[article]
| Titre : |
Direct chrome liquor recycling under indian conditions : Part 1. Role of chromium species on the quality of the leather |
| Type de document : |
texte imprimé |
| Auteurs : |
Kalarical Janardhanan Sreeram, Auteur ; T. Ramasami, Auteur ; Balachandran Unni Nair, Auteur ; Chandra Babu Narasimhan Kannan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; R. Ramesh, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 233-242 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The direct recycling of chrome liquor in pickle or tanning bath is gaining importance in the management of chromium and total dissolved solids in tanneries. Earlier studies indicate that the pre-acidification of the chrome liquor avoids surface fixation of chromium, thereby resulting in quality leathers. This assumes significance as it alters the charge and species-wise composition of the chrome liquor. In this study, the influence of pre-acidification pH on the nature of chromium (III) species and the resulting affect on the quality of leathers has been investigated The results obtained in this study indicate that a pre-acidification of spent chrome liquor to a pH of 1.0 results in the formation of larger percentage of lower charged species, thereby avoiding the surface fixation of chromium. The organoleptic properties, chromium distribution, and SEM analysis of the leathers processed using direct recycling methodology after pre-acidification of the spent chrome liquor to pH 1.0 indicates that the quality of leathers is not impaired. There is no significant influence of the pre-acidification pH on the pollution load. |
| En ligne : |
https://drive.google.com/file/d/1J-Rnt9HMf407aWjtQ-HKnQqeRA73qMDH/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4063 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 6 (06/2005) . - p. 233-242
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Direct chrome liquor recycling under indian conditions : Part 1. Role of chromium species on the quality of the leather in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 6 (06/2005)
