usage of Iranian scoria for copper andcadmium removal from aqueous solutions
来源期刊：中南大学学报(英文版)2015年第10期
论文作者：Sara Seyfi Amir Reza Azadmehr Mahdi Gharabaghi Abbas Maghsoudi
文章页码：3760 - 3769
Key words：scoria; adsorption; removal; factorial design
Abstract: the competitive removal of copper and cadmium from aqueous solutions using scoria has been investigated. Scoria was characterized by various methods, such as XRD, XRF, FT-IR and SEM.the results show that scoria sample contained augite, enstatite, diopside, and olivine. These minerals were separated from each other and each mineral was then subjected to the adsorption experiments. It was found that the main absorbent constituent in scoria was augite. Finally, statistical experimental method was used to optimization of adsorption conditions (Initial concentration of copper and cadmium ions, the amount of scoria and temperature) for removal of Cu (II) and Cd (II) ions from solution in optimum conditions. The optimumconditionsare obtainedas follows: concentrations of Cu (II) and Cd (II) of 400×10-6 and 554×10-6, respectively; amount of scoria of 7 g; temperature of 38 °C. Under these conditions Cu (II) and Cd (II) ions are absorbedonto the scoria more than 79% and 16%, respectively.
Sara Seyfi1, Amir Reza Azadmehr1, Mahdi Gharabaghi2, Abbas Maghsoudi1
(1. Department of Mining & Metallurgical Engineering, Amirkabir University of Technology,
424 Hafez Ave, 15875-4413, Tehran, Iran;
2. School of Mining Engineering, College of Engineering, University of Tehran,
North Kargarst, 515-14395, Tehran, Iran)
Abstract:the competitive removal of copper and cadmium from aqueous solutions using scoria has been investigated. Scoria was characterized by various methods, such as XRD, XRF, FT-IR and SEM.the results show that scoria sample contained augite, enstatite, diopside, and olivine. These minerals were separated from each other and each mineral was then subjected to the adsorption experiments. It was found that the main absorbent constituent in scoria was augite. Finally, statistical experimental method was used to optimization of adsorption conditions (Initial concentration of copper and cadmium ions, the amount of scoria and temperature) for removal of Cu (II) and Cd (II) ions from solution in optimum conditions. The optimumconditionsare obtainedas follows: concentrations of Cu (II) and Cd (II) of 400×10-6 and 554×10-6, respectively; amount of scoria of 7 g; temperature of 38 °C. Under these conditions Cu (II) and Cd (II) ions are absorbedonto the scoria more than 79% and 16%, respectively.
Key words:scoria; adsorption; removal; factorial design
