PEMISAHAN GAS CO2 BIOGAS MENGGUNAKAN ALAT WATER SCRUBBER DENGAN VARIASI LAJU ALIR DAN TEKANAN BIOGAS

Biogass is produced from fermentation of organic materials such as domestic waste and manure from animal husbandary. To increase the quality of biogass as a fuel, it has to be followed by the increasing of CH4 concentration. It could be done with seperating CH4 from other gases such as CO2. One of separation methode is using a water scrubber with water act as medium which as CO2 is more soluable to water than CH4. The result showed that CO2 absorption was increased followed by the increasing of the pressure and the biogass flow rate. The percentage of CO2 absorption at 2,5 m3 per hour of biogass flow rate and 8 bar was 4,6%, meanwhile it was 11,l% at 10 bar. In the other side, there was 9,5% of CH4 increasing at 10 bar. Therefore, CO2 separation from biogass using water scrubber at 10 bar is better than at 8 bar.