Revisión de las principales tecnologías de purificación de biogás

Abstract

As it is necessary to propose a sustainable change in Argentinean energy matrix is important to study new sources of energy production to reduce dependency of hydrocarbons. Those compounds are not only in short supply but also its combustion produces greenhouse gases. Biogas is a valuable renewable fuel obtained from organic waste materials solving contamination problems and reducing greenhouse gases. Methane and carbon dioxide are its main components, but biogas also contains contaminants such as hydrogen sulphide and siloxanes. The presence of these compounds different than methane constitutes a problem because they are detrimental to any biogas processing equipment and they generate harmful emissions. Then, it is important to include biogas purification before its final use. This paper reviews the state of the art in biogas purification. A promising purification methods is absorption in aqueous solutions because it is economical and works for carbon dioxide and hydrogen sulphide removal. The paper presents an analysis of biogas purification processes showing its applicability.