−1 d−1) were determined in the soil MFCs with the phosphate buffer concentration of 0.10 g L−1, and. These results indicate that the co‐substrate and phosphate buffer can enhance the electricity generation of soil MFCs and atrazine removal.

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共底物和磷酸盐缓冲液增强了生物电化学系统中的阿特拉津降解和发电功能

生物电化学系统可以通过添加电子供体/受体来提高难降解有机污染物的去除率。本研究构建了单室土壤微生物燃料电池（MFC），并使用不同的辅助基质和磷酸盐缓冲液浓度对发电量和阿特拉津去除效率进行了评估。辅助基质弥补了土壤有机物的不足，为微生物提供了充足的碳源，从而促进了 MFC 发电和高效去除阿特拉津。与其他组相比，含有醋酸钠的土壤 MFC 的最大电压（94 mV）、功率密度（39.41 mW m-2）、去除率（85.30%）和降解率（1.68 mg kg-1 d-1）最高。磷酸盐缓冲液明显缓解了土壤 pH 值的剧烈变化。发电量和阿特拉津去除效率随缓冲液浓度（0-0.10 g L-1）的增加而增加。在磷酸盐缓冲液浓度为 0.10 g L-1 的土壤 MFC 中，最大电压（144 mV）和功率密度（89.35 mW m-2）最高，总内阻（652 Ω）最低，阿特拉津去除率（90.95%）和降解率（1.54 mg kg-1 d-1）最高。这些结果表明，共底物和磷酸盐缓冲液可以提高土壤 MFCs 的发电量和阿特拉津的去除率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fuel Cells 工程技术-电化学

CiteScore

5.80

自引率

3.60%

发文量

审稿时长

3.7 months

期刊介绍： This journal is only available online from 2011 onwards. Fuel Cells — From Fundamentals to Systems publishes on all aspects of fuel cells, ranging from their molecular basis to their applications in systems such as power plants, road vehicles and power sources in portables. Fuel Cells is a platform for scientific exchange in a diverse interdisciplinary field. All related work in -chemistry- materials science- physics- chemical engineering- electrical engineering- mechanical engineering- is included. Fuel Cells—From Fundamentals to Systems has an International Editorial Board and Editorial Advisory Board, with each Editor being a renowned expert representing a key discipline in the field from either a distinguished academic institution or one of the globally leading companies. Fuel Cells—From Fundamentals to Systems is designed to meet the needs of scientists and engineers who are actively working in the field. Until now, information on materials, stack technology and system approaches has been dispersed over a number of traditional scientific journals dedicated to classical disciplines such as electrochemistry, materials science or power technology. Fuel Cells—From Fundamentals to Systems concentrates on the publication of peer-reviewed original research papers and reviews.