Abstract
The removal of copper and cobalt ions from binary metal solutions on zeolite NaX by ion exchange process was investigated. Experiments were conducted in unbaffled glass reactor with a Rushton turbine as a stirrer. The dependence of ion exchange kinetics and the amount exchanged were tested using different initial concentrations of metal ions in mixtures. The results obtained indicate that the removal efficiency depends on the initial heavy metal concentrations in binary solutions. Experimental kinetics data were analysed using Ritchie and Weber-Morris models. According to AARD values, the rate in this study was reaction-controlled.
Highlights
An alarming environmental problem today is pollution by heavy metal ions
The initial concentrations of copper and cobalt in the solutions were determined by Atomic Absorption Spectrometer Perkin Elmer AAnalyst 600 (AAS)
The results obtained in this study lead to the conclusion that zeolite NaX can be used for effective removal of selected heavy metals from effluents containing copper and cobalt ions
Summary
An alarming environmental problem today is pollution by heavy metal ions. Many industries, such as metal plating or mining, discharge their metal-containing effluents into the environment without adequate treatment even though this type of pollution is considered one of the most harmful for the environment.[1]. The adsorption process is found to be a highly effective and economical method for the removal of various heavy metal ions from wastewater.[4] It is a separation process in which the ions exchanged or adsorbed are not chemically altered, and the adsorbent can be recovered and reused by regeneration operations.[5] The used adsorbent needs to be either disposed of or regenerated.[5] Regeneration is important because of adsorbent reusability.
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