Kinetic, Thermodynamic and Isotherm Studies on the Removal of Methylene Blue Dye using Acid Activated Glossocardia linearifolia Stem

Abstract

The research of the present work was to investigate the removal of methylene blue dyes from aqueous solution by using Acid Activated Glossocardia linearifolia Stem (AGLS) carbon. Generally, dyes are organic compounds used as colouring products in chemical, textile, paper, printing, leather, plastics and various food industries. Contaminated waste water passed out from the industry should be treated. In this study, Glossocardia linearifolia Stem carbon was studied for its potential use as an adsorbent for removal of a cationic dye methylene blue. The various factors affecting adsorption, such as initial dye concentration, contact time, adsorbent dose and effect of temperature, were evaluated. The experimental data were fitted into the pseudo-second order kinetic model. The equilibrium of adsorption was modeled by using the Langmuir and Freundlich isotherm models. The result obtained in the present work suggests the AGLS may be utilized as a low cost adsorbent for methylene blue dye removal from aqueous solution.