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All organisms require nitrogen to live and grow. The movement of nitrogen between the atmosphere, biosphere, and geosphere in different forms is described by the nitrogen cycle. This book is an activity of the COST 856 Action on Denitrification. It covers all aspects of the N-cycle: chemistry, biology (enzymology, molecular biology), physics, applied aspects (greenhouse effect, N-pollution problems, practices in farming, in waste-water treatment, and more). In this book, leading editors offer the latest research available on dentrification (reduction of nitrates or nitrites commonly by bacteri

Nitrogen cycle. --- Denitrification. --- Reduction (Chemistry) --- Denitrifying bacteria --- Nitrification --- Biogeochemical cycles

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Nitrification and denitrification are essential processes for aquatic ecological system and vital for human health. While ammonia is applied for disinfection together with chlorine to produce chloramine, excessive ammonia may cause nitrification and bacteria growth in water transmission pipeline. Since excessive discharge may cause eutrophication and deterioration of aquatic system, nitrate is regulated for wastewater discharge in sensitive areas. Further, nitrate needs to be monitored and controlled in drinking water treatment to protect against methemoglobinemia in bottle-fed infants.

Nitrification. --- Denitrification. --- Reduction (Chemistry) --- Denitrifying bacteria --- Nitrification --- Oxidation --- Denitrification --- Nitrifying bacteria --- Physical Sciences --- Engineering and Technology --- Chemistry --- Solid-State Chemistry --- Organic Chemistry

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Dénitrification --- Denitrification --- Métabolisme de l'azote --- Nitrogen metabolism --- Transport dans le sol --- soil transport processes --- Propriété physicochimique du sol --- soil chemicophysical properties --- Bacteria, Denitrifying --- Denitrifying bacteria --- Nitrification --- Nitrogen cycle --- Congresses. --- Bacteria [Denitrifying ] --- Congresses --- Denitrification.

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This book systematically investigates the nitrogen removal characteristics of two screened aerobic denitrifying bacteria and their applications in nitrogen oxides emissions reduction. It reveals that Pseudomonas stutzeri PCN-1 possesses excellent capacity for aerobic nitrogen removal, regardless of whether nitrate, nitrite or N2O were taken as denitrification substrates. It also demonstrates that the rapid N2O reduction is due to the coordinate expression of denitrification genes. Further, the book discusses the bioaugmentation experiments conducted in denitrifying SBR and a pilot-scale Carrousel oxidation ditch, which confirmed that the strain could significantly enhance denitrification performance, reduce N2O emission and improve system stability. The second strain, P.aeruginosa PCN-2 accumulated negligible NO during aerobic nitrate and nitrite removal and efficiently removed NO from flue gas. This study is of great significance for potential applications of aerobic denitrification in mitigating nitrogen oxides emissions from biological nitrogen removal systems.

Denitrification. --- Denitrifying bacteria. --- Biotechnology. --- Climatic changes. --- Environmental pollution. --- Environmental Engineering/Biotechnology. --- Climate Change. --- Environmental Science and Engineering. --- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution. --- Chemical pollution --- Chemicals --- Contamination of environment --- Environmental pollution --- Pollution --- Contamination (Technology) --- Asbestos abatement --- Bioremediation --- Environmental engineering --- Environmental quality --- Factory and trade waste --- Hazardous waste site remediation --- Hazardous wastes --- In situ remediation --- Lead abatement --- Pollutants --- Refuse and refuse disposal --- Changes, Climatic --- Changes in climate --- Climate change --- Climate change science --- Climate changes --- Climate variations --- Climatic change --- Climatic changes --- Climatic fluctuations --- Climatic variations --- Global climate changes --- Global climatic changes --- Climatology --- Climate change mitigation --- Teleconnections (Climatology) --- Chemical engineering --- Genetic engineering --- Environmental aspects --- Environmental engineering. --- Climate change. --- Environmental sciences. --- Water pollution. --- Aquatic pollution --- Fresh water --- Fresh water pollution --- Freshwater pollution --- Inland water pollution --- Lake pollution --- Lakes --- Reservoirs --- River pollution --- Rivers --- Stream pollution --- Water contamination --- Water pollutants --- Water pollution --- Waste disposal in rivers, lakes, etc. --- Environmental science --- Science --- Environmental control --- Environmental effects --- Environmental stresses --- Engineering --- Environmental health --- Environmental protection --- Sustainable engineering --- Global environmental change