Value added products from modified kaolins : new chemical routes to new markets

Mackinnon, Ian D.R. (1998) Value added products from modified kaolins : new chemical routes to new markets. In O'Driscoll, Mike (Ed.) Proceedings of the 13th Industrial Minerals International Conference, Industrial Minerals Information Ltd, Kuala Lumpur, Malaysia, pp. 113-118.

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Abstract

Chemical treatments of kaolins to produce nanocrystalline or "X-ray amorphous", stable aluminosilicates with variable - but reproducible - types of micro- and meso-porosity have been developed. These materials show cation exchange capacities and surface area values significantly higher (ranging from 10x to 100x) than kaolin and show good acid resistance to pH~3.0. The combination of these properties offers strong potential for many new applications of kaolin-derived materials in large worldwide markets such as environmental remediation and catalysis. Kaolin amorphous derivative (KAD) is well-suited to removal of many toxic metals down to ppb range from acid mine drainage. Engineering development trials of the KAD manufacturing process and the utilisation of KAD in polluted waters such as acid mine drainage indicates that scale-up from bench-scale is not a barrier to market entry.

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ID Code: 57739
Item Type: Conference Paper
Refereed: Yes
Keywords: modified kaolins, kaolin amorphous derivative, cation exchange, metal ion exchange, cation exchange capacity, acid mine drainage, metal recovery
ISBN: 1900663368
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300) > Synthesis of Materials (030306)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Mineralogy and Crystallography (040306)
Divisions: Current > Institutes > Institute for Future Environments
Deposited On: 04 Mar 2013 22:12
Last Modified: 04 Mar 2013 22:12

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