Dibenzofuran degradation by bacterial community in landfill leachate

Ahmad, Farah Najwa and Nordin, Noor Faizul Hadry and Abdullah Sani, Muhamad Shirwan and Wan Sulaiman, Wan Syibrah Hanisah (2023) Dibenzofuran degradation by bacterial community in landfill leachate. Pertanika Journal of Science & Technology, 31 (6). pp. 3125-3137. ISSN 0128-7680 E-ISSN 2231-8526

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Abstract

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 onefactor 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.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Bacterial community, Biodegradation, Dibenzofuran, Landfill leachate, One-Factor-at-a-Time (OFAT)
Subjects:	Q Science > Q Science (General) Q Science > QR Microbiology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART)
Depositing User:	Dr Noor Faizul Hadry Nordin
Date Deposited:	15 Feb 2024 13:03
Last Modified:	15 Feb 2024 13:05
URI:	http://irep.iium.edu.my/id/eprint/110864

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