Dual polymer flocculants for mature fine tailings dewatering
| Autor: | Qi Liu, Ying Zhu, Xiaoli Tan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Flocculation Materials science General Chemical Engineering Polyacrylamide Environmental engineering 02 engineering and technology Polymer 021001 nanoscience & nanotechnology Dewatering Tailings law.invention Filter cake chemistry.chemical_compound 020401 chemical engineering chemistry Chemical engineering law PolyDADMAC 0204 chemical engineering 0210 nano-technology Filtration |
| Zdroj: | The Canadian Journal of Chemical Engineering. 95:3-10 |
| ISSN: | 0008-4034 |
| Popis: | A cationic polymer, polydiallyldimethylammonium chloride (polyDADMAC), and an anionic (hydrolyzed) polyacrylamide (PAM), were used in sequence to treat the mature fine tailings (MFT) from the oil sands operations in Alberta, Canada. Capillary suction time (CST), specific resistance to filtration (SRF), and filter cake solid content were measured, and cryogenic scanning electron microscopic (cryo-SEM) images of the MFT were taken, before and after the dual polymer treatment to evaluate the dewaterability of the MFT. The results were compared with treatment by a single polymer, which demonstrated that the dual polymer treatment resulted in improved dewaterability of the MFT due to the larger pore sizes. |
| Databáze: | OpenAIRE |
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