Abstract
In this study, the adsorption of Copper Cu (II) and methyl Orange (MO) from aqueous solution, on Tamanrasset’s unmodified and modified Kaolinite clay which as low cost adsorbents, was studied using batch experiments. The adsorption study includes both equilibrium adsorption isotherms, kinetics and thermodynamics study. For the characterization of the adsorbent several properties are determined such as pH, the Specific Surface Area, the Point of Zero Charge and the Cation Exchange Capacity. Indeed, various parameters were investigated such as contact time, initial metal and dye concentration, mass of solid, pH of the solution and temperature. The adsorption process as batch study was investigated under the previews experimental parameters.
Highlights
The extensive use of chemicals in developing and developed countries over the last century increased the amount of dyes and heavy metals which is released into surface and underground water through discharges of wastewater produced from metallurgical, mining, chemical, research laboratories, printing paper and battery manufacturing industries [1, 2]
The PZC value or natural kaolinite was8.9 this value indicates that the adsorption of copper and methyl orange by untreated kaolinite will occur at pH ≥ 8.9
The thermodynamics and kinetic study of the removal of copper (II) and methyl orange from aqueous solution using natural clay and its composites has been investigated in this work
Summary
The extensive use of chemicals in developing and developed countries over the last century increased the amount of dyes and heavy metals which is released into surface and underground water through discharges of wastewater produced from metallurgical, mining, chemical, research laboratories, printing paper and battery manufacturing industries [1, 2]. Copper (Cu (II)) is extremely toxic, not biodegradable and it accumulated in living organisms, and may pose a threat to human beings. Copper ions is considered as vital transition metal ion because of its necessity in biological activities of living organism, whereas at certain concentration, it causes serious damages to human health and environment [3–5]. Methyl orange (MO) is an azo soluble dye, shows low biodegradability and is soluble in water it is difficult to remove from aqueous solutions by common. Clay and Clay Minerals water purification methods. As other dyes MO is toxic and carcinogenic, posing serious hazards to humans and the environment [6]. Purification of water can be achieved by physicochemical and biological methods. Biological process includes biodegradation or bioremediation [21], phycoremediation [22]. Adsorption method is more effective, economic with high potential and low energy consumption specially it has the advantage of the utilization of abundant with low cost adsorbents
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