The Kinetics of Basic Dye Removal Using Palm-Fruit Bunch

Abstract

Equilibrium and kinetic studies were carried out during the adsorption of Basic Yellow dye on palm-fruit bunch adsorbent. The adsorbent is a cheap, abundant waste in tropical countries and has a monolayer equilibrium capacity of 320 mg dye/(g palm-fruit bunch). The effect of particle size, contact time and temperature were studied. The equilibrium data were analyzed using the Langmuir, Freundlich and Redlich–Peterson adsorption models. The applicability of the Lagergren kinetic model has also been investigated. The adsorption isotherm rate constants demonstrate that palm-fruit bunch is a favourable adsorbent. The removal process follows first-order kinetics. The temperature dependence indicates the endothermic nature of the process.