Equilibrium and Kinetics Study of Reactive Blue 19 Dye from Aqueous Solution by a Rapid Adsorption Approach to Degradation

Subject Areas : Polymer

Elham Keshmirizadeh ¹ , Marzieh Shomeilzadeh ²

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Received: 2015-11-16 Accepted : 2015-11-16 Published : 2013-07-01

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Abstract :

The present investigation assesses the application of ceric sulfate for the removal of the colorant reactive blue19 (R.B19) from synthetic wastewater. The adsorption characteristics and dye removal efficiency of adsorbent have been determined by investigating factors such as effect of pH (pHOptimum<2), effect of concentration of the dye(up to 1000mg/L), dose of adsorbent( up to 0.7g/L) and contact time(under 120 sec). Under the optimized conditions, the percentage of color removal efficiency increased up to 97%. Langmuir, Freundlich and Tempkin isotherm models have been used to evaluate the ongoing adsorption. Langmuir equation shows higher conformity than the other two. On the basis of pseudo first order, pseudo second order and intra particle diffusion kinetic equations, different kinetic parameters have been obtained. From the kinetic experiment data, it was found that the sorption process follows the pseudo second order.