Abstract
Wastes from landfills originate from many spheres of life. These wastes are produced as a result of human activities
either domestically or industrially. Wastes are generally regarded as by-products nevertheless; they could be useful
resources in wrong hands or location. Due to the fact that biogas could be produced from two main sources such as
landfills and digesters chambers [1]. It is important to critically look into the biodegradable materials that ends up as
wastes on our landfills because they could be converted into biogas as a result of the high concentration of carbon
and hydrogen contained in such wastes and majority of which are from agricultural and domestic locations.
Recently, producing biogas is not good enough for some applications therefore the need to upgrade it for usage as a
vehicular fuel [2]. This paper reviews landfill waste categorization, biogas production processes, biogas to
biomethane upgrade, and biomethane utilization.