DefinePK

Abstract

The use of low cost and eco-friendly adsorbent has been explored as alternatives to the current expensive pollutants removal methods. In this study, biochar from coconut frond (BCF), an agricultural waste was investigated as an adsorbent for the removal of cationic dye, Malachite green (MG) from aqueous solution. Factors affecting dye adsorption such as adsorbent dosage, initial dye concentration, contact time and pH were investigated in a batch mode. BCF was prepared at a carbonization temperature of 800°C which resulted in the best percentage of MG removal (> 99%) at the optimized condition. The Langmuir and Freundlich isotherms have been employed to study the adsorption mechanism and favorability. The adsorption of MG dye using BCF was best explained based on the Langmuir model with the adsorption capacity of 126.58 mg/g. The result showed that the BCF has the potential as an efficient adsorbent for MG dye removal in aqueous solution.