Element sulfur-based autotrophic denitrification constructed wetland as an efficient approach for nitrogen removal from low C/N wastewater

Water Research, Год журнала: 2022, Номер 226, С. 119258 - 119258

Опубликована: Окт. 15, 2022

Язык: Английский

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Sulfur autotrophic denitrification as an efficient nitrogen removals method for wastewater treatment towards lower organic requirement: A review

Water Research, Год журнала: 2023, Номер 245, С. 120569 - 120569

Опубликована: Сен. 1, 2023

Язык: Английский

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Simultaneously enhanced autotrophic–heterotrophic denitrification in iron-based ecological floating bed by plant biomass: Metagenomics insights into microbial communities, functional genes and nitrogen metabolic pathways

Water Research, Год журнала: 2023, Номер 248, С. 120868 - 120868

Опубликована: Ноя. 13, 2023

Язык: Английский

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Boosting the denitrification efficiency of iron-based constructed wetlands in-situ via plant biomass-derived biochar: Intensified iron redox cycle and microbial responses

Water Research, Год журнала: 2024, Номер 253, С. 121285 - 121285

Опубликована: Фев. 7, 2024

Язык: Английский

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Nitrogen removal by algal-bacterial consortium during mainstream wastewater treatment: Transformation mechanisms and potential N2O mitigation

Water Research, Год журнала: 2023, Номер 235, С. 119890 - 119890

Опубликована: Март 20, 2023

Язык: Английский

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Dissimilatory nitrate reduction to ammonium has a competitive advantage over denitrification under nitrate-limited conditions

Reviews in Environmental Science and Bio/Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Язык: Английский

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Evaluation of nitrous oxide reduction in solid carbon source-driven counter-diffusional biofilm denitrification system

Water Research X, Год журнала: 2025, Номер 27, С. 100306 - 100306

Опубликована: Янв. 22, 2025

Solid carbon-driven biofilm system can provide sufficient carbon source for denitrification, while its counter-diffusional structure could inevitably induce the delayed carbon-nitrogen contact and electron transport, further affecting footprints mainly contributed by nitrous oxide (N2O) at wastewater treatment plants (WWTPs). However, detailed understanding of N2O dynamics during solid-phase denitrification (SPD) has not been disclosed. In this work, a fixed bed bioreactor driven polycaprolactone (PCL) was constructed operated over 180 days, achieving 97 %-99 % total nitrogen (TN) removal efficiency. Biochemical results indicated that under condition each (NO x ) concentration maintained 30 mg-N/L, competition between upstream downstream pools still observed PCL-driven even providing source. For example, coexistent nitrate (NO3 -)+ nitrite (NO2 -)+N2O condition, few electrons (i.e., 12.6 %) distributed to reductase (Nos), significantly decreasing reduction rate 1.42 mg/g VSS/h). Under TN in scheme containing NO3 -+NO2 -+N2O be 1.75-2.3 times higher than with sole NO mg-N/L. This suggested when treating multiple , only relatively improve efficiency, but also alleviate emissions. The abundance Bacteroidota Comamonadaceae ensured stable release conversion states.

Язык: Английский

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A comprehensive review on mixotrophic denitrification processes for biological nitrogen removal

Chemosphere, Год журнала: 2022, Номер 313, С. 137474 - 137474

Опубликована: Дек. 6, 2022

Язык: Английский

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Enhanced Volatile Fatty Acid Production from Food Waste Fermentation via Enzymatic Pretreatment: New Insights into the Depolymerization and Microbial Traits

ACS ES&T Engineering, Год журнала: 2022, Номер 3(1), С. 26 - 35

Опубликована: Ноя. 8, 2022

Food waste (FW) has been considered a potential carbon reservoir and can be used for high-value volatile fatty acid (VFA) production via anaerobic fermentation. Nevertheless, more work is needed to unravel how regulate the structural defects of FW enhance microbial metabolisms improving VFA through pretreatment methods. This investigated enhancement from fermentation enhancing depolymerization stimulating traits enzymatic pretreatment. The results exhibited that, after pretreatment, was improved by 50.1% compared unpretreated group, concentrations bioavailable substrates (e.g., reducing sugar soluble chemical oxygen demand) increased significantly. Further analysis proved that could highly reduce particle sizes 69.3% thus promoted solubilization lipids. Meanwhile, ratio α-helix/(β-sheet + random coil) in protein secondary structure decreased 0.32 0.23 indicating process accelerated depolymerization. Furthermore, organic were favorable enriching bacteria involved hydrolysis acidification Olsenella sp. Sporanaerobacter sp.), upregulating gene expressions hydrolysis, pyruvate metabolism, biosynthesis malZ, PK, accA, accC), activities acetate butyrate formation AK, PTA, BK, PTB), which accordance with enhanced generation

Язык: Английский

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Autotrophic denitrification using Fe(II) as an electron donor: A novel prospective denitrification process

The Science of The Total Environment, Год журнала: 2022, Номер 858, С. 159721 - 159721

Опубликована: Окт. 25, 2022

Язык: Английский

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