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

---

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

---

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

---

Microbial mixotrophic denitrification using iron(II) as an assisted electron donor

Water Research X, Год журнала: 2023, Номер 19, С. 100176 - 100176

Опубликована: Март 21, 2023

Mixotrophic denitrification processes have a great potential in nitrogen removal biological wastewater treatment processes. However, so far, few studies focused on the mixotrophic system using Fe(II) as an exclusively assisted electron donors and underlying mechanisms such process remain unclear. Furthermore, by which microorganisms cover carbon, nitrogen, phosphorus iron iron-assisted unrevealed. In this work, we explore feasibility of donor for enhancing simultaneous via long-term reactor operation batch tests. The results show that could provide electrons efficient nitrate reduction reactions played predominant role these systems. systems Thermomonas, strain nitrate-reduction Fe(II)-oxidation bacterium, was enriched accounted maximum abundance 60.2%. These findings indicate Fe(II)-assisted practical use process.

Язык: Английский

---

Engineering-scale application of sulfur-driven autotrophic denitrification wetland for advanced treatment of municipal tailwater

Bioresource Technology, Год журнала: 2023, Номер 379, С. 129035 - 129035

Опубликована: Апрель 8, 2023

Язык: Английский

---

Succession of microbial communities reveals the inevitability of anammox core in the development of anammox processes

Bioresource Technology, Год журнала: 2023, Номер 371, С. 128645 - 128645

Опубликована: Янв. 18, 2023

Язык: Английский

---

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

---

Research advances in application of mainstream anammox processes: Roles of quorum sensing and microbial metabolism

Chemosphere, Год журнала: 2023, Номер 333, С. 138947 - 138947

Опубликована: Май 15, 2023

Язык: Английский

---

Research progress and prospect of low-carbon biological technology for nitrate removal in wastewater treatment

Frontiers of Environmental Science & Engineering, Год журнала: 2024, Номер 18(7)

Опубликована: Март 25, 2024

Abstract Wastewater treatment plants are the major energy consumers and significant sources of greenhouse gas emissions, among which biological nitrogen removal wastewater is an important contributor to carbon emissions. However, traditional heterotrophic denitrification still has problems excessive residual sludge requirement external sources. Consequently, development innovative low-carbon nitrate technologies necessary. This review outlines key roles sulfur autotrophic hydrogen in treatment. The discovered nitrate/nitrite dependent anaerobic methane oxidation enables sustainable emission reduction by utilizing available situ . Photosynthetic microorganisms exhibited a promising potential achieve carbon-negative removal. Specifically, algal-bacterial symbiosis system photogranules offer effective prospective options for Then, emerging technology photoelectrotrophic underlying photoelectron transfer mechanisms discussed. Finally, we summarize prospect these technologies, highlighting that solar-driven area future guiding significance design systems.

Язык: Английский

---

Application of pilot-scale two-stage ZVI-based biofilter for advanced nitrogen and phosphorus removal from the actual secondary effluent under high DO conditions: Focusing on the effect of DO on electron transfer and Fe cycle

Journal of Cleaner Production, Год журнала: 2025, Номер unknown, С. 144892 - 144892

Опубликована: Янв. 1, 2025

Язык: Английский

---