Cloud Point Extraction of Remazol Turquoise Blue G-133 Dye Using Non-Ionic Surfactant
Author : Duraimurugan Alias Saravanan, Mohamedsani Abdulkadir Aba Gissaa, J Saravanan and Muktar Abdu Kalifa
Abstract :
In the present study, the removal of color from wastewater containing Remazol Turquoise Blue G-133 dye (copper phthalocyanine reactive dye) by surfactant mediated cloud point extraction (CPE) in batch mode using Triton X-114 (TX-114) as non-ionic surfactant is discussed. Cloud point extraction is a micelle mediated separation process based on clouding phenomena of non-ionic surfactant. The solute concentrations 25 ppm, 50 ppm, and 75 ppm, and surfactant concentration of about 0.01 M to 0.1 M were used. The physical properties such as density, refractive index, viscosity of surfactant rich and surfactant dilute phases were measured. The operating temperatures are selected based on the cloud point temperature and the performance of the cloud point extraction is analyzed using the phase volume ratio, preconcentration factor, distribution coefficient, and extraction efficiency at different temperatures. The feasibility of the CPE process is also studied using the thermodynamic parameters. The negative value of ∆G0 signifies the spontaneous phenomena of dye solubilization process. The positive values of ∆H0 points out the endothermic nature dye solubilization process, and the positive values of ∆S0 indicates that the dye molecules are structured in a more random fashion on the mantle of aqueous hydrophilic chains.
Keywords :
Remazol turquoise blue G-133, triton X-114, cloud point temperature, cloud point extraction
