The Kinetics of Basic Dye Removal using Palm-fruit Bunch

摘要

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 capa-city 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 Lnngmuir, Freundlich and Redlich-Peterson adsorption models. The applicabil-ity of the Lngergren kinetic model has also been investigated. The adsorption isotherm rate constants demonstrate that palm-fruit bunch is a favourable adsorb-ent. The removal process follows first-order kinetics.The temperature dependence indicates the endothermic nature of the process.