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Membrane Biogas Separation
Membrane Biogas Separation is a modern biogas upgrading technology that uses selective permeable membranes to separate methane from CO₂ and other gases. It offers an efficient, compact alternative to traditional scrubbing methods for achieving high-purity Bio-CNG.
How It Works
Raw biogas is passed through specialized membrane modules under pressure. The membrane material allows smaller gas molecules like CO₂ to pass through more readily than methane, effectively separating the two. The result is a methane-enriched gas stream suitable for compression, while the separated CO₂ and other gases are vented or further processed. The membrane system can be configured in multiple stages to achieve the desired purity level.
Key Benefits
- Compact, modular design with a smaller plant footprint
- Energy-efficient separation compared to some conventional methods
- Minimal moving parts, reducing maintenance requirements
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