Authors:Â Suryakala Duvvuri, Md. Asif, D. Rama murthy, K. Rama Krishna
Abstract:Â A surfactant mediated cloud point extraction (CPE) procedure has been developed to remove color from wastewater containing bromo cresol purple (BCP), using triton x-100 (TX-100) a nonionic surfactant. The effect of the concentration of the surfactant, pH, temperature and salt concentration on the different concentrations of dye have been studied and optimum conditions were obtained for the removal of bromo cresol purple. The concentration of BCP in the dilute phase was measured at 425nm using UV-Vis spectrophotometer. It was found that the separation of phases was complete and the recovery of BCP was very effective in the presence of NaCl as an electrolyte. The results showed that up to 96% of BCP can quantitatively be removed by Cloud point extraction procedure in a single extraction using optimum conditions. Langmuir adsorption isotherms were calculated. The thermodynamic studies have also been conducted.
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