| Titre : |
Application of infusion from leaf of hisbiscus sabdariffa in deliming |
| Type de document : |
texte imprimé |
| Auteurs : |
J. D. Putshak'a, Auteur ; K. I. Adamu, Auteur ; F. S. Tanko, Auteur ; R. O. Iyun, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 11-15 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuirs et peaux
DéchaulageOpération consistant à débarrasser les peaux de la chaux et des substances alcalines qui leur ont été appliquées au pelanage.
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
For efficient control, and to produce a particularly fine grain in the leather, ammonium sulfate (or boric acid) is conventionally used as a deliming agent. It us used in the amounts necessary to neutralize the alkali in pelts after the liming and unhairing processes in leather manufacture. A 5% infusion from leaf of Hibiscus Sabdariffa was evaluated as an alternative deliming agent in leather processing. After extraction, the pH of the infusion was found to be 3.18. The deliming value of the infusion was determined by titrating the infusion against 20ml solution of 3% Calcium hydroxide. The volume of the infusion required and optimum time taken to delime 50g of limed pelt was also determined. Several deliming trials were also undertaken; complete deliming of limed pelt was achieved with 50ml of the infusion within a period of 40 minutes as against the deliming period of 1 hour recorded for solution of ammonium sulfate. From results obtained after deliming trials and from physical observations made on the pelts, the infusion was discovered to effectively delime pelts almost competing and compared favorably to the conventional deliming agents such as ammonium sulfate. The infusion of Hibiscus Sabdariffa can thus be introduced, after further investigation, for use as a deliming agent in the leather industry. |
| Note de contenu : |
- Sample collection and preparation
- Preparation of infusion
- Determination of pH of infusion and of conventional deliming agent
- Determination of deliming value
- Deliming trails
- Determination of volume of infusion to effectively delime pelt
- Optimum time for deliming by infusion |
| En ligne : |
https://drive.google.com/file/d/1-0X02FXoNwwqD1fnTDbz-TxyOCBbzYFk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16927 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 1 (01/2013) . - p. 11-15
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Application of infusion from leaf of hisbiscus sabdariffa in deliming in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 1 (01/2013)
