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Sodium chloride substitute for lower salt goat skin preservation : a novel approach / Abul Hashem in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 8 (08/2017)
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Titre : Sodium chloride substitute for lower salt goat skin preservation : a novel approach Type de document : texte imprimé Auteurs : Abul Hashem, Auteur ; Navid Arman, Auteur ; Hasibur Rahman Sheikh, Auteur ; Mazharul Islam, Auteur Année de publication : 2017 Article en page(s) : p. 270-276 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure de sodium -- Suppression ou remplacement
Cuirs et peaux -- Conservation
Cuirs et peaux de chèvres
Industrie -- Pollution -- Lutte contreIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Animal skin is the basic raw materials for the tanning industry, which is the by-product of meat industry. The degradation of skin starts within several hours after the death of animal if it is left untreated. Application of common salt (sodium chloride, NaCl) is the most popular preservation method of skin; it preserves the skin by its dehydrating ability and bacteriostatic effect. The negative effect of sodium chloride is that it generates a huge amount of pollution in the form of total dissolved solids (TDS) during leather processing. In this present study, an investigation was made to preserve goat skin using plant leaf paste. The preservation process was evaluated by monitoring different parameters e.g., shrinkage temperature, hair slip, putrefaction, odor, moisture content, extractable nitrogen, and bacterial count in comparison to the conventional wet salting method. Results indicate that the leaf paste could be used as curing agents to preserve goat skin. Combination of 10% leaf paste + 10% NaCl could preserve the goat skin for a period of 30 days. In this less-salt preservation method, pollution load was reduced e.g., chlorides and TDS in soaking operation by 45.2% and 49.8%, respectively. Note de contenu : - EXPERIMENTAL : Materials - Chemicals - Experimental systems for preservation
- MONITORING THE PRESERVATION METHOD : Determination of moisture content - Determination of extractable nitrogen - Determination of bacterial count - Hydrothermal stability determination - Leather processing - Pollution load generated during leather making - Physical strength of leather - Scanning electron microscope (SEM)
- RESULTS AND DISCUSSION : Optimization of leaf paste
- EFFECTIVENESS OF THE PRESERVATION METHOD : Total extractable nitrogen - Bacterial count - Moisture content - Hydrothermal stability - Pollution load in soaking operation - Physical properties of leather - SEM analysisEn ligne : https://drive.google.com/file/d/1FbbCw1sxUhsB3nTifRH_udat-hBr-RCU/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28826
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 8 (08/2017) . - p. 270-276[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19156 - Périodique Bibliothèque principale Documentaires Disponible Tenerias Omega on embracing olivenleder tanning : A sustainable leather revolution in INTERNATIONAL LEATHER MAKER (ILM), N° 62 (11-12/2023)
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Titre : Tenerias Omega on embracing olivenleder tanning : A sustainable leather revolution Type de document : texte imprimé Année de publication : 2023 Article en page(s) : p. 24-25 Langues : Anglais (eng) Catégories : Chimie écologique
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eau -- Consommation -- Réduction
Economies d'énergie
Gaz à effet de serre -- Réduction
Industrie -- Pollution -- Lutte contre
Olivier et constituants
Tannage végétalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Tenerias Omega, a prominent name in the leather industry, has recently made waves by adopting Olivenleder® tanning, an innovative sustainaale method utilising olive leaf extract from wet-green. Today, we have the privilege of speaking with Tenerias Omega to delve into their journey, motivation, and the transformative impact of Olivenleder tanning on their tannery. En ligne : https://drive.google.com/file/d/1M1XphmU53th5fB54yW54CuK-pGTqLCtb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40205
in INTERNATIONAL LEATHER MAKER (ILM) > N° 62 (11-12/2023) . - p. 24-25[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24298 - 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)
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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
