Ammonium enrichment, nitrate attenuation and nitrous oxide production along groundwater flow paths: Carbon isotopic and DOM optical evidence

Journal of Hydrology, Год журнала: 2024, Номер 632, С. 130943 - 130943

Опубликована: Фев. 27, 2024

Язык: Английский

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Effect of low-carbon coal gangue on the stability and dissolved organic matter characteristics of co-pyrolysis biochar: insights on pyrolysis temperatures and minerals

Carbon Research, Год журнала: 2025, Номер 4(1)

Опубликована: Фев. 3, 2025

Abstract The stability and dissolved organic matter (DOM) characteristics of biochar have an essential effect on carbon emission migration transformation pollutants. In this work, straw coal mine waste (coal gangue)-straw co-pyrolysis were produced at 300, 450, 600 °C. effects gangue biochar's stability, structure, the components biochar-derived DOM investigated. results showed that enhanced thermal chemical by 1.16%–8.25% 39.17%–68.36%, respectively. They also promoted aromatization process when pyrolysis temperature increased from 300 to 450 content was lower than 35.79%–55.52%, indicating inhibited release DOM. Moreover, humification degree low temperatures but accelerated decomposition aromatic molecules in high temperatures. proportion low-aromatic humic-like substance 1.28% 50.87% 1.44% 88.14% with increasing temperature. Thus, a synergistic controlling biochar. three primary minerals (SiO 2 , Al O 3 Fe ) is core mechanisms impacting characteristics. This work provides information for applications showing adding can boost modify molecular properties Graphical

Язык: Английский

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Mechanisms of cadmium release from manganese-rich sediments driven by exogenous DOM and the role of microorganisms

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 274, С. 116237 - 116237

Опубликована: Март 18, 2024

Dissolved organic matter (DOM) is a crucial component of natural sediments that alters Cd sequestration. Nevertheless, how different types DOM fuel mobilization in Mn-rich has not been elucidated. In the present study, four typical DOM, fluvic acid (FA), bovine serum albumin (BSA), sodium alginate (SA), and dodecyl benzene sulfonate (SDBS), were used to amend Cd-contaminated sediment study their effects on Cd/Mn biotransformation microbial community response. The results demonstrated drive shifts enhance microbially mediated Mn oxide (MnO) reduction release. amendment terrestrial- anthropogenic-derived (FA SDBS) mainly contributed enriching Mn-reducing bacteria phylum Proteobacteria, its abundance increased by 38.16-74.47 % 56.41-73.98 %, respectively. Meanwhile, microbial-derived (BSA SA) stimulated abundances metal(loid)-resistant Firmicutes. Accompanied structure, diversity, co-occurrence network shifts, concentration oxidation-reduction potential changed, resulting enhanced mobilization. Importantly, FA release most remarkably, probably because decreased cooperative interactions between bacterial populations, stronger MnOs, higher aromaticity hydrophobicity after amendment. This linked functional communities, explored roles lake sediments.

Язык: Английский

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Reductive dissolution of As-bearing iron oxides: Mediating mechanism of fulvic acid and dissimilated iron reducing bacteria

The Science of The Total Environment, Год журнала: 2024, Номер 935, С. 173443 - 173443

Опубликована: Май 21, 2024

Язык: Английский

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Bacterial community regulation of soil organic matter molecular structure in heavy metal-rich mangrove sediments

Journal of Hazardous Materials, Год журнала: 2023, Номер 465, С. 133086 - 133086

Опубликована: Ноя. 24, 2023

Язык: Английский

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Ecological role of reed belts in lakeside zone: Impacts on nutrient retention and bacterial community assembly during Hydrilla verticillata decomposition

Journal of Environmental Management, Год журнала: 2024, Номер 354, С. 120489 - 120489

Опубликована: Фев. 24, 2024

Язык: Английский

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Analysis of dissolved organic matter characteristics in pharmaceutical wastewater via spectroscopy combined with Fourier-transform ion cyclotron resonance mass spectrometry

Journal of Hazardous Materials, Год журнала: 2024, Номер 479, С. 135706 - 135706

Опубликована: Сен. 3, 2024

Язык: Английский

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Co-selective effect of dissolved organic matter and chlorine on the bacterial community and their antibiotic resistance in biofilm of drinking water distribution pipes

Water Research, Год журнала: 2024, Номер 268, С. 122664 - 122664

Опубликована: Окт. 19, 2024

Язык: Английский

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Effect of soil-groundwater system on migration and transformation of organochlorine pesticides: A review

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 290, С. 117564 - 117564

Опубликована: Дек. 18, 2024

Язык: Английский

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Arsenic mobilization by Bathyarchaeia in subsurface sediments at the Jianghan Plain, China

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 138002 - 138002

Опубликована: Март 1, 2025

Язык: Английский

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