Livestock Ammonia Articles
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Experiences with 7 years of acidification in Denmark - SyreN system, a commercial method to fertilize with sulphate while reducing animal slurry ammonia emission
Abstract In 2009 a group of companies were assembled (Aarhus University, SEGES, BioCover A/S and Grundfos ) and committed to a joint development project “SyreN” - technology for field acidification of slurry, with support from the Danish ministry for development and innovation. The group defined and created a demand specification for using sulfuric acid together with a slurry tanker ...
By Biocover A/S
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Sow management: Bongdong trumpets stellar production - Case Study
The past decade has seen changes in the South Korean pig industry landscape. From more than 12,000 pig farms in 2005, the number declined to 6,000 in 2012. Despite this, total pig inventory in the country has gone up to almost 10 million heads from roughly nine million heads during the same period, evidence of the growing efficiency and productivity of the country’s pig producers. These ...
By Big Dutchman
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Removal and recovery of ammonia from chicken manure
The feasibility of the conversion of organic nitrogen available in raw chicken manure (CM) into ammonia via hydrolysis and the removal of ammonia from anaerobically digested manure were evaluated in this study. Firstly, the hydrolysis experiments were performed and the effects of temperature, total solids (TS) content and retention time were investigated. The results showed that 90% of the ...
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Nitrogen losses from dairy manure estimated through nitrogen mass balance and chemical markers
Received for publication February 13, 2009. Ammonia is an important air and water pollutant, but the spatial variation in its concentrations presents technical difficulties in accurate determination of ammonia emissions from animal feeding operations. The objectives of this study were to investigate the relationship between ammonia volatilization and 15N of dairy manure and the feasibility of ...
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EPA proposal to change reporting of hazardous substances from farm animal waste
EPA has proposed a rule change to provide an administrative reporting exemption for air releases of hazardous substances -- primarily ammonia and hydrogen sulfide -- from animal waste at farms. The aim is to enable authorities to better focus their attention on hazardous substance releases that require emergency response while reducing reporting burdens on America’s farms. EPA’s proposed rule ...
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Cover crop effects on the fate of N following soil application of swine manure
Abstract Cereal grain cover crops increase surface cover, anchor corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] residues, increase infiltration, reduce both rill and interrill erosion, scavenge excess nutrients from the soil, and are easily obtained and inexpensive compared to other cover crop options. The use of cereal grain cover crops in fields where manure application occurs ...
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An integrated perspective on assessing agricultural air quality
The biogeochemical cycling of trace gases (e.g. nitrogen, sulphur, etc.), and contaminants on local, regional, and global scales is a complex system of emissions, transformations, transport, and deposition. To date, limited, if any, attempt has been made on quantifying and identifying direct emissions of gaseous sulphur compounds from agricultural operations. This represents a major regulatory ...
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