电化学生物滤池提高了减少挥发性有机化合物的性能。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Environmental Technology Pub Date : 2025-03-01 Epub Date: 2024-07-11 DOI:10.1080/09593330.2024.2375009
Marvin Yeung, Guangchun Wang, Bairen Yang, Jinying Xi
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引用次数: 0

摘要

为了通过电流提高挥发性有机化合物(VOCs)的去除率,我们开发了一种电化学生物滤池(EBF)。在 50 mA 的最佳电流强度下,甲苯的去除率(RE)显著提高了 15%,而生物量增长率则相应下降了 46%。同时,在去除正己烷、苯乙烯、二氯甲烷和二异丁烯时,EBF 系统的功效明显提高。结果表明,在电流的影响下,RE 增加了 11% 至 49%,生物量增长率降低了 0% 至 64%。电流刺激抑制了微生物的积累,从而减轻了生物膜的堵塞。革兰氏阳性菌门(包括真菌门和放线菌门)的相对丰度分别增加了 15%和 23%,而变形菌门中的传统优势菌属,如 Rhodococcus 和 Dokdonella,则出现了下降。此外,渗滤液中存在过氧化氢、游离氯和过氧化物,这表明 EBF 系统中的氧化反应有所增加。这项研究为电流刺激提供了一种有吸引力的途径,以提高挥发性有机化合物的降解能力并减轻生物膜的堵塞。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrochemical biofilter enhances performance of volatile organic compounds abatement.

An electrochemical biofilter (EBF) was developed for enhancing the removal of volatile organic compounds (VOCs) through current. The removal efficiency (RE) of toluene exhibited a notable increase of 15% while the biomass growth rate exhibited a corresponding decline of 46% under an optimal current intensity of 50 mA. Meanwhile, the efficacy of the EBF system was markedly enhanced upon the removal of n-hexane, styrene, dichloromethane, and diisobutylene. The results indicated that there was an 11% to 49% increase in RE and a 0% to 64% reduction in biomass growth rates under the influence of the current. The current stimulation inhibited the accumulation of microorganisms, thereby alleviating biofilm clogging. The relative abundance of gram-positive phyla, including Firmicutes and Actinobacteria, increased by 15% and 23%, respectively, while the traditionally dominant genera within the Proteobacteria phylum, such as Rhodococcus and Dokdonella, exhibited a decline. In addition, the presence of hydrogen peroxide, free chlorine, and superoxides in the leachate indicated that the oxidative reaction increased in EBF system. This study provides an attractive pathway for current stimulation to enhance degradation of VOCs and alleviate biofilm clogging.

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来源期刊
Environmental Technology
Environmental Technology 环境科学-环境科学
CiteScore
6.50
自引率
3.60%
发文量
0
审稿时长
4 months
期刊介绍: Environmental Technology is a leading journal for the rapid publication of science and technology papers on a wide range of topics in applied environmental studies, from environmental engineering to environmental biotechnology, the circular economy, municipal and industrial wastewater management, drinking-water treatment, air- and water-pollution control, solid-waste management, industrial hygiene and associated technologies. Environmental Technology is intended to provide rapid publication of new developments in environmental technology. The journal has an international readership with a broad scientific base. Contributions will be accepted from scientists and engineers in industry, government and universities. Accepted manuscripts are generally published within four months. Please note that Environmental Technology does not publish any review papers unless for a specified special issue which is decided by the Editor. Please do submit your review papers to our sister journal Environmental Technology Reviews at http://www.tandfonline.com/toc/tetr20/current
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