Effects of various nitrogen rates to biogas production yield in anaerobic digestion of only chicken manure
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
High nitrogen content of chicken manure might reach to the degree of toxic effect at anaerobic fermentation system. Raw material nitrogen ratio and the rate of demineralization in the reactor are important parameters in anaerobic reactor design. In this study, effects of various nitrogen contents on biogas production yields were investigated in order to obtain base limits at design phase of biogas plants which will run only chicken manure. All trials were carried out in a continuous stirred-tank reactor (CSTR) at mesophilic conditions. There was no pH adjustment made during trials. The stirrer works at a speed of 20 rpm and they worked every 2 minutes with intervals of 2 min. Reactor loading rate was increased each week in the following sequence 0,5, 1, 2 and 3 g.oDM/l.d. The effect of various nitrogen contents were observed with TKN and NH4-N analysis and also recorded daily biogas production yields. As a result, when there was no pH adjustment made, pH went up to alkali side and reached up to 8-8,5 with increasing loading rate. At this stage, nitrogen inhibition started and the biogas production yield was decreased 54% at the loading rate was as high as 3 g.oDM/l.d. Reflection of the trial results that organic nitrogen demineralization rate should be assumed around 60-70% at stabilize biogas production yield conditions.
Açıklama
Anahtar Kelimeler
Biogas, Chicken manure, Nitrogen inhibition
Kaynak
Life Science Journal
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
11
Sayı
2
