| Titre : |
Immunisation action of sodium silicate on hair : part 2. Hair-save process based on lime substitution by sodium silicate |
| Type de document : |
texte imprimé |
| Auteurs : |
Justa Sirvaityte, Auteur ; Kestutis Beleska, Auteur ; V. Valeikienè, Auteur ; Viktoriia Plavan, Auteur ; Virgilijus Valeika, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 231-237 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Immunisation (épilage)
Peaux brutes
Silicate de sodium
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
A major contributor to the pollution from the tanning industry is conventional unhairing using sodium sulphide and lime. In this study, an attempt has been made to develop a lime-free unhairing process using sodium silicate as a hair immunization agent. The parameters of the unhairing process have also been optimized evaluating qualitative indexes of the hide during processes and the leather obtained as well. It was established that hair removal quality and chemical and strength properties of the experimental leathers are comparable to those control leathers. A significant reduction in chemical oxygen demand (COD), biochemical oxygen demand and total Kjeldahl nitrogen were obtained in comparison with the comparative data for the conventional unhairing with hair burning. |
| Note de contenu : |
TABLES : 1. Parameters of processes executed in laboratory conditions - 2. Methods of unhairing and their parameters - 3. Effect of unhairing method on hide qualitative indexes - 4. Parameters of derma opening stage - 5. Effect of both unhairing and derma opening up stages on hide properties - 6. Influence of unhairing-derma opening up method on hide properties after deliming-bating and chroming - 7. Indexes of leather depending on method of unhairing-derma opening up - 8. Comparison of selected indexes of pollution load (kg/t raw hide) after unhairing-derma opening process |
| En ligne : |
https://drive.google.com/file/d/1CiW_718M-ohBtYQXl99N_XUBsUK6GQpD/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24651 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 5 (09-10/2015) . - p. 231-237
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Immunisation action of sodium silicate on hair : part 2. Hair-save process based on lime substitution by sodium silicate in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 5 (09-10/2015)
