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Papers
61,005 resultsShowing papers similar to Feammox Bacterial Biofilms as an Alternative Biological Process for the Removal of Nitrogen from Agricultural Wastewater
ClearAnammox-MBR Technology: Breakthroughs and Challenges in Sustainable Nitrogen Removal from Wastewater
This review covers recent advances in combining anaerobic ammonium oxidation (anammox) with membrane bioreactor (MBR) technology for sustainable nitrogen removal from wastewater, emphasizing energy efficiency and potential for reducing nitrous oxide greenhouse gas emissions.
Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment
This review summarizes advances in the microbial communities involved in nitrogen removal from wastewater, covering nitrification, denitrification, and newer processes such as anammox. Understanding these microbiota is essential for improving biological treatment strategies to address excess nitrogenous pollutants in aquatic ecosystems.
Effect of Fe3+ on the nutrient removal performance and microbial community in a biofilm system
Researchers examined how iron (Fe3+) affects nutrient removal performance and microbial community structure in a wastewater treatment system, finding that iron addition altered both nitrogen/phosphorus removal efficiency and the composition of the microbial community. The results have implications for optimizing iron dosing in treatment processes.
Application of biofilm-membrane bioreactor in municipal wastewater treatment
Researchers designed and tested a biofilm-membrane bioreactor system for municipal wastewater treatment, using a Fourier series algorithm to model performance against COD and ammonium nitrogen removal metrics. The system achieved stable COD removal of approximately 83% and NH4+-N removal of 85-90%, demonstrating its feasibility for municipal wastewater treatment applications.
Nitrogen removal in recirculating aquaculture water with high dissolved oxygen conditions using the simultaneous partial nitrification, anammox and denitrification system
Researchers operated a simultaneous nitrification-anammox-denitrification bioreactor on aquaculture wastewater for 180 days without supplemental carbon, achieving near-complete nitrogen removal under high oxygen conditions by harnessing Pseudoxanthomonas bacteria and coordinated microbial nitrogen-cycling communities in a biofilm.
Insight Into the Factors Inhibiting the Anammox Process in Wastewater
This review examines the factors that inhibit the anaerobic ammonium oxidation (anammox) process used for biological nitrogen removal in wastewater treatment. The authors assess how substrates, organic matter, salts, heavy metals, phosphate, and sulfide suppress anammox activity and summarize strategies to mitigate these inhibitory effects in practical applications.
Algal-Based Hollow Fiber Membrane Bioreactors for Efficient Wastewater Treatment: A Comprehensive Review
This comprehensive review examines algal-based hollow fiber membrane bioreactors as a sustainable technology for wastewater treatment. The study highlights how integrating algae with membrane filtration systems can efficiently treat various water pollutants while offering potential benefits for nutrient recovery and biomass production.
Enhanced Microbial Oxidation–Neutralization Treatment of Acid Mine Drainage Rich in Ferrous Ions (Fe2+)
An enhanced packed-bed bioreactor using iron-oxidizing bacteria was tested for treating acid mine drainage with high ferrous iron concentrations. The system efficiently oxidized ferrous to ferric iron, enabling subsequent precipitation of iron from the treated water. Biological treatment of acid mine drainage is a lower-cost alternative to chemical methods for managing pollution from mining operations.
Toxic effects of nanoplastics on biological nitrogen removal in constructed wetlands: Evidence from iron utilization and metabolism
Researchers found that nanoplastics in wastewater disrupt biological nitrogen removal in constructed wetlands by interfering with intracellular iron homeostasis, which cripples the key enzymes and electron transport chains that microbes use for nitrogen metabolism, reducing nitrogen removal efficiency by about 30%.
Enhancing algal growth and nutrient recovery from anaerobic digestion piggery effluent by an integrated pretreatment strategy of ammonia stripping and flocculation
Researchers developed an integrated pretreatment combining ammonia stripping and chemical flocculation that enabled efficient microalgae cultivation on piggery wastewater, achieving over 95% nitrogen removal and maximum algal yield without the high dilution typically required.
An efficient anoxic/aerobic/aerobic/anoxic process for domestic sewage treatment: From feasibility to application
An anoxic-aerobic-aerobic-anoxic process using fixed biofilms was developed for domestic sewage treatment without sludge recycling, tested over 190 days. The reactor achieved effective nitrogen and carbon removal under optimal conditions. Fixed biofilm reactors offer a simpler and potentially lower-cost alternative to conventional activated sludge systems.
How anammox responds to the emerging contaminants: Status and mechanisms
This review synthesizes research on how emerging contaminants including antibiotics, nanomaterials, heavy metals, and microplastics affect anammox bacteria used in wastewater nitrogen removal, identifying inhibition thresholds and possible recovery mechanisms.
