垃圾渗滤液中细菌群落降解二苯并呋喃的研究

IF 0.6 Q3 MULTIDISCIPLINARY SCIENCES Pertanika Journal of Science and Technology Pub Date : 2023-10-12 DOI:10.47836/pjst.31.6.27
Farah Najwa Ahmad, Noor Faizul Hadry Nordin, Muhamad Shirwan Abdullah Sani, Wan Syibrah Hanisah Wan Sulaiman
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引用次数: 0

摘要

环境污染已成为一个全球性的问题,生物修复被认为是一种有希望利用细菌群落能力清理污染场所的选择。垃圾填埋场渗滤液中的本地细菌群落被认为携带降解污染物的酶,如二恶英同系物二苯并呋喃。环境因素对生物降解过程的影响是已知的,优化后的条件可以加速生物降解过程。因此,本研究旨在优化垃圾渗滤液中原生细菌群落降解二苯并呋喃的基质利用率、温度和pH因子。本研究采用单因素一次法(OFAT)测量二苯并呋喃的降解。富集双苯并呋喃(15 ~ 45mg L-1)的垃圾渗滤液在温度(30℃~ 42℃)、pH(5 ~ 9)条件下孵育24小时后提取分析。从研究的第一部分开始,15 mg L-1的二苯并呋喃、30°C的温度和pH 7对二苯并呋喃的降解效果最好。在30℃、pH 7条件下,投加15 ppm的二苯并呋喃24小时,二苯并呋喃去除率达到74.40%。本研究提出了对二苯并呋喃降解效果较好的优化条件,可提高生物修复效果。
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Dibenzofuran Degradation by Bacterial Community in Landfill Leachate
The contamination of the environment has been a global issue, and bioremediation is proposed as an option to clean up the contamination sites with the promising utilization of bacterial community capabilities. The indigenous bacterial community in the landfill leachate is recognized to carry enzymes for the degradation of contaminants such as dioxin congeners, the dibenzofuran. Environmental factors have been known to influence the process to achieve successful biodegradation, and the optimized conditions may speed up the biodegradation process. Thus, this study was conducted to optimize the substrate availability, temperature, and pH factor for the degradation of dibenzofuran from landfill leachate by the native bacterial community in landfill leachate. This study uses the one-factor at-time (OFAT) approach to measure dibenzofuran degradation. The landfill leachate with enrichment of dibenzofuran (15 to 45 mg L-1) was incubated at temperatures (30°C to 42°C) and pH (5 to 9) for 24 hours before being extracted and analyzed. From the first part of the study, 15 mg L-1 of dibenzofuran, 30°C temperature, and pH 7 have shown the highest dibenzofuran degradation. Later, the optimum condition of dibenzofuran removal (74.40%) was achieved when the landfill leachate was spiked with 15 ppm dibenzofuran at 30°C and pH 7 for 24 hours. This study proposes optimized conditions that give a better result for dibenzofuran degradation, which may enhance bioremediation.
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来源期刊
Pertanika Journal of Science and Technology
Pertanika Journal of Science and Technology MULTIDISCIPLINARY SCIENCES-
CiteScore
1.50
自引率
16.70%
发文量
178
期刊介绍: Pertanika Journal of Science and Technology aims to provide a forum for high quality research related to science and engineering research. Areas relevant to the scope of the journal include: bioinformatics, bioscience, biotechnology and bio-molecular sciences, chemistry, computer science, ecology, engineering, engineering design, environmental control and management, mathematics and statistics, medicine and health sciences, nanotechnology, physics, safety and emergency management, and related fields of study.
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