A novel sorbent for lanthanide adsorption based on tetraoctyldiglycolamide, modified carbon inverse opals

Carbon inverse opals (C-IOP) were noncovalently modified with tetraoctyldiglycolamide (TODGA). The effect of HNO 3 concentration in the aqueous phase and that of the TODGA concentration in the sorbent phase on the adsorption of microquantities of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb...

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Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (1), p.529-535
Main Authors: Turanov, Alexander N, Karandashev, Vasilii K, Sukhinina, Nadezhda S, Masalov, Vladimir M, Zhokhov, Andrey A, Emelchenko, Gennadi A
Format: Article
Language:English
Subjects:
Adsorption
Carbon
Efficiency
Inverse
Mathematical models
Samarium
Sorbents
Stoichiometry
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Summary:Carbon inverse opals (C-IOP) were noncovalently modified with tetraoctyldiglycolamide (TODGA). The effect of HNO 3 concentration in the aqueous phase and that of the TODGA concentration in the sorbent phase on the adsorption of microquantities of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu nitrates from HNO 3 solutions by CIOP modified with TODGA was considered. The stoichiometry of the sorbed complexes has been determined by the slope analysis method. The efficiency of lanthanides( iii ) adsorption from moderate-concentration HNO 3 solutions increases with increasing atomic number of the element. The process of lanthanides( iii ) adsorption is exothermic, spontaneous and followed a pseudo-second-order kinetic model. Carbon inverse opals (C-IOP) were noncovalently modified with tetraoctyldiglycolamide (TODGA).
ISSN:2046-2069
2046-2069
DOI:10.1039/c4ra11999a