Extraction of Phenol from Wastewaters. Choice of Extractant in Coproduction of Phenol and Acetone (Review)

A comparative analysis of the effectiveness of various organic extractants (ethers, acetates, ketones, and alcohols) in phenol extraction from aqueous solutions is given. The differences in the phenol distribution coefficients, moisture contents in the extracts, and amounts of reagent remaining in the aqueous solution are shown. The choice of n-butyl acetate, methyl-tert-butyl and methyl-tert-amyl ethers is substantiated for replacement of imported diisopropyl ether, currently widely used at Russian plants.