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Interactions of silica microspheres were examined by light scattering in presence of alum and polyaluminum chloride (PACl) with various OH/Al ratios. The coagulation behaviors were investigated using different coagulant dosages at constant pH (6.5) and salt concentration (0.01mol/L). Based on the measurement of size distribution and zeta potential, charge neutralization was proposed to be the primary...
The conventional alum and polyaluminum chloride (PACl) with high content of Al 13 were selected to study the interaction between coagulants and particles in suspension. Particulate silica microspheres were used for the investigation with emphasis on the surface adsorption behavior at a constant pH of 6.5. Residual turbidity (RT), zeta potential and fractional surface coverage (θ) were studied...
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