GA810 Geochemistry of colloid systems

Faculty of Science
Spring 2000
Extent and Intensity
2/1. 3 credit(s). Type of Completion: zk (examination).
Teacher(s)
doc. Ing. Jiří Faimon, Dr. (lecturer)
Guaranteed by
doc. Ing. Jiří Faimon, Dr.
Department of Geological Sciences – Earth Sciences Section – Faculty of Science
Contact Person: doc. Ing. Jiří Faimon, Dr.
Prerequisites (in Czech)
G5080 Geochemistry I
Course Enrolment Limitations
The course is also offered to the students of the fields other than those the course is directly associated with.
fields of study / plans the course is directly associated with
Syllabus
  • Colloid systems: classification, behavior, properties. Hydrophilic and hydrophobic surfaces, phase colloids, molecular colloids. Formation of colloids: condensation and desintegration processes, origin and role of supersaturation, nucleation, formation of solids, kinetic factors. Stability of colloid system: thermodynamics of surfaces, stabilisation of colloids by surface charge and by polymers. Electric double-layer, influence of ionic strenght. Modeling of stability of colloid particles: repulsion and atractive forces, curves of potential energy, potential barrier, primary and secondary minima. Polymerization of alumina and silica in solutions: monomers, polymers, growing of particles, supersaturation, modeling. Transport of colloids: transport by water, transport in pore media. Role of colloids at supergene processes: origin of sediments, clay minerals and soils. Role of colloids in environment: surface sorption, carriers and scavengers of polutants. Role of colloids in hydrothermal processes: colloid behavior at higher temperatures. Methods of study of colloid systems: without separation, under separation of colloid particles. Ultrafiltration, gel-filtration, gel-chromatography. Ultrafilters, membranes, chromatographic gels, column chromatography.
Literature
  • Faimon J. (1995) Vznik koloidů při zvětrávání silikátů. Masaryk university, PhD thesis
  • Yariv S., Cross H. (1979) Geochemistry of colloid systems. Springer Verlag
  • ČURLÍK, Ján. Geochémia geologických procesov : hypergénne procesy. 1. vyd. Bratislava: Univerzita Komenského, 1988, 230 s. info
  • Overbeek J.Th.G. (1977) Recent developments in the understanding of colloid stability. J. Coll. Int. Sci., 58(2), 408-422
  • Degueldre C.A., Wernli B. (1987) Characterization of the natural inorganic colloids from a reference granitic ground water. Anal. Chim. Acta, 195, 211-223
  • Crerar D.A., Axtmann E.V., Axtmann R.C. (1981) Growth and ripening of silica polymers in aqueous solutions. Geochim. Cosmochim. Acta, 45, 1259-1266
Language of instruction
Czech
Further Comments
The course is taught once in two years.
The course is taught: every week.
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