ammonia emissions Articles
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Empirical results and experiences for the estimation of selected nitrogen abatement cost curves in Germany
Empirical results of the calculation of pollution abatement cost curves (ACCs) for different nitrogen compounds are presented for the German economy (1990 database). An evaluation is made of the extent to which the empirical work fits to the theoretical framework and the calculation procedure for ACCs described by Radermacher, Riege-Wcislo and Heinze elsewhere in this issue. The actual data ...
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Ammonia emissions from field-simulated cattle defecation and urination
Received for publication January 11, 2008. Atmospheric ammonia (NH3) is a concern because of its environmental impact. The greatest contribution to atmospheric NH3 comes from agricultural sources. This study quantified NH3 volatilization from cattle defecation and urination on pasture under field conditions in Auburn, Alabama. Treatments consisted of beef feces, dairy feces, dairy urine, and a ...
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Slurry acidification at Lauku Agro has begun - science is up next
Slurry acidification has officially begun at Lauku Agro farm in Latvia.. The milestone was marked by an inauguration event where. stakeholders and other interested parties gathered to see the recently. acquired slurry acidification equipment. Slurry Acidification Techniques (SATs) can be divided to in-house, in-storage and in-field techniques. As a part of the investment plan of the Baltic ...
By Biocover A/S
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EPA Increases Ammonia Emissions Control
Concern about ammonia emissions in the air and the water continues to grow, both officially and unofficially. As U.S. Environmental Protection Agency (EPA) moves to further reduce ammonia concentrations in surface waters, common water treatment methods transform what had been a water pollution problem into an air pollution issue. Earlier this year, EPA released its draft Integrated Risk ...
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Time-resolved ammonia measurement in vehicle exhaust
The objective of this study was to identify the influence of sampling and analytical approach on the quality of NH3 emission data of a gasoline-fuelled three-way catalyst vehicle. NH3 concentration measurements have been performed in the tailpipe and in the diluted exhaust after a constant volume sampling (CVS) system during five different test cycles. Chemical ionisation mass spectrometry ...
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The harm of ammonia gas and the treatment principle of ammonia gas scrubber
Ammonia is the most abundant alkaline gas in the atmospheric environment and plays an important role in the atmospheric environment and ecosystem. On the one hand, ammonia gas can promote the formation of sulfate and nitrate and increase the concentration of fine particulate matter (PM2.5) in the atmosphere, and on the other hand, it can neutralize atmospheric acidic substances and reduce the ...
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Axetris LGD F200-NH3 successfully integrated and tested at Harper Adams University - Case study
Researchers at Harper Adams University, Shropshire, United Kingdom, built and tested a multi-channel ammonia monitoring system by integrating the Axetris LGD F200 with the goal of developing a system which would provide substantially higher measurement performance, while being cost-efficient and robust for real-world use. Extensive tests were conducted over the span of multiple years, and the LGD ...
By Axetris AG
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Odour control case study
A Scottish maggot farm, supplying bait for fishing, faced the problem of dealing with ammonia odours emitted during production. The Scottish Environmental Protection Agency (SEPA) had given the company an emissions discharge consent level of a demanding 5ppm of ammonia. To achieve this the maggot farm commissioned a biofilter to remove the pollutants from the air stream. The design of the ...
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Innovative Ammonia Control - Case study
Ammonia has increasingly become more of a regulatory concern. Ammonia emissions into the atmosphere have been linked to the formation of fine particulate matter, while ammonia emissions in wastewater are restricted because of the negative affect the chemical has on rivers, lake, and aquifers. Many sources of biofuels contain ammonia or can create ammonia during processing. The following case ...
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Measurement of ammonia emissions using various techniques in a comparative tunnel study
A field-based intercomparison study for ammonia measurements was conducted using seven analytical methods. It included sulphuric acid impinger, citric acid denuder, differential optical absorption spectroscopy (DOAS), Fourier transform infrared spectroscopy (FTIR), photoacoustic spectroscopy (PAS), and continuous aqueous extraction followed by measurement of conductivity (Airrmonia). Measurements ...
