ADSORPTION OF BASIC DYE ON LOW COST TYPHA LATIFOLIA BIOREMEDIATOR STEM CARBON: ISOTHERM, KINETIC AND EQUILIBRIUM STUDIES

To remove the toxic cationic dyes like crystal violet a low-cost abundant adsorbents was investigated. Crystal violet is harmful by inhalation, ingestion and skin contact, and has also been found to cause cancer and severe eye irritation to human beings. Typha latifolia, a variety of broad leaf cattail type bioremediator, stem and leaves are used to prepare the activated carbon which was used as a novel adsorbent. The influence of pH, adsorbent dose and contact time, adsorbent nature and concentration on the selectivity and sensitivity of the removal process was investigated. The kinetics of adsorption process was studied by Lagergren’s pseudo-first order. The feasibility of the sorption was studied using Freundlich and Langmuir isotherms. Various thermodynamic parameters such as the standard Gibbs free energy (ΔG°), standard entropy (ΔS°), and standard enthalpy (ΔH°) were calculated. This readily available low-cost adsorbent could be an excellent alternative for the removal of Basic dyes and organic matter from water and wastewater.