Fixed-bed column adsorptive removal of Cr(VI) using silver oxide/sawdust nanocomposite

Publish Year: 1392
نوع سند: مقاله کنفرانسی
زبان: English
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NANOO01_135

تاریخ نمایه سازی: 9 تیر 1393

Abstract:

This study describes removal of Cr(VI) ions from aqueous solutions using silver oxide sawdust nanocomposite (Ag2O/SD NC) prepared by chemical precipitation rout. ScanningElectron Microscopy (SEM) and X-ray Diffraction (XRD) techniques were used for characterization of the prepared NC. The effect of various parameters such as feed concentration,feed flow rate and adsorbent amount on the breakthrough curves (BTC) was investigated. Twowell-known column adsorption kinetics models including Thomas and Bed Depth Service Time (BDST) were applied to fitting the non- equilibrium experimental data. Desorption studiesreveals that recovery of uploaded Cr(VI) from Ag2O/SD NC or exhausted column regenerationcan readily be achieved using a dilute solution of NaOH.

Authors

F Ostovar

MSc Student, Department of Chemistry, Faculty of Science, University of Guilan,

R Ansari

Professor, Department of Chemistry, Faculty of Science, University of Guilan,

H Fallah Moafi

Assistant Professor, Department of Chemistry, Faculty of Science, University of Guilan,

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