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Mathematics in Education, Research and Applications (MERAA), 2018(4), 1

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Published online 2018-12-18

Influence of microclimatic environment on production of pollutants from recycled manure solids in laboratory conditions

Ingrid Karandušovská, Jana Lendelová, Štefan Boďo, Miroslav Žitňák
Slovak university of Agriculture in Nitra, Nitra, Slovak Republic

Article Fulltext (PDF), pp. 18–22

The aim of this experiment was to analyse influence of climatic factors on production of harmful gases from organic litter. The sample of separated sludge slurry was collected from lying area of dairy housing. Measurement of produced harmful gases was carried out in laboratory conditions in the environmental chamber, where the amount of released gas concentrations from sample of separated sludge was monitored under different microclimatic conditions by setting the temperature. The photoacoustic multi-channel analyser INNOVA 1309 with accessories was used for the measurement of gas concentrations. It has been shown, that increasing air temperature in the climatic chamber increase release of all monitored gases. Most of this was reflected CH4 and NH3 in the measurement of dry samples of separated manure, where the concentration growing rapidly at air temperature of 20 °C. Minimum ammonia concentration of 0.53 mg.m-3 was at air temperature of -10 °C and maximum of 5.11 mg.m-3 at air temperature of 40 °C. The concentrations of monitored gas increased continuously with the temperature of the air when measuring of moist samples of separated manure. Minimum ammonia concentration of 0.93 mg.m-3 was at air temperature of -10 °C and maximum of 5.8 mg.m-3 at 40 °C air temperature. Statistical analysis of the results showed there is a significant dependence between air temperature and ammonia concentrations and other monitored gases (P < 0.05). The gas production from the wet recycled manure solids sample was significantly higher (P < 0.05).

Keywords: dairy cattle, recycled manure solids, bedding
JEL Classification: Q15