Construction of a Spatial Distribution Relationship Network between Dissolved Organic Matter and Microbial Communities in Chlorobenzene-Polluted Groundwater

ACS ES&T Water, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Dissolved organic matter (DOM) is an important geochemical feature connecting pollutants and microorganisms in groundwater. However, the patterns of DOM–microbial community interactions caused by spatial distribution differences remain unclear, necessitating construction a correlation network to elucidate relationships between DOM accurately predict biodegradation process pollutants. This study selected chlorobenzene (CBs)-contaminated bioremediation site analyze fluorescent components molecular structures Microbial metabolic activities were more active areas with high CBs concentration, leading significant microbial source contributions DOM. Intense degradation processes accompanied transformation highly oxidized unsaturated Co-occurrence analysis revealed that communities exhibited density, Pseudomonas playing crucial role The constructed DOM–CBs–microbial relationship showed indices, such as O/C, NOSC, CHO (%), strongly correlated structure could directly indicate CBs. characteristics their links provide rapid accurate method monitor contaminated

Language: Английский

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Control of chlorination disinfection by-products in drinking water by combined nanofiltration process: A case study with trihalomethanes and haloacetic acids

Chemosphere, Journal Year: 2024, Volume and Issue: 358, P. 142121 - 142121

Published: April 25, 2024

Language: Английский

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Understanding dissolved organic matters in stormwater from different urban land uses: implications for reuse safety

Frontiers of Environmental Science & Engineering, Journal Year: 2025, Volume and Issue: 19(4)

Published: Feb. 20, 2025

Language: Английский

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The formation of chlorinated organics during the removal of refractory organic matter in landfill leachate by the UV/H2O2 and UV/PDS processes

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107359 - 107359

Published: Feb. 27, 2025

Language: Английский

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Molecular characteristics of emerging perfluoroalkyl and polyfluoroalkyl substances (PFAS) and dissolved organic matter (DOM) in surface waters around fluorine-related industries in a Chinese Megacity

Environment International, Journal Year: 2025, Volume and Issue: 198, P. 109444 - 109444

Published: April 1, 2025

Fluorine-related industrial discharges are the main source of per- and polyfluoroalkyl substances (PFAS) contamination in surrounding surface waters, but long-term environmental impacts their residual PFAS interactions between dissolved organic matter (DOM) field waters have rarely been discussed. In this study, concentrations 32 target were quantified, 50 identified semi-quantified by suspect nontarget screening, molecular characteristics DOM analyzed water Shanghai. Concentrations ∑PFAS 284 ∼ 3018 ng/L. Perfluorobutane sulfonate acid (PFBS) perfluorooctanoic (PFOA) remained predominant compounds at most sampling sites, hexafluoropropylene oxide trimer (HFPO-TA) exhibited extremely high values a few specific sites. Near historical fluorotelomer manufacturer which was closed 2017, concentration still high-level 1800 Thirteen including 7 iodinated perfluoroalkyl acids (IPFAAs) 100 % samples. A total 8134 formulas identified. For elemental composition, CHOS (24 %) has highest percentage, while for species, lignin (36 proportion molecules. When assignment fluorine included analysis, percentage fluorine-containing reached to 55 %, suggesting anthropogenic influences. Emerging PFAS, i.e., perfluoropentanoic (PFPeA) dimer (HFPO-DA) negatively related (p < 0.05) due microorganism activities. This study revealed persistent impact fluorine-related industries behavior aquatic environments, providing support systematic comprehensive evaluation health.

Language: Английский

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Comparison on the formation and toxicity of chlorine species during the advanced treatment of real municipal secondary effluent using three advanced oxidation processes

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 117272 - 117272

Published: May 1, 2025

Language: Английский

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Bromide and its associated brominated disinfection byproducts: occurrence, toxicity and control strategies

Frontiers of Environmental Science & Engineering, Journal Year: 2024, Volume and Issue: 19(1)

Published: Nov. 15, 2024

Language: Английский

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Enhanced Coagulation for Removal of Dissolved Organic Nitrogen in Water: A Review

Chemosphere, Journal Year: 2024, Volume and Issue: unknown, P. 143429 - 143429

Published: Sept. 1, 2024

Language: Английский

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Bf-Mec Enhance the Efficacy of Denitrification and Decarbonization for Reclaimed Water with Low Biodegradable Organic Matter Content

Published: Jan. 1, 2024

Language: Английский

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Electrical stimulation improves the efficiency of treating typical reclaimed water in biofilters

Water Science & Technology, Journal Year: 2024, Volume and Issue: 90(8), P. 2367 - 2381

Published: Oct. 4, 2024

ABSTRACT To conduct advanced treatment on reclaimed water with a low C/N ratio and content of biodegradable organic matter, this paper established an biofilter-microbial electrolysis cell (BF-MEC). Through two-stage influent, the influence electrical stimulation electrochemical structure nitrogen carbon removal system was explored, following results were obtained. The optimal externally applied voltage for BF-MEC is 0.55 V. electrode spacing 100 mm, position when located at bottom system. Compared BF system, in first stage, rates chemical oxygen demand, total ammonia (TAN), (TN) are increased by 13.4, 118.1, 273.65%, respectively. In second COD, TAN, TN up to 277.98, 115, 722.98%, lower part At time, microbial community more abundant, activity lifespan longer, efficiency optimal.

Language: Английский

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