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Nitrogen removal from digested manure in a simple one-stage process
A process based on partial nitrification and recirculation into the anaerobic digester was studied to remove nitrogen from digested manure and thus reduce enhanced gaseous ammonia emissions due to on-farm biogas production. An anaerobic reactor representing an anaerobic manure digester was fed with a nitrite solution and digested manure liquor. Nitrite was efficiently removed from the influent ...
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Acidification of slurry approved as BAT to reduce ammonia emissions
The EU countries agreed in December 2016 on stricter emission targets for selected pollutants, including ammonia. As 94% of the ammonia emissions come from agriculture, the industry, and livestock farming, in particular, will be seeing new measures in the coming years. Following this, slurry acidification was approved as BAT, as one potential ammonia mitigation measure for pig farms by European ...
By Biocover A/S
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Ammonia emissions from surface flow and subsurface flow constructed wetlands treating dairy wastewater
Received for publication January 14, 2008. Agricultural wastewater treatment is important for maintaining water quality, and constructed wetlands (CW) can be an effective treatment option. However, some of the N that is removed during treatment can be volatilized to the atmosphere as ammonia (NH3). This removal pathway is not preferred because it negatively impacts air quality. The objective of ...
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Analysis of greenhouse gas emissions from 10 biogas plants within the agricultural sector
With the increasing number of biogas plants in Germany the necessity for an exact determination of the actual effect on the greenhouse gas emissions related to the energy production gains importance. Hitherto the life cycle assessments have been based on estimations of emissions of biogas plants. The lack of actual emission evaluations has been addressed within a project from which the selected ...
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Sensitivity of ozone and aerosols to precursor emissions in Europe
We modelled the air quality in Europe during January and June 2006 using the MM5/CAMx model system and studied the sensitivity of ozone and aerosol formation to precursor emissions. Increased isoprene emissions by a factor of four in summer caused an increase in afternoon ozone by up to 10%. On the other hand, the effect on secondary organic aerosols (SOA) was very small. Reductions in NOx ...
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Measured and simulated Nitrogen fluxes after field application of food-processing and municipal organic wastes
The aims of this study were to (i) assess N fluxes (mineralization, volatilization, denitrification, leaching) caused by spreading various organic wastes from food-processing industries during a field experiment, and (ii) to identify the main factors affecting N transformation processes after field spreading. Experimental treatments including the spreading of six types of waste and a control soil ...
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Impacts of Novel Protein Foods on Sustainable Food Production and Consumption: Lifestyle Change and Environmental Policy
We analyse the impacts of a change in consumers’ preference for Novel Protein Foods (NPFs), i.e. a lifestyle change with respect to meat consumption, and the impacts of environmental policies e.g. tradable emission permits for greenhouse gases (GHGs) or an EU ammonia (NH3) emission bound per hectare. For our analysis we use a global applied general equilibrium (AGE) model that includes consumers’ ...
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Sewage sludge as fertiliser – environmental assessment of storage and land application options
Sewage sludge (SS) contains beneficial plant nutrients and organic matter, and therefore application of SS on agricultural land helps close nutrient loops. However, spreading operations are restricted to certain seasons and hence the SS needs to be stored. Storage and land application of SS are both potential sources of greenhouse gases and ammonia, leading to global warming, acidification ...
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Effect of temperature on composting residual Organic Fraction of Municipal Solid Waste (OFMSW) after anaerobic digestion
Aerobic composting is generally considered as a necessary post-treatment for residual solids after anaerobic digestion. This study aimed to determine the effects of temperature on biodegradation, microbial population density in composting residual OFMSW after anaerobic digestion. Four composting runs at different set temperatures were conducted. The rate of CO2 and NH3 emissions, moisture ...
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Assessing Environmental Integration in EU Agriculture
Farming has a strong impact on the environment in the European Union (EU), both in a negative and a positive sense. The common agricultural policy (CAP) is a major driver of the agricultural sector, and can therefore positively influence environmental management by farmers. This briefing investigates whether relevant policy measures are well-targeted from a biodiversity perspective. It builds on ...
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