U prirodi nailazimo na anaerobnu digestiju u zemlji i u sedimentima na dnu jezera i oceana. Tamo se proizvodi metan kojeg je Otkrio Alessandro Volta. Digestija se dijeli u 4 faze: hidrolizu, acidogenezu, acetogenezu i metanogenezu.
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Kot substrat smo uporabili les, ki smo ga predhodno predobdelali z glivama Trametes versicolor in Hypoxylon fragiforme. Voting is allowed only for logged in users.
Pre-treated lignocellulosic material is easier to be used by bacteria and the material could be more easily converted into biogas. On the laboratory scale the efficiencies of biogas from lignocellulosic materials were attempted at being improved. Wood was used as a substrate, which was pre-treated with the fungi Trametes Versicolor and Hypoxylon fragiforme. Also several mixtures of a substrate with chicken manure were analysed, and the impacts were studied of those mixtures on biogas production.
The results obtained by using untreated substrates, pure cellulose and inoculum were used for comparison. The influences of lignin proportions within the lignocellulosic material were studied in regard to the quantities of biogas produced during the anaerobic digestion process. The progress of anaerobic digestion and biogas formation were monitored as well as temporal variations of the lignin content in those lignocellulosic materials pre-treated by fungi and during the anaerobic digestion process.
It was discovered that slightly more biogas was produced during the anaerobic digestion of pre-treated wood tham during that of non pre-treated wood. Biogas production from the pre-treated material with fungus Hypoxylon fragiforme was higher than that pre-treated with a fungus Trametes versicolor.
The addition of chicken manure to the wood had an effective impact on biogas yield.