Utilization of Agriculture waste ( Mustard Straw) for treatment of Industrial waste water

Abstract

Present Study focus on Reactive dye adsorption using activated carbon. Activated carbon of mustard straw was prepared by thermo chemical two step activation process using H₃PO₄, ZnCl₂ and KOH as activation agents. Best sample of prepared AC was used for further study. Make use of this agricultural waste for treatment of industrial effluent is economical and feasible. It was seen that Activated Carbon essentially microporous, BET surface area obtained is 1350 gm/m². The dye adsorption experiments using prepared sample was explored for Reactive Dye. Study of physicochemical characteristics, absorption study, Kinetic study and thermodynamic study is conducted. Experimental data was best fitted with Langmuir Adsorption Isotherm with correlation coefficient of 0.99. from four models under study (Langmuir, Freundlich, Temkin and Dubinin–Radushkevich), which shows monolayer adsorption predominant. The kinetic data were tested for the models of pseudo-first order, pseudo-second order and intraparticle diffusion. The adsorption process follows the pseudo-second order model, which suggests that the process was controlled by chemisorption.