Co-metabolic biodegradation of 4-chlorophenol by photosynthetic bacteria

ABSTRACTEnvironmental contamination by 4-chlorophenol (4-CP) is a major concern. Photosynthetic bacteria have the ability to biodegrade 4-CP under dark aerobic conditions. In this study, we found that using different carbon sources (i.e. glucose, sodium acetate, sodium propionate sucrose, and malic...

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Veröffentlicht in:Environmental technology. - 1993. - 42(2021), 15 vom: 22. Juni, Seite 2361-2371
1. Verfasser: Lu, Binchao (VerfasserIn)
Weitere Verfasser: Wang, Liang, Zheng, Xin, Hu, Zhongce, Pan, Zhiyan
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article 4-chlorophenol Co-metabolic biodegradation dark aerobic phenol photosynthetic bacteria Chlorophenols 3DLC36A01X
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520 |a ABSTRACTEnvironmental contamination by 4-chlorophenol (4-CP) is a major concern. Photosynthetic bacteria have the ability to biodegrade 4-CP under dark aerobic conditions. In this study, we found that using different carbon sources (i.e. glucose, sodium acetate, sodium propionate sucrose, and malic acid) as co-metabolic substrates accelerated the biodegradation of 4-CP, and this acceleration was especially pronounced in the glucose treatment. A maximum degradation rate of 96.99% was reached under a concentration of 3.0 g·L-1 after 6 days of culture. The optimum conditions were pH 7.5, a temperature of 30°C, and a rotation speed of 135 rpm. The biodegradation of 4-CP was achieved at a range of salinities (0-3.0% NaCl, w/v). The biodegradation kinetics agreed with the Haldane model, and the kinetic constants were rmax = 0.14 d-1, Km = 33.9 mg·L-1, and Ki = 159.6 mg·L-1. Additionally, the coexistence of phenol or 2,4-dichlorophenol (2, 4-DCP) had a certain impact on the degradation of 4-CP under dark aerobic conditions. When the coexisting phenol concentration reached 100 mg·L-1, the maximum degradation rate of 4-CP reached 90.20%. The degradation rate of 4-CP decreased as the concentration of coexisting 2, 4-DCP increased 
650 4 |a Journal Article 
650 4 |a 4-chlorophenol 
650 4 |a Co-metabolic biodegradation 
650 4 |a dark aerobic 
650 4 |a phenol 
650 4 |a photosynthetic bacteria 
650 7 |a Chlorophenols  |2 NLM 
650 7 |a 4-chlorophenol  |2 NLM 
650 7 |a 3DLC36A01X  |2 NLM 
700 1 |a Wang, Liang  |e verfasserin  |4 aut 
700 1 |a Zheng, Xin  |e verfasserin  |4 aut 
700 1 |a Hu, Zhongce  |e verfasserin  |4 aut 
700 1 |a Pan, Zhiyan  |e verfasserin  |4 aut 
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856 4 0 |u http://dx.doi.org/10.1080/09593330.2019.1701567  |3 Volltext 
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