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Adsorption Studies of Lead on Modified Mesoporous Al-MCM-41

 

Authors: Hamid Sepehriana, Ramin Cheraghalib, Hojjat alla Abdib, Peyman Rezaeib

 

Affiliation: a) Nuclear Science and Technology Research Institute, AEOI , P.O. Box 11365/8486, Tehran, Iran
  b) Chemistry Department, Islamic Azad University, Saveh Branch, Saveh, Iran


Published in: Ion Exch. Lett. 2011, 4(2), 1-6

 

Permanent link to this page: http://iel.vscht.cz/abstracts/1803-4039-04-0001.htm

 

DOI: 10.3260/iel.2011.03.001

 

License:  Creative Commons License

 

Keywords: mesoporous materials; aluminosilicate; adsorption behavior; lead
 

Abstract: In this paper, the sorption of lead on modified mesoporous aluminosilicate was studied. The effect of pH, contact time, initial concentration of lead on sorption was investigated. The distribution coefficient of lead ion on the mesoporous aluminosilicates has been enhanced with the increase of the aluminum in the framework of the adsorbent. Adsorption behavior of lead on the Al20MCM-41 adsorbents has been studied and the Langmuir and Freundlich isotherms were applied to represent the adsorption process. The Langmuir equation provides a better fiting than the Freundlich one. The Langmuir monolayer capacity of the sorbent was 14.6 mg.g-1. The adsorption capacity is very high in the pH range of 3-7 and decreases with decreasing of the pH value.