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Optimisation of froth flotation for removal of wood extractives in paper manufacture
Citation
Singh, S and Stack, KR and Lewis, TW and Richardson, DE, Optimisation of froth flotation for removal of wood extractives in paper manufacture, Appita Journal, 69, (3) pp. 253-263. ISSN 1038-6807 (2016) [Refereed Article]
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Official URL: https://www.researchgate.net/publication/305492909...
Abstract
A laboratory scale froth flotation batch process has been optimised for removal of wood extractives from
Pinus radiata thermo-mechanical pulp (TMP) process water. This has provided insight into the mechanism of
flotation and has potential for application in industry. The study involved optimisation of surfactant type and
concentration, flotation time, airflow, impeller speed, pH, temperature and ionic strength.
Maximum wood extractive removal was achieved by flotation with the addition of 80 mg/L of the cationic surfactant dodecyltrimethylammonium bromide (DoTAB) at pH 5.0 and 60 șC for 20 min with an air flow of 4.5 L/min and impeller speed of 1300 rpm. Under these conditions the removal efficiency of total extractives was close to 95%. Process water treated in this way would be suitable for recirculation in a pulp or paper mill and would result in significant reduction in problems caused by accumulation of wood extractives.
Maximum wood extractive removal was achieved by flotation with the addition of 80 mg/L of the cationic surfactant dodecyltrimethylammonium bromide (DoTAB) at pH 5.0 and 60 șC for 20 min with an air flow of 4.5 L/min and impeller speed of 1300 rpm. Under these conditions the removal efficiency of total extractives was close to 95%. Process water treated in this way would be suitable for recirculation in a pulp or paper mill and would result in significant reduction in problems caused by accumulation of wood extractives.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | froth flotation, wood extractives, pitch, colloid, thermo-mechanical pulp, surfactant, dodecyltrimethylammonium bromide |
| Research Division: | Chemical Sciences |
| Research Group: | Other Chemical Sciences |
| Research Field: | Industrial Chemistry |
| Objective Division: | Manufacturing |
| Objective Group: | Wood, Wood Products and Paper |
| Objective Field: | Pulp and Paper |
| UTAS Author: | Singh, S (Ms Sonita Singh) |
| UTAS Author: | Stack, KR (Dr Karen Stack) |
| UTAS Author: | Lewis, TW (Dr Trevor Lewis) |
| ID Code: | 110277 |
| Year Published: | 2016 |
| Deposited By: | Chemistry |
| Deposited On: | 2016-07-22 |
| Last Modified: | 2017-12-14 |
| Downloads: | 0 |
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