Titre : |
CO2 Deliming |
Type de document : |
texte imprimé |
Auteurs : |
Michael J. Klaasse, Auteur |
Année de publication : |
1990 |
Article en page(s) : |
p. 431-441 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
Résumé : |
Increasing environmental pressures are forcing tannery to reduce the level of nitrogenous compounds in their effluent. A substantial portion of this problem is due to the use of ammonium compounds for deliming. An environmentally friendly method of deliming using gaseous CO2 can greatly reduce or, in some cases, completely eliminate the use of ammonium salts.
This paper details the development of the CO2 deliming process. It draws upon experience gained through extensive lab drum testing as well as full-scale drum and mixer operations. It focuses on :
1) the chemistry of CO2 deliming ;
2) advantages versus conventional deliming methods ;
3) implementation techniques ;
4) the effects of process parameters (e.g. temperature), and ;
5) controlling hydrogen sulfide formation.
At least 11 tanneries in the United States and Europe are currently using the CO2 deliming process. This proven technology offers considerable benefits over conventional deliming techniques and can be economically incorporated into the operations of most tanneries. |
En ligne : |
https://drive.google.com/file/d/1uCY4x6shV4wR9GmGMf9DlkW_9dwJDC5m/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8821 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXV (Année 1990) . - p. 431-441