Original scientific paper
INTERACTION OF THE DRY MATTER ON CONTENTS OF BIOGAS PRODUCED FROM PIG MANURE
Ivana Majkovčan
; IPK mliječna farma Holstein d.o.o., Osijek, Hrvatska
Davor Kralik
; Poljoprivredni fakultet Sveučilišta u Osijeku, Osijek, Hrvatska
S. Kukić
; Bioplin-Baranja d.o.o., Hrvatska
R. Spajić
; Belje d.d., Hrvatska
S. Lamza
; Upravni odjel za gospodarstvo, Grad Osijek, Osijek, Hrvatska
Daria Jovičić
; Poljoprivredni fakultet Sveučilišta u Osijeku, Osijek, Hrvatska
Abstract
Taking advantage of pig manure as biomass for production of biogas, is one of the ways of efficient use of waste with minimum interaction with the environment. Biogas and biomass oposite on fossil fuels has less emission of harmfull gasses and wastage rate. Emissions of carbon dioxide (CO2) in biomass, as a fuels, become from burning out is almost equal with amoung of apsorpted CO2 during growth of plants. Material from investigation was pig manure from a farm near Osijek, where all the pigs were kept on latticed floor. Methods of investigation were quantitative procedure with standard methods. On pig manure was investigated percent of dry matter (DM) and her correlation on amount of biogas with different composition. Amount of (DM) is low and teoreticaly between 0,5- 10 %. Results are variable and depends on rase, nutrition, handeling conditions, technology... The sample with low (DM) had high amount of ash > 50 % mineral part and high amount of (DM) had > 70 % dry organic matter (DOM). Higher amount of (DM) represents nutritive base for microorganisms with growing faster and produce more methane (CH4). High amount of (DM) gave high percentage of nitrogen N and CO2. Amount of N was in inverse proportion to the amount of CH4 (r=-0,948; p<0,001). Highly positive correlation was determined between (DM) on special accent on (DOM) and biogas amount (r = 0,947, p<0,001). Methane concentration was the highest in the group with the lowest biogas production. Higher content the (DOM) and the share of has positive correlation with fat in pig manure and gave high percentage of CH4.
Keywords
biogas; pig manure; carbon dioxide; methane; dry matter
Hrčak ID:
56764
URI
Publication date:
15.6.2010.
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