Community Research and Development Information Service - CORDIS

Abstract

The adsorption behaviour of americium, thorium, neptunium, and plutonium was investigated in multicomponent systems containing gamma alumina or amorphous silica as model inorganic particles and polydispersed humic acid (HA) colloids isolated from an organic-rich clay formation. The sorption selectivity of the actinide ions on bare mineral oxide particles could be explained on the basis of the hard-soft Lewis acid-base behaviour. Competition experiments using HA indicated that the extent of actinide adsorption depends on the coordinating strengths of HA on the surface and in the solution.

Additional information

Authors: RIGHETTO L, Università di Milano, Dipartimento di Chimica Fisica ed Elettrochimica (IT);AZIMONTI G, Università di Milano, Dipartimento di Chimica Fisica ed Elettrochimica (IT);BELLOBONO R, Università di Milano, Dipartimento di Chimica Fisica ed Elettrochimica (IT);BIDOGLIO G, JRC Ispra (IT)
Bibliographic Reference: Article: Environmental Science and Technology, Vol. 25 (1991) No. 11, pp. 1913-1919
Record Number: 199210098 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top