Potential of Plant Oils as Liquid Membrane to Treat Textile Dyeing Effluents


Authors : Hima M U , K.J. Sosamony

Volume/Issue : Volume 2 - 2017, Issue 4 - April

Google Scholar : https://goo.gl/jNfrJH

Scribd : https://goo.gl/oDGtzf

Thomson Reuters ResearcherID : https://goo.gl/3bkzwv

This study explores “Selective Liquid Membrane Technique” to recover or to remove dyes from textile wastewater using plant oils. The important parameters governing the extraction behaviour of dyes have been investigated such as pH of wastewater, temperature, mixing time, and type of plant oil. The experiment was carried out as laboratory procedures on BLUE M R dye with five plant oils (coconut, mustard, palm, sunflower and used cooking oil). The study revealed that the dye removal efficiency increased as the temperature was increased. Under low pH, the oil splits into two components and when shaken with the dye solution resulted in significant dye removal from the solution. When the dye solution was shaken with the oil under alkaline conditions, it formed a colloidal solution containing the oil plus the dye, and there separation was very difficult. However, the observed reduction in the absorbance under alkaline conditions can be attributed to the dye components losing some of their original color or producing different colors that were not effectively measured at their respective wavelengths. The optimum conditions for the dye removal for various oils were at a pH of 2 and a temperature of 55 °C. The used cooking oil achieved the highest dye removal efficiency for blue dye (77.08%) followed by palm oil (73.34%).

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