Nitrogen removal
Investigations of nitrogen removal pathways in a biological packed bed reactor using elementary mass balances
... the nitrogen transformations occurring in the aerobic BPB reactor are complex and cannot be explained by simple mechanisms of microbial assimilation and ...to nitrogen removal in biofilm systems, but ...
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Nitrogen removal from swine wastewater by combining treated effluent with raw manure
... managed. Nitrogen (N) is usually the main element present at high concentrations in the ...N removal at low cost via denitrification may be possible by recirculating nitrified effluent in the ...oxidized ...
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Effects of different aeration rate and oxygen concentrations on nitrogen removal of old waste in lab-scale simulated bioreactors landfill
... ammonium nitrogen. Better alternatives, in terms of nitrogen removal, were obtained with simulated aerobic bioreactor ...ammonium nitrogen removal in the leachate on the most aerated ...
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EFFECT OF CYCLE TIME AND AIRFLOW IN BIOLOGICAL NITROGEN REMOVAL FROM POULTRY SLAUGHTERHOUSE WASTEWATER USING SEQUENCING BATCH REACTOR
... biological nitrogen removal by composed systems, such as sequencing batch reactors (SBR), contemplates aerobic and anoxic stages with sequencing operations throughout the ...ammoniacal nitrogen to ...
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Conventional and new concepts of biological treatment processes for the nitrogen removal from wastewater
... bodies. Nitrogen removal is usually accomplished through sequential nitrification and denitrification processes, by nitrification under aerobic conditions plus denitrification under anoxic ...biological ...
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The physiological and biochemical mechanism of nitrate- nitrogen removal by water hyacinth from agriculture eutrophic wastewater
... The water hyacinth with same size was weighted and they were processed for one week according to the method below. After the processing, residuewhich produced from 50 ml sample of agriculture eutrophic wastewater after ...
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Lacustrine wetland in an agricultural catchment: nitrogen removal and related biogeochemical processes
... Abstract. The role of specific catchment areas, such as the soil-river or lake interfaces, in removing or buffering the flux of N from terrestrial to aquatic ecosystems is globally recog- nized but the extreme ...
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Estimating seasonal nitrogen removal and biomass yield by annuals with the extended logistic model.
... Effective water and nutrient management plays an essential role in future attempts at sustainable agricultural production. As the world’s population continues to grow, the potable water supply is limited and must be ...
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Avanços na remoção biológica de nitrogênio das águas residuais: uma revisão RESUMO
... biological nitrogen removal, including process design criteria and technological ...common nitrogen removal process used nowadays, a new design equation for the denitrification reactor based ...
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Braz. J. Chem. Eng. vol.31 número1
... and nitrogen removal with and without the addition of external carbon (a concen- trated solution of glucose, 5000 mg/L) were investi- ...COD removal effi- ciency during the glucose addition phase was ...
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Braz. J. Chem. Eng. vol.31 número3
... and nitrogen removal and the influence on membrane fouling were ...matter removal, no statistically significant differences were observed between C-MBR and BF-MBR, producing an effluent with a ...
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art fsbmota treatment
... total nitrogen removal was achieved using a nitrification/denitrification process, aeration and an external organic carbon source are ...traditional nitrogen removal process (Jetten et ...to ...
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Braz. J. Chem. Eng. vol.29 número2
... This study investigates the feasibility of short-cut nitrification with a low DO concentration as a parameter conducive to maximizing nitrite accumulation and denitrification. An external carbon source is introduced to ...
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Impact of aeration conditions on the removal of low concentrations of nitrogen in a tertiary partially aerated biological filter
... of nitrogen compounds to soil and waters may adversely affect water resources in several ways including contri- bution to eutrophication, depletion of oxygen, toxicity to aquatic environment and public health ...
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Effect of sorghum tannins in sheep fed with high-concentrate diets
... The diets formulated from sorghum cultivars with higher concentrations of condensed tannins resulted in lower nitrogen use by the sheep. However, no decrease in the microbial nitrogen supply for intestinal ...
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Nitrate-Nitrogen Content in Soil and Lysimeter Water under Different Nitrogen Fertilization Levels in Crop Production
... crop management based upon spatial variation of NO 3 -N content can maximize crop production and minimized environmental impacts of N fertilization (Abu and Malgwi, 2011). Jurisic et al. (2013) determined that the long ...
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Nitrogenous compounds balance and microbial protein synthesis in steers supplemented with sunflower crushed in partial replacement of soybean meal
... ØRSKOV, E. R.; MACLEOD, N. A. The determination of the minimal nitrogen excretion in steers and dairy cows and physiological and practical implications. British Journal of Nutrition, v. 47, n. 3, p. 625-636, 1982. ...
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Changes in soil quality after converting <i>Pinus</i> to <i>Eucalyptus</i> plantations in southern China
... total nitrogen, alkaline hydrolytic nitrogen, microbial biomass carbon, microbial biomass nitrogen, cellobiosidase, phenol oxidase, peroxidase and acid phosphatase activities were significantly lower ...
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Bioprocesses for removal of carbon dioxide and nitrogen oxide by microalgae for the utilization of gas generated during coal burning.
... FOR REMOVAL OF CARBON DIOXIDE AND NITROGEN OXIDE BY MICROALGAE FOR THE UTILIZATION OF GAS GENERATED DURING COAL ...the removal of CO 2 and NO by microalgae and to evaluate the kinetic characteristics ...
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Mimosa caesalpiniifolia intercropping, weeds removal and nitrogen
... The removal of weeds after each of the two hoeings is not beneficial to the maize for such characteristics as the number of marketable husked and non- husked ears (Table 3) and the weight of marketable non-husked ...
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