RechromageIndex. 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 finishingEn ligne : https://drive.google.com/file/d/1YlbnoGPAZnnZqI2OUpNxkrfONA168ITb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39597
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 2 (03-04/2005) . - p. 71-79[article]
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Titre : The lighter side of leathermaking Type de document : texte imprimé Année de publication : 2020 Article en page(s) : p. 28-31 Langues : Anglais (eng) Catégories : Chaine logistique
Chlorure de sodium -- Suppression ou remplacement
Cuirs et peaux -- Conservation
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Industrie -- Pollution -- Lutte contre
Innovations
MaroquinerieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : With ambitions to become the go-to sustainable technology for tanners, Litehide offers a number of benefits to reduce the environmental footprint of the leathermaking process by eliminating the use of salt in hide preservation completely. The author propose to find out about their experience and close cooperation. Note de contenu : - Supply chain integration
- Process innovation
- Figure : Dehydrated litehide resembles a piece of parchment and is almost as lightEn ligne : https://drive.google.com/file/d/1G1R9lYjYLmmuCICGb3iaI3eRbYjiQcsT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34086
in INTERNATIONAL LEATHER MAKER (ILM) > N° 41 (05-06/2020) . - p. 28-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21717 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : The sulphide challenge Type de document : texte imprimé Auteurs : Jens Fennen, Auteur ; Daniel Herta, Auteur ; Jan-Tiest Pelckmans, Auteur ; Jürgen Christner, Auteur Année de publication : 2013 Article en page(s) : p. 25-27 Langues : Anglais (eng) Catégories : Atmosphère -- Pollution
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Industrie -- Pollution -- Lutte contre
Odeurs -- Lutte contre
Sulfure d'hydrogène
Sulfures
Travail de rivière (cuir)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Tanneries are often associated with the characteristic and obnoxious "sulfide smell", which is in fact caused by low concentrations of sulfhydric gas, also known as hydrogen sulfide. Levels as low as 0.2 ppm of H2S are already unpleasant for humans and a concentration of 20 ppm is unbearable. As a result, tanneries might be forced to close down beamhouse operations or are forced to re-locate away from populated areas.
As beamhouse and tanning are often done in the same facility, smell is actually the lesser problem. Through human errors, this always holds the danger of mixing acidic floats with the sulfide containing beamhouse float and releasing higher amounts of H2S. At a level of 500 ppm all olfactory receptors are blocked and the gas, therefore, becomes unnoticeable and an exposure for 30 min results in a life threatening intoxication. At a concentration of 5,000 ppm (0.5%), the toxicity is so pronounced that a single breath is enough to cause immediate death within seconds.
Despite all these problems and risks, sulphide has been the preferred chemical for unhairing for more than a century. This can be attributed to unavailable workable alternatives: the use of organic sulphides has shown to be practicable but not really accepted due to the extra costs involved. Unhairing solely by proteolytic and keratolytic enzymes has been tried over and over again but for the lack of selectiveness was difficult in practice to control. A lot of work has also been invested in oxidative unhairing, but until today it is very limited in its use as it is hard to get consistent results.Note de contenu : - The unhairing process
- Soaking is a key factor for efficient unhairing
- Low sulphide enzymatic assisted unhairing
- A low sulphide, low time hair safe processEn ligne : https://drive.google.com/file/d/1LagW96JfoonNNG_1joIQYOLE8LsGPvj2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20450
in LEATHER INTERNATIONAL > Vol. 215, N° 4836 (11-12/2013) . - p. 25-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15842 - Périodique Bibliothèque principale Documentaires Disponible 15880 - Périodique Bibliothèque principale Documentaires Disponible The thermal and non-thermal effects of microwave in the chrome tanning process / Jinwei Zhang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 2 (03-04/2020)
PermalinkVers une production éco-responsable / Fanny Perrin d'Arloz in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 941 (09/2017)
PermalinkVers le rejet zéro : étude technico-économique / Bertrand Sancey in GALVANO ORGANO, N° 832 (10/2014)
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