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Experimental study of colloid interactions with rock surfaces

Published online by Cambridge University Press:  17 March 2011

U. Alonso
Affiliation:
CIEMAT, Avda. Complutense 22, Edif. 19, 28040 Madrid, SPAIN CIEMAT, Avda. Complutense 22, Edif. 19, 28040 Madrid, SPAIN, [email protected]
T. Missana
Affiliation:
CIEMAT, Avda. Complutense 22, Edif. 19, 28040 Madrid, SPAIN
A. Patelli
Affiliation:
LNL - INFN, Via dell' Università 2, 35020 Legnaro-Padova, ITALY
J. Ravagnan
Affiliation:
LNL - INFN, Via dell' Università 2, 35020 Legnaro-Padova, ITALY
V. Rigato
Affiliation:
LNL - INFN, Via dell' Università 2, 35020 Legnaro-Padova, ITALY
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Abstract

In subsurface environments, colloids may play a role in the transport of contaminants to the biosphere because of their high capacity to adsorb them. The electrostatic interactions between colloids and the heterogeneous rock surfaces will determine the fate and transport of both colloids and contaminants adsorbed on the particles. Thus, the aim of the present work was to study the electrostatic interactions between colloidal particles and a crystalline rock surface. Since different minerals are expected to act as preferential reactive areas, the spatial distribution of colloids on the mineral surfaces was studied, accounting several conditions, by means of the nuclear ion beam technique μ-Particle Induced X-ray Emission (μPIXE).

Type
Research Article
Copyright
Copyright © Materials Research Society 2004

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