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Article

Characterization of 1,4-Dioxane Biodegradation by a Microbial Community

1
Department of Civil &Environmental Engineering, Hanyang University, 222 Seongdong-gu, Seoul 04763, Korea
2
Department of Materials Engineering, Kyonggi University, Suwon, Gyeonggi-do 16227, Korea
*
Author to whom correspondence should be addressed.
Water 2020, 12(12), 3372; https://doi.org/10.3390/w12123372
Received: 27 October 2020 / Revised: 25 November 2020 / Accepted: 26 November 2020 / Published: 1 December 2020
(This article belongs to the Special Issue Removal of Emerging Contaminants from Waters Using Nanotechnology)
In this study, a microbial community of bacteria was investigated for 1,4-dioxane(1,4-D) biodegradation. The enriched culture was investigated for 1,4-dioxane mineralization, co-metabolism of 1,4-dioxane and extra carbon sources, and characterized 1,4-dioxane biodegradation kinetics. The mineralization test indicates that the enriched culture was able to degrade 1,4-dioxane as the sole carbon and energy source. Interestingly, the distribution of 1,4-dioxane into the final biodegrading products were 36.9% into biomass, 58.3% completely mineralized to CO2, and about 4% escaped as VOC. The enriched culture has a high affinity with 1,4-dioxane during biodegradation. The kinetic coefficients of the Monod equation were qmax = 0.0063 mg 1,4-D/mg VSS/h, Ks = 9.42 mg/L, YT = 0.43 mg VSS/mg 1,4-dioxane and the decay rate was kd = 0.023 mg/mg/h. Tetrahydrofuran (THF) and ethylene glycol were both consumed together with 1,4-dioxane by the enriched culture; however, ethylene glycol did not show any influence on 1,4-dioxane biodegradation, while THF proved to be a competitive. View Full-Text
Keywords: biodegradation; mineralization; kinetic parameter; competitive inhibition biodegradation; mineralization; kinetic parameter; competitive inhibition
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MDPI and ACS Style

Lee, K.H.; Wie, Y.M.; Lee, Y.-S. Characterization of 1,4-Dioxane Biodegradation by a Microbial Community. Water 2020, 12, 3372. https://doi.org/10.3390/w12123372

AMA Style

Lee KH, Wie YM, Lee Y-S. Characterization of 1,4-Dioxane Biodegradation by a Microbial Community. Water. 2020; 12(12):3372. https://doi.org/10.3390/w12123372

Chicago/Turabian Style

Lee, Kang H., Young M. Wie, and Yong-Soo Lee. 2020. "Characterization of 1,4-Dioxane Biodegradation by a Microbial Community" Water 12, no. 12: 3372. https://doi.org/10.3390/w12123372

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