Recovery ofn-Butanol from Dilute Solution by Extraction

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Abstract
A simple but effective strategy is suggested to seek extraction agents for recovery of oxychemicals from dilute aqueous solution. Application of this strategy, which is based on specialization of UNIFAC and UNIFAP, to n-butanol identified highly effective solvents as well as a promising polymer. The best solvent identified, 4-n-butylphenol, has an n-butanol mass distribution coefficient relative to water of up to 25 and selectivities of about 200. The polymer, poly(p-vinylphenol), is somewhat less effective, but there is a good probability of finding related compounds of practical interest.