| Titre : |
Improvement of the mass and energy balances in the tanning industry |
| Type de document : |
texte imprimé |
| Auteurs : |
Bernard Vulliermet, Auteur |
| Année de publication : |
1980 |
| Article en page(s) : |
p. 233-275 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
After an introduction on the impact of the tanning industry on the natural environment (especially its toxic effect) this lecture discusses the interaction between the mass and energy balances in the industry. The results of the last ten years of studies performed in the Centre Technique du Cuir allow these two balances to be improved by :
- Direct recycling of liming and chromium tanning floats
- Recovery of keratinous protein by ultrafiltration
- Recovery of fats and collagenous protein from fleshings
- Production of new man-made materials from tanned wastes
- Production of collagen derivatives from splits and trimmings for cosmetic and medical use
- Energy savings by heat-pump-type dryers.
All of these low-waste technologies and solid wastes valorization processes are now used under full-scale industrial conditions. They lower the production load on environment, reduce cost of treating the residual pollution, and improve the public image of the tanning industry, without affecting leather quality. |
| Note de contenu : |
EFFLUENT MANAGEMENT :
- Toxic impact of tannery effluent : Experimental results with activated sludges (The comparison of hexavalent and trivalent chromium - The case of sodium sulfide) - Acute toxicity tests - Conclusion from the toxicity tests
- The recycling of residual float containing sodium sulfide and chromium salts : The direct recycling of spent lime liquor (The analysis of the problem - Process reliability - The evolution of other components) - The separation of Na2 and proteins by ultrafiltration (Tests) - Direct recycing of tanning float
- CONCLUSION ON WASTE WATER MANAGEMENT
SOLID WASTES MANAGEMENT :
- COLLLAGEN PRODUCTS FROM LIMED SPLITS FOR COSMETICS AND MEDICAL APPLICATIONS
- THE TREATMENT OF NONTANNED TANNERY WASTE (FLESHINGS AND TRIMMINGS) : Description of the waste treatment plant - Protein meal from untanne hide (Chemical composition - Tests on animals)
- THE TREATMENT OF TANNED WASTE : The production of leather fiber - Production technology for DERMOMAT - Sol 300
ENERGY MANAGEMENT :
- ENERGY SAVINGS IN DRYING OPERATIONS
- IMPROVEMENTS IN THE ECONOMICS OF DRYING
- PULSED AIR DRIERS
- THE DEHUMIDIFICATION OF AIR BY HEAT PUMP DRIER : Principle of the water separation device - Advantages of the process |
| En ligne : |
https://drive.google.com/file/d/1cT89oNgmDke8_lnqwix34Ft58Exm-qal/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17769 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXV (Année 1980) . - p. 233-275
Aller sur edunet
Accueil
Improvement of the mass and energy balances in the tanning industry in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXV (Année 1980)
