A Parametric Study of Methylene Blue Adsorption Using Low-cost Adsorbent

B. Bej; S. Samanta; S. Manna; K. Rana4

doi:10.37591/jotcsta.v10i3.7889

Abstract

This research focused on the adsorptive capacity of activated carbonaceous substance made from the peel of Spanish cherries to remove methylene blue dye from wastewater. Through batch adsorption tests, the impact of several variables on the percentage of dye removal was examined. These variables included adsorbent preparation temperature, adsorbent dosages, initial concentration of dye solution, process time, pH of dye solution, and operation temperature. It was found that using 1 g/100 ml adsorbent (carbonization temperature 650°C) at pH 7 and 30°C for 1 hour, maximum dye removal of 81.5% was achieved. The moisture content and the BET surface area of this low-cost adsorbent were found to be 9.22% and 380 m2/gm, respectively. The Freundlich adsorption and Langmuir adsorption isotherm models were used to verify the experimental findings. The maximum adsorption capacity for monolayer coverage was determined to be 114.94 mg/gm, according to the correlation coefficient (R2) values, which showed that the model that best matched the experimental data was the Langmuir adsorption isotherm. The experimental data were also shown to closely reflect the pseudo-second-order kinetics using adsorption kinetic investigations. According to the findings, methylene blue can be effectively removed from wastewater by using the peel of Spanish cherry fruits as an adsorbent.

Abstract

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