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Vilaseca Morera, Fabiola
Puig Serramitja, Josep Pèlach Serra, Maria Àngels El Mansouri, Nour-Eddine Alcalà Vilavella, Manel Roux, Jean-Claude Mutjé Pujol, Pere |
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The disintegration of recovered paper is the first operation in the preparation of recycled pulp. It is known that the defibering process follows a first order kinetics from which it is possible to obtain the disintegration kinetic constant (KD) by means of different ways. The disintegration constant can be obtained from the Somerville index results (%lsv and from the dissipated energy per volume unit (Ss). The %slv is related to the quantity of non-defibrated paper, as a measure of the non-disintegrated fiber residual (percentage of flakes), which is expressed in disintegration time units. In this work, disintegration kinetics from recycled coated paper has been evaluated, working at 20 revise rotor speed and for different fiber consistency (6, 8, 10, 12 and 14%). The results showed that the values of experimental disintegration kinetic constant, Ko, through the analysis of Somerville index, as function of time. Increased, the disintegration time was drastically reduced. The calculation of the disintegration kinetic constant (modelled Ko), extracted from the Rayleigh’s dissipation function, showed a good correlation with the experimental values using the evolution of the Somerville index or with the dissipated energy | |
http://hdl.handle.net/2072/294587 | |
eng | |
North Carolina State University. Department of Wood and Paper Science, College of Natural Resources | |
Tots els drets reservats | |
Paper vell -- Reciclatge
Waste paper -- Recycling Cinètica quÃmica Chemical kinetics Paper -- Deterioració Paper -- Deterioration Pasta de paper Estucament del paper Wood-pulp Paper coating |
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Study and modeling of the desintegration kinetics of coated paper | |
info:eu-repo/semantics/article | |
Recercat |