Haryanto, Agus and Oktafri, Oktafri and Triyono, Sugeng and Zulyantoro, M. Rizki (2019) PENGARUH KOMPOSISI SUBSTRAT CAMPURAN KOTORAN SAPI DAN JERAMI PADI TERHADAP PRODUKTIVITAS BIOGAS PADA DIGESTER SEMI KONTINYU. Jurnal Ilmiah Rekayasa Pertanian dan Biosistem, 7 (1). pp. 106-125. ISSN 2443-1354

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Abstract

This study aims to determine the effect of substrate composition on biogas productivity from a mixture of cow dung and rice straw using semi-continuous digester. Rice straw was taken from Way Galih Village, South Lampung, and fresh cow dung was obtained from the Department of Animal Husbandry, Faculty of Agriculture, University of Lampung. Cow dung and rice straw were mixed with composition of TS ratio P1 (75% : 25%), P2 (70% : 30%), P3 (65% : 35%), P4 (60% : 40%), P5 (55% : 45%) and P6 (50% : 50%). Substrate mixture is then added with tap water to obtain a TS of 5%. Six digesters with a working volume of 30 L (labeled as P1 to P6) were filled with 26 liters of cow dung diluted with water at a ratio of 1:1. Digesters was left for 4 days for stabilization. Starting on day 5, prepared substrate mixture is added to the digester with a loading rate of 0.5 liter/day. The parameters in this study included daily temperature, pH, TS and VS content, daily biogas production, biogas productivity, and biogas quality. The results showed that the average pH for all treatments was almost same, namely 6,9–7,1. The average temperature of the digester in the morning is around 26°C, while around 29°C achieved at noon. Substrate composition of P4 shows the best results with cumulative biogas production of 448.15 L for 60 days of observation, and daily biogas production reached 9.1 to 9.5 L after a stable condition. The produced biogas has good quality because it shows a bright blue flame.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
T Technology > TP Chemical technology
Divisions: Fakultas Pertanian (FP) > Prodi Teknik Pertanian
Depositing User: Dr. Ir. AGUS HARYANTO
Date Deposited: 06 May 2019 04:42
Last Modified: 06 May 2019 04:42
URI: http://repository.lppm.unila.ac.id/id/eprint/11527

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