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JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) . Vol. CIX, N° 8Mention de date : 08/2014Paru le : 10/08/2014 |
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Ajouter le résultat dans votre panierThe 55th John Arthur Wilson lecture : Some considerations about international technical cooperation in the tanning industry / Jakov Buljan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 8 (08/2014)
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Titre : The 55th John Arthur Wilson lecture : Some considerations about international technical cooperation in the tanning industry Type de document : texte imprimé Auteurs : Jakov Buljan, Auteur Année de publication : 2014 Article en page(s) : p. 248-260 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coopération internationale
Cuirs et peaux -- Industrie
Nations Unies -- Assistance technique
Tannage
Tannage -- Aspect de l'environnementIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Bilateral and multilateral cooperation should coexist and synergistically supplement each other in an effort towards improving living standards in poor developing countries for a safer and prosperous world. Otherwise, in the long-term, it is very unlikely that sophisticated technology and advanced security systems will be able to provide an effective shield against manipulated despair of millions born in poverty with no hope for better future. Indeed, as domination and pecking order are part of our nature, mutual support has been essential for survival of humans; white earlier it mainly included the extended family, tribe or nation, now, in the globalized and nuclearized world it encompasses the whole world. Note de contenu : - FIRST THINGS FIRST : WHY COOPERATE, WHY HELP ?
- UNITED NATIONS INDUSTRIAL DEVELOPMENT ORGANIZATION, UNIDO : SALIENT FEATURES
- IS THE LEATHER SECTOR RELEVANT, SUSTAINABLE AND WORTH SUPPORT ?
- WHAT IS THE ENVIRONMENTAL IMPACT OF TANNING OPERATIONS ? IS IT WORTH INTERNATIONAL ASSISTANCE ? : 1. Hides and skins processed and waste water produced globally - 2. Consumption of chemicals - Pollution load
- THE GENERAL SET UP OF UNIDO PROJECTS OF TECHNICAL ASSISTANCE (TA) TO THE TANNING SECTOR
- TRAINING ACTIVITIES
- CLEANER TECHNOLOGIES AND UNREALISTIC EXPECTATIONS BY DONORS AND RECIPIENTS
- SOME EXAMPLES OF UNIDO PROJECTS OF TA
- UNIDO LEATHER AND LEATHER PRODUCTS INDUSTRY PANEL
- UNIDO TA TO THE TANNING SECTOR IN NEW CIRCUMSTANCES
- WHAT ARE THE MOST PRESSING ISSUES/CHALLENGES CONFRONTED BY THE INDUSTRY ?
- THE FUTURE OF LEATHER - OR - IS LEATHER STILL NEEDED ? - MYTHS AND REALITYEn ligne : https://drive.google.com/file/d/1b3gjv8b2cJcOh298AhCvVEgNTmMzJamj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21785
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Code-barres Cote Support Localisation Section Disponibilité 16444 - Périodique Bibliothèque principale Documentaires Disponible Advances in understanding of enzymatic unhairing of bovine hides / Marcelo Fraga de Sousa in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 8 (08/2014)
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Titre : Advances in understanding of enzymatic unhairing of bovine hides Type de document : texte imprimé Auteurs : Marcelo Fraga de Sousa, Auteur Année de publication : 2014 Article en page(s) : p. 268-277 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux de bovins
Epilage enzymatiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The unhairing process is the most significant contributor to pollution load in the beamhouse. This has made unhairing one of most investigated areas over the past few decades, where the focus has been to reduce the amount of sulfur-based chemistry used during processing. In a country like Brazil, with 36 million hides processed every year, the amount of sodium sulfide applied during unhairing is around 10.800 tons/year, which represents approximately 2.200* ton of sulfur added to the process.
A conventional unhairing process for bovine hides normally uses sulfide, sulfhydrate, lime, surfactants, and one or more auxiliaries based on mercaptans, thioglycolate, amines, urea, enzymes, or combination of these. The use of such auxiliaries was introduced many years ago with the purpose of reducing the amount of sulfide/sulfhydrate applied, while improving the efficiency of hair removal and helping to control swelling. Since then, many types of unhairing auxiliaries have come to the market, with different chemical compositions, for different purposes and with different efficiencies. Nevertheless, when the amount of sulfide/sulfhydrate needs to be reduced to very low levels without diminishing the quality of the unhairing and at reasonable cost, enzymatic auxiliaries are the preferred and logical choices.
In this paper we will present the results from an enzymatic unhairing process developed by Buckman that allowed the reduction of Na2S offer to half of the normal levels. In addition to reducing the environmental impact of unhairing - and the whole beamhouse operation - the process also produced significant benefits in terms of increased area yield (from raw hide to wetblue), improved flatness, and less drawing while maintaining the same characteristics of grain integrity and tightness.Note de contenu : - The basement membrane
- Laminins, collagen IV and collagen VII
- Enzymatic assisted unhairing
- MATERIALS AND METHODS : Pilot scale evaluations - Industrial scale evaluationsEn ligne : https://drive.google.com/file/d/1T1IcbVrFH4PIACNlHfAlf3hKtRWW9l1_/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21786
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIX, N° 8 (08/2014) . - p. 268-277[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16444 - Périodique Bibliothèque principale Documentaires Disponible
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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16444 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |