Hasanudin, Udin (2017) PRODUKSI BIOGAS DARI CAMPURAN KOTORAN SAPI DENGAN RUMPUT GAJAH (Pennisetum purpureum) [PRODUCTION OF BIOGAS FROM A MIXTURE OF COWDUNG AND ELEPHANT GRASS (Pennisetum purpureum)]. Jurnal Teknik Pertanian Lampung, 6 (1). pp. 23-30. ISSN 2549 0818

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Abstract

This study aimed to determine the production of biogas from a mixture of elephant grass and cow dung. Elephant grass, obtained from a local farmer in Gedong Tataan (Pesawaran), at 2-month old when cut, was manually chopped with a maximum length of 5 cm. Fresh cow dung was taken from The Department of Animal Sciences, the University of Lampung. Elephant grass was thoroughly mixed with cowdung and was then diluted with tap water at different dilution rate, namely 50 ℓ, 75 ℓ, and 100 ℓ. The diluted substrate was introduced into 220-liter batch digesters and was tightly sealed. The treatments were compared to the control which used only 25 kg of cow dung diluted with 25 ℓ of water. All treatments were conducted with two replications. The parameters included daily temperature, substrate pH (initial and final), TS and VS contents, biogas production, biogas yield and biogas composition. The results showed that initial pH of all treatments were in the normal range, namely 7.73, 8.08, 8.00, 7.20 respectively for P1, P2, P3 and control; whereas final pH was 4.50, 4.62, 6.82, 7.30. The average daily temperature respectively was 33.1°C, 29.6°C, 31.2°C and 30.2°C. The total of biogas production was 439.42 ℓ, l 353.02 ℓ, 524.32 ℓ and 519.27 ℓ respectively for P1, P2, P3, and control with respective biogas yield of 42.20 ℓ/kgTS, 33.91 ℓ/kgTS, 50.38 ℓ/kgTS, 72.42 ℓ/kgTS and methane yield of 6.85ℓ/kgVS, 13.38ℓ/kgVS, 69.62ℓ/kgVS and 102.86 ℓ/kgVS.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Depositing User: Prof. UDIN HASANUDIN
Date Deposited: 16 Nov 2017 04:54
Last Modified: 16 Nov 2017 04:54
URI: http://repository.lppm.unila.ac.id/id/eprint/5503

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