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Adsorption behaviors of optical brightening agents and precipitated calcium carbonate onto pulp fibers / Hongjie Zhang in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9407–9412 Titre : Adsorption behaviors of optical brightening agents and precipitated calcium carbonate onto pulp fibers Type de document : texte imprimé Auteurs : Hongjie Zhang, Auteur ; Lanfeng Hui, Auteur ; Yonghao Ni, Auteur Année de publication : 2010 Article en page(s) : pp. 9407–9412 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Optical  brightening  agents  Adsorption Résumé : High-yield pulps (HYPs) can be used in the production of high-quality fine paper grades. In such applications, optical brightening agents (OBA) and inorganic fillers, such as precipitated calcium carbonate (PCC) may be used to improve the paper properties, including optical properties, such as brightness, whiteness, opacity. In this study, some fundamental parameters regarding OBA and PCC adsorption onto pulp fibers were investigated. Results showed that OBA was preferably adsorbed onto bleached kraft pulp (BKP) fibers than onto HYP fibers when present in a mixed furnish. The OBA adsorption at a low adsorbed amount followed the Langmuir adsorption isotherm for both BKP and HYP; the adsorbed OBA in a monolayer was more for the BKP than for the HYP. The PCC adsorption behaviors on the same two pulp systems, however, are different from those of OBA: the HYP had more PCC adsorption than the BKP. The results on the adsorption of PCC onto the HYP and kraft pulp fibers showed that they also followed the Langmuir kinetics very well. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1003976 [article] Adsorption behaviors of optical brightening agents and precipitated calcium carbonate onto pulp fibers [texte imprimé] / Hongjie Zhang, Auteur ; Lanfeng Hui, Auteur ; Yonghao Ni, Auteur . - 2010 . - pp. 9407–9412. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9407–9412 Mots-clés : Optical  brightening  agents  Adsorption Résumé : High-yield pulps (HYPs) can be used in the production of high-quality fine paper grades. In such applications, optical brightening agents (OBA) and inorganic fillers, such as precipitated calcium carbonate (PCC) may be used to improve the paper properties, including optical properties, such as brightness, whiteness, opacity. In this study, some fundamental parameters regarding OBA and PCC adsorption onto pulp fibers were investigated. Results showed that OBA was preferably adsorbed onto bleached kraft pulp (BKP) fibers than onto HYP fibers when present in a mixed furnish. The OBA adsorption at a low adsorbed amount followed the Langmuir adsorption isotherm for both BKP and HYP; the adsorbed OBA in a monolayer was more for the BKP than for the HYP. The PCC adsorption behaviors on the same two pulp systems, however, are different from those of OBA: the HYP had more PCC adsorption than the BKP. The results on the adsorption of PCC onto the HYP and kraft pulp fibers showed that they also followed the Langmuir kinetics very well. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1003976