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In this study, cobalt oxide (Co3O4) was prepared by thermolysis of cobalt (II) oxalate at ???????????? This oxide was characterized by IR spectroscopy, XRD (X-ray diffraction) and SEM (scanning electron microscopy). The adsorption of phenol and lead (II) ions, both singly and in combination, by obtained and characterized Co3O4 was studied in batch system. Kinetic and equilibrium experiments were conducted to study the effects of solid : liquid ratio, pH, contact time and initial concentration of the pollutants. Th...

In this study, the adsorption behavior of natural zeolites (clinoptilolite) with respect to Cs+ has been studied in order to consider its application to purity radioactive wastewater. The natural zeolite was activated in two steps. In the first step with a 2 M HCl solution and then with 2 M NaOH solution. The natural and the chemical treated zeolite was subjected to FTIR spectroscopy, XRD (X-ray diffraction) and SEM (scanning electron microscopy) and EDX analysis. The batch method and column studies have been empl...

The aim of this work is the study of Congo Red removal from water by adsorption onto Zn4Al-CO3 type layered double hydroxide prepared from zinc ash. The preparation consist in dissolution of zinc ash with hydrochloric acid followed by synthesis of LDH by co-precipitation of zinc chloride with aluminum salt in alkaline media. The prepared LDH and the calcined product were utilized as adsorbents of azo dye Congo Red from water. Despite that the materials were prepared from a waste, their performances as adsorbents a...

Palladium is one of the precious metals which have great economic importance. It is used in many fields such as electrical and electronic industries, corrosion resistant materials, and jewelry due to their specific physical and chemical properties, catalysts in various chemical processes. Due to its importance and high price, it is essential to develop efficient recovery methods for this element especially from water containing trace amount of Pd. Therefore in this work we report studies regarding the removal of P...