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Enhanced extraction of 2,3‐butanediol by medley solvent of salt and n ‐butanol from aqueous solution
Author(s) -
Wu YanYang,
Chen Kui,
Zhu JiaWen,
Wu Bin,
Ji Lijun,
Shen YaLing
Publication year - 2014
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21831
Subject(s) - salt (chemistry) , butanol , extraction (chemistry) , solvent , chemistry , ternary operation , partition coefficient , aqueous solution , yield (engineering) , aqueous two phase system , chromatography , phase (matter) , butanediol , n butanol , ternary numeral system , 2,3 butanediol , analytical chemistry (journal) , materials science , ethanol , organic chemistry , computer science , fermentation , metallurgy , programming language
Enhanced extraction of 2,3‐butanediol by adding salt into solvent n ‐butanol has been studied in this paper. Ternary phase diagrams for 2,3‐butanediol + water + salt have been determined. The influences of phase ratio, type of salts and salt content on distribution coefficient and selectivity have also been investigated systematically. With phase ratio of 0.75 (w/w) and salt content of K 2 HPO 4 of 25% (w/w), the distribution coefficient, separation factors and recovery yield in a single extraction process by n ‐butanol can reach 5.2%, 34% and 80%, respectively. Salt addition can greatly enlarge the two phase region and enhance extraction simultaneously in this system.