Development of an integrated wet finishing process : manufacture of farment leathers / T. Ayyasamy in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 9 (09/2004)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIX, N° 9 (09/2004) . - p. 367-375 Titre : Development of an integrated wet finishing process : manufacture of farment leathers Type de document : texte imprimé Auteurs : T. Ayyasamy, Auteur Année de publication : 2004 Article en page(s) : p. 367-375 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In recent years, tanners have been showing interest in adopting several clean technologies due to increasing public pressure against the tanning activity because of the environmental damage. Tanning activity also engaged in huge consumption of water, power, chemicals and labor. A compact wet finishing process has been developed for making garment leathers. The process provides leathers having comparable or even better physical and bulk properties to that derived from conventional wet finishing process. Especially, color and softness of the processed leathers are much improved, which are substantiated through reflectance, color, and softness measurements. This has been attributed to the improved uptake of dyes, fatliquors and chromium through an integrated wet finishing process. This is also supported by the reduced pollution loads such as COD, TS and chromium loads redueced by 23, 30 and 50%, respectively. Importantly, the water consumption is reduced by 73% for processing 1 metric ton of wet blue shaved leathers, which is one of the pioneering achievements. Techno-economic viability study indicates that the integrated process is commercially viable. En ligne : https://drive.google.com/file/d/1x3DM-_TZeGrt_4HM7NLMQVNuhnYZxo5H/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4219 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
001606	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The development of an integrated rechroming-neutralization-post tanning proces manufacture of upper leathers from goatskins / T. Ayyasamy in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 2 (03-04/2005)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 2 (03-04/2005) . - p. 71-79 Titre : The development of an integrated rechroming-neutralization-post tanning proces manufacture of upper leathers from goatskins Type de document : texte imprimé Auteurs : T. Ayyasamy, Auteur ; Palanisamy Thanikaivelan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur Année de publication : 2005 Article en page(s) : p. 71-79 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux de chèvres Déchets -- Réduction Industrie -- Pollution -- Lutte contre Neutralisation (chimie) Post-tannage Rechromage Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this study, an integrated rechroming cum neutralisation and post tanning process has been designed to combat the pollution caused by tanning as well as to save resources. Studies on the integration of rechroming and neutralisation reveal that there is no physical deposition of chromium on the leathers at the selected chromium sulphate offer and pH. The process, especially when used for uppers, produces leathers which possess comparable strength and bulk properties to leathers from a conventional multi-step wet finishing process. In particular, the colour and fullness of the leathers are improved. The developed process leads to significant reduction in pollution loads, COD, TS and chromium loads are reduced by 28%, 34% and 72%, respectively. The quantity of water required is reduced to 5 l/Kg as against 18 l/Kg for processing shaved wet blue goat leathers. The process is shown to be techno-economically feasible. Note de contenu : - EXPERIMENTAL METHODS : Control wet finishing process - Integrated wet finishing process - RESULTS AND DISCUSSION : Integrated rechroming-neutralisation-post tanning process - Table 1 : Chromium uptake and content in the liquor and leather for varying offer of BCS during rechroming cum neutralisation at a pH of 6 - Table 2 : Visual assessment of the leathers after rechroming cum neutralisation at a pH of 6 - Table 3 : Organoleptic properties of control and experimental crust leathers - Table 4 : Colour measurement values of control and experimental crust leathers - Table 5 : Strength characteristics of leathers from integrated (E) and conventional (C) wet finishing processes - Table 6 : Analysis of composite liquor from integrated (E) and conventional (C) wet finishing processes - Table 7 : Comparison of water consumption and discharge for control (C) and experimental (E) wet finishing of 1 kg shaved wet blue - Table 8 : Power consumption for control (C) and experimental (E) wet finishing En ligne : https://drive.google.com/file/d/1YlbnoGPAZnnZqI2OUpNxkrfONA168ITb/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39597 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

---

1 (1 - 2 / 2)