Design and Construction of a Water Scrubber for the Upgrading of BiogasTemilola T Olugasa* and Oluwafemi A Oyesile
Department of Mechanical Engineering, University of Ibadan, Ibadan, Nigeria
- Corresponding Author:
- Olugasa TT
Bsc, Department of Mechanical Engineering University of Ibadan
Oyo State Nigeria
E-mail: [email protected] yahoo.co.uk
Received date: May 06, 2015; Accepted date: October 14, 2015; Published date: October 20, 2015
Citation: Olugasa TT, Oyesile OA (2015) Design and Construction of a Water Scrubber for the Upgrading of Biogas. J Fundam Renewable Energy Appl 5:190. doi:10.4172/2090-4541.1000190
Copyright: © 2015 Olugasa TT, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This paper discusses the results of studies conducted on raw biogas produced from a prototypic biogas production plant located at the Teaching and Research Farm, University of Ibadan, Ibadan. This setup consists of a mixing chamber, a biogas digester and a stabilizing unit, locally designed and fabricated. It further discusses preliminary and detailed design coupled with the construction of an effective and efficient technology used in purifying raw biogas generated from the prototypic biogas production plant; this technology is otherwise known as the Water Scrubbing technology. The Scrubbing system consists of the Water scrubber with iron wool packed bed connected to a 500 litre water tank, and two tyre tubes which were used in storing the pre scrubbed (raw) biogas and the scrubbed (purified) biogas. The water scrubber has an inlet for the entry of the raw biogas and a discharge for the exit of the scrubbed biogas. Raw biogas from the plant was stored in a tyre tube and directly fed into the Water scrubber housing the iron wool packed bed, the purified biogas from the exit was also collected into another tyre tube. The samples of the gas mixture were taken before and after scrubbing and analyzed with Pascal Manometric Glass Tube technique. Results indicated that methane content of the scrubbed/ purified biogas was raised from 58% to 82% due to the reduction of Carbon dioxide and Hydrogen Sulphide.
CO2 was reduced from 31% to 14% while H2S was reduced from 1% to 0.4%. The corresponding Energy content of the purified biogas was evaluated to be 41MJ/kg which is higher than that of the raw biogas which was evaluated to be 29MJ/kg.