Abstract—This study is focused on the development of biodigester, and the mathematical modeling of biogas production with 50% and 80% by volume of monosubstrate of Hay, Corn and Cow Manure.
The mathematical model was developed using the designed and fabricated 2750 cm3 digester within 31 days which was proven to be significantly related to the density of gas and temperature. The 50% by volume Hay, Corn and Cow Manure revealed a significant correlation coefficient of determination (R2) values of 0.5294, 0.1271 and 0.0702 respectively and 0.3685, 0.1187 and 0.2841 for 80% by volume monosubstrate samples with respect to the density of gas. However, it was found out that the density of gas significantly increases as the %CH4 yield decreases or vice versa (except for 50% by volume monosubstrate Cow manure sample) for Hay and Cow Manure monosubstrate samples and the density of gas of Corn sample increases together with its increasing %CH4 yield. The significant relationship among the samples towards temperature and time is said to be proportional to each other for both Hay and Cow Manure and opposite to the Corn sample.
Furthermore, it was established that the significant effect of density of gas and temperature with time considering 50% by volume of Hay and Corn monosubstrate samples and 80% by volume of Hay, Corn and Cow manure monosubstrate samples lead to the development of the modeled equation following the 2nd order reaction.
Index Terms—Biodigester development, kinetic study, biogas
and biomass.
Sherwin T. Sepe was with the Department of Sciences under Chemistry
Section of Higher College of Technology, Muscat. He is now with German
University of Technology, Muscat Sultanate of Oman (tel.: +968-97722485;
e-mail: sherwin.sepe@gutech.edu.om, s_sepe_6300@yahoo.com).
Melito A. Baccay is with the College of Engineering of Technological
University of the Philippines, Manila, Philippines (e-mail:
melbaccay@yahoo.com).
Baba E. Jibril is with the Petroleum and Chemical Engineering
Department of Engineering, Sultan Qaboos University (e-mail:
baba@squ.edu.om).
Yahya M. Al Wahaibi is with the Department Head of Petroleum and
Chemical Engineering of the College of Engineering, Sultan Qaboos
University, Sultanate of Oman (e-mail: engpce@squ.edu.om).
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Cite:Sherwin T. Sepe, Melito A. Baccay, Baba E. Jibril, and Yahya M. Al Wahaibi, "Biodigester Development and Kinetic Study of Biogas Production from Biomass," International Journal of Chemical Engineering and Applications vol. 5, no. 2 pp. 138-146, 2014.
