Biogas is one of the most important renewable energy source. Biogas normally contains 55 – 65% methane (CH4) and 45 – 55% carbon dioxide (CO2) and trace amounts of hydrogen sulphide (H2S). Raw biogas cannot be used as vehicle fuel as it contains CO2 and H2S which lowers the calorific value and causes corrosion to the storage vessel respectively. Enriching the biogas by removing CO2 and H2S will significantly improve the quality of biogas. The application of biogas either as cooking fuel or engine fuel chooses the type of purification method. In this work biogas enrichment using coconut shell derived granular activated carbon as CO2 adsorbent by pressure swing adsorption (PSA) technique was investigated. | Biogas purification using coconut shell based granular activated carbon by pressure swing adsorption
