Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

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Thermodynamic and Kinetic Studies for Adsorption of Methyl Violet Dye on to Creeson Seeds

Author(s): Huda N Al-Ani

The present investigation describes the adsorption of Methyl Violet (MV) dye onto Creeson (Lepidium sativum) (LS) seeds known as Garden cress from its aqueous solution, has been known centuries ago in eastern regions then spread worldwide. The using of creeson seeds as adsorbent for the removal MV dye was investigated in aqueous solution. Effect of experimental coefficient like connection time, primary concentration of adsorbate (MV) and amount of adsorbent seeds (LS) dose and temperature were evaluated to obtain the optimum condition for adsorption of MV onto Cresson seeds using batch adsorption. The adsorption information were mathematically analyzed using isotherms of adsorption like Langmuir, Freundlich and Dubinin-Radushkevich isotherms to study adsorption mechanism of MV dye onto creeson seed. The isotherms of adsorption were advanced and equilibrium data adjusted well to Freundlich isotherm model. The studies of kinetic indicated that the process of adsorption followed the model of second-order kinetic. The quantities (ΔG0, ΔH0 and ΔS0) were estimated and the obtained ΔG° negative values indicate a spontaneous adsorption process, ΔH° value obtained positive designate to endothermic properties of adsorption process and ΔS° value obtained positive during the adsorption indicate increased randomness.

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