| Titre : |
On the recovery of natural fat and non ionic surfactant from sheepskin degreasing |
| Type de document : |
texte imprimé |
| Auteurs : |
Agusti Marsal, Auteur ; Albert M. Manich, Auteur ; M. de Castellar, Auteur ; Jaime Cot, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 207-214 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Woolskins with high natural fat content are subjected to the degreasing process. When this is carried out with non ionic surfactant in aqueous medium, a highly polluting emulsion consisting of salt, water, natural fat and non ionic surfactant is obtained. In order to reduce the contamination load, and a sludge or "fat paste" made up of water, salt, natural fat and non ionic surfactant are obtained sparately. Given the constitution of this "fat paste", no use has been found up to now. The aim of this work is to separate the natural fat from the surfactant which are present in the "fat paste". A first extraction with n-Hexane:ethyl ether (40:10) of silicia impregnated with the "fat paste", allows the total recovery of skin natural fat which is slightly contaminated by a small amount of surfactant. A successive extraction of the silica with methanol allows the surfactant (nonylphenol with 8 M EtO) to be totally recovered. |
| Note de contenu : |
- EXPERIMENTAL : Starting material - Spearation precedure - Regeneration of used silica gel - Analysis of the extracts
- RESULTS AND DISCUSSION : Determination of salt and water in the "fat paste" (optional) - "Fat paste"/silica gel ratio - Extraction of natural fat - Extraction of non ionic surfactant - Regeneration of used silica gel - Infrared spectrophotometry |
| En ligne : |
https://drive.google.com/file/d/1YwVK7QODIE84Ns8LmiHaDlBAxSTuXzNW/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4501 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIII, N° 7 (09/1998) . - p. 207-214
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On the recovery of natural fat and non ionic surfactant from sheepskin degreasing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIII, N° 7 (09/1998)
