Download Colloidal Transport in Porous Media by Daniel Grolimund, Kurt Barmettler, Michal Borkovec (auth.), PDF

By Daniel Grolimund, Kurt Barmettler, Michal Borkovec (auth.), Prof. Dr. Dr. Habil. Fritz H. Frimmel, Dr. Frank Von Der Kammer, Prof. Dr. Hans-Curt Flemming (eds.)

Colloids are identified to be the usually overlooked section for the delivery of toxins in aquatic ecosystems. The e-book covers the fundamentals of abiotic colloid characterization, of biocolloids and biofilms, the ensuing shipping phenomena and their engineering elements. the topic is gifted from a global team of prime experts dedicated to colloidal sciences. The contributions comprise theoretical concerns, effects from version experiments in addition to box experiences. the knowledge given will serve scholars and scientists attracted to the analytical, chemical, microbiological, geological and hydrological points of fabric delivery in aquatic platforms and soils.

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The metal solutions were injected into the column in the presence and absence of colloids. The quantification of metals at the column outlet was carried out by coupling the column system with an inductively coupled plasma mass spectrometer (ICP-MS). The determination of Na-bentonite colloids was done online by means of a UV detector and the ICP-MS system. Characterisation of the colloid-metal interactions was based on sorption experiments and modelling calculations carried out at pH values of 5 and 7.

J Petrol Technol :860-864 Roy SB, Dzombak DA (1997) Chemical factors influencing colloid-facilitated transport of contaminants in porous media. Environ Sci Technol 31 (3):656664 Roy SB, Dzombak DA (1998) Sorption nonequilibrium effects on colloidenhanced transport of hydrophobic organic compounds in porous media. J Contam Hydrol 30:179-200 Ryan JN, Elimelech M (1996) Colloid mobilization and transport in groundwater. Colloids and Surfaces, A: Physicochemical and Engineering Aspects 107:1-56 Saiers JE, Hornberger GM (1996) The role of colloidal kaolinite in the transport of cesium through laboratory sand columns.

For these investigations a “short pulse” laboratory column system with online metal and colloid detection was used. The transport experiments were carried out under water saturated conditions. The bentonite-metal interactions were characterised by using of sorption experiments and modelling calculations. Furthermore the stability of bentonite colloids was determined. 1 Substances and Sample Preparation The sample preparation in all experiments was carried out by using deionised water (Milli-Q Plus, Millipore).

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