[article]
| Titre : |
Extraction of value added byproducts from the treatment of chromium containing collagenous leather industry waste |
| Type de document : |
texte imprimé |
| Auteurs : |
Maryann M. Taylor, Auteur ; Luisa F. Cabeza, Auteur ; William N. Marmer, Auteur ; Eleanor M. Brown, Auteur ; C. J. Thompson, Auteur ; Edward J. Diefendorf, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
p. 5-13 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
Tannage chrome Extraction sous-produits collagène Déchets solides Industrie cuir Traitement alcali enzymes Produits hydrolisés Recyclage |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In the United States, over 60 000 metric tons of chromium containing solid waste is generated by the leather industry each year, and approximately ten times this amount is generated world-wide. Environmental concerns and escalating landfill costs are becoming increasingly serious problems to the leather industry and alternative disposal methods are needed. We have developed two processes in which this waste is treated with alkali and enzymes to extract hydrolyzed and gelable protein products and a recyclable chromium cake. We have demonstrated that these processes are repeatable with respect to their chemical and physical properties and that good and repeatable material balances are obtained. The isolated chromium can be chemically treated and recycled into the tanning process. The recovered protein fractions, practically devoid of chromium, could be used in a wide range of products, including adhesives, cosmetics, films, animal feed and fertilizer. |
| En ligne : |
https://drive.google.com/file/d/186TYoO7d7ao1ilMwxu-b8rmf_AsfGLuk/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8075 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 81, N° 1 (01-02/1997) . - p. 5-13
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Extraction of value added byproducts from the treatment of chromium containing collagenous leather industry waste in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 81, N° 1 (01-02/1997)
