QUANTITATIVE REDUCTION OF FEEDSTOCK BIOMASS AS A RESULT OF CONVERSION IN ANAEROBIC DIGESTION IN AGRICULTURAL BIOGAS PLANT
Journal Title: Folia Pomeranae Universitatis Technologiae Stetinensis Agricultura Alimentaria Piscaria et Zootechnica - Year 2016, Vol 39, Issue 328
Abstract
The aim of study was the estimated quantitative analysis of anaerobic digestion substrates and products, and estimation of feedstock biomass reduction level in agricultural biogas plant located near a pig fattening farm in West Pomerania, Poland. The biogas plant runs two-stage, continuous, thermophilic anaerobic digestion with maize silage and pig slurry from pig farm as a substrates. Quantitative data regarding daily feedstock input, digestate output, and produced biogas from 6 months were collected. The data were statistically analysed in terms of the law of conservation of mass. It has been found, that biomass of digestate was statistically significantly reduced relative to feedstock biomass of 11.86% (p < 0.01). The amount of reduced biomass is not statistically different from the amount of produced biogas, whose mass is 10.21% of the feedstock. This means that observed reduction of biomass was a result of conversion to biogas only, and the installation is working hermetically under the law of mass preservation. Anaerobic digestion, in addition to other benefits, reduces amount of pig slurry due to conversion of biomass to biogas. It has ecological importance, especially in pig industry.
Authors and Affiliations
Michał GRUDZIŃSKI, Arkadiusz PIETRUSZKA
Keywords
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