Floc strength characterization technique. An insight into silica aggregation |
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| Authors: | Hermawan Mandalena Bushell Graeme C Craig Vincent S J Teoh Wey Yang Amal Rose |
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| Institution: | School of Chemical Engineering and Industrial Chemistry, University of New South Wales, Sydney, NSW 2052, Australia. |
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| Abstract: | This paper tests an approach to the estimation of relative particle bond strength based on the nondimensional floc and aggregation factors. The strength of flocs formed by aggregating nanosized silica particles with the addition of potassium chloride (KCl) or cationic surfactants, alkyltrimethylammonium bromide (mixture of CTAB, DTAB, and MTAB) was analyzed. The bonding force of the flocs formed in surfactant compared to that formed in the KCl system was estimated using the new dimensional analysis approach. This force ratio was then compared to that obtained by atomic force microscopy. |
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