Abstract:
Textile dyes comprise a very diverse group of coloring agents usually utilized to color a vast range of textile products. These coloring agents remain for a longer period even in the presence of heat and light. The discharge of such untreated effluents from textile industry causes serious environmental problems. The purpose of this work is to investigate the feasibility of removing navy blue (NB) dye from textile dye wastewater using a bentonite clay based geopolymer (BCG). The synthesized BCG sample was characterized with the aid of SEM, BET, XRD and EDS analysis. To optimize the process of removing navy blue (NB) dye onto geopolymer GP, different parameters were studied such as, the effect of pH, initial dye concentration, adsorbent dosage, contact time and temperature. The results showed that the maximum removal efficiency of NB was found in the acidic environment. Best removal efficiency was obtained with 0.4 g geopolymer at pH 4.5 and 2 hrs contact time. Kinetic investigations showed that NB dye adsorption follow pseudo second order kinetics, with rate constant of 0.001815 g/ (mg. min). The adsorption equilibrium data best fitted with Langmuir isotherm model and adsorption capacity was found to be 5.3760 mg /g. The thermodynamic study indicated that the adsorption was favorable, endothermic and spontaneous.
Page(s):
0-0
DOI:
DOI not available
Published:
Journal: Sixth International Conference on Sustainability in Process Industries (SPI) 19-20 Octover 2022 (Book of Abstracts), Volume: 0, Issue: 0, Year: 2022