Biodegradation Kinetics of Tetrahydrofuran, Benzene, Toluene, and Ethylbenzene as Multi-substrate by Pseudomonas oleovorans DT4

Dong-Zhi Chen, Yun-Feng Ding, Yu-Yang Zhou, Jie-Xu Ye and Jian-Meng Chen
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Dong-Zhi Chen: College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
Yun-Feng Ding: College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
Yu-Yang Zhou: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
Jie-Xu Ye: College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
Jian-Meng Chen: College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China

IJERPH, 2014, vol. 12, issue 1, 1-14

Abstract: The biodegradation kinetics of tetrahydrofuran, benzene (B), toluene (T), and ethylbenzene (E) were systematically investigated individually and as mixtures by a series of aerobic batch degradation experiments initiated by Pseudomonas oleovorans DT4. The Andrews model parameters, e.g., maximum specific growth rates ( ? max ), half saturation, and substrate inhibition constant, were obtained from single-substrate experiments. The interaction parameters in the sum kinetics model (SKIP) were obtained from the dual substrates. The ? max value of 1.01 for tetrahydrofuran indicated that cell growth using tetrahydrofuran as carbon source was faster than the growth on B ( ? max , B = 0.39) or T ( ? max , T = 0.39). The interactions in the dual-substrate experiments, including genhancement, inhibition, and co-metabolism, in the mixtures of tetrahydrofuran with B or T or E were identified. The degradation of the four compounds existing simultaneously could be predicted by the combination of SKIP and co-metabolism models. This study is the first to quantify the interactions between tetrahydrofuran and BTE.

Keywords: biodegradation; tetrahydrofuran; benzene; toluene; ethylbenzene; kinetics model (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2014
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