%0 Journal Article
%T Evaluation and Comparison of Aluminum-Coated Pumice and Zeolite in Arsenic Removal From Water Resources
%A Simin Nasseri
%A Masoumeh Heidari
%J Iranian Journal of Environmental Health Science & Engineering
%D 2012
%I Tehran University of Medical Sciences
%X In this research the potential of aluminum-coated pumice and zeolite in arsenic, As (V) removal was investigated and compared. Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and X-Ray Flaorescence Spectrometry (XRF) were carried out to determine the properties of the adsorbents. Several parameters including adsorbentdosage] pH, contact time, and initial As(V) concentration were studied. The optimum pH obtained for both adsorbents was pH = 7. As(V) adsorption by both adsorbents followed the Freundlich isotherm (for aluminum-coated pumice and zeolite respectively with R2 > 0.98 and R2 > 0.99). The obtained data from kinetics showed that the pseudo-second order model could better explain As(V) adsorption for both aluminum-coated pumice and zeolite (R2 > 0.98 and R2 > 0.99 respectively). Because of low cost, both adsorbents may beeconomically used, but aluminum-coated zeolite showed high efficiency of, due to its porosity and surface area.More than 96% of As(V) with initial concentration of 250 ¦Ìg/L was removed by 10 g/L aluminum-coated zeolite at pH = 7 and in 60 minutes to achieve As(V) concentration of 10 ¦Ìg/L, while only 71% of As(V) could be removed by aluminum-coated pumice.
%K Arsenic adsorption
%K Water resources
%K Aluminum-coated pumice
%K Aluminum-coated zeolite
%U http://www.ijehse.com/content/pdf/1735-2746-9-38.pdf