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Tannery waste minimization / Catherine A. Money in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 7 (07/1991)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 7 (07/1991) . - p. 229-244 Titre : Tannery waste minimization Type de document : texte imprimé Auteurs : Catherine A. Money, Auteur Année de publication : 1991 Article en page(s) : p. 229-244 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Considerable progress has been made in reducing tannery waste but there is a renewed challenge for leather chemists to develop new technologies to cope with increasingly stringent regulations. They must also ensure that environmental legislation is reasonable, especially when it impacts on the use of chromium 3. The ecological effects of chromium 3 are reviewed and it is argued that chrome tanning is a sustainable process. CSIRO research has focused on the development of processes to minimize waste. Three approaches have been taken: waste reduction by improving the quality of hides, skins and leather, effluent minimization and the utilization of waste products. The research has included improving or eliminating preservation of hides and skins, the Siroskin anti-felting process for woolskin processing, direct chrome-liquor recycling, recycling of unhairing liquors, the Sirolime unhairing processes reduce salt levels and this is most important in inland areas, especially where tannery effluent is used for irrigation. Research projects in progress include a rapid, ammonia-free, carbon dioxide deliming process for unsplit hides, improved exhaustion and fixation of chrome, white tannages and better utilization of Australian sheepskins. En ligne : https://drive.google.com/file/d/1c6AmHO939Z5JhuS7u1G4lOUH_7kPDqoV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8479 [article]

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Leather and technology in the age of chrome / Ludwig Seligsberger in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 7 (07/1991)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 7 (07/1991) . - p. 245-258 Titre : Leather and technology in the age of chrome Type de document : texte imprimé Auteurs : Ludwig Seligsberger, Auteur Année de publication : 1991 Article en page(s) : p. 245-258 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The introduction of the two-bath process was the subject of a recent paper by Stellmach. No less revolutionary was the shift in the one-bath tannage from chrome alum to basic chrome salts. The suppliers of these chrome extracts became adept at modifying them to save the tanner time and nearly to eliminated the chrome content of waste liquors. These and other changes taking place in the manufacture of leather induced governments and institutes devoted to research and engineering and to open national tanners' schools. International and national societies formed and bagan to hold annual or biennal conventions. Periodicals were founded, spreading the latest word on theory and practice of converting hides and skins into leather. These developments are reviewed with particular emphasis on the United States. Promising new technologies including "reconstitued collagen", solvent tannages and various ultra-rapid methods aimed at reducing sludge and effluent to a minimum are surveyed. Several synthetic tanning materials born out of necessity in Germany and the US during World War Il could not maintain as large a share of the market as was necessary for them to be produced in peacetime. Finally, the most recent trend toward the partial or complete elimination of chrome, for instance by replacing wet blues with aluminum-tanned wet whites, is briefly discussed. En ligne : https://drive.google.com/file/d/1VAwD7QLjbGk8TWIbUXJ5es_znQ_umERe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8480 [article]

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