New tool to monitor biofilm growth in industrial process waters / Angeles Blanco in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5766–5773 Titre : New tool to monitor biofilm growth in industrial process waters Type de document : texte imprimé Auteurs : Angeles Blanco, Auteur ; Esperanza Torres, Auteur ; Elena Fuente, Auteur Année de publication : 2011 Article en page(s) : pp. 5766–5773 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Biofilm Industrial process waters Résumé : A new online methodology based on a continuous process video microscopy and image analysis has been developed to study the effects of enzymes on the formation of biofilm. This research consists of two parts: (1) the monitoring of the growth of a biofilm formed with the axenic culture isolated from the process waters of a recycling paper mill, aiming at determining the most appropriate way to quantify the biofilm growth from the obtained images; and (2) the study of the effects of three new enzymatic products on biofilm formation involving the natural flora of microorganisms present in the process water of the paper mill. The results demonstrate that the new methodology based on image analysis allows monitoring of the formation of biofilm and selecting the most efficient biofilm control product. The study also shows that enzymatic products could be an alternative for biocides on biofilm prevention and control. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101422m [article] New tool to monitor biofilm growth in industrial process waters [texte imprimé] / Angeles Blanco, Auteur ; Esperanza Torres, Auteur ; Elena Fuente, Auteur . - 2011 . - pp. 5766–5773. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5766–5773 Mots-clés : Biofilm Industrial process waters Résumé : A new online methodology based on a continuous process video microscopy and image analysis has been developed to study the effects of enzymes on the formation of biofilm. This research consists of two parts: (1) the monitoring of the growth of a biofilm formed with the axenic culture isolated from the process waters of a recycling paper mill, aiming at determining the most appropriate way to quantify the biofilm growth from the obtained images; and (2) the study of the effects of three new enzymatic products on biofilm formation involving the natural flora of microorganisms present in the process water of the paper mill. The results demonstrate that the new methodology based on image analysis allows monitoring of the formation of biofilm and selecting the most efficient biofilm control product. The study also shows that enzymatic products could be an alternative for biocides on biofilm prevention and control. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101422m

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Polymeric branched flocculant effect on the flocculation process of pulp suspensions in the papermaking industry / Angeles Blanco in Industrial & engineering chemistry research, Vol. 48 N° 10 (Mai 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4826–4836 Titre : Polymeric branched flocculant effect on the flocculation process of pulp suspensions in the papermaking industry Type de document : texte imprimé Auteurs : Angeles Blanco, Auteur ; Elena Fuente, Auteur ; M. Concepcion Monte, Auteur Année de publication : 2009 Article en page(s) : pp. 4826–4836 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Cationic polyacrylamides Pulp suspensions Floc properties Focused beam reflectance measurement Résumé : This paper presents the effect of the structure of cationic polyacrylamides (CPAMs) on flocculation of pulp suspensions and floc properties. A focused beam reflectance measurement (FBRM) probe was used to monitor flocculation, deflocculation, and reflocculation processes in real time. To carry out the study, 1% elemental chlorine free (ECF) eucalyptus kraft pulp containing 20% ground calcium carbonate (GCC) was used. Results show that the effect of the CPAM structure depends on charge density and polymer dose. Floc size does not always decrease with branching degree, whereas floc stability and reflocculation ability increased when highly charged and branched CPAM was used. These findings indicate that the use of highly branched CPAMs with very high molecular weight is very promising as a retention aid method to improve the papermaking process. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8011837 [article] Polymeric branched flocculant effect on the flocculation process of pulp suspensions in the papermaking industry [texte imprimé] / Angeles Blanco, Auteur ; Elena Fuente, Auteur ; M. Concepcion Monte, Auteur . - 2009 . - pp. 4826–4836. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4826–4836 Mots-clés : Cationic polyacrylamides Pulp suspensions Floc properties Focused beam reflectance measurement Résumé : This paper presents the effect of the structure of cationic polyacrylamides (CPAMs) on flocculation of pulp suspensions and floc properties. A focused beam reflectance measurement (FBRM) probe was used to monitor flocculation, deflocculation, and reflocculation processes in real time. To carry out the study, 1% elemental chlorine free (ECF) eucalyptus kraft pulp containing 20% ground calcium carbonate (GCC) was used. Results show that the effect of the CPAM structure depends on charge density and polymer dose. Floc size does not always decrease with branching degree, whereas floc stability and reflocculation ability increased when highly charged and branched CPAM was used. These findings indicate that the use of highly branched CPAMs with very high molecular weight is very promising as a retention aid method to improve the papermaking process. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8011837

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