Accumulation of dissolved and colloidal material in papermaking - Application to simulation
Closure of water circuits in papermaking is of vital importance for achieving a more sustainable and economic manufacturing of paper. The most important limiting factor for a further closure is the accumulation of dissolved and colloidal materials (DCM). The extent to which DCM can become enriched i...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2009 |
| País: | España |
| Recursos: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/49492 |
| Acesso em linha: | https://hdl.handle.net/20.500.14352/49492 |
| Access Level: | acceso abierto |
| Palavra-chave: | Water circuits closure Accumulation of contaminants Dissolved and colloidal material Papermaking Simulation Accumulation factor Release factor Agua Ingeniería química Medio ambiente Química industrial Industria del papel 2303.31 Química del Agua 3303 Ingeniería y Tecnología Químicas 2391 Química Ambiental 3312.13 Tecnología de la Madera |
| Resumo: | Closure of water circuits in papermaking is of vital importance for achieving a more sustainable and economic manufacturing of paper. The most important limiting factor for a further closure is the accumulation of dissolved and colloidal materials (DCM). The extent to which DCM can become enriched in the water depends not only on how many times water is reused but also on the degree to which this matter becomes reattached to the fibers and other solid components of the paper furnish. This study analyzes the accumulation of the most typical contaminants in newsprint (NP) and light weight coated (LWC) paper production. Results show that the release of DCM depends on the present contaminant load in the waters: higher at lowcontaminant load and lower at high contaminant load. A simulationwas carried out to analyze the differences between assuming a constant and a variable release of contaminants to waters. Important differences were observed, especially at low fresh water consumption for those species with a major affinity for the fibers. |
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