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Tehnički potencijal kukuruzovine i mogućnost proizvodnje bioplina u kodigestiji s goveđom gnojovkom

The technical potential of corn stover and the possibility of biogas production in co- digestion with cow manure
Authors: Jovičić, Daria; Kovačić, Đurđica; Kralik, Davor; Spajić, Robert;

Tehnički potencijal kukuruzovine i mogućnost proizvodnje bioplina u kodigestiji s goveđom gnojovkom

Abstract

U Republici Hrvatskoj kukuruz je jedna od najzastupljenijih žitarica čiji uzgoj je, prema podacima iz 2015. godine, zastupljen na 263 970 ha. Prema tom podatku i podacima o ukupnoj proizvodnji kukuruza moguće je izračunati koliki je tehnički potencijal kukuruzovine, odnosno koja se količina kukuruzovine može koristiti za proizvodnju energije. Izračunom je utvrđeno da je (uzevši u obzir srednju vrijednost ukupne proizvodnje triju godina - 2013., 2014. i 2015.) 394 134 t moguće upotrijebiti kao tehnički potencijal. Jedan od mogućih načina iskorištenja kukuruzovine za proizvodnju energije je putem anaerobne fermentacije, odnosno za proizvodnju bioplina. U ovom istraživanju kukuruzovina je korištena kao kosupstrat u kodigestiji sa goveđom gnojovkom. Fermentacija je provedena u termofilnim uvjetima (55 °C) u trajanju od 26 dana. Oba uzorka (G - svježa goveđa gnojovka i KG - svježa goveđa gnojovka + suha samljevena kukuruzovina) pripremljena su u 3 paralele. Ukupni radni volumen u reaktorima bio je 500 cm3. Omjer inokulum/supstrat iznosio je 1/2.4 (na bazi suhe tvari). Tijekom fermentacije svakodnevno su uzorci proizvedenog plina analizirani te je u svima utvrđen udio metana, ugljikovog dioksida i dušika. Prosječni prinos bioplina i metana u grupi G iznosio je 373, 7 cm3/g OT i 242, 5 cm3/g OT, a u grupi KG 459, 1 cm3/g OT, te 285, 6 cm3/g OT. Iz tog rezultata moguće je zaključiti da je kukuruzovina u kodigestiji sa goveđom gnojovkom proizvela 18, 6% više bioplina kao i 15, 1% više metana (na bazi organske tvari).

Country
Croatia
Keywords

cow manure, corn stover, bioplin, goveđa gnojovka, anaerobic fermentation, anaerobna fermentacija ; bioplin ; goveđa gnojovka ; kukuruzovina ; tehnički potencijal, tehnički potencijal, biogas, kukuruzovina, anaerobna fermentacija, technical potential

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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Energy Research