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ABSTRACT
Adsorption, which is an alternative process for heavy metal removal involves the use of commercial activated carbon as adsorbent for wastewater treatment. The aim of this study is to investigate the potential of activated Rice husk for the removal of Copper from wastewater Rice husk was prepared and activated using industrial furnace. It was thereafter activated using steam before it was sieved in order to determine the particle size. The activated rice husk was then characterized using Fourier transform infrared (FTIR), scanning electron microscope (SEM) X-ray fluorescence (XRF). Batch adsorption technique was thereafter employed to investigate the effect of adsorption variables, namely: adsorbent dose and contact time. Data obtained were then analyzed using equilibrium isotherm and kinetic models, namely: Langmuir, Freundlich, Pseudo-First Order and Pseudo-Second Order. Results obtained revealed that O-H stretching mode of primary alcohol group is responsible for metal ion adsorption onto activated rice husk. The computed coefficient of determination of 0.6524 and 0.9324 revealed that the adsorption of copper (II) ions onto activated rice husk is best described by Langmuir isotherm model and pseudo-first order kinetic model
