Clays and Clay Minerals, Vol. 60, No. 4, 405–410, 2012.
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Authors
Ma, Mark
Issue Date
2012
Type
Article
Language
Keywords
Periodicals , Geology , Kaolinite , Sodium Hexametaphosphate , Dispersion , Coagulation , Seawater
Alternative Title
The Dispersive Effect Of Sodium Hexametaphosphate On Kaolinite In Saline Water
Abstract
Freshwater has become increasingly scarce in many countries. To reduce the consumption of freshwater, the use of saline water resources in industry could provide an opportunity to meet the challenge of water-supply sustainability. However, the presence of electrolytes in saline water causes the coagulation of kaolinite, the colloid stability of which plays a key role in the processing of a number of minerals. Therefore, the dispersion of kaolinite in saline water was studied here. Electrophoretic mobility and colloid stability studies were conducted on a sodium hexametaphosphate-kaolinite system in the presence of NaCl, KCl, CaCl2, and MgCl2, the major electrolytes in saline water resources. The effect of each electrolyte on kaolinite dispersion was studied. Based on the studies of individual electrolytes, a method was developed to disperse kaolinite in 1:1 diluted synthetic seawater with distilled water, which may potentially reduce the consumption of freshwater by 50% when applied in industry.
Description
gsccm60406-ma.pdf -- 725KB
Citation
Clays and Clay Minerals, Vol. 60, No. 4, 405–410, 2012.
Publisher
The Clay Minerals Society
License
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