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The dynamics of the flocculation of precipitated calcium carbonate (PCC) with two commercial cationic tapioca starches (S858 and S880) with different charge densities were studied by small angle static light scattering. The effects of temperature, polymer dosage, ionic strength, and shear rate on the floc size and structure were investigated by employing a response surface methodology involving the...
A population balance model to describe the flocculation of PCC by two cationic tapioca starches is presented. The model takes into account aggregation, floc breakage and floc restructure. Floc strength as indicated by energy dissipation rate was also evaluated. It was found that the high charge density starch relates to lower collision efficiency, lower restructure rate and higher floc strength (higher...
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