| Titre : |
Leather retanning ith hydrolyzed protein |
| Type de document : |
texte imprimé |
| Auteurs : |
Mariliz Gutterres, Auteur ; Igor Vigannico da Silva, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 195-202 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Large quantities of solid waste containing chromium are generated by the leather industry. In recent years the specialized literature has described protein and chromium recovery processes. The molecular weight spectrum of the recovered protein shows that for retanning purposes the average molecular weight is too low. This study aimed to obtain an environmentally friendly protein modification process to generate high molecular weight proetin to be used in the retanning step of leather wet processing. The aim was to test potential modifications to hydrolyzed protein using different tanning agents to generate retanning products The retanning agents developed were applied in experiments on leather retanning, where the influence of the addition of vegetable tannin was aslo evaluated. The controlled variables were molecular weight of the tanning preparations, leather characteristics (compressibility, density, physical-mechanical resistance, grain firmness, and color) and the COD of the wastewater. The results obtained indicated the possibility to use hydrolyzed protein combined with glutaraldehyde as a retanning agent to obtain good quality leather. |
| En ligne : |
https://drive.google.com/file/d/1FgWx0jBbDShjAo0U-01vSt8sivKGKXDu/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9455 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 6 (06/2010) . - p. 195-202
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