Immobilization of Rhodococcus qingshengii strain FF on the surface of polyethylene and its adsorption and biodegradation of mimic produced water.

Autor: Nie H; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China., Nie M; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China. Electronic address: niemaiqian@xauat.edu.cn., Diwu Z; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China. Electronic address: jack@aatbio.com., Wang L; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China; Key Laboratory of Membrane Separation of Shaanxi Province, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China., Yan H; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China., Bai X; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, Shaanxi Province The People's Republic of China.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2021 Feb 05; Vol. 403, pp. 124075. Date of Electronic Publication: 2020 Sep 22.
DOI: 10.1016/j.jhazmat.2020.124075
Abstrakt: Low pH and high salinity characteristic of produced water (PW) posed a big challenge for the direct biological treatment. The immobilization of R. qingshengii strain FF, which degraded petroleum effectively under low pH, and application of immobilized R. qingshengii strain FF in treating mimic PW was studied in this work. The immobilization of R. qingshengii strain FF on the surface of polyethylene foam (PEF), one type of waste packaging materials, was optimized using the response surface methodology. Under optimum conditions, cell density of R. qingshengii strain FF immobilized on the surface of PEF reached 388 mg (cells)/g(PEF). In addition, a few factors, including hydraulic retention time (HRT), pH and salinity, were studied for treating mimic PW using immobilized R. qingshengii strain FF. The result of this study demonstrated that TPH degradation efficiency of PW by immobilized R. qingshengii strain FF reached above 90% when HRT was longer than 8 h. Weak acid and high salinity conditions only moderately decreased TPH. Asphalt, alkanes and aromatic hydrocarbon contained in petroleum can be degraded to some extent. These results indicated that immobilized R. qingshengii strain FF can be used as a highly efficient strain which could be used in biological treatment of real PW.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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