Original scientific paper

APPLICATION OF Galega orientalis IN BIOGAS PRODUCTION

Đurđica Mihić ; Poljoprivredni fakultet u Osijeku, Osijek, Hrvatska
Davor Kralik ; Poljoprivredni fakultet u Osijeku, Osijek, Hrvatska
Ana Kalafatić ; Poljoprivredni fakultet u Osijeku, Osijek, Hrvatska
Daria Jovičić ; Poljoprivredni fakultet u Osijeku, Osijek, Hrvatska
Gabriella Kanižai-Šarić ; Poljoprivredni fakultet u Osijeku, Osijek, Hrvatska

Abstract

Co-digestion of fresh pig slurry and fodder Galega orientalis Lam. was conducted to determine the energetic potential of Galega orientalis for biogas production and to compare it with some crucial feedstock which are used in the production of biogas. Galega orientalis is a perennial forage legumes, interesting because of its longevity (7-15 years), durability, resistance and simple and economical production. The experiment was conducted in mesophilic conditions in discontinuous reactors with retention time of 61 days. Before and after fermentation the chemical parameters of substrates were determined – pH, total solids (TS), volatile solids (VS), organic carbon and organic
nitrogen, elements P, K, Ca and Mg in post fermented residuum with the aim of determining the possibility of further use as organic fertilizer. The biogas yield and its chemical composition were determined. The average biogas yield of the control group was determined to be 0.219 m3/kg VS while of the experimental group (with legumes addition) it was 0.610 m3/kg VS. According to the average composition tested samples did not differ significantly. The average methane content was 62.6% in control group and in the experimental group it was 61.9%.

Keywords

Galega orientalis Lam.; methane; biogas yield; pig slurry

Hrčak ID:

103781

URI

https://hrcak.srce.hr/103781

Publication date:

3.6.2013.

Article data in other languages: croatian

Visits: 1.110 *