volume 13, issue 2, P95-106 1978
DOI: 10.1080/01496397808057092
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Abstract: The effect of slow mixing on colloid flocculation is examined within the framework of a modified Gouy-Chapman model, and the forces between the floc particles compared with the viscous drag forces due to velocity gradients. The effects of ionic strength and floc zeta potential are examined. It is found that the viscous drag forces are too small to force together floc particles having surface potentials greater than about 14.5 mV; no potential barrier occurs at surface potentials below about 14 mV. The strongl…

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