|
Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 22, No. 8, 2018, pp. 1257-1262
|
Bioline Code: ja18210
Full paper language: English
Document type: Research Article
Document available free of charge
|
|
Journal of Applied Sciences and Environmental Management, Vol. 22, No. 8, 2018, pp. 1257-1262
en |
Effect of Rumen Content to Water Ratio in Biogas Production
ANNOR, J; ADZITEY, F; ANSAH, T & AMPADU, OM
Abstract
Biogas technology is widely used as a better alternative in the handling of waste in many societies in
the world. This study was conducted to investigate the effect of rumen content to water ratio in biogas production. An
experiment was carried out using 75 litre capacity locally made anaerobic digester. Rumen contents were formulated in
three proportions designated as T1, T2 and T3. T1 contained 30kg of rumen contents and 30 litres of tap water; T2
contained 20kg of rumen contents and 40 litres of tap water; and T3 contained 40kg of rumen contents and 20 litres of tap
water. Each proportion was duplicated and the whole experiment was triplicated for 20 days each. The pH, substrate,
ambient temperatures and the biogas produced were recorded in two days’ interval up to the 20 days. The result obtained
from the study showed that there were significant differences (P < 0.05) in the average pH and the biogas produced. The
pH of T2 (6.97) was significantly higher than that of T1 (6.80) and T3 (6.81). The biogas produced by T3 was significantly
higher than that of T1 and T2. T3 produced the highest average volume of 16.70m3 biogas per kilogram of rumen content
and the highest percentage (56.4%) of methane. There were no significant differences (P > 0.05) in the average substrate
and ambient temperatures, and the volume of CO2 produced. This study revealed that it is more efficient to produce biogas
using 40kg of rumen contents and 20 litres of tap water than producing biogas with 30kg of rumen contents and 30 litres
of tap water or 20kg of rumen contents and 40 litres of tap water.
Keywords
biogas; pH; rumen; temperature; water
|
|
© Copyright 2018 - Annor et al.
|
|