Adsorption of chromium ion by acid activated abutilon indicum-kinetic, mechanistic, thermodynamic and equilibrium studies

The research of the present work was to investigate the removal of Chromium ion from aqueous solution by using Abutilon Indicum (AAAI). Generally, metal ions are used in chemical, textile, paper, printing, leather, plastics and various food industries. The need for the treatment of metal ion contaminated waste water passed out from the industry. In this study, Abutilon Indicum was studied for its potential use as an adsorbent for removal of Chromium ions. The various factors affecting adsorption, such as initial metal ion 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 objective of the present work suggests the AAAI may be utilized as a low cost adsorbent for Chromium ions removal from aqueous solution.