11Department of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
2Department of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
3School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahwaz, Iran
In the present study, lightweight expanded clay aggregate (LECA) coated with iron oxide was investigated as a low cost sorbent to remove from wastewater. Iron oxide coated LECA (IOCL) as a new sorbent was tested for its efficiency as sorbent using operational parameters such as contact time, the initial pH of the solutions, and sorbent dosage concentration in batch systems. The adsorption characteristics of the natural LECA and IOCL were investigated through scanning electron microscopy (SEM), X-ray fluorescence spectroscopy (XRF), and X-ray diffraction (XRD) analysis. The maximum sorption efficiency was found to be 96% for IOCL at an initial pH of 6.0 and a sorbent dosage of 5 . The results revealed that the sorption kinetic data were well fitted to a pseudo second–order kinetic model. The experimental data showed that sorption was considerably high on IOCL and the new sorbent is an economical method for Ni (II) removal from effluents and aqueous media.
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