Journal article
Impact of seawater salts on the viscoelastic behavior of flocculated mineral suspensions
RI Jeldres, PG Toledo, F Concha, AD Stickland, SP Usher, PJ Scales
Colloids and Surfaces A Physicochemical and Engineering Aspects | Published : 2014
Abstract
The impact of several electrolytes present in seawater on the rheological properties of flocculated alumina suspensions was assessed by using creep testing at pH conditions both above and below the isoelectric point. Flocculated suspensions were obtained by adding a high molecular weight anionic polymer flocculant to a cylinder of alumina suspension and aggregating the suspension using the plunger method. The suspension was allowed to sediment and the supernatant liquid decanted prior to tests of the viscoelastic properties of the resulting sediment. Salts analyzed were MgCl2, CaCl2 and NaCl, known as water structure makers, and KI and KCl, known as water structure breakers. A high salt conc..
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Awarded by Australian Research Council
Funding Acknowledgements
RIJ thanks CONICYT-Chile for a graduate student fellowship and a research internship at the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Australia, where the experimental work was carried out. We thank the support of Centro CRHIAM Conicyt/Fondap Project-15130015 and Red Doctoral REDOC.CTA, MINEDUC Grant # UCO1202. The infrastructure support of the Particulate Fluids Processing Centre, a Special Research Centre of the Australian Research Council is gratefully acknowledged.