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000032830 084__ $$2WoS$$aChemistry, Physical
000032830 1001_ $$0P:(DE-Juel1)129484$$aKlumpp, E.$$b0$$uFZJ
000032830 245__ $$aSorption of 2,4-dichlorophenol on modified hydrotalcites
000032830 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2003
000032830 300__ $$a111 - 116
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000032830 440_0 $$01360$$aColloids and Surfaces A:Physicochemical and Engineering Aspects$$v230$$x0927-7757
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000032830 520__ $$aThe adsorption of anionic surfactants (sodium dodecyl sulfate (SDS) and sodium bis[2-ethylhexil]sulfosuccinate (AOT)) on hydrotalcite (HT) and the adsorption of 2,4-dichlorophenol (DCP) on HT and its modified forms from aqueous solutions was studied. The modification was carried out by calcinations (heat treatment) and hydrophobization using different anionic surfactants. The anionic surfactant isotherms were of the H-type. It was assumed that first the ion exchange mechanism takes place until approximately the anion exchange capacity of HT is reached and hereafter, the hydrophobic mechanism occurs forming surfactant bilayers. While the DCP adsorption was very poor on HT, significant uptake of DCP took place on calcined HT which was attributed to the simultaneously occurring rehydration and adsorption during the reconstruction of the layered structure. On anionic surfactant-HT complexes ("organo-hydrotalcites") DCP was considerably adsolubilized in the anionic surfactant layers intercalated in HT. The AOT-HT complex appeared the more effective adsorbents for DCP. (C) 2003 Elsevier B.V. All rights reserved.
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000032830 65320 $$2Author$$ahydrotalcite
000032830 65320 $$2Author$$aanionic surfactants
000032830 65320 $$2Author$$aorganic pollutant
000032830 65320 $$2Author$$aadsorption
000032830 65320 $$2Author$$aadsolubilization
000032830 7001_ $$0P:(DE-HGF)0$$aContreras-Ortega, C.$$b1
000032830 7001_ $$0P:(DE-Juel1)VDB4003$$aKlahre, P.$$b2$$uFZJ
000032830 7001_ $$0P:(DE-HGF)0$$aTino, F. J.$$b3
000032830 7001_ $$0P:(DE-HGF)0$$aYapar, S.$$b4
000032830 7001_ $$0P:(DE-HGF)0$$aPortillo, C.$$b5
000032830 7001_ $$0P:(DE-HGF)0$$aStegen, F.$$b6
000032830 7001_ $$0P:(DE-HGF)0$$aQueirolo, F.$$b7
000032830 7001_ $$0P:(DE-Juel1)VDB28401$$aSchwuger, M. J.$$b8$$uFZJ
000032830 773__ $$0PERI:(DE-600)1500517-3$$a10.1016/j.colsurfa.2003.09.018$$gVol. 230, p. 111 - 116$$p111 - 116$$q230<111 - 116$$tColloids and surfaces / A$$v230$$x0927-7757$$y2003
000032830 8567_ $$uhttp://dx.doi.org/10.1016/j.colsurfa.2003.09.018
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