| Titre : |
Using ashes from incineration of chromium sulphate tanned leather scrap. Part 2 : Tanning liquors, additives in footwear adhesives and fillers in mortars |
| Type de document : |
texte imprimé |
| Auteurs : |
M. J. Ferreira, Auteur ; E. Xara, Auteur ; M. F. Almeida, Auteur ; M. Barla, Auteur ; J. Ferrer, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 193-198 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Adhésifs -- Additifs
Caractérisation
Cendres
Charges (matériaux)
Chrome
Cuirs et peaux -- Déchets -- Recyclage
Mortier -- Additifs
Récupération (Déchets, etc.)
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Chromium is the basis of leather manufacture and its extractable reserves are limited in distribution.
mainly in South Africa. Zimbabwe and ex-USSR countries. Almost 20% of the metal is used by the chemical industry where one third of it goes into leather production as chromium sulphate tanning agent.
The European Union depends on chromium imports as for most other metals.
After burning leather scrap tanned with chromium sulphate. the very rich chromium resulting ashes may contain chromium (VI) in such a concentration that it becomes a hazardous waste and needs careful
handling. 23Thus. both economic and environmental reasons suggest the use of these ashes.
This paper follows another 4in presenting some of the work carried out under CRAFT project BRST CT96-5085. where leather incineration ashes generated by two different pilot—combustion systems, respect ively a fixed grill incinerator (FGI) and a fluidized bed incinerator (FBI) were characterized and some alternatives for using those ashes were studied. In the previous paper two routes for recovering chromium from leather ashes were considered as well as the influence of some factors on their efficiency. Now, producing chromium sulphate tanning liquors with chromium leached from the ashes is considered, as well as some other alternatives of using those ashes, namely as additives in footwear adhesives and fillers in mortars. |
| Note de contenu : |
- Characterization of ashes
- Application of recovered chromium in the leather industry as tanning agent
- Application of ashes in footwear adhesives
- Application of ashes as a filler in mortars
- Table 1 : Chemical characteristics of leathers tanned using a 50/50 mixture of commercial and FBI ash derived liquor
- Table 2 : Physical characteristics of leathers tanned using a 50/50 mixture of commercial and FBI ash derived liquor
- Table 3 : Characteristics of leathers tanned using a 50/50 mixture of commercial and FGl ash derived liquor
- Table 4 : Characteristics of leathers tanned using a 75/75 mixture of commercial and FGI ash derived liquor
- Table 5 : Type of failure of leather adhesive bonding
- Table 6 : Heavy metals in the leachates from ashes and mortars DIN 38414-S-4 tests and Photobacterinin Phosphoreum toxicity |
| En ligne : |
https://drive.google.com/file/d/1g9VcBCydqP4pVFRkAKVhOvYQeHtRAxJg/view?usp=drive [...] |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40213 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 85, N° 6 (11-12/2001) . - p. 193-198
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Using ashes from incineration of chromium sulphate tanned leather scrap. Part 2 : Tanning liquors, additives in footwear adhesives and fillers in mortars in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 85, N° 6 (11-12/2001)
