[article]
| Titre : |
Evaluation of urea sulfate as a replacement for sulfuric acid in chrome tanning |
| Type de document : |
texte imprimé |
| Auteurs : |
Andrew G. Gehring, Auteur ; David G. Bailey, Auteur ; Gary L. DiMaio, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 268-274 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Concentrated sulfuric acid is a noxious and corrosive chemical that must be handled with extreme care by workers in the leather tanning industry. A safe alternative to sulfuric acid in the chrome tanning process would be desirable if the alternative was demonstrated to be an equally efficient replacement. Small steer hide pieces (unhaired and bated) were treated with either sulfuric acid or urea sulfate, converted into leather, and physically tested in a laboratory bench scale study. Large hide pieces (unhaired and bated matched sides) were chrome-tanned in a pilot plant, again to compare sulfuric acid with urea sulfate. This paper documents that physical testing (hide swelling, shrinkage temperature, stress/strain, quantification of chromium uptake) results exhibited no remarkable difference between either the sulfuric acid or urea sulfate treated hide pieces. These results demonstrate that urea sulfate would be an acceptable alternative for sulfuric acid should circumstances (economic, legally mandated environmental protection issues, safety, etc.) warrant it. |
| En ligne : |
https://drive.google.com/file/d/1F1ORzM0qgm5ym_zHKOU_ZI4Fjq9TF5m1/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4370 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVI, N° 7 (07/2001) . - p. 268-274
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Evaluation of urea sulfate as a replacement for sulfuric acid in chrome tanning in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVI, N° 7 (07/2001)
