Removal of Tetrachloroethylene by copper-coated pumice
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2015, Vol 9, Issue 10
Abstract
Tetrachloroethylene is being used increasingly, which is led to be a crucial micropollutant in the environment.The aim of this empirical study was to evaluate the effectiveness of copper-impregnated pumice in the removal of tetrachloroethylenefrom aqueous solution. The study was carried out empericaly, used impregnated granular pumice with a mesh of 4 (4.8mm),that were processed by copper ion, using copper sulfate. The free pumice and copper-impregnated pumice were prepared in doses of 1,2 and 3 g/L, and then,it has beenexpoused on the samples includingtetrachloroethylenein three concentrations (25, 75 and 125 mg/L) considering four retention times (20,40,60 and 80 min) and three pH levels (3,7 and 11).The results of SEM imaging of free pumice and copper-impregnated pumice sample with accuracies of 10 and 100 ?m showed that the structure of the SEM image of free pumice with an accuracy of 100 ?m involved pores with relatively homogeneous dimensions which indicates the extended structure of the pumice. The removal rate of tetrachloroethylenedepends on adsorbent dose and tetrachloroethyleneconcentration. The maximum capacity of tetrachloroethyleneremoval by free pumice and copper-impregnated pumice were achieved as 105.61 and 120.86 mg/g respectively. The minimum and maximum removal rates of tetrachloroethyleneby free and copper-impregnated pumice were 10.7 and 98.4%; 80 and 99.7%, respectively. Comparing both forms of pumice bed, could be concluded that although the removal rate of copperimpregnated pumice was more than free pumice but the difference is not significant (P value>0.05).
Authors and Affiliations
Ali Almasi| Department of Environmental Heath Engineering, Kermanshah University of Medical Sciences, Kermanshah, Iran, Mohamad Soltanian| Department of Environmental Heath Engineering, Kermanshah University of Medical Sciences, Kermanshah, Iran, Fateme Asadi *| Department of Environmental Heath Engineering, Kermanshah University of Medical Sciences, Kermanshah, Iran, email: f_asadi56@yahoo.com, Ahmad Mohamadi| Department of Environmental Heath Engineering, Kermanshah University of Medical Sciences, Kermanshah, Iran, Kiomars Sharafi| Department of Environmental Heath Engineering, Kermanshah University of Medical Sciences, Kermanshah, Iran, Department of Environmental Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
Keywords
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