[article]
| Titre : |
An enzymatic beamhouse process coupled with semi-metal tanning and eco-benign post tanning leads to cleaner leather production |
| Type de document : |
texte imprimé |
| Auteurs : |
Subramani Saravanabhavan, Auteur ; Balachandran Unni Nair, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Palanisamy Thanikaivelan, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 174-186 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Leather industry in the world is presently undergoing radical transformation due to environmental pollution and discharge statutes. Hence, the industry is stressed to search for cleaner leather processing. Present leatherprocessing methodologies are known to contribute higher pollution loads. This method of tanning process comprises 'do-undo' logic. In addition, the conventional methods followed in leather processing subject the collagen matrix to wide variation in pH (2.8 - 13.0). This is evidenced from the emission of huge amount of pollution loads such as bio-chemical oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids (TDS), total solids (TS), sulfates, chlorides and chromium. In the study illustrated here, the hair and flesh removal as well as fiber opening have been achieved using bio-products at pH 8.0, pickle free semi-metal tanning employing aluminium, vegetable tannins and silica followed by post-tanning using environmental benign chemicals. Hence, eco-benign chemicals have been used throughout the leather processing. It has been observed that the extent of hair removal and opening up of fiber bundles are comparable to that of conventionally processed leathers. This has been demonstrated through scanning electron microscopy (SEM) and softness measurements. The shrinkage temperature of the experimental leathers obtained from this combination tanning system is about 100°C. Performance of the leathers is shown to be on par with conventionally chrome-tanned leathers through physical strength and hand evaluation. The developed process also exhibits significant reduction in BOD, COD, TDS and TS loads by 46, 33, 91, and 92%, respectively. Further, the developed process appears to be economically viable. |
| En ligne : |
https://drive.google.com/file/d/1C3W77yjX6Y9IzNX6AsVESIapVLntwBAh/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4065 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 5 (05/2005) . - p. 174-186
[article]
|
Aller sur edunet
Accueil
An enzymatic beamhouse process coupled with semi-metal tanning and eco-benign post tanning leads to cleaner leather production in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 5 (05/2005)
