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Abstract The present study involves the stabilization and rheological behavior of a fly ash samples in the presence of a low cost natural dispersant saponin isolated from a plant Acacia… Click to show full abstract
Abstract The present study involves the stabilization and rheological behavior of a fly ash samples in the presence of a low cost natural dispersant saponin isolated from a plant Acacia concinna. The critical micellar concentration of the surfactant was measured and it was found to be 0.019g per cc. The rheological characteristics of the slurry had been analyzed by variation of saponin concentration, ash concentration and temperature. The data obtained were best fitted by Bingham plastic model in the studied ranges of concentrations 50–65%. Addition of the surfactant to the slurry reduced the surface tension of the dispersing medium water which increased wettability of the fly ash particles and reduced particle-particle interaction. Decreases in zeta potential measurement conformed that stabilization fly ash slurry is mainly due to the steric factor.
Journal Title: Journal of the Taiwan Institute of Chemical Engineers
Year Published: 2019
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