2005
DOI: 10.1016/j.jcis.2005.04.091
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Stability of dispersions of colloidal alumina particles in aqueous suspensions

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Cited by 175 publications
(89 citation statements)
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References 9 publications
(16 reference statements)
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“…It can be seen from Fig. 4 that as pH increases, the surface charge of the alum sludge, which is pH dependent [16], changes from positive to negative. This gives valuable information regarding the changing nature of the surface of the alum sludge.…”
Section: The Ph Dependence Of Adsorption Capacitymentioning
confidence: 95%
“…It can be seen from Fig. 4 that as pH increases, the surface charge of the alum sludge, which is pH dependent [16], changes from positive to negative. This gives valuable information regarding the changing nature of the surface of the alum sludge.…”
Section: The Ph Dependence Of Adsorption Capacitymentioning
confidence: 95%
“…As can been seen from Table 1, there is a significant difference not only in the particle size, but also the zeta potential when comparing aged S-P3MEET (À50.5 ± 6.2 mV) and fresh S-P3MEET (À28.0 ± 9.2 mV). Since the magnitude of the zeta potential represents the electrostatic repulsion between particles [52], the increase in zeta potential value (more negative) results in increased physical stability of the dispersion. This explains why fresh S-P3MEET ages.…”
Section: Mechanism Of S-p3meet Agingmentioning
confidence: 99%
“…On the other hand, the suspension at pH 3.5 rapidly initiated sedimentation, leaving a clear supernatant and reducing the dispersion volume ( Figure 6). The instability of this suspension can be attributed to the rapid agglomeration of the particles, thus resulting in a lower dispersion volume 14 . …”
Section: Zeta Potential and Rheological Behaviour Of The Suspensionsmentioning
confidence: 99%
“…The interaction of polyelectrolytes with alumina particles and factors such as pH, ionic strength of the medium and solids concentration interfere with the stability of the suspension 4,[12][13][14] . For this reason, the investigation of the rheological behaviour of alumina suspensions is essential in colloidal processing since rheological parameters directly influence the casting rate and quality of the formed bodies.…”
Section: Introductionmentioning
confidence: 99%