The effectiveness of synthetic aqueous Methylene Blue dye adhering to Activated Carbon Merremia emarginata (ACME) was investigated in this study. The effects of important variables on the outcomes, such as agitation time, pH, adsorbent dosage, and other ionic concentration, were assessed. It has actually been done to evaluate the equilibrium isotherm models, thermodynamic variables, and kinetic data. Adsorption equilibrium isotherms were expressed using the Freundlich and Langmuir adsorption models, although it was found that the Langmuir model more accurately reflected the experimental results. The pseudo second order kinetic model can also make the adsorption more understandable. The goal of the survey was to determine whether it was possible to remove Methylene Blue dye from synthetic aqueous solution utilizing ACME as a cheap adsorbent.

In this study, preparation of adsorbent from Merremia emarginata stem and its application for the adsorption of chromium (VI) from aqueous solution was studied. The batch adsorption experiments were carried out to study the effect of contact time, adsorbent dose, effect of pH and effect of other ionic concentration on the removal of chromium (VI) by activated carbon. The equilibrium adsorption data were analyzed by Freundlich and Langmuir isotherm models. The thermodynamic parameters such as change in free energy (G°), enthalpy (H°) and entropy (S°) were determined. Kinetic modeling of the process of removal was carried out and the process of removal was found to follow a pseudo-second order model, Elovich model and Intraparticle diffusion model the value of rate constant for adsorption process was calculated. This study indicated that activated carbon Merremia emarginata, which is inexpensive, has efficiency to remove chromium (VI) from aqueous solution.