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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Sundman, Ola Sirviö, Juho Visanko, Miikka Liimatainen, Henrikki Hormi, Osmo Niinimäki, Jouko |
| Description | Country affiliation: Finland Author Affiliation: Liimatainen H ( Fiber and Particle Engineering Laboratory, P.O. Box 4300, FI-90014 University of Oulu, Finland. henrikki.liimatainen@oulu.fi) |
| Abstract | The flocculation behavior of cationic, quaternary ammonium groups containing cellulosic biopolymers, CDACs, synthesized by cationizing dialdehyde cellulose in mild aqueous solution was studied in a kaolin suspension. In particular, the role of CDAC dosage and solution pH, NaCl concentration, and temperature were clarified. In addition, the initial apparent charge densities (CDs), particle sizes, ζ-potential, and stability of CDs were determined. CDACs possessed a high flocculation activity in neutral and acidic solutions, but a significant decrease was observed in alkaline solutions (pH >9). This was also seen as a decline in the apparent CD and particle size of the CDACs in alkaline conditions. The measurements also indicated that the apparent CD decreased to a constant level of 3 mmol/g in aqueous solutions. However, no notable decrease in flocculation performance was obtained after several days of storage. Moreover, the variation of NaCl concentration and temperature did not affect the flocculation activity. |
| ISSN | 09608524 |
| Issue Number | 20 |
| Volume Number | 102 |
| e-ISSN | 18732976 |
| Journal | Bioresource Technology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-10-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biopolymers Cations Cellulose Chemistry Flocculation Solutions Water Journal Article Research Support, Non-u.s. Gov't Discipline Bioresource |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Medicine Environmental Engineering Renewable Energy, Sustainability and the Environment Bioengineering |
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