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dc.contributor.author Costanza, Vicente
dc.contributor.author Costanza, Pedro
dc.date.available 2017-12-10T15:44:14Z
dc.date.issued 2002-12
dc.identifier.citation Costanza, Vicente; Costanza, Pedro; Estimating Pure Diffusion Contributions in Alkaline Pulping Processes; Plapiqui; Latin American Applied Research; 32; 12-2002; 151-159
dc.identifier.issn 0327-0793
dc.identifier.uri http://hdl.handle.net/11336/30064
dc.description.abstract A model that predicts isothermal alkali diffusion and reaction with acetyl groups in moist wood chips was derived and approximated. System parameters were estimated from unsteady-state experimental data. Simulation results reinforce the idea that the diffusion effect is not fully exploited in pulping processes. Traditionally, digestion is conducted at high temperature, where delignification reaction kinetics is enhanced and the reaction effect is predominant. This approach is being reviewed by modern industry since energy and environmental savings associated with low temperature operation might compensate for high-yield productivity. The concentration of alkali at the center of the chip is a measure of the completeness of wood deacetylation, which translates into the aptitude of the final product for pulping purposes. This concentration is predicted here from the solution to a pair of coupled ODE’s. Since alternatives combining both low and high-temperature processes are being studied, the results in this paper provide basic data for optimization analysis.
dc.format application/pdf
dc.language.iso eng
dc.publisher Plapiqui
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject reaction–diffusion
dc.subject wood pulping
dc.subject alkaline pulping
dc.subject impregnation
dc.subject transport phenomena
dc.subject.classification Otras Ingeniería Química
dc.subject.classification Ingeniería Química
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.title Estimating Pure Diffusion Contributions in Alkaline Pulping Processes
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-11-24T13:44:07Z
dc.identifier.eissn 1851-8796
dc.journal.volume 32
dc.journal.pagination 151-159
dc.journal.pais Argentina
dc.description.fil Fil: Costanza, Vicente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil Fil: Costanza, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.journal.title Latin American Applied Research
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.laar.uns.edu.ar/indexes/artic_v3202/32_(2002)_151_159.pdf


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  • Articulos(INTEC) [1346]
    Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)

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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)