What does desulfurisation mean?
Desulfurisation is the process of removing sulfur or sulfur-containing compounds from a substance, most often petroleum products, coal, natural gas, or industrial exhaust gases. In fuel refining, it reduces sulfur emissions and helps prevent harmful sulfur dioxide from forming when fuels burn; in power stations, it can refer to treating flue gases before they enter the atmosphere. The word is formal and technical, and is closely associated with cleaner energy, efficient combustion, and air-quality regulation. Although the concept is scientific, the vocabulary is accessible once the element sulfur is understood. The spelling desulfurisation is especially common in British English, while desulfurization is the usual American form; desulphurisation is also a recognized variant. The term is useful because it names a specific process behind broad claims about cleaner fuel and pollution control, while distinguishing chemical removal of sulfur from unrelated forms of filtration or purification.
nounThe process of removing sulfur or sulfur-containing compounds from a substance, especially petroleum, natural gas, coal, or exhaust gases. In fuels, it reduces sulfur content and limits the formation of sulfur dioxide when the fuel is burned.
- The removal of sulfur or sulfur-containing compounds from fuels, industrial materials, or gases.
"The refinery uses desulfurisation to produce cleaner-burning fuel for power stations and industrial plants."
"Advanced desulfurisation techniques can make heavy fuel oil cleaner and easier to burn."
"Sulfur-capture equipment at the plant is part of its wider desulfurisation programme."
The plural is uncommon because the word normally names a general process rather than a countable process.
"Several different desulfurisations can be applied before the fuel reaches the distributor."
Desulfurisation is the chemical clean-up that keeps sulfur dioxide from turning a fuel's useful flame into a public-health problem.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does desulfurisation come from?
The word is formed from the prefix de-, the element name sulfur, and the suffix -isation. The prefix indicates removal, while -isation creates a noun denoting a process or the result of that process. Desulfurisation belongs to modern scientific and industrial vocabulary, with desulfurization and desulphurisation reflecting the principal British and American spelling traditions.
Related word forms
How desulfurisation is actually used
Chiefly a formal scientific and industrial term. In general prose, “sulfur removal” may be easier to understand, while the formal term is useful when discussing a specific refining or pollution-control process.
Easily confused with desulfurisation
This is an alternative spelling of the same process, using the traditional British spelling “sulph-” rather than “sulfur-”.
Hydrodesulfurisation is a specific form of desulfurisation that uses hydrogen to remove sulfur, usually from petroleum products.