Effect of Independent Chemical Reagents on the Purification Process of Biogas Produced from Cow dung

Research areas: Year: 2015
Type of Publication: Article Keywords: Cumulative biogas, calorific efficiency, element ratios, and cow dung
  • and Abbas Baba Kura, Y. M. Ngulde
Journal: Journal of Medical and Biological Sciences Volume: 5
Number: 2 Pages: 1-16
Month: December
The high cost of energy, inadequate infrastructures and the environmental impact of energy consumption places enormous stress on the developing world. Developing new strategies for designing low-cost energy technologies and enabling their use by the world poorer nations remains one of the larger challenges for the 21st century. In Nigeria, efforts are being made towards sourcing for the alternative cheaper and affordable energy source especially those that impact less pressure on our already fragile environment, one of which is biogas. The present study was carried out to find out how the calorific capabilities of biogas generated from cow dung can be improved. The biogas generated from cow dung was passed through gas chromatography which revealed the constituent elements ratio of cow dung as, (CH4)-54.4%, Carbon dioxide (CO2)-38.3%, Oxygen (O2)-0.05, ammonia (NH4)-1%, hydrogen (H2)-0.6%, hydrogen sulphide (H2S)-0.8%, nitrogen (N2)-1%, water (H2O)-0.08% and others -0.19%. Similarly, the purification process of the biogas passing it through chemical action of acidified potassium permanganate (Kmno4), Concentrated potassium hydroxide (KOH) and a hygroscopic substance, calcium oxide or quicklime (Cao) equally revealed the following results of cowdung :CH4- 54.09%, CO2-33.2%, O2-0.02%, NH4-0.9%,H2-0.6%, H2S-0.7%, N2- 3.3%,H2O-0.8% and others 0.14%. The increase in calorific value after catalytic action on biogas produced from cow dung revealed increased temperature in the heating processes as against the lower temperature of the biogas that has not been subjected to chemical action the volume of gases utilized in the heating process varied in both cases (before and after chemical action).