Noun
desulfurization (countable and uncountable, plural desulfurizations)
The process of removing sulfur from a substance, such as flue gas or crude.
Prevention methods Technical solutions Many coal-firing power stations use flue-gas desulfurization (FGD) to remove sulfur-containing gases from their stack gases. Source: Internet
Most gypsum sold in Europe comes from flue-gas desulfurization. Source: Internet