| Titre : |
Enzyme unhairing of skins in recycled liquors - A way to utilize the waste bath |
| Type de document : |
texte imprimé |
| Auteurs : |
Jian Song, Auteur ; Tao Wenyi, Auteur ; Wuyong Chen, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 250-255 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bain de trempe -- Recyclage
Cuirs et peaux
Epilage enzymatique
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In the leather industry, pollution is a serious problem. Moreover, unhairing is a heavy pollution process and the utilization of enzymes in unhairing is a promising clean technology.
Although there are numerous reports on enzymatic unhairing, little is known about the reuse of enzyme bath. In this paper, the recycling of the enzymatic unhairing bath was investigated. It was found that recycled liquors have little effect on the quality of finished leather. Only 46,8% of enzyme is used in the recycling process, compared with single use process. Moreover, the load of effluent is concentrated in reduced volume, that is to say, the effluent is easy to dispose. Another advantage is that the final bath whose main components are proteins can be refused as a fertilizer. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Determination of proteolytic activity - Effects of saccharide and gelatin on the activity of protease - Effect of EDTA on the conservationof the spent liquor - Preparation of pigskins - Conventional enzymatic unhairing without recycling - Enzymatic unhairing with the recycling - Assessment of the effectiveness of unhairing - Physical and mechanical properties
- RESULTS AND DISCUSSION : Effects of saccharides and gelatin on the activity of protease - Effect of EDTA on the conservation of the spent liquors - Recycling of the spent liquors - Effectiveness of unhairing - Pollution load of the spent liquor - Reuse of the final spent liquor |
| En ligne : |
https://drive.google.com/file/d/1TgeyYl56DNw3bcdGEq2wxafmk2L8Df7V/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16809 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 6 (11-12/2012) . - p. 250-255
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Enzyme unhairing of skins in recycled liquors - A way to utilize the waste bath in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 6 (11-12/2012)
