Anaerobic degradation of 2,4-dichlorophenoxyacetic acid by Thauera sp. DKT

Duc, Ha Danh

doi:10.1007/s10532-018-9848-7

Cited by 33 publications

(10 citation statements)

References 52 publications

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“…This result could be attributed to the chloride absorption by bacteria, retention of chloride in unknown metabolites, or both. These phenomena were also for anaerobic degradation of other organic compounds (Ha 2018;Ha and Nguyen 2019).…”

Section: Discussionmentioning

confidence: 77%

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

Duc

Nguyen

2021

Preprint

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The herbicide diuron is extensively used in the agriculture sector and is detected widely in the environment. Although several studies on the degradation of diuron by aerobic micro-organisms have been reported, the degradation of diuron by anaerobic micro-organisms has not been received much attention. Also, no pure culture that can degrade diuron under anaerobic conditions has yet been reported. The evaluation of diuron degradation in the soil and sediment slurries showed that diuron led to a decrease in the biodiversity of the bacterial communities. Two mixed bacterial cultures, one from the soil and the other from sediment slurries, were isolated from the enrichment media under anaerobic conditions. After 30 days of incubation at 30 oC, the mixed bacterial culture from the soil degraded 84.5 ± 5.5%, and that from the sediment slurry degraded 94.5 ± 3.0% of diuron in liquid mineral medium at an initial concentration of 20 mg/L. 1-(3,4-dichlorophenylurea (DCPU), 3-(3-chlorophenyl)-1,1-dimethylurea (CPDMU), and 3,4-dichloroaniline (3,4-DCA) were the major diuron metabolites produced by both the indigenous micro-organisms and the isolated bacteria.

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Section: Discussionmentioning

confidence: 77%

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

Duc

Nguyen

2021

Preprint

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“…Based on previous investigations, Thauera spp. can utilize and degrade aromatic organics, which have been recognized as functionally important in biological process for wastewater treatment (Ha, 2018; Scholten et al, 1999; Jia Zhou et al, 2017), while Defluviicoccus spp. are GAOs that can utilize acetate and propionate as carbon sources (Burow et al, 2007; Dai et al, 2007; Onetto et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Microbial community response of the full‐scale MBR system for mixed leachates treatment

Song

et al. 2022

Water Environment Research

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In practice, mature landfill leachate and incineration (young) leachate are mixed to improve the biodegradability and enhance biological treatment performance. However, the ratio of mature‐to‐young leachates greatly influences MBR treatment efficiency and microbial community structure. This study investigated the treatment efficiency and microbial community structure of full‐scale MBR systems operated under two mix ratios, mature leachate: young leachate = 7:3 (v/v, denoted as LL) and 3:7 (v/v, denoted as IL). LL group showed lower Cl− and COD concentrations but a higher aromatic organic content comparing to IL group, and the COD and UV254 removals for LL were significantly lower than those for IL by MBR treatment. Microbial community structures were similar in both groups at phylum level, with dominant phyla being Proteobacteria (23.8%–32.3%), Bacteroidetes (15.25%–20.7%), Chloroflexi (10.5%–23.1%), and Patescibacteria (9.9%–13.2%). However, the richness and diversity of LL group were lower, and differences were observed at lower taxonomy levels. Results indicated that salinity mainly changed the structure of microbial community, resulting in greater abundance of salt‐tolerant microbials, while refractory organics affected microbial community structure, and also led to decreased diversity and metabolic activity. Therefore, in mixed leachates biological treatment, a higher young leachate ratio is recommended for better organics removal performance. Practitioner Points The trade‐off between refractory organics and salinity in mixed leachate treatment should be paid attention. Refractory organics reduced alpha and functional diversities of microorganisms. Mixed leachate with a higher young leachate ratio reached a better organic removal.

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“…The isolation of diuron-degrading bacteria was performed according to the method used in a previous study (Ha 2018). After one month of enrichment, the diluted slurries of the sediment and the soil described above were used to isolate the bacteria.…”

Section: Anaerobic Degradation Of Diuron In Soil and Sediment Slurriesmentioning

confidence: 99%

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

Duc

Oanh

2022

Arch Microbiol

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The herbicide diuron is extensively used in the agriculture sector and is detected widely in the environment. Although several studies on the degradation of diuron by aerobic micro-organisms have been reported, the degradation of diuron by anaerobic micro-organisms has not been received much attention. Also, no pure culture that can degrade diuron under anaerobic conditions has yet been reported.The evaluation of diuron degradation in the soil and sediment slurries showed that diuron led to a decrease in the biodiversity of the bacterial communities. Two mixed bacterial cultures, one from the soil and the other from sediment slurries, were isolated from the enrichment media under anaerobic conditions. After 30 days of incubation at 30 o C, the mixed bacterial culture from the soil degraded 84.5 ± 5.5%, and that from the sediment slurry degraded 94.5 ± 3.0% of diuron in liquid mineral medium at an initial concentration of 20 mg/L. 1-(3,4-dichlorophenylurea (DCPU), 3-(3-chlorophenyl)-1,1-dimethylurea (CPDMU), and 3,4-dichloroaniline (3,4-DCA) were the major diuron metabolites produced by both the indigenous micro-organisms and the isolated bacteria.

show abstract

Anaerobic degradation of 2,4-dichlorophenoxyacetic acid by Thauera sp. DKT

Cited by 33 publications

References 52 publications

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

Microbial community response of the full‐scale MBR system for mixed leachates treatment

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

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