A review of microplastics on anammox: Influences and mechanisms
This review summarizes how microplastics affect anammox, a key biological process used in wastewater treatment to remove nitrogen. Microplastics disrupt the microbial communities that perform this process, reducing treatment efficiency depending on plastic concentration, size, and type. Since wastewater treatment is a critical barrier preventing pollutants from reaching drinking water sources, any reduction in treatment performance could increase human exposure to contaminants.
Biosorption removal of iron from water by Aspergillus niger
Researchers tested dried biomass from the common mold Aspergillus niger as a low-cost biological filter to remove excess iron from wastewater, finding it most effective at acidic conditions with high biomass concentration. This biosorption approach offers an environmentally friendly alternative to chemical iron removal, and the mold material can be regenerated and reused multiple times.
Fabrication of a Sulfur/Steel Slag-Based Filter and Its Application in the Denitrification of Nitrate-Containing Wastewater
Researchers fabricated a sulfur/steel slag-based filter using a melt granulation method and evaluated its performance for denitrification of nitrate-containing wastewater, finding it effectively removed nitrogen through combined physical and chemical mechanisms. The study demonstrates a dual-benefit approach that addresses deep nitrogen removal in wastewater treatment while valorizing metallurgical steel slag waste.
Impacts of Microplastics on Anammox Systems: A Comprehensive Review of Mechanisms and Influences
This review examines how microplastics affect anammox wastewater treatment systems, which are used for biological nitrogen removal. The study found that low concentrations of microplastics can actually enhance system performance by acting as biofilm carriers, while high concentrations inhibit the process through physical clogging, toxic effects, and oxidative stress.
Review of emerging technologies for nutrient removal in wastewater treatment
This review summarizes emerging technologies for removing excess nitrogen and phosphorus from wastewater, including advanced biological, membrane, and chemical oxidation methods. While focused on nutrient removal, many of these same technologies also show promise for filtering out microplastics from water. Improving wastewater treatment is critical because treatment plants are a major pathway through which microplastics enter rivers, lakes, and eventually drinking water sources.
The Design of a Sustainable Industrial Wastewater Treatment System and The Generation of Biohydrogen from E. crassipes
Researchers designed a sustainable industrial wastewater treatment system for a specific industrial process, evaluating treatment train configurations for removing target contaminants while minimizing energy consumption and sludge generation. The optimized design achieved regulatory compliance for effluent quality while reducing operational costs compared to the existing system.
Environmental Performance of Nitrogen Recovery from Reject Water of Sewage Sludge Treatment Based on Life Cycle Assessment
This study used life cycle assessment to evaluate nitrogen recovery from sewage sludge reject water via air stripping and biochar adsorption, finding that both methods can reduce environmental impacts compared to conventional fossil-based fertilizer production.
From Waste to Resource: Algal–Bacterial Systems and Immobilization Techniques in Aquaculture Effluent Treatment
This review examines algal-bacterial symbiotic systems combined with microbial immobilization techniques as sustainable alternatives for treating aquaculture wastewater containing nitrogen, phosphorus, antibiotics, and heavy metals, with emphasis on simultaneous pollutant removal and biomass valorization.
Magnetic confinement-enabled membrane reactor for enhanced removal of wide-spectrum contaminants in water: Proof of concept, synergistic decontamination mechanisms, and sustained treatment performance
Researchers engineered a hollow-fiber membrane reactor using magnetically confined zerovalent iron nanocatalysts arranged in forest-like arrays, achieving simultaneous removal of large nanoplastics via size exclusion and up to 765-fold faster degradation of organic contaminants (bisphenol A) and phosphate compared to conventional systems.
Biosynthesis of Iron Oxide Nanoparticles and Using it to Support the Efficiency of Wastewater Filtration System
Researchers biosynthesized iron oxide nanoparticles (IONPs) using Escherichia coli isolated from wastewater in Mosul City, characterized the nanoparticles using UV-Vis spectroscopy, SEM, AFM, XRD, and FTIR, and applied them to a lab-scale dual filtration wastewater treatment system. The IONP-coated filters demonstrated improved wastewater treatment efficiency compared to control filters without nanoparticle coatings.
Optimization of Micro-Pollutants’ Removal from Wastewater Using Agricultural Waste-Derived Sustainable Adsorbent
Agricultural waste-derived biochar adsorbent was optimized for removing polycyclic aromatic hydrocarbons from industrial wastewater, with the study presenting the first use of this specific waste-derived material to address PAH contamination in water.
Insights into the removal of gaseous oxytetracycline by combined ozone and membrane biofilm reactor
Researchers developed a combined ozone and membrane biofilm reactor system for treating gaseous oxytetracycline emitted from livestock manure composting, achieving high removal efficiency through synergistic oxidation and biodegradation mechanisms.