Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Pig slurry"”.
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Mitigation strategies for nitrous oxide emissions based on fertilization management of irrigated crops in a mediterranean climate = Estrategias de mitigación de óxidos de nitrógeno basadas en el manejo de la fertilización en cultivos de regadío bajo clima mediterráneo
… ‘El Encin’ Field Station, near Madrid. Untreated pig slurry with and without the nitrification inhibitor dicyandiamide, digested thin fraction of pig slurry, composted solid fraction of pig slurry and composted municipal solid waste mixed with urea were applied at a rate of 175 kg available N …
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Durabilidad de morteros de cemento en contacto con purines de cerdo
… or patterned flooring (prefabricated slats) or slurry storage ponds, of both concrete or reinforced concrete, or even covered mortar brick walls. All these elements can come into contact with diverse aggressive environments such as manure, slurry, cleaning and disinfection products, feed or …
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International biogas applications
… have grown steadily in recent years. Animal slurry and sewage sludge have been traditionally used as feedstock for AD, however, substrates such as the organic fraction of municipal solid waste (OFMSW) and energy crops are preferred due to their higher methane yields. Concerns about the …
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Operation of a Tubular Anaerobic Digested on Piggery Waste
… hydraulic retention times (HRT) of 10-50 days on pig slurry of 10,,5,.2.5 and 1% Total Solids content. Tube inclination of 16-20 overcame the scumming problems encountered with horizontal tubular digesters. Performance compared favourably with completely mixed digesters, gas yields showing similar …
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Biogas production from novel substrates
… recorded ranging from 38 ± 2.0 L CH4 kg−1 VS for pig slurry (weaning pigs) to 805 ± 57 L CH4 kg−1 VS for used cooking oil (UCO). However the selection of the best preforming feedstock in terms of C:N ratio or BMP yield alone is not sufficiently adequate. A total picture has to be created which …
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Continuous aerobic processing of piggery effluent: a new approach to quantifying the fate of the nitrogen component
… balance around an aerobic treatment system for pig slurry, to quantify the various forms of nitrogen entering and leaving under different conditions. The purpose of this was to assess the effect of such treatment conditions in terms of the amount of polluting forms of nitrogen generated from the …
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The Chemical Forms and Plant Availability of Copper in Composting Organic Wastes
… three different organic wastes (grass/sawdust, pig slurry/sawdust and sewage sludge cake/sawdust) to which copper had been added as copper acetate, sulphate or EDTA, were composted in the laboratory. Samples were taken at 0, 105 and 318 days and subjected to a range of analyses: copper by …
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Epidemiology and comparative analysis of Yersinia in Ireland
… Yersinia enterocolitica is recovered from pigs (main source of pathogenic Y. enterocolitica) at the levels similar to that observed in Yersinia endemic countries. Introduction of Yersinia selective culture procedures may increase Yersinia isolation rates. To establish whether the small …
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Ammonia emission from fertiliser application : quantification techniques and mitigation strategies
… bare soil in Segovia, NH3 emission from digested pig slurry (110 kg N ha-1), spread over a large rectangular plot, was quantified using the micrometeorological integrated horizontal flux technique (IHF). The results were compared with those estimated by an inverse dispersion backward Lagrangian …