| Titre : |
Salt-free chrome tanning |
| Type de document : |
texte imprimé |
| Auteurs : |
Victor John Sundar, Auteur ; T. Rangasamy, Auteur ; Chellappa Muralidharan, Auteur ; Asit Baran Mandal, Auteur |
| Année de publication : |
2012 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Chrome -- Suppression ou remplacement
Tannage -- Aspect de l'environnement
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Nearly 8-10 % of salt on the weight of a hide or skin is employed in the pickling operation. The salt let-out from the waste streams of pickling results in the generation of chlorides ant Total Dissolved Solids (TDS) in the order of 80 000 to 100 000 ppm. Conventional chrome tanning also generates substantial TDS due to lowering and raising of pH during tanning. The tanneries in Southern India employ membrane separation such as reverse osmosis (RO) in effluent treatment systems for removal of salt to meet stringent discharge norms. However, because of high salinity in the effluents, the viability of the treatment system is not ensured. Inadequacy and frequent failures often result in inability to meet discharge norms. The costs associated with the treatment and the disposal of huge quantities of reject arising from the RO plants are also a cause of concern for the tanners. CLRI team have now developed a salt-free tanning technology which solves the problems associated with salinity in tanning. The technology completely eliminates pickling and basification steps through simple proces modification. |
| Note de contenu : |
[Descripteur]Chrome -- Produits de remplacement
[Descripteur]Tannage -- Aspect de l'environnement
Indexation décimale : 675.2 (Préparation du cuir naturel. Tannage) |
| En ligne : |
https://drive.google.com/file/d/1NEYrxyoPntBOF2QugqWIFwNdMjONzufM/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18963 |
in LEATHER INTERNATIONAL > Vol. 214, N° 4824 (09/2012)
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Salt-free chrome tanning in LEATHER INTERNATIONAL, Vol. 214, N° 4824 (09/2012)
