Microbially driven Fe-N cycle: Intrinsic mechanisms, enhancement, and perspectives

The Science of The Total Environment, Год журнала: 2023, Номер 908, С. 168084 - 168084

Опубликована: Ноя. 2, 2023

Язык: Английский

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Aerobic Denitrification Enhanced by Immobilized Slow-Released Iron/Activated Carbon Aquagel Treatment of Low C/N Micropolluted Water: Denitrification Performance, Denitrifying Bacterial Community Co-occurrence, and Implications

Environmental Science & Technology, Год журнала: 2023, Номер 57(13), С. 5252 - 5263

Опубликована: Март 21, 2023

The key limiting factors in the treatment of low C/N micropolluted water bodies are deficient essential electron donors for nitrogen removal processes. An iron/activated carbon aquagel (IACA) was synthesized as a slowly released inorganic donor to enhance aerobic denitrification performance treatment. efficiency IACA reactors enhanced by more than 56.72% and highest 94.12% accomplished compared with those control reactors. Moreover, CODMn improved 34.32% Illumina MiSeq sequencing consequence explained that denitrifying bacteria facultative denitrification, iron oxidation, reduction function were located dominant species niches (e.g., Pseudomonas, Leptothrix, Comamonas). diversity richness bacterial communities Network analysis indicated consortia presented complicated co-occurrence structure. potential long-term operation. This study affords pathway utilize IACA, promoting during body

Язык: Английский

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Metal Doped Unconventional Phase IrNi Nanobranches: Tunable Electrochemical Nitrate Reduction Performance and Pollutants Upcycling

Environmental Science & Technology, Год журнала: 2024, Номер 58(24), С. 10863 - 10873

Опубликована: Июнь 6, 2024

Electrochemical nitrate reduction (NO3RR) provides a new option to abate contamination with low carbon footprint. Restricted by competitive hydrogen evolution, achieving satisfied performance in neutral media is still challenge, especially for the regulation of this multielectron multiproton reaction. Herein, facile element doping adopted tune catalytic behavior IrNi alloy nanobranches an unconventional hexagonal close-packed (hcp) phase toward NO3RR. In particular, obtained hcp IrNiCu favor ammonia production and suppress byproduct formation electrolyte indicated situ differential electrochemical mass spectrometry, high Faradaic efficiency (FE) 85.6% large yield rate 1253 μg cm–2 h–1 at −0.4 −0.6 V (vs reversible electrode (RHE)), respectively. contrast, resultant IrNiCo promote nitrite, peak FE 33.1% −0.1 RHE). Furthermore, hybrid electrolysis cell consisting NO3RR formaldehyde oxidation constructed, which are both catalyzed nanobranches. This electrolyzer exhibits lower overpotential holds potential treat polluted air wastewater simultaneously, shedding light on green chemical based contaminate degradation.

Язык: Английский

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Lumen air pressure regulated multifunctional microbiotas in membrane-aerated biofilm reactors for simultaneous nitrogen removal and antibiotic elimination from aquaculture wastewater

Water Research, Год журнала: 2024, Номер 251, С. 121102 - 121102

Опубликована: Янв. 6, 2024

Язык: Английский

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Enhanced nitrogen removal through aerobic denitrifying bacteria in horizontal subsurface flow constructed wetlands: Influencing factors and microbial community structure

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148654 - 148654

Опубликована: Янв. 8, 2024

Язык: Английский

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Roles of Fe(II), Fe(III) and Fe0 in denitrification and anammox process: Mechanisms, advances and perspectives

Journal of Water Process Engineering, Год журнала: 2023, Номер 53, С. 103746 - 103746

Опубликована: Апрель 28, 2023

Язык: Английский

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The advance of heterotrophic nitrification aerobic denitrification microorganisms in wastewater treatment

Bioresource Technology Reports, Год журнала: 2023, Номер 22, С. 101495 - 101495

Опубликована: Июнь 1, 2023

Язык: Английский

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Resource utilization of carbon dioxide and nitrate to produce value-added organonitrogen compounds through an electrochemical approach

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 341, С. 123292 - 123292

Опубликована: Сен. 16, 2023

Язык: Английский

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Tracing and utilizing nitrogen loss in wastewater treatment: The trade-off between performance improvement, energy saving, and carbon footprint reduction

Journal of Environmental Management, Год журнала: 2023, Номер 349, С. 119525 - 119525

Опубликована: Ноя. 9, 2023

Язык: Английский

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Strategies for ammonia recovery from wastewater: a review

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(6), С. 2699 - 2751

Опубликована: Авг. 23, 2024

Abstract The circular economy requires advanced methods to recycle waste matter such as ammonia, which can be further used a fuel and precursor of numerous value-added chemicals. Here, we review for the recovery ammonia from wastewater with emphasis on biological physicochemical techniques, their applications. Biological techniques involve nitrification, denitrification, anammox processes use membrane bioreactors. Physicochemical comprise adsorption, filtration, ion exchange, chemical precipitation, stripping, electrochemical oxidation, photocatalytic bioelectrochemical systems, hybrid systems. We found that nitrification in bioreactors stand out cost-effectiveness, reduced sludge production, energy efficiency. struvite precipitation is an efficient, environmentally friendly, recyclable method removal. Membrane systems are promising recovery, nutrient concentration, treatment, applications fertilizer production water purification. Overall, nitrogen removal ranges 28 100%, 9 100%.

Язык: Английский

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