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Adsorption Studies of Radionuclides and Toxic Metal Ions on a Modified Mesoporous Lanthanum(III) Silicate
Author(s) -
Sepehrian Hamid,
Ahmadi Syed Javad,
WaqifHusain Syed,
ZolfaghariDaryani Ahmad Reza,
Azadmousavi Mortaza
Publication year - 2010
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201090112
Subject(s) - chemistry , sorption , lanthanum , adsorption , silicate , nuclear chemistry , mesoporous material , inorganic chemistry , metal ions in aqueous solution , bromide , metal , thermogravimetry , organic chemistry , catalysis
A new adsorbent, modified mesoporous lanthanum(III) silicate, has been prepared with various molar ratios of Si/La (10, 20, 40, 80) and cethyltrimethylammonium bromide (CTAB) as structure directing agent. XRD, nitrogen sorption, SEM, IR, thermogravimetry and sorption of radionuclides and toxic metal ions have been studied. The results show that adsorption amount of some element such as Pb(II) and Th(IV) has been increased significantly by incorporation of lanthanum ions in the framework of adsorbent. Separation of Co(II)‐Th(IV), Co(II)‐U(VI) and Mo(VI)‐U(VI) has been developed on columns of this adsorbent.