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Displacement washing of pulp with urea solutions
Potůček, F. and Pulcer, M. Displacement washing of pulp with urea solutions Chemical Papers, Vol.60, No. 5, 2006, 365-370
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Author(s) |
Potůček, F.
Pulcer, M.
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| Title |
Displacement washing of pulp with urea solutions
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| Journal name |
Chemical Papers
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| Publication date |
2006
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| Year available |
2006
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| Volume number |
60
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| Issue number |
5
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| ISSN |
0366-6352
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| Start page |
365
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| End page |
370
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2006
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| Language |
english
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| Subject |
250000 Chemical Sciences
250500 Macromolecular Chemistry
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| Abstract/Summary |
Two basic mechanisms of displacement washing of pulp fibres were investigated. Experiments were carried out in a laboratory washing cell that simulated a single stage of displacement washing. The step-change method has been employed in investigation of alkali lignin profile in outlet stream of washing effluents. The addition of urea to wash water resulted in a decrease of the liquid layer immobilized on the fibre surface. It had a positive effect on the washing efficiency expressed in terms of the void local efficiency.
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