Biogas Purification Membranes

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India produces large quantities of organic waste ( 0.17-0.7 kg/capita/day). Anaerobic digestion of the organic waste produces raw biogas containing majorly CH 4 and CO 2.

The Acid gases (CO 2 , H 2 S) need to be removed from raw biogas. In India, this is done by conventional technologies.

Membrane technology though has advantages over conventional ones,

• 1. Physical method of separation
• 2. No need of high quantity of water for scrubbing
• 3. No need of chemicals/adsorbents; No frequent replacement cost
• 4. Low Capex and Opex
• 5. Compressed biomethane as outlet, can be directly used for refilling and distribution