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Continuous filtration and titration apparatus for real time monitoring of polyelectrolyte concentration and cationic demand of a paper furnish
KTH, Superseded Departments, Chemistry.
2003 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 18, no 1, 95-107 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents the application of a continuous real-time colorimetric titrator coupled to a continuous filtration apparatus, allowing polyelectrolyte concentration and cationic demand measurements to be undertaken on a paper furnish. A continuous filtration device is utilized that selectively separates dissolved and colloidal substances (DCS) from a paper furnish. By utilizing a back titration procedure, it was possible to utilize the continuous titration apparatus directly on the filtrate in order to monitor furnish charge on a pulp sample in real-time. The apparatus was utilized to study the dynamics of polyelectrolyte adsorption onto fiber surfaces, as well the change of fiber surface charge at varying pH values and for different pulp samples taken from the bleaching process of a kraft pulp.

Place, publisher, year, edition, pages
2003. Vol. 18, no 1, 95-107 p.
Keyword [en]
chemical monitoring, cationic demand, colloidal titration, colorimetry, cross-flow filtration, dissolved and colloidal components, on-line system, pitch problems, polyelectrolyte titration, toluidine blue, zeta potential, streaming current detector, wet-end charge, cellulosic materials, colloid titration, poly-electrolytes, adsorption, kraft, pulp, polyacrylamides, fibers
Identifiers
URN: urn:nbn:se:kth:diva-22441ISI: 000182384600015OAI: oai:DiVA.org:kth-22441DiVA: diva2:341139
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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