[article]
| Titre : |
Efficiency of enzymic solubilization of chrome shavings as influenced by choice of alkalinity-inducing agents |
| Type de document : |
texte imprimé |
| Auteurs : |
Maryann M. Taylor, Auteur ; Edward J. Diefendorf, Auteur ; William N. Marmer, Auteur |
| Année de publication : |
1991 |
| Article en page(s) : |
p. 199-209 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Enzymic processing of chrome shavings has been shown to be a viable treatment of this waste product. Proteolytic enzymes, active at moderate temperatures, are effective in solubilizing the protein and, since the reaction takes place at an alkaline pH, the chromium remains insoluble. Various alkalinity-inducing agents, such as magnesium oxide, alone or in combination with calcium hydroxide, sodium hydroxide or sodium carbonate, can be employed to maintain the optimal environment for enzyme hydrolysis. These systems can be tailored to match the varied chrome-recycling steps that different tanneries employ. Some of these systems have improved the rate of solubilization of the shavings while lowering the required amount of enzyme, thus making the process more cost-effective. |
| En ligne : |
https://drive.google.com/file/d/1tDRf8LxiIA6RBi8a5d7LW4sqtIsZD_5N/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8494 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 6 (06/1991) . - p. 199-209
[article]
|
Aller sur edunet
Accueil
Efficiency of enzymic solubilization of chrome shavings as influenced by choice of alkalinity-inducing agents in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 6 (06/1991)
