Title of article :
Highly Efficient Adsorbent for Removal of Heavy Metal Ions Modified by a Novel Schiff Base Ligand
Author/Authors :
Amrollahi, Mohsen Department of Environmental Health Engineering - Shahid Sadoughi University of Medical Sciences, Yazd , Ghaneian, Mohammad Taghi Department of Environmental Health Engineering - Shahid Sadoughi University of Medical Sciences, Yazd , Tabatabaee, Masoumeh Department of chemistry - Yazd Branch - Islamic Azad University, Yazd , Ehrampoush, Mohammad Hassan Department of Environmental Health Engineering - Shahid Sadoughi University of Medical Sciences, Yazd
Abstract :
An alomina-based nano adsorbent was prepared by modification of the
external surface of γ-alumina (γ-Al2O3) nanoparticles with functional
groups of a new Schiff base 4-[(2-hydroxy-3-methoxy-benzylidene)-
amino]-5-methyl-2,4-dihydro-[1,2.4]triazole-3-thione] “L”. In order
to the removal of Cr(VI) from aqueous solutions, we used the reaction
of the sodium dodecyl sulfate coated nano-alumina with L solution for.
This new modifying strategy significantly improve removal efficiency due
to facilitate the accessibility of Cr ions to the activated sits. The surface
morphology and chemistry of the adsorbent was characterized by SEM
and FT-IR spectroscopy, respectively. Effect of most important parameters
such as effect of pH value, contact time, adsorbent dosage, and initial
Cr(VI) concentration on removal efficiency were investigated. In order to
interpret the results Langmuir and Freundlich isotherm models were used.
The results show that prepared absorbent significantly remove heavy metal
ions from wastewater.
Keywords :
Adsorption Isotherm , Modified Alumina , Nanoparticles , Removal Of Cr(VI)
Journal title :
Astroparticle Physics
