Dictionary entry overview: What does isle mean? â¢ ISLE (noun) The noun ISLE has 1 sense: 1. a small island Familiarity information: ISLE used as a noun is very rare.
The sulfate ion is SO42- The sulfite ion is SO32- and is more basic that sulfate.
What is the Sulfite process? The sulfite process produces wood pulp resembling pure cellulose fibers. This is done by using various salts of sulfurous acid on the wood pulp in large pressure vessels called digesters wherein the lignin is extracted from the wood chips.