Colloids and Surfaces A 538 (2018) 210–218 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Research Paper Zeta potential and viscosity of colloidal silica suspensions: Eﬀect of seawater salts, pH, ﬂocculant, and shear rate a b a c Cristian P. Romero , Ricardo I. Jeldres , Gonzalo R. Quezada , Fernando Concha , a, Pedro G. Toledo Chemical Engineering Department and Surface Analysis Laboratory (ASIF), University of Concepción, PO Box 160-C, Correo 3, Concepción, Chile Department of Chemical Engineering and Mineral Process, University of Antofagasta, PO Box 170, Antofagasta, Chile Department of Metallurgical Engineering, University of Concepción, PO Box 160-C, Correo 3, Concepción, Chile GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: The eﬀect of various seawater electrolytes on the zeta potential and viscosity of silica suspensions has been studied Silica as a function of electrolyte concentration, pH, ﬂocculant and shear rate. Salts were alkali and alkaline-earth metal Flocculant chlorides. The magnitude of the negative zeta potential of silica as a function of pH for monovalent cations follows Seawater ions + + + + + + + + Li >Na >K >Cs implying that adsorption follows Cs >K >Na >Li . In the presence
Geoderma – Elsevier
Published: Feb 15, 2019
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