desulfur
/dɪˈsʌlfər/Definitions
1. verb
to remove sulfur from (a substance)
“The plant was designed to desulfur the gases emitted from the power plant.”
2. noun
the process of removing sulfur from a substance
“The desulfur process is crucial in reducing air pollution.”
3. noun
a substance from which sulfur has been removed
“The desulfurized fuel was used in the cars.”