Kinetic and thermodynamic study of adsorption of methylene blue and rhodamine B on adsorbent prepared from Hyptis suaveolens (Vilayti Tulsi) |
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Authors: | Sandeep D Pardeshi Jayant P Sonar A M Zine S N Thore |
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Institution: | 2. Department of Chemistry, Vinayakrao Patil Mahavidyalaya, Vaijapur, Maharashtra, 423701, India 1. Department of Chemistry, Deogiri College, Aurangabad, Maharashtra, 431005, India
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Abstract: | In the present study adsorption behavior of methylene blue and rhodamine B from aqueous solution using adsorbent prepared from “Hyptis suaveolens” (Vilayti Tulsi) was investigated as a function of parameters such as initial concentration, adsorbent dose, pH, contact time and temperature. The adsorption process was pH dependent. The thermodynamic parameters such as $ {{\Updelta}}G,{{\Updelta}}H \,{\text{and}} \,{{\Updelta}}S $ were calculated to investigate the nature of adsorption, their values indicate that the adsorption process is favorable. The first-order, second-order and intra-particle diffusion models were used to describe the kinetic parameter. The Freundlich and Langmuir adsorption models were applied to describe the adsorption equilibrium. Column study was conducted for both dyes. |
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