用碳纳米材料改性阳极，提高 P-SMFC 降解菲的效率

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2025-02-21 DOI:10.1016/j.envpol.2025.125874

Ruiyao Wang , Boyue Liu , Hongying Yuan , Jie Li , Yiyang Chi , Hongyan Zhai , Yongzhi Chi , Yinghao Huang , Haobo Yu , Tengfei Yuan , Min Ji

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引用次数: 0

摘要

在植物沉积物微生物燃料电池（p - smfc）中，阳极是生化反应的主要场所。在本研究中，使用不同的碳纳米材料(石墨烯（GNs）、碳纳米管（CNT）、羟基化碳纳米管（CNT- oh）和羧化碳纳米管（CNT- cooh）对p - smfc的阳极进行修饰，以探索其对菲（Phe）降解的增强作用。运行131天后，经cnt - cooh修饰的p - smfc （P-CNT-COOH）在稳定运行阶段表现出更短的启动时间和更高的电压。P-CNT-COOH在固定相位的电压比控制装置高约250 mV。P-CNT- cooh的电压和Phe去除率高于CNT- cooh （SMFC中没有植物），其Phe去除率达到67.5%，是P-CNT的1.25倍，而CNT （SMFC中没有植物）的性能高于P-CNT。经P-CNT-COOH修饰的阳极由于亲水性较高，富含小分子挥发性脂肪酸（VFAs）（如乙酸）和降解细菌（如硫杆菌和脱硫杆菌）。Phe的去除率与脱氢酶活性（DHAA）呈正相关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Enhancing the efficiency of P-SMFCs in degrading phenanthrene by modifying the anode with carbon nanomaterials

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Enhancing the efficiency of P-SMFCs in degrading phenanthrene by modifying the anode with carbon nanomaterials

In plant-sediment microbial fuel cells (P-SMFCs), the anode serves as the primary site for biochemical reactions. In this study, different carbon nanomaterials (graphenes (GNs), carbon nanotubes (CNT), hydroxylated-carbon nanotubes (CNT-OH), and carboxylated-carbon nanotubes (CNT-COOH)) were used to modify the anode of the P-SMFCs to explore the enhancement of phenanthrene (Phe) degradation. The devices were operated for 131 days, CNT-COOH-modified P-SMFCs (P-CNT-COOH) exhibited a shorter start-up period and higher voltage during the stable operation stage. The voltage of P-CNT-COOH during the stationary phase was approximately 250 mV higher than that of the control device. The voltage and Phe removal of P-CNT-COOH were higher than those of CNT-COOH (without plants in the SMFC), which achieved 67.5% Phe removal, which was 1.25 times higher than the P-CNT, whereas CNT (without plants in the SMFC) showed higher performance than P-CNT. The anode modified with P-CNT-COOH became enriched with small-molecule volatile fatty acids (VFAs) (e.g., acetic acid) and degrading bacteria (e.g., Thiobacillus and Desulfobulbus) attributed to the higher hydrophilicity. The removal of Phe was positively correlated with dehydrogenase activity (DHAA).

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.