Estimation of concentrations of climate-active substances in emissions from processing of solid animal by-products

The need to obtain reliable data on greenhouse gas emissions from the livestock sector is becoming increasingly urgent. Actual measurement of gas concentrations from animal byproducts will improve the accuracy of data submitted to the National Inventory Report.

The aim of the study was to determine the concentration of climatically active substances in emissions from solid by-products of animal husbandry at an experimental laboratory facility. All types of animal by-products studied came from large agricultural organisations. The initial raw material for the study was animal by-products as bedding poultry manure, solid fraction of pig manure and solid fraction of cattle manure. Concentrations of climate-active substances in emissions were investigated on the experimental laboratory set-up designed at IEEP — branch of FSAC VIM, simulating temperature conditions of composting and periodic aeration operation. a four-channel ELAN plus gas analyser measured the concentrations of CO₂, CH₄, H₂S and NH₃. The concentration of nitrous oxide in the gas-air mixture was determined in the laboratory of the Agrophysical Research Institute using a “Kristalluks-4000M” gas chromatograph. The obtained results were analysed by the method of mathematical statistics. The results of the study proved the potential of the designed laboratory facility to provide a representative data on emissions of climate-active substances from animal by-products, comparable to the results of other studies in this field.

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