The typical approaches to organo-sulfur removal can be
categorized as chemical reaction technologies and adsorptive
technologies. Chemical reaction approaches include hydrodesulfurization
(HDS) and alkylation. Most commercial large-scale
applications use HDS; therefore, substantial process and catalyst
optimization has occurred. In this process, HDS catalysts partially
or completely hydrogenate the sulfur-bearing molecules, resulting
in a release of sulfur as H2S [46–49].