Desulfurization of gaseous fuels with recovery of elemental sulfur: An overview

Emphasis on environmental concerns due to emission of sulfur species through utilization of gaseous fuels containing high sulfur constituents has led to the development of a number of physicochemical and biological processes for desulfurization of gaseous fuels. This article summarizes information on the development of liquid and gaseous redox processes and biological processes for desulfurization of gaseous fuels with concomitant recovery of elemental sulfur and generation of clean gaseous fuels for various applications. The future needs for research have also been incorporated in the article for the development of efficient desulfurization processes for cost-effective management of sulfur emission into the environment.