Transition from sulfur autotrophic to mixotrophic denitrification: performance with different carbon sources, microbial community and artificial neural network modeling

Chemosphere, Год журнала: 2024, Номер unknown, С. 143432 - 143432

Опубликована: Сен. 1, 2024

Язык: Английский

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Simultaneous occurrence of sulfate reduction and nitrate reduction in solid-phase denitrification system

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160570 - 160570

Опубликована: Фев. 1, 2025

Язык: Английский

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Pyrite and PHBV combined as substrates for groundwater denitrification

Environmental Technology, Год журнала: 2025, Номер unknown, С. 1 - 14

Опубликована: Апрель 5, 2025

Nitrate pollution in groundwater has steadily increased globally, posing a potential threat to human health. Introduction of exogenous electron donors can significantly enhance nitrogen removal from nitrate-contaminated groundwater. Yet, conventional individual autotrophic or heterotrophic denitrification approaches have the disadvantage low efficiency high cost. This study investigated performance laboratory-scale solid-phase (SPD) permeable reactive barrier (PRB) using polyhydroxybutyrate-co-valerate (PHBV)/pyrite mixture as an donor for denitrification. Two different mass ratios (1:1 and 1:2) were established experimental setup. The results showed that under influent levels between 20 37 mg·L-1, PHBV/pyrite system at ratio 1:1 achieved maximum nitrate 97.03%, with rate 99.13 mg NO3--N NO3--N·L-1·d-1. Moreover, 1:2 reached 97.65% 111.04 NO3--N·L-1·d-1 terms optimum rate. Dissolved organic carbon was undetectable effluent both systems. superior one 1:1, implying appropriate addition pyrite mixtrophic systems could Additionally, dominant genera identified respectively Cloacibacterium Acinetobacter two systems, indicating varying modulate succession nitrogenremoving microorganisms. Specifically, favoured aerobic microbial growth, thereby enhancing biological removal. findings provided valuable alternative in-situ remediation nitrate-polluted

Язык: Английский

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Calcined pyrite accelerates sulfur metabolic and electron transfer in driving targeted microbial fuel cell denitrification

Bioresource Technology, Год журнала: 2024, Номер 410, С. 131285 - 131285

Опубликована: Авг. 14, 2024

Язык: Английский

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Promoting heterotrophic denitrification of Pseudomonas hunanensis strain PAD-1 using pyrite: A mechanistic study

Environmental Research, Год журнала: 2023, Номер 234, С. 116591 - 116591

Опубликована: Июль 7, 2023

Язык: Английский

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