| Titre : |
Moisture desorption characteristics of raw sheep and goat skins : A tool for eco-friendly method of preservation |
| Type de document : |
texte imprimé |
| Auteurs : |
D. Murugan, Auteur ; C. L. Rai, Auteur ; M. Sivarajan, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 32-40 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuirs et peaux -- Conservation
Cuirs et peaux -- Séchage
Cuirs et peaux de chèvres
Cuirs et peaux de moutons
Désorption
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Preservation of animal skins by conventional salt or brine curing methods leads to environmental pollution. Controlled drying up to acceptable moisture levels could be an effective, cleaner and environmentally friendly alternative for skin preservation. The selection of optimum storage and drying conditions requires the knowledge of moisture desorption isotherms. Hence this work focuses on the experimental determination of desorption isotherms for south Indian sheep and goat skins at three different temperatures 30, 40 and 45°C. The goodness of fit of four sorption models to experimental results was determined. Of the models tested, the modified Oswin gave the best fit followed by modified Halsey. Modified Henderson and modified Chung Pfost models showed relatively larger deviations from the experimental values. The deviation was larger in sheep skins compared to goat skins. The net isosteric heat of sorption was determined for both sheep and goat skins using the Clausius - Clapeyron equation and is expressed mathematically as an empirical polynomial function of equilibrium moisture content. The net isosteric heat of sorption for sheep skin was higher than the goat skin. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Methods (Estimation of free and bound moisture - Pre-drying - Drying studies at thermodynamic equilibrium) - Analysis of sorption data - Determination of heat of sorption
- RESULTS AND DISCUSSIONS : Free ant total moisture - Moisture sorption isotherms - Fitting sorption models to experimental isotherms - Heat of sorption
|
| En ligne : |
https://drive.google.com/file/d/1Ze2saxW5H9hEVP6I4SQqh6WKFVpVHst_/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17367 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 2 (02/2013) . - p. 32-40
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