Removal and recovery of low salt dye golden yellow LS by liquid-liquid extraction

Abstract

A laboratory study on liquid -liquid extraction of a low salt textile dye namely Golden Yellow LS, an anionic type, was investigated for its removal and recovery from aqueous solution using Tri-<i style="mso-bidi-font-style:normal">n</i>-butyl phosphate (TBP) and hexane. The dye was extracted into the solvent mixture from acidic medium. The extracted dye can be recovered by stripping into alkali solution. The solvent can be reused after stripping the dye. The influence of parameters such as dye concentration, pH, solvent composition, salt concentration, equilibration time, aqu./org.volume ratio, the

percentage removal and recovery of the dye were studied .

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