In situ reductive dehalogenation of groundwater driven by innovative organic carbon source materials: Insights into the organohalide-respiratory electron transport chain

Yu, Yang; Zhang, Yueyan; Liu, Yuqing; Lv, Mengran; Wang, Zeyi; Wen, Li-Lian; Li, Ang

doi:10.1016/j.jhazmat.2023.131243

Cited by 16 publications

(2 citation statements)

References 128 publications

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“…Additionally, carbon sources possess detoxifying properties that aid dehalogenating bacteria in combating toxins and enhancing their adaptability to harsh environments. For example, organic acids such as acetate and propionate, water-soluble carbon sources such as glucose ( Chen et al, 2018 ), and woody wastes such as lignin or cellulose containing lignin ( Yu et al, 2023 ) can provide additional energy due to their ease of metabolism and utilization within the biological system, thus enhancing the antitoxicity of dehalogenating bacteria.…”

Section: Removal Of Chcs By Dehalogenation Respiratory Anaerobic Bact...mentioning

confidence: 99%

“…An appropriate amount of nitrogen source can promote the synthesis and repair of cell membranes, maintain the balance of osmotic pressure inside and outside the cell, and protect the internal structure of the cell from damage by the external environment ( Chen et al, 2013 ). The cell wall of dehalogenated bacteria is mainly composed of peptidoglycan and peptidoglycan inositol, and the supply of a nitrogen source affects the synthesis and degradation process of these polysaccharides, which in turn are involved in cell wall synthesis and the maintenance of structural protein stability ( Yu et al, 2023 ). Common nitrogen sources include ammoniacal nitrogen (e.g., urea and ammonium salt), nitric nitrogen (e.g., nitrate) and organic nitrogen (e.g., protein and amino acid) ( Bin Hudari et al, 2022 ).…”

Section: Removal Of Chcs By Dehalogenation Respiratory Anaerobic Bact...mentioning

confidence: 99%

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Biochar, microbes, and biochar-microbe synergistic treatment of chlorinated hydrocarbons in groundwater: a review

Niu,

Li,

Gao

et al. 2024

Front. Microbiol.

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Dehalogenating bacteria are still deficient when targeted to deal with chlorinated hydrocarbons (CHCs) contamination: e.g., slow metabolic rates, limited substrate range, formation of toxic intermediates. To enhance its dechlorination capacity, biochar and its composites with appropriate surface activity and biocompatibility are selected for coupled dechlorination. Because of its special surface physical and chemical properties, it promotes biofilm formation by dehalogenating bacteria on its surface and improves the living environment for dehalogenating bacteria. Next, biochar and its composites provide active sites for the removal of CHCs through adsorption, activation and catalysis. These sites can be specific metal centers, functional groups or structural defects. Under microbial mediation, these sites can undergo activation and catalytic cycles, thereby increasing dechlorination efficiency. However, there is a lack of systematic understanding of the mechanisms of dechlorination in biogenic and abiogenic systems based on biochar. Therefore, this article comprehensively summarizes the recent research progress of biochar and its composites as a “Taiwan balm” for the degradation of CHCs in terms of adsorption, catalysis, improvement of microbial community structure and promotion of degradation and metabolism of CHCs. The removal efficiency, influencing factors and reaction mechanism of the degraded CHCs were also discussed. The following conclusions were drawn, in the pure biochar system, the CHCs are fixed to its surface by adsorption through chemical bonds on its surface; the biochar composite material relies on persistent free radicals and electron shuttle mechanisms to react with CHCs, disrupting their molecular structure and reducing them; biochar-coupled microorganisms reduce CHCs primarily by forming an “electron shuttle bridge” between biological and non-biological organisms. Finally, the experimental directions to be carried out in the future are suggested to explore the optimal solution to improve the treatment efficiency of CHCs in water.

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Section: Removal Of Chcs By Dehalogenation Respiratory Anaerobic Bact...mentioning

confidence: 99%

Section: Removal Of Chcs By Dehalogenation Respiratory Anaerobic Bact...mentioning

confidence: 99%

Biochar, microbes, and biochar-microbe synergistic treatment of chlorinated hydrocarbons in groundwater: a review

Niu,

Li,

Gao

et al. 2024

Front. Microbiol.

View full text Add to dashboard Cite

show abstract

Leveraging weak electrical stimulation and artificial intelligence for sustainable microbial dehalogenation in groundwater remediation

Lv,

Yao,

Qin

et al. 2024

Water Security: Big Data-Driven Risk Identification, Assessment and Control of Emerging Contaminants

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Strategies and mechanisms for improving groundwater remediation efficiency of chlorinated ethenes by controlling the particle size of polyhydroxyalkanoate

Ma,

Lei,

Gong

et al. 2024

Chemical Engineering Journal

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In situ reductive dehalogenation of groundwater driven by innovative organic carbon source materials: Insights into the organohalide-respiratory electron transport chain

Cited by 16 publications

References 128 publications

Biochar, microbes, and biochar-microbe synergistic treatment of chlorinated hydrocarbons in groundwater: a review

Biochar, microbes, and biochar-microbe synergistic treatment of chlorinated hydrocarbons in groundwater: a review

Leveraging weak electrical stimulation and artificial intelligence for sustainable microbial dehalogenation in groundwater remediation

Strategies and mechanisms for improving groundwater remediation efficiency of chlorinated ethenes by controlling the particle size of polyhydroxyalkanoate

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