Sulfur adsorption is a recently commercialized technology that reduces costs for
removal of sulfur from gasoline. Laboratory tests have also shown that the technology
may be appropriate for diesel desulfurization. Rather than adding hydrogen, sulfur is
removed through the chemical process of adsorption. Adsorption does not require
substantial hydrogen inputs and takes place at much lower temperature and pressure
than hydrotreating technologies, thus requiring lower energy inputs. Sulfur adsorption
significantly reduces operating costs, and potentially capital costs as well.