Significantly Enhanced Nitrate and Phosphorus Removal by Pyrite/Sawdust Composite-Driven Mixotrophic Denitrification with Boosted Electron Transfer: Comprehensive Evaluation of Water–Gas–Biofilm Phases during a Long-Term Study

Environmental Science & Technology, Год журнала: 2024, Номер 58(23), С. 10149 - 10161

Опубликована: Май 29, 2024

Further reducing total nitrogen (TN) and phosphorus (TP) in the secondary effluent needs to be realized effectively an eco-friendly manner. Herein, four pyrite/sawdust composite-based biofilters were established treat simulated for 304 days. The results demonstrated that TN TP concentrations from under optimal hydraulic retention time (HRT) of 3.5 h stable at <2.0 0.1 mg/L, respectively, no significant differences observed between inoculated sludge sources. had low N2O, CH4, CO2 emissions, effluent's DOM was mainly composed five fluorescence components. Moreover, mixotrophic denitrifiers (Thiothrix) sulfate-reducing bacteria (Desulfosporosinus) contributing microbial sulfur cycles enriched biofilm. Co-occurrence network analysis deciphered Chlorobaculum Desulfobacterales key genera, which formed obvious cycle process strengthened denitrification capacity. higher abundances genes encoding extracellular electron transport (EET) chains/mediators revealed pyrite not only functioned as conduit stimulate direct interspecies transfer by flagella but also facilitated EET-associated enzymes denitrification. This study comprehensively evaluates water–gas–biofilm phases during a long-term study, providing in-depth understanding boosted pyrite-based systems.

Язык: Английский

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Tracing the electron transfer behavior driven by hydrophyte-derived carbon materials empowered autotrophic denitrification in iron-based constructed wetlands: Efficacy and enhancement mechanism

Water Research, Год журнала: 2025, Номер 275, С. 123169 - 123169

Опубликована: Янв. 21, 2025

Язык: Английский

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Heterotrophic denitrification enhancement via effective organic matter degradation driven by suitable iron dosage in sediment

Journal of Environmental Management, Год журнала: 2025, Номер 375, С. 124275 - 124275

Опубликована: Янв. 24, 2025

Язык: Английский

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Promotion of nitrogen removal in a denitrification process elevated by zero-valent iron under low carbon-to-nitrogen ratio

Bioresource Technology, Год журнала: 2023, Номер 386, С. 129566 - 129566

Опубликована: Июль 26, 2023

Язык: Английский

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Fe0-induced multifunctional effect of aerobic denitrification, autotrophic denitrification and chemically enhanced phosphorus removal in oxic/anoxic process for low C/N wastewater

Chemical Engineering Journal, Год журнала: 2024, Номер 483, С. 149218 - 149218

Опубликована: Фев. 2, 2024

Язык: Английский

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Key enzymes, functional genes, and metabolic pathways of the nitrogen removal-related microorganisms

Critical Reviews in Environmental Science and Technology, Год журнала: 2024, Номер 54(23), С. 1672 - 1691

Опубликована: Май 16, 2024

Biological nitrogen removal is a classic technique for removing from wastewater that has been studied extensively and gives high rate, energy efficiency, relatively environmentally benign. Using biological processes to treat the diverse components of requires thorough understanding microorganisms pathways involved. However, information regarding participating in remains limited. This review presents current knowledge researches into these microorganisms, including ammonia oxidizing bacteria, archaea, complete oxidation nitrite-oxidizing anaerobic ammonium denitrifying heterotrophic nitrification-aerobic denitrification bacteria. The metabolic enzymatic reactions involved cycle abovementioned are demonstrated. key enzymes, functional genes, removal-related were discussed. Additionally, advantages different oxidation, denitrifying, HN-AD described. Finally, limitations strategies unraveling presented. aim improve our principle advanced allow possible improvements treatment be identified.

Язык: Английский

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Advance in the sulfur-based electron donor autotrophic denitrification for nitrate nitrogen removal from wastewater

World Journal of Microbiology and Biotechnology, Год журнала: 2023, Номер 40(1)

Опубликована: Ноя. 8, 2023

Язык: Английский

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Simultaneous removal of nitrogen, phosphorus, and organic matter from oligotrophic water in a system containing biochar and construction waste iron: Performances and biotic community analysis

Environmental Research, Год журнала: 2024, Номер 255, С. 119187 - 119187

Опубликована: Май 20, 2024

Язык: Английский

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Simultaneous removal of nitrate nitrogen and ammonium nitrogen by partial denitrification coupled with anammox synergy by zero-valent iron

Journal of Cleaner Production, Год журнала: 2024, Номер 469, С. 143169 - 143169

Опубликована: Июль 15, 2024

Язык: Английский

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Shift in microorganism and functional gene abundance during completely autotrophic nitrogen removal over nitrite (CANON) process

Journal of Environmental Management, Год журнала: 2024, Номер 359, С. 121009 - 121009

Опубликована: Май 1, 2024

Язык: Английский

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