Biogas is a renewable source of energy which could be a boon for rural areas. Raw biogas mainly consists of CH4, CO2 and a trace amount of H2S. The presence of H2S is undesirable as it is corrosive and creates various health issues. On the other hand, CO2 lowers down the HHV of biogas. It is desirable to scrub CO2 and H2S so that the utility of biogas can be enhanced including its use as Bio-CNG. Conventional near atmospheric biogas scrubbing is usually performed in a packed column where it needs to be operated at a high L/G ratio due to low solubility of gases in water. Tall and bulky packed columns are required to accommodate such high flow rates. The packed column-based scrubber also suffers from high pressure drop, the problem of flooding, high parasitic power consumption, etc. These factors lead to high installation and operating cost. The objective of the current work is to develop a cost effective, modular, scalable rotating disk based mass exchanger which could scrub CO2 near atmospheric pressure and produce bio methane for use in different applications such as bottling, Bio-CNG and household cooking gas.