'Association for Promotion of Holistic Approach to Environment'
Abstract
The objective of this study was to characterize the coal fly ash produced from an Indian thermal power station. The fly ash was characterized using particle size distribution, chemical composition, scanning electron microscopy (SEM), X-ray diffraction (XRD) and zeta potential. Investigations were also carried out to study the ability of this fly ash to remove the nickel (Ni2+) ions from aqueous solution. The effects of various experimental conditions such as amount of fly ash, contact time both in stirring condition and steady state condition, initial metal concentration and pH of the solution on the removal efficiency of Ni2+ ions were studied at room temperature. In this study, it was found that fly ash can effectively adsorb Ni2+ ions from aqueous solution under favourable conditions
