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Article

Biodegradation of Phenol by Rhodococcus sp. Strain SKC: Characterization and Kinetics Study

by
Yujuan Wen
1,*,
Chaofan Li
1,
Xiaoming Song
1 and
Yuesuo Yang
1,2
1
Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang 110044, China
2
College of New Energy and Environment, Jilin University, Changchun 130021, China
*
Author to whom correspondence should be addressed.
Molecules 2020, 25(16), 3665; https://doi.org/10.3390/molecules25163665
Submission received: 10 June 2020 / Revised: 6 August 2020 / Accepted: 9 August 2020 / Published: 12 August 2020
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Abstract

This study focuses on the kinetics of a pure strain of bacterium Rhodococcus sp. SKC, isolated from phenol-contaminated soil, for the biodegradation of phenol as its sole carbon and energy source in aqueous medium. The kinetics of phenol biodegradation including the lag phase, the maximum phenol degradation rate, maximum growth rate (Rm) and maximum yield coefficient (Y) for each Si (initial phenol concentration, mg/L) were fitted using the Gompertz and Haldane models of substrate inhibition (R2 > 0.9904, RMSE < 0.00925). The values of these parameters at optimum conditions were μmax = 0.30 h−1, Ks = 36.40 mg/L, and Ki = 418.79 mg/L, and that means the inhibition concentration of phenol was 418.79 mg/L. By comparing with other strains of bacteria, Rhodococcus sp. SKC exhibited a high yield factor and tolerance towards phenol. This study demonstrates the potential application of Rhodococcus sp. SKC for the bioremediation of phenol contaminate.
Keywords: phenol; Rhodococcus sp.; kinetic model; biokinetic constants phenol; Rhodococcus sp.; kinetic model; biokinetic constants

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MDPI and ACS Style

Wen, Y.; Li, C.; Song, X.; Yang, Y. Biodegradation of Phenol by Rhodococcus sp. Strain SKC: Characterization and Kinetics Study. Molecules 2020, 25, 3665. https://doi.org/10.3390/molecules25163665

AMA Style

Wen Y, Li C, Song X, Yang Y. Biodegradation of Phenol by Rhodococcus sp. Strain SKC: Characterization and Kinetics Study. Molecules. 2020; 25(16):3665. https://doi.org/10.3390/molecules25163665

Chicago/Turabian Style

Wen, Yujuan, Chaofan Li, Xiaoming Song, and Yuesuo Yang. 2020. "Biodegradation of Phenol by Rhodococcus sp. Strain SKC: Characterization and Kinetics Study" Molecules 25, no. 16: 3665. https://doi.org/10.3390/molecules25163665

APA Style

Wen, Y., Li, C., Song, X., & Yang, Y. (2020). Biodegradation of Phenol by Rhodococcus sp. Strain SKC: Characterization and Kinetics Study. Molecules, 25(16), 3665. https://doi.org/10.3390/molecules25163665

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