Combined organic tanning based on mimosa and oxazolidine : development of a semi-industrial scale process for high-quality bovine upper leather / A. d'aquino in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 2 (03-04/2004)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 88, N° 2 (03-04/2004) . - p. 47-55 Titre : Combined organic tanning based on mimosa and oxazolidine : development of a semi-industrial scale process for high-quality bovine upper leather Type de document : texte imprimé Auteurs : A. d'aquino, Auteur ; N. Barbani, Auteur ; G. d'Elia, Auteur ; D. Lupinacci, Auteur ; Biagio Naviglio, Auteur ; Maurizia Seggiani, Auteur Année de publication : 2004 Article en page(s) : p. 47-55 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Cuirs et peaux de bovins Mimosa et constituants Oxazolidine Réticulants Tannage combiné Le tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique Tannage organique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this study we present an industrial-scaled tanning process intended to replace chrome tanning in the production of high quality bovine shoe upper leathers using a combined tannage based on a mimosa and oxazolidine as crosslinking agent. This paper reports the best recipe developed and the properties of the leather obtained. The various test results and scanning electron microscopy (SEM) observations which were used as investigative methods to follow the tanning process steps and to better understand the cross-linking mechanisms, are detailed together with the characterisation of the effluents. The leather obtained is characterised by a good hydrothermal stability coupled with good physical and technical properties which allow it to easily comply with the standards required for high quality chromium-tanned bovine upper leather. The results obtained suggest that this tannage is a promising alternative to traditional chrome tanning. Note de contenu : - Interactions between the collagen structure, mimosa, and oxazolidine - Laboratory scale investigation - Semi-industrial scale investigation and properties of the crust leather - SEM analysis - Characterization of the exhaust bath of the mimosaoxazolidine tannage - Table 1 : Pre-tanning and tanning agents used - Table 2 : Steps of fatliquoring/dyeing process (offers: wt.% based on tanned weight) - Table 3 : Steps of the Mimosa-Oxazolidine tanning process - Table 4 : Steps of the Oxazolidine-Mimosa tanning process - Table 5 : Pollutants in the exhaust bath of the mimosa-oxazolidine tannage compared with a typical chromium exhaust bath En ligne : https://drive.google.com/file/d/18RDaXSoVzI-3FZsq97w_hp0jR9_xLdOu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39641 [article]

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Life cycle assessment (LCA) of the oxidative unhairing process by hydrogen peroxide / Domenico Castiello in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 1 (01/2008)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIII, N° 1 (01/2008) . - p. 1 - 6 Titre : Life cycle assessment (LCA) of the oxidative unhairing process by hydrogen peroxide Type de document : texte imprimé Auteurs : Domenico Castiello, Auteur ; Monica Puccini, Auteur ; Maurizia Seggiani, Auteur ; Sandra Vitolo, Auteur ; Francesco Zammori, Auteur Année de publication : 2008 Article en page(s) : p. 1 - 6 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux Epilage oxydatif Peroxyde d'hydrogène Le peroxyde d'hydrogène (H2O2), communément appelé eau oxygénée ou encore perhydrol (appellation industrielle), est un composé chimique liquide et visqueux, aux puissantes propriétés oxydantes (il est aussi réducteur). C'est donc un agent blanchissant efficace qui sert de désinfectant et (à haute concentration) d'oxydant ou monergol dans les fusées spatiales. Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The ever increasing attention to the environmental impact of the process industry imposes an obligation to constantly improve the global sustainability of the tanning process. Among the numerous phases of the tanning process, the beamhouse accounts for most of the total polluting charge, due to the use of sodium sulfide and lime during the manufacturing process of hides. Hence, the authors have recently developed an alternative unhairing process that eliminates the use of sulfides. The actual reduction of the environmental impact of this process, in relation with the traditional one, was evaluated performing a Life Cycle Assesment (LCA) using SimaPro 6, one of the most used software for LCA analysis. Environmental impacts were finally rated using “EDIP 97” assessing methodology. Since impact assessment methodologies were mainly developed for the manufacturing field, EDIP 97 was slightly modified and adapted to fit with the tannery industry. En ligne : https://drive.google.com/file/d/1qyXVkedJkflH9aqtm7CywGN4kT50xzQ7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2580 [article]

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Oxidative unhairing with hydrogen peroxide : development of an industrial scale process for high-quality upper leather / S. Bronco in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 2 (02/2005)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 2 (02/2005) . - p. 45-53 Titre : Oxidative unhairing with hydrogen peroxide : development of an industrial scale process for high-quality upper leather Type de document : texte imprimé Auteurs : S. Bronco, Auteur ; Sandra Vitolo, Auteur ; Maurizia Seggiani, Auteur ; M. Salvadori, Auteur ; G. d'Elia, Auteur ; D. Castielo, Auteur Année de publication : 2005 Article en page(s) : p. 45-53 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : As an alternative to the traditional process based on the use of sulfides, an unhairing process in drum by hydrogen peroxide was developed for the production of high-quality bovine upper leather. A preliminary investigation at laboratory scale has allowed us to set out the optimal process conditions, in terms of H2O2 dosage and pH, in order to achieve an effective unhairing and a compatible swelling of the hide. The pilot and industrial scale runs have assessed the industrial feasibility of the process that allows the production of a versatile base for different final applications of the leather (either chrome or vegetable tanned), and appear practical to implement as well as compatible with existing machinery. The finished leather obtained by the innovative unhairing process shows good physical-mechanical and technical properties comparable with those of the traditional process, and the leather was technically assessed as satisfactory and suitable for use in the production of high quality upper leathers. The major pollutants of the oxidative unhairing, either as absolute concentrations or if normalized with respect to the salted weight of hide processed, appear quite similar to those from the traditional process. The evident advantage is obviously the complete absence of dissolved sulfides in the exhaust baths of the oxidative process. Scanning electron microscopy was used as investigation method to better understand the mechanism of the oxidative unhairing in comparison with the traditional. En ligne : https://drive.google.com/file/d/1r9dNeH9n5FPgt2ADVOdqhb0OpkXBFRdb/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4076 [article]

