TY  - JOUR
AU  - Klumpp, E.
AU  - Contreras-Ortega, C.
AU  - Klahre, P.
AU  - Tino, F. J.
AU  - Yapar, S.
AU  - Portillo, C.
AU  - Stegen, F.
AU  - Queirolo, F.
AU  - Schwuger, M. J.
TI  - Sorption of 2,4-dichlorophenol on modified hydrotalcites
JO  - Colloids and surfaces / A
VL  - 230
SN  - 0927-7757
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-32830
SP  - 111 - 116
PY  - 2003
N1  - Record converted from VDB: 12.11.2012
AB  - The 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000188059700012
DO  - DOI:10.1016/j.colsurfa.2003.09.018
UR  - https://juser.fz-juelich.de/record/32830
ER  -