Stabilizing colloidal suspensions helps prevent scale deposition and inorganic particulate matter fouling in aqueous systems. Colloidal suspension stabilization was modeled using iron oxide (Fe2O3) suspensions in synthetic tap water containing a mixed electrolyte system that included a variety of ions interacting with suspended particles. Zeta potential measurements of suspended particles were conducted over a wide pH range (3.5 to 10) both in the absence and in the presence of deposit control polymers (DCPs). Results suggest that both polymer functional group type(s) and molecular weight (MW) impact dispersion efficiency.

Subject
Water, Iron oxide, Metal surfaces, Adsorption, Polymerization, Iron, Solvents, Dosages, Dispersion, Hematite, Polymers, Oxide surfaces, Terpolymers
Keywords:
iron oxide, suspension, colloidal, zeta potential, deposit control polymers
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2016
Association for Materials Protection and Performance (AMPP)
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