A Study on adsorption of Phenol red dye and Chromium (VI) metal ion using activated carbon derived from Lantana camara with the activation of potassium hydroxide.

Manju Dubey; Prof. Dr. Anita Chowbey

doi:10.37591/jonet.v13i1.7502

Abstract

Commercial activated carbons are expensive to produce and regenerate, it is essential to produce activatedcarbon using low-cost raw materials and methods. This study's goal is to demonstrate the possible adsorptionproperties of activated carbon made from Lantana camara for the removal of dyes and metal ions fromaqueous solutions. In this study, activated carbon from Lantana camara stems was obtained through a one-step chemical activation procedure using potassium hydroxide KOH. The surface properties such as surfacearea, pore volume and pore size distribution were obtained by BET surface analysis and the Porous structurewere visualize by SEM analysis. The FTIR spectrum of the derived activated carbon is also depicted. Effect ofconcentration (50, 100, 150, 200, 250, and 300 mg/L) and contact time of dye and metals were observed onvaried adsorbent dose of 0.1 to 0.5 g/50 ml for phenol red dye and from 0.2 to 0.8 g/50 ml for chromium metal.The sample's surface area varied by 1296.23 m2/g, 1132.12 m2/g, and 2222.76 m2/g, with the DR microporehaving the highest pore volume (0.879 cc/g), respectively. The KOH-activated Lantana adsorbent particlesproduced a specific wave in the range of 700 to 4000cm-1 in the FTIR. As the initial quantity of colour andmetal rises, the % adsorption falls. The ideal doses for the retention of phenol red and Cr (VI) were reportedas 0.3 g/50 ml and 0.5 g/50 ml, respectively. The mesoporous classification of the activated carbons that werechemically activated with KOH and shown high results for surface area and pore size supports their potentialfor use in the removal of metal and dye contaminants.