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 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.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:42 |
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| Enthalten in: |
Environmental technology - 42(2021), 15 vom: 22. Juni, Seite 2361-2371 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lu, Binchao [VerfasserIn] |
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| Links: |
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| Themen: |
3DLC36A01X |
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| Anmerkungen: |
Date Completed 09.06.2021 Date Revised 09.06.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1080/09593330.2019.1701567 |
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| funding: |
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NLM304474266 |
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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 | |
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| 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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