Investigating the Potential of River Sediment Bacteria for Trichloroethylene Bioremediation DOI Open Access
Ranjit Gurav, Chang Ji, Sangchul Hwang

et al.

Water, Journal Year: 2024, Volume and Issue: 16(20), P. 2941 - 2941

Published: Oct. 16, 2024

Trichloroethylene (TCE) is a prevalent groundwater contaminant detected worldwide, and microbes are sensitive indicators initial responders to these chemical contaminants causing disturbances their ecosystem. In this study, isolated from San Marcos River sediment were screened for TCE degradation potential. Among the twelve isolates (SAN1-12), five demonstrated within 5 days at 25 °C 40 mg/L of concentration in following order: SAN8 (87.56%), SAN1 (77.31%), SAN2 (76.58%), SAN3 (49.20%), SAN7 (3.36%). On increasing 80 mg/L, efficiency declined, although remained prominent degrader with 75.67% degradation. The TCE-degrading identified as Aeromonas sp. SAN1, Bacillus SAN2, Gordonia SAN3, proteolyticus using 16S rRNA sequencing. cell biomass significantly improved when incubation temperature was increased 30 °C. However, both slightly acidic alkaline pH levels, well higher concentrations, lowered efficacy Nevertheless, conditions led an increase bacterial biomass.

Language: Английский

Laccase immobilized on amino modified magnetic biochar as a recyclable biocatalyst for efficient degradation of trichloroethylene DOI

Yaoyu Yang,

Shaobin Zhang, Wenya Dong

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 282, P. 136709 - 136709

Published: Oct. 20, 2024

Language: Английский

Citations

6
Interaction between nitrate and trichloroethene bioreduction in mixed anaerobic cultures DOI Creative Commons
Dongmei Yang,

Fenli Min,

Ying Li

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 15, 2025

Bioremediation of trichloroethene (TCE)-contaminated sites often leads to groundwater acidification, while nitrate-polluted tend generate alkalization. TCE and nitrate coexist at contaminated sites; however, the pH variation caused by self-alkalization self-acidification how these processes affect reduction reductive dichlorination, have not been studied. This study investigated interaction between TCE, two common co-contaminants, during bioreduction in serum bottles containing synthetic mineral salt media microbial consortia. Our results showed that concentrations up 0.3 mM stimulated reduction, effect on dechlorination was more complex. Nitrate primarily inhibited dichloroethene (DCE) but enhanced vinyl chloride (VC) ethene. Mechanistic analysis suggested this inhibition due thermodynamic favorability over promotion VC linked stabilization via self-alkalization. As initial concentration increased from 0 3 mM, relative abundance putatively denitrifying genera, such as Petrimonas Trichlorobacter, increased. However, fermentative Clostridium sharply declined 31.11 1.51%, indicating strong inhibition. Additionally, Dehalococcoides, a genus capable reducing ethene, slightly 23.91 24.26% decreased 18.65% suggesting Dehalococcoides exhibits degree tolerance high under specific conditions. Overall, our findings highlight potential for simultaneous nitrate, even elevated concentrations, facilitated self-regulating control anaerobic mixed dechlorinating provides novel insights into bioremediation strategies addressing co-contaminated sites.

Language: Английский

Citations

0
Embedded slow-release materials for the remediation of organic pollutants in groundwater：A review DOI Creative Commons
Bing Qin, Qizhi Zhu,

Yuning Yang

et al.

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101108 - 101108

Published: March 1, 2025

Language: Английский

Citations

0
Microbial remediation using biomass for sustainable environmental management DOI
Farooq Sher,

Seyid Zeynab Hashimzada,

Emina Boškailo

et al.

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 99 - 121

Published: Jan. 1, 2025

Language: Английский

Citations

0
Effect of soil-groundwater system on migration and transformation of organochlorine pesticides: A review DOI Creative Commons

Haohao Li,

Lin Huo,

Rui Zhang

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 290, P. 117564 - 117564

Published: Dec. 18, 2024

Language: Английский

Citations

2
Investigating the Potential of River Sediment Bacteria for Trichloroethylene Bioremediation DOI Open Access
Ranjit Gurav, Chang Ji, Sangchul Hwang

et al.

Water, Journal Year: 2024, Volume and Issue: 16(20), P. 2941 - 2941

Published: Oct. 16, 2024

Trichloroethylene (TCE) is a prevalent groundwater contaminant detected worldwide, and microbes are sensitive indicators initial responders to these chemical contaminants causing disturbances their ecosystem. In this study, isolated from San Marcos River sediment were screened for TCE degradation potential. Among the twelve isolates (SAN1-12), five demonstrated within 5 days at 25 °C 40 mg/L of concentration in following order: SAN8 (87.56%), SAN1 (77.31%), SAN2 (76.58%), SAN3 (49.20%), SAN7 (3.36%). On increasing 80 mg/L, efficiency declined, although remained prominent degrader with 75.67% degradation. The TCE-degrading identified as Aeromonas sp. SAN1, Bacillus SAN2, Gordonia SAN3, proteolyticus using 16S rRNA sequencing. cell biomass significantly improved when incubation temperature was increased 30 °C. However, both slightly acidic alkaline pH levels, well higher concentrations, lowered efficacy Nevertheless, conditions led an increase bacterial biomass.

Language: Английский

Citations

0