Sorption II_April_5_2010[1]

Sorption II_April_5_2010[1] - Sorption II (Chapter 11 plus)...

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Unformatted text preview: Sorption II (Chapter 11 plus) Site-specific sorption to organic matter, clays, and oxides April 5-7, 2010 General Outline Clay mineral basics Exchange (OM and Clay minerals) Other types of aqueous clay-associated interactions Electron donor-acceptor interactions Sorption from air Chemisorption - irreversible sorption reactions/surface catalyzed transformations Minerals in Various Size Fractions of Soils Sand (2,000 50 m) mainly common minerals in igneous and metamorphic rocks Silt (50 2 m) mainly common minerals in igneous and metamorphic rocks sometimes some clay minerals such as kaolinite Clay (<2 m) mainly clay minerals small amounts of quartz and feldspars Basic Building Blocks of Clay Minerals Polyhedra tetrahedra consisting of 4 oxygen ions (O 2- ) surrounding mainly Si 4+ and Al 3+ ions octahedra consisting of 6 oxygen ions (O 2- ) surrounding mainly Al 3+ , Mg 2+ , Fe 2+ , or Fe 3+ ions Sheets made up of tetrahedra, octahedra, or both Layers made up of sheets Tetrahedra and Octahedra (p 13, Plate 1-3) (p 14, Plate 1-4) (p 15, Plate 1-5)...
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This note was uploaded on 08/28/2011 for the course ESE 544 taught by Professor Lee during the Fall '11 term at Purdue University-West Lafayette.

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Sorption II_April_5_2010[1] - Sorption II (Chapter 11 plus)...

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