Enrichment of Biogas for Use as Vehicular Fuel: A Review of the Upgrading Techniques

摘要: 3 Abstract— Biogas, a renewable energy, can be captured, upgraded and used to fuel vehicle as an alternative fossil fuel, thus, reducing greenhouse gas emission. Biogas is environmentally hazardous if emitted directly into the environment. Increasing demand for bio-methane vehicular has called efficient use of waste technology that optimal yet economical. in its raw state contains impurities reduce heating value hence, need enhance it by upgrading bio-methane. Several techniques exist biogas This paper present four techniques; absorption, adsorption, membrane cryogenic techniques, brief theoretical background, advantages operational issues associated with each technique. Keywords—Biogas, Enrichment, Vehicular Environment