Aggregate structures formed by hyperbranched functionalized polyethylene (HBfPE) treatment of oil sands tailings

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Costine, Allan; Vajihinejad, Vahid; Botha, Linda; Fawell, Phillip ORCID ID icon; Soares, João


2019-01


Journal Article


The Canadian Journal of Chemical Engineering


97


1


99-102


The unique chemical and physical properties of oil sands tailings require the development of new classes of polymer flocculants to achieve efficient flocculation and dewatering. Fast and direct performance measurements of flocculation and dewatering efficiency are essential for the development of new polymer flocculants. The microscopic characterization of settling velocity and size for free settling aggregates then allows the derivation of the aggregate density as a function of size. Aggregate density is an indication of the internal aggregate structure that directly influences sedimentation, resistance to shear, and dewatering. Aggregate structures formed during oil sands tailings flocculation with a commercially‐available anionic polyacrylamide (A‐PAM) were compared with that of novel hyperbranched functionalized polyethylene (HBfPE) flocculants, showing that aggregates made with some HBfPE formulations were denser and settled faster than those formed with A‐PAM. This paper demonstrates that this approach can usefully quantify the structure of aggregates formed during the treatment of oil sands tailings with polymer flocculants.


Wiley / Canadian Society for Chemical Engineering


oil sands tailings; aggregate structure; floc density analyzer; functionalized polyethylene


Colloid and Surface Chemistry; Separation Science ; Solution Chemistry


https://doi.org/10.1002/cjce.23287


© 2018 Canadian Society for Chemical Engineering


EP181827


Journal article - Refereed


English


Costine, Allan; Vajihinejad, Vahid; Botha, Linda; Fawell, Phillip; Soares, João. Aggregate structures formed by hyperbranched functionalized polyethylene (HBfPE) treatment of oil sands tailings. The Canadian Journal of Chemical Engineering. 2019; 97(1):99-102. https://doi.org/10.1002/cjce.23287



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