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Comprehensive overview of Compressed Bio Gas production, purification, and bottling technologies for sustainable energy solutions.
CBG or Compressed Bio Gas consists of mainly methane (more than 90%) and other gases like carbon dioxide (less than 4%). CBG is produced by anaerobic digestion of biomass and waste sources like agricultural residue, cattle dung, sugarcane press mud, municipal solid waste, sewage treatment plant waste, etc.
Decomposes organic molecules into glucose, amino acids and fatty acids
Converts organic molecules to volatile organic acids with bacteria
Bacteria digests volatile organic acids and releases acetic acid
Converts acetic acid to methane gas and other many gases
An Anaerobic Digester optimizes the anaerobic digestion of biomass to produce biogas for energy production. These systems can be made of concrete, steel, brick, or plastic, and come in various configurations including batch type digesters and continuous digesters.
Continuously stirred tank reactor with constant material feed
Horizontal design with progressive vertical mixing using gas injections
Simple load, digest, and remove cycle operation
Lined pit with flexible plastic cover for biogas capture
To improve calorific value and energy content, methane concentration must be increased while removing CO₂ & H₂S. Various advanced technologies are employed for efficient purification processes.
Carbon dioxide separation through adsorption under elevated pressure using activated carbon or zeolites. Widely used in India for large bio-gas systems.
Non-cryogenic separation using molecular sieves that preferentially adsorb target gases at ambient pressure, then regenerate under vacuum.
Utilizes CO₂'s higher water solubility compared to methane. CO₂ dissolves in water while methane concentration increases in gas phase.
Dry membranes permeable to CO₂, water and ammonia while blocking nitrogen and methane. Usually hollow fiber bundles.
CO₂ absorption and chemical reaction with monoethylamine for highly selective separation with strong chemical affinity.
Additional methods include Cryogenic upgrading, Biological fixation, Iron chloride dosing, and Activated carbon processes.
Advanced bottling systems for compressing purified biogas up to 250 bar and filling into cascade storage systems.
Access comprehensive contact details of CBG equipment manufacturers and suppliers