Water Research, Journal Year: 2023, Volume and Issue: 235, P. 119932 - 119932
Published: March 29, 2023
Language: Английский
Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(11), P. 4522 - 4532
Published: March 10, 2023
Chemically enhanced primary treatment (CEPT) followed by partial nitritation and anammox (PN/A) anaerobic digestion (AD) is a promising roadmap to achieve energy-neutral wastewater treatment. However, the acidification of caused ferric hydrolysis in CEPT how stable suppression nitrite-oxidizing bacteria (NOB) PN/A challenge this paradigm practice. This study proposes novel scheme overcome these challenges. Results showed that, dosing FeCl3 at 50 mg Fe/L, process removed 61.8% COD 90.1% phosphate reduced alkalinity as well. Feeding low wastewater, nitrite accumulation was achieved an aerobic reactor operated pH 4.35 aided acid-tolerant ammonium-oxidizing (AOB), namely, Candidatus Nitrosoglobus. After polishing following anoxic (anammox), satisfactory effluent, containing 41.9 ± 11.2 mg/L, total nitrogen 5.1 1.8 N/L, 0.3 0.2 P/L, achieved. Moreover, performances integration were well maintained operating temperature 12 °C, 10 investigated micropollutants from wastewater. An energy balance assessment indicated that integrated system could self-sufficiency domestic
Language: Английский
Citations
72
Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(34), P. 12557 - 12570
Published: Aug. 17, 2023
Microbial nitrite oxidation is the primary pathway that generates nitrate in wastewater treatment systems and can be performed by a variety of microbes: namely, nitrite-oxidizing bacteria (NOB). Since NOB were first isolated 130 years ago, understanding phylogenetical physiological diversities has been gradually deepened. In recent endeavors advanced biological nitrogen removal, have more considered as troublesome disruptor, strategies on suppression often fail practice after long-term operation due to growth specific are able adapt even harsh conditions. line with review history currently known genera, phylogenetic tree constructed exhibit wide range different phyla. addition, behavior metabolic performance strains summarized. These features various (e.g., high oxygen affinity
Language: Английский
Citations
61
Renewable and Sustainable Energy Reviews, Journal Year: 2023, Volume and Issue: 184, P. 113547 - 113547
Published: July 12, 2023
Language: Английский
Citations
50
Nature Sustainability, Journal Year: 2024, Volume and Issue: 7(11), P. 1395 - 1404
Published: Sept. 9, 2024
Language: Английский
Citations
30
Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 447, P. 141542 - 141542
Published: March 3, 2024
Polyhydroxyalkanoate (PHA) is a biodegradable biopolymer synthesized from renewable resources, providing sustainable and eco-friendly plastics. The utilization of activated sludge for PHA production has gained prominence due to its cost-effectiveness abundant availability. Upscaling can contribute waste management resource recovery simultaneously, thereby reducing the dependence on petroleum-based This review critically examines progress challenges in this field, while offering valuable insights into strategies enhancing productivity, improving product quality, costs. analysis primarily focuses identifying key factors influencing each stage three-stage process aimed at increasing productivity. Noteworthy proposed include optimizing enrichment feast/famine ratio. For high-quality PHA, emphasis oriented acid production, selection appropriate extraction methods crucial. also addresses cost reduction, discussing simplification through two-stage process, integration nitrogen removal with production. Future research directions are outlined, highlighting optimization scalability development efficient methods, assessment environmental impacts, alignment policy measures. Conclusively, sludge-based shows great promise necessitates further industrialization.
Language: Английский
Citations
27
Water Research, Journal Year: 2024, Volume and Issue: 252, P. 121209 - 121209
Published: Jan. 27, 2024
Language: Английский
Citations
20
Environmental Research, Journal Year: 2023, Volume and Issue: 236, P. 116770 - 116770
Published: July 28, 2023
Language: Английский
Citations
35
Water Research, Journal Year: 2023, Volume and Issue: 247, P. 120754 - 120754
Published: Oct. 18, 2023
Membrane aerated biofilm reactor (MABR) and shortcut nitrogen removal are two types of solutions to reduce energy consumption in wastewater treatment, with the former improving aeration efficiency latter reducing oxygen demand. However, integrating these solutions, i.e., achieving MABR, is challenging due difficulty suppressing nitrite-oxidizing bacteria (NOB). In this study, four MABRs were established demonstrate feasibility initiating, maintaining, restoring NOB suppression using low dissolved (DO) control, presence absence anammox bacteria, respectively. Long-term results revealed that strict DO (< 0.1 mg/L) MABR could initiate maintain stable for more than five months nitrite accumulation ratio above 90%, but it was unable re-suppress once they prevailed. Moreover, increased threshold level MABRs, still incapable restore deteriorated conjunction control. Mathematical modelling confirmed experimental further explored differences conventional biofilms biofilms. Simulation showed compared biofilms, regardless thickness or influent concentration. Kinetic mechanisms different proposed, suggesting difficult wash out developed innermost layer because high sludge wasting rate. summary, study systematically demonstrated challenges through both experiments mathematical modelling. These findings provide valuable insights into applications call studies developing effective strategies achieve energy-efficient configuration.
Language: Английский
Citations
30
Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(51), P. 21503 - 21526
Published: Dec. 14, 2023
Innovation in decarbonizing wastewater treatment is urgent response to global climate change. The practical implementation of anaerobic ammonium oxidation (anammox) treating domestic the key reconciling carbon-neutral management with sustainable development. Nitrite availability prerequisite anammox reaction, but how achieve robust nitrite supply and accumulation for mainstream systems remains elusive. This work presents a state-of-the-art review on recent advances anammox, paying special attention available pathways (forward-going (from nitrite) backward-going nitrate nitrite)), controlling strategies, physiological ecological characteristics functional microorganisms involved supply. First, we comprehensively assessed nitrite-oxidizing bacteria control methods, outlining that these technologies are transitioning possessing multiple selective pressures (such as intermittent aeration membrane-aerated biological reactor), integrating side stream free ammonia/free nitrous acid suppression recirculated sludge treatment), maintaining high activity ammonia-oxidizing competing oxygen bacteria. We then highlight emerging strategies supply, including production driven by novel microbes (ammonia-oxidizing archaea complete ammonia bacteria) reduction (partial denitrification nitrate-dependent methane oxidation). resources requirement different analyzed, hybrid pathway combining partial nitrification encouraged. Moreover, data-driven modeling process well proactive microbiome proposed hope achieving application. Finally, existing challenges further perspectives highlighted, i.e., investigation nitrite-supplying bacteria, scaling-up from laboratory under real conditions, stable performance fundamental insights this aim inspire advance our understanding about provide robustly shed light important obstacles warranting settlement.
Language: Английский
Citations
30
Water Research, Journal Year: 2023, Volume and Issue: 243, P. 120326 - 120326
Published: July 8, 2023
Language: Английский
Citations
28