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A practical evaluation of acrylic resins and the development of a materials evaluation method / M. Bientinesi in WORLD LEATHER, Vol. 18, N° 4 (06-07/2005)  

[article]  inWORLD LEATHER > Vol. 18, N° 4 (06-07/2005) . - p. 31-35 Titre : A practical evaluation of acrylic resins and the development of a materials evaluation method Type de document : texte imprimé Auteurs : M. Bientinesi, Auteur ; Maurizia Seggiani, Auteur ; Sandra Vitolo, Auteur ; Domenico Castiello, Auteur ; M. Salvadori, Auteur Année de publication : 2005 Article en page(s) : p. 31-35 Langues : Anglais (eng) Catégories : Agents de tannage Cuirs et peaux -- Analyse Essais (technologie) Evaluation Indice des prix Polyacryliques Polymères -- Analyse Retannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study describes a method for evaluating commercial acrylic resins as used in retannage. By means of in-house tests, this technique can prove useful to tanneries in the selection of resin retanning agents that, from a cost-effectiveness point of view, best suit their purposes. The technique has been used previously in an evaluation of dyestuffs and, furthermore, it is believed that this method can be used as a powerful tool within any manufacturing process as part of product or component evaluation. Note de contenu : - The study - Consistency tests - Determination of the performance index - Determination of the price index - Findings from the investigation - The performance index - The final product evaluation - Findings from the investigation - Fig. 1 : Standard procedure for retanning, dyeing and fatliquoring - Fig. 2 : Weightings attributed to tactile parameters of finished leather - Fig. 3 : Dry solids content of resins - Fig. 4 : Lastometer test results - Fig. 5 : Evaluation of retanned, fatliquored and dyed leathers - Fig. 6 : Price index for resins - Fig. 7 : Final evaluation of resins examined - Panel 1 : Price index calculations for resins En ligne : https://drive.google.com/file/d/1JRiRbDpp1z_yI_qImQR3AimWuGELVlcs/view?usp=drive [...] Format de la ressource électronique : pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32465 [article]

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Sustainability in process innovation : development of a green tanning process supported by LCA methodology / Monica Puccini in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 4 (04/2014)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIX, N° 4 (04/2014) . - p. 110-116 Titre : Sustainability in process innovation : development of a green tanning process supported by LCA methodology Type de document : texte imprimé Auteurs : Monica Puccini, Auteur ; Maurizia Seggiani, Auteur ; Domenico Castiello, Auteur ; Sandra Vitolo, Auteur Année de publication : 2014 Article en page(s) : p. 110-116 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Industrie -- Aspect de l'environnement Développement durable Durée de vie (Ingénierie) Environnement -- Etudes d'impact Glucose Innovations Ressources renouvelables Tannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : As a response to the growing concerns about a variety of environmental issues expressed by public opinion and political bodies, the leather industry needs to support its market by environmental criteria as a guarantee of quality. For this reason, assessment tools as Life Cycle Assessment (LCA) methodology, which allow a more thorough knowledge of the products to the enterprises and can help to guide the environmental policies, are recommended (e.g. EC Directive on Ecologic Labels). The LCA methodology, described in details by the ISO 14000 series, allows the assessment of the environmental impacts due to products, processes, or services, by the identification of the inputs (e.g. energy and material consumption) and outputs (e.g. waste and pollutant production) streams exchanged by the process with the environment (i.e. from raw materials procurement to waste streams disposal). The application of LCA as tool for integration of sustainability aspects in process design and development is gaining wider acceptance and methodological development. In this study, the life cycle modeling was used to support the development of a novel tanning process based on the use of a new class of tanning agent produced from renewable resources (e.g. glucose). The experimental activity performed to investigate the technical feasibility of the innovative tanning cycle was supported by the modelling of the process using the LCA methodology in order to assess the environmental performance of the leather production cycle. Therefore, an LCA analysis was performed in order to compare the glucose-tannage process with the traditional one from an environmental point of view. Note de contenu : - Process description - Goal definition and functional unit - Inventory analysis - Impact assessment method En ligne : https://drive.google.com/file/d/1Ykwkd1DzTJMoQ9Zt7-Wgh_PABUz_I4ar/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21083 [article]

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Tara-aluminum tanning as an alternative to traditional chrome tanning : Development of a pilot-scale process for high-quality bovine upper leather / Sandra Vitolo in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 4 (04/2003)  

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Use of sodium silicate to improve the environmental aspects of traditional chrome tanning : development of a semi-industrial scaled process for high-quality bovine upper leather / A. d'aquino in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 1 (01/2004)  

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