Enhanced Flocculation of Oil Sands Mature Fine Tailings Using Hydrophobically Modified Polyacrylamide Copolymers | Zendy

Hripko Rhys | Zendy; Vajihinejad Vahid | Zendy; LopesMotta Fernanda | Zendy; Soares João B. P. | Zendy

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Enhanced Flocculation of Oil Sands Mature Fine Tailings Using Hydrophobically Modified Polyacrylamide Copolymers

Author(s) -

Hripko Rhys,

Vajihinejad Vahid,

LopesMotta Fernanda,

Soares João B. P.

Publication year - 2018

Publication title -

global challenges

Language(s) - English

Resource type - Journals

ISSN - 2056-6646

DOI - 10.1002/gch2.201700135

Subject(s) - polyacrylamide , flocculation , tailings , copolymer , chemical engineering , materials science , chemistry , polymer , polymer chemistry , composite material , engineering , metallurgy

Hydrophobically modified acrylamide copolymers dewater oil sands tailings more effectively than anionic polyacrylamide, but the root causes for this enhanced performance have not been investigated systematically. Polyacrylamide‐poly(ethylene oxide methyl ether methacrylate) copolymers with different comonomer compositions, hydrophobic chain lengths, and molecular weights to map out these effects systematically are synthetized. Through a statistical design of experiments, it is found out that all three variables above significantly affected flocculation performance and that certain combinations achieve optimal results. The effect of centrifugation on the flocculation and dewatering performance of these polymers is also investigated.

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