Biogas Production of Pennisetum with Different Nitrogen Content
As Pennisetum may play some role as material of biogas fermentation to relieve energy crisis.The experiment compared gas production among different Pennisetum of crude protein content.The results indicated that Pennisetum could be carbon material of biogas fermentation instead of straw;and it was no significant difference among five kinds of treatments in biogas production.Compared with Treatment 1 and Treatment 2,the biogas production 110 553.3 mL of Treatment 3 was the highest,which was 15.2% and 1.1% more than Treatment 1 and Treatment 2,respectively.The biogas production 93 460.0 mL of Control 1 was the least.The absolute production of Treatment 1,Treatment 2 and Treatment 3 respectively increased 2.7%,17.1% and 18.3% compared with Control 1,Treatment 2 and Treatment 3 respectively increased 5.1% and 6.2% compared with Control 2,but Treatment 1 decreased 7.9%.Higher N content in the grass led to lower biogas production.