Electrokinetics of Pure Clay Minerals Revisited

Sondi, Ivan; Bišćan, Jasenka; Pravdić, Velimir

doi:10.1006/jcis.1996.0146

Cited by 119 publications

(72 citation statements)

References 13 publications

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“…−25 mV. Similar results were reported elsewhere by other researchers (29)(30)(31)(32). This peculiar behavior could originate from its special layer structure and the resulting special properties (high specific surface area, interlayer swelling, and huge capacity of adsorption of ions from the solution) (33).…”

Section: Resultssupporting

confidence: 87%

Bitumen–Clay Interactions in Aqueous Media Studied by Zeta Potential Distribution Measurement

Liu

Zhou

et al. 2002

Journal of Colloid and Interface Science

160

132

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Section: Resultssupporting

confidence: 87%

Bitumen–Clay Interactions in Aqueous Media Studied by Zeta Potential Distribution Measurement

Liu

Zhou

et al. 2002

Journal of Colloid and Interface Science

160

132

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“…In the case of these clay colloids, there is not any evidence of a decrease in potential when the ionic strength is increased, as can be seen in our experimental results (Fig. 4) and as that already reported in the literature (24,25). In addition, the differences between calculated potentials and experimental ζ -potentials are, in general, quite large.…”

Section: Discussionsupporting

confidence: 81%

On the Applicability of DLVO Theory to the Prediction of Clay Colloids Stability

Missana

Adell

2000

Journal of Colloid and Interface Science

309

143

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“…For all the clays, the ζ potential increases with increasing salt concentration and decreasing pH. The increase of the ζ potential is larger upon addition of divalent salt than of monovalent salt (Sondi et al 1996;Kosmulski 2006;Tombacz and Szekeres 2004;Tomback and Szekeres 2006;Mietta et al 2009). …”

Section: ζ Potential Measurementsmentioning

confidence: 93%

Influence of shear rate, organic matter content, pH and salinity on mud flocculation

et al. 2009

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The purpose of this paper is to establish a relation between a few measurable quantities (the socalled ζ potential, organic matter content, and shear rate) and the flocculation behavior of mud. The results obtained with small-scale flocculation experiments (mixing jar) are compared to results of large-scale experiments (settling column). The mud used for all experiments has been collected in October 2007 in the lower Western Schelde, near Antwerp, Belgium. From this study, it was found that the mean floc size and the Kolmogorov microscale vary in a similar way with the shear rate for suspensions with different pH and salt concentrations. The size of flocs at a given shear rate depends on the properties of the suspension, which affect the electrokinetic properties of the sediment; these can be described by means of the ζ potential. The main findings of this paper are: (1) In saline suspensions at pH = 8, the mean floc size increases when the salt concentration and the ζ potential increase. (2) For a given ζ potential, the mean floc size at low pH is larger than observed at pH = 8 for any added salt. (3) The mean floc size increases with increasing organic matter content. (4) Mud with no organic matter at pH = 8 and no added salt flocculates very little. The response of mud suspensions to variations in salinity and pH is similar to that of kaolinite. This suggests that a general trend can be established for different and complex types of clays and mud. This systematic study can therefore be used for further development of flocculation models.

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Electrokinetics of Pure Clay Minerals Revisited

Cited by 119 publications

References 13 publications

Bitumen–Clay Interactions in Aqueous Media Studied by Zeta Potential Distribution Measurement

Bitumen–Clay Interactions in Aqueous Media Studied by Zeta Potential Distribution Measurement

On the Applicability of DLVO Theory to the Prediction of Clay Colloids Stability

Influence of shear rate, organic matter content, pH and salinity on mud flocculation

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