| 초록 |
Biogas is a clean environment friendly fuel that is produced by bacterial conversion of organic matter under anaerobic condition. Raw biogas contains about 55-65% methane, 30-45% carbon dioxide, 0.5% of hydrogen sulfide gas and fraction of water vapor. Pure methane has a caloric value of 9,800 kcal/m3, but the caloric value of raw biogas is about 5,000 kcal/m3. To achieve the standard composition of the biogas the treatment techniques like absorption or membrane separation must be applied. In this paper the experimental results of the methane purification in simulated biogas mixture consisted of methane, carbon dioxide and hydrogen sulfide were presented. It was shown that the using the hollow fiber module with polysulfone membrane it was possible to achieve the purification of methane from the concentration of 55% up to 97%. The membrane material was resistant to the small concentrations of sour gases and for the prevention of methane losses the membrane system has to be used to improve process efficiency. |
