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Natural mixture of silica and smectite as a new clayey material for industrial applications

Published online by Cambridge University Press:  09 July 2018

U. Sohling ,
F. Ruf ,
K. Schurz ,
K. Emmerich ,
A. Steudel ,
R. Schuhmann ,
P. Weidler ,
K. Ralla ,
D. Riechers  and
C. Kasper
...Show all authors
U. Sohling*
Affiliation:
Süd-Chemie AG, Ostenrieder Str. 15, 85368 Moosburg, Germany
F. Ruf
Affiliation:
Süd-Chemie AG, Ostenrieder Str. 15, 85368 Moosburg, Germany
K. Schurz
Affiliation:
Süd-Chemie AG, Ostenrieder Str. 15, 85368 Moosburg, Germany
K. Emmerich
Affiliation:
Institute for Technical Chemistry, Department of Water- and Geotechnology (ITC-WGT), Forschungszentrum Karlsruhe GmbH, P.O. Box 3640, 76021 Karlsruhe, Germany Competence Center for Material Moisture, University Karlsruhe, c/o Forschungszentrum Karlsruhe GmbH, ITC-WGT, P.O. Box 3640, 76021 Karlsruhe, Germany
A. Steudel
Affiliation:
Institute for Technical Chemistry, Department of Water- and Geotechnology (ITC-WGT), Forschungszentrum Karlsruhe GmbH, P.O. Box 3640, 76021 Karlsruhe, Germany Competence Center for Material Moisture, University Karlsruhe, c/o Forschungszentrum Karlsruhe GmbH, ITC-WGT, P.O. Box 3640, 76021 Karlsruhe, Germany
R. Schuhmann
Affiliation:
Institute for Technical Chemistry, Department of Water- and Geotechnology (ITC-WGT), Forschungszentrum Karlsruhe GmbH, P.O. Box 3640, 76021 Karlsruhe, Germany Competence Center for Material Moisture, University Karlsruhe, c/o Forschungszentrum Karlsruhe GmbH, ITC-WGT, P.O. Box 3640, 76021 Karlsruhe, Germany
P. Weidler
Affiliation:
Institute for Technical Chemistry, Department of Water- and Geotechnology (ITC-WGT), Forschungszentrum Karlsruhe GmbH, P.O. Box 3640, 76021 Karlsruhe, Germany
K. Ralla
Affiliation:
Institute for Technical Chemistry, University of Hannover, Callinstrasse 3, D-30167 Hannover, Germany
D. Riechers
Affiliation:
Institute for Technical Chemistry, University of Hannover, Callinstrasse 3, D-30167 Hannover, Germany
C. Kasper
Affiliation:
Institute for Technical Chemistry, University of Hannover, Callinstrasse 3, D-30167 Hannover, Germany
T. Scheper
Affiliation:
Institute for Technical Chemistry, University of Hannover, Callinstrasse 3, D-30167 Hannover, Germany
*
*E-mail: ulrich.sohling@sud-chemie.com
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Abstract

The main physico-chemical properties of a new smectitic clay containing large amounts of amorphous material are reviewed and potential industrial applications of this type of clay are discussed. Due to a 34% amorphous material content (natural silica gel), the investigated clay has very high porosity and can be used as it is or in acid-impregnated form for oil bleaching or phosphate reduction in edible oil. In the field of biodiesel purification, the new clay can be used to remove, in particular, mono-, diglycerides and glycerol. The natural silica-smectite mixture is also suitable as a carrier for liquid ingredients, for example in animal feeds, and might serve as a partial or complete substitute for synthetic precipitated silicas. In the field of bioseparation processes, the clay can be used as an adsorbent for protein separation by means of cation exchange. Due to the suppressed swelling (compared with smectite alone), it can be packed in columns which can be regenerated.

Keywords

bioseparationbiodieselcarrierclaysmectitemontmorillonitebleaching earthdegumming
Type
Research Article
Information
Clay Minerals , Volume 44 , Issue 4 , December 2009 , pp. 525 - 537
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2009

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