Removal and recovery of CI reactive red 195 from effluent by solvent extraction using reverse micelles. Issue 10 (June 2015)

• Record Type: Journal Article
• Authors: Yi, Shixiong; Sun, Sheng; Deng, Yimin; Ye, Ying; Jian, Xinyi
• Is Part Of: Textile research journal. Volume 85:Issue 10(2015)
• Page Start: 1095
• Page End: 1103
• Publication Date: 2015-06
• Subjects: reactive dye -- extraction -- reverse micelles -- dyeing -- cotton; Textile industry -- Periodicals; Textile fabrics -- Periodicals; Textile research -- Periodicals; Textiles et tissus -- Industrie et commerce -- Périodiques; Textiles et tissus -- Périodiques; Textiles et tissus -- Recherche -- Périodiques; Electronic journals; 677.005
• DOI: 10.1177/0040517514559584
• Languages: English
• ISSNs: 0040-5175

Abstract

To reduce environmental pollution by CI reactive red 195, solvent extraction of the dye from water was performed by using reverse micelles prepared from hexadecyltrimethylammonium bromide and amyl alcohol. The effects of dye concentration, surfactant concentration, sodium chloride concentration, and pH on the removal percentage of the dye were investigated. A pseudo-first-order kinetic model and an ion-exchange reaction model were used to fit the experimental data. Ultraviolet-visible absorption spectra and particle size distribution were analyzed to evaluate the state of the dyes in the reverse micelles. In addition, the dyes were recovered by backward extraction and then reused for dyeing cotton fabric. The removal percentage of CI reactive red 195 increased with increasing concentrations of surfactant and sodium chloride. Increasing dye concentration and pH values resulted in less removal of dyes. The dye extraction process could be described by the pseudo-first-order kinetic model and by the ion-exchange reaction equations. The state of the dye in the reverse micelles was similar to that in bulk water. The mean particle diameter of the reverse micelles was 10.8 nm. Dye recovery was improved by adding a counterionic surfactant. The recovered CI reactive red 195 had a good dyeing property for cotton fabric.