Removal of Basic Yellow 51 Dye by Using Ion Exchange Resin Obtained by Modification of Byproduct Sugar Beet Pulp

Abstract

The removal of dyestuffs, which are an important pollutant group in textile wastewater, is an important environmental problem. Various chemical and physicochemical methods are used in the purification of these wastewaters. Recently, it is known that a wide variety of agricultural materials and their modified products have been investigated for dye removal using the adsorption process, which is a promising removal method. In this study, the removal of Basic Yellow 51 dyestuff from aqueous solutions of sugar beet pulp, first activated by saponification with NaOH solution and then modified by heating with citric acid, was investigated. For this purpose, the effects of parameters such as solution pH, sorbent dose, initial concentration, contact time and temperature on the sorption of Basic Yellow 51 dye to modified sugar beet pulp were investigated. As a result, it was found that the functional groups of pectin and cellulose substances in sugar beet pulp, which are effective in sorption, were activated and their number increased, thereby increasing the dye removal efficiency. It was found that sorption efficiency increased with increasing contact time and temperature and decreased with increasing initial concentration. It was determined that the sorption equilibrium data fit the Langmuir isotherm better and that the sorption process was endothermic and spontaneous. The q(e) value was obtained from the Langmuir isotherm as approximately 200 mg/g. As a final result, it has been demonstrated that the modified product of sugar beet pulp can be used effectively in removing basic dyes from the aquatic environment.