Adsorption Behavior of Cadmium(II) and Lead(II) on Mesoporous Silicate MCM-41

This investigation examines metal ion adsorption on mesoporous silicate, MCM-41, synthesized from sodium silicate solution and cethyltrimethylammonium bromide (CTAB). MCM-41 has potential as an adsorbent material, with a regular hexagonal pore structure, large specific surface area, and large pore v...

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Published inSeparation science and technology Vol. 41; no. 8; pp. 1635 - 1643
Main Authors Oshima, Syunichi, Perera, Jilska M., Northcott, Kathy A., Kokusen, Hisao, Stevens, Geoffrey W., Komatsu, Yu
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.07.2006
Subjects
Adsorption behavior
cadmium
lead
MCM-41
mesoporous silicate
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Summary:This investigation examines metal ion adsorption on mesoporous silicate, MCM-41, synthesized from sodium silicate solution and cethyltrimethylammonium bromide (CTAB). MCM-41 has potential as an adsorbent material, with a regular hexagonal pore structure, large specific surface area, and large pore volume. The MCM-41 synthesized for this investigation is characterized using powder X-ray diffraction and nitrogen adsorption and desorption isotherms data. The adsorption behavior for cadmium(II) and lead(II) onto MCM-41 was studied by contacting the mesoporous silicate with an aqueous solution of metal salts and acetylacetone. Both Cd 2+ and Pb 2+ were found to quantitatively adsorb onto MCM-41. The results of this study suggest that MCM-41 may have applications in the recovery of toxic metals from waste waters.
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ISSN:0149-6395
1520-5754
DOI:10.1080/01496390600674786