Adsorption Kinetic and Isotherm Studies of Azure-A on Various Activated Carbons Derived from Low Cost Agricultural WastesAuthor : Pandi Muthuraman, Mayathevar Rajamani and Arulanantham Xavier
Volume 6 No.2 July-December 2017 pp 19-35
The present study narrates the eminent role of agricultural wastes as adsorbents viz., Sorghum Vulgare Carbon (SVC), Zea Mays Carbon (ZMC), Sorghum Vulgare Varity Carbon (SVVC), Ceiba Peutandra Carbon (CPC), Projobis Juliflora Carbon (PJC) for the removal of Azure-A (AA) dye from waste water. Experimental parameters such an effect of initialconcentration, contact time, dose, pH and particle size have been analyzed. The experimental results are there analyzed using Freundlich, Langmuir, Temkin, Redlich–Peterson and Dubinin–Radushkevich isotherm models. Multiple kinetic equations (first order, pseudo first order and pseudo second order) were applied to the adsorption kinetics of AA on various activated carbons. Surface morphology of the adsorbents before and after adsorption is studied by Scanning Electron Microscopy (SEM-Edax). FT-IR analyses revealed the presence of functional groups of dye on the adsorbents. It is inferred from the experimental result that the activated carbons (SVC, ZMC, SVVC, CPC and PJC) from agricultural wastes can be applied as an adsorbent in the removal of AA dye from waste water.
Azure-A, Low Cost Carbon, Kinetics, Isotherm, SEM-Edax, Adsorption