Рад у часопису

објављена верзија

енглески

M. Ilic, J. Gonz�lez, A. Pohlmeier, H. D. Narres, M. J. Schwuger

Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release

Colloid & Polymer Science

Springer Science and Business Media LLC

1996

The interaction of dodecylsulfate anions (DS−) with homoionic Ca-, Mg-, Ni-, Cu-, Cd-, Pb- and Fe-montmorillonites were investigated. Mg- and Cd-montmorillonite do not adsorb DS−, and an anion exchange at the edges of the clay mineral does not take place. Three different adsorption processes are identified on the other montmorillonites: i) Fe-montmorillonite is covered with amorphous iron hydroxide, and DS−-anions are bound at positively charged sites. ii) On Ca- and Pb-montmorillonite DS− is precipitated as Me(DS)2. iii) On Ni- and Cu-montmorillonite DS− forms ion pairs with the cations on the surface. In all cases DS− is not bound above the CMC but the metal ions are mobilized from the surface either by solubilization of the precipitates or by formation of mixed micelles.

274

10

966

973

10.1007/BF00656626

0303-402X

Натријум додецилсулфат, адсорпциона преципитација, монтморилонит

Sodium dodecylsulfate, adsorption precipitation – montmorillonite

http://link.springer.com/content/pdf/10.1007/BF00656626.pdf

M20

М22

Отворени приступ

All rights reserved

.pdf