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Adsorption interaction of Turquoise blue dye onto microwave assisted zinc chloride activated carbon from aqueous solution was investigated. Activated carbons were prepared from pods of  Delonix regia . Carbon prepared was designated as MWZAC (Microwave assisted Zinc chloride Activated Carbon). The characteristics of the MWZAC were determined by BET analysis, XRD, FTIR and pH ZPC.  Batch mode adsorption experiments were carried out. Influence of the parameters such as Dose of the adsorbent, agitation time, initial dye concentration, pH of the solution and temperature on adsorption were studied. Kinetics of the system was studied with linearised forms of Lagergren, Ho and Webber Morris models. Equilibrium data were fitted with Langmuir, Freundlich, Tempkin and Dubinin-Raduskevich isotherms. The order of best describing isotherms was given based on R 2  value. Thermodynamic parameters such as ΔH°, ΔS° and ΔG° were determined using Vant Hoff plots. The exhausted MWZAC was regenerated by desorption processes using 0.2 M HCl, 0.2 M NaOH and distilled water.

Adsorption of Turquoise Blue Dye from Aqueous Solution using Microwave Assisted Zinc Chloride Activated Carbon Prepared from Delonix Regia Pods