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Alternative fungicides for the leather industry : application in various processes / Sara Cuadros in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 6 (11-12/2012)
[article]
Titre : Alternative fungicides for the leather industry : application in various processes Type de document : texte imprimé Auteurs : Sara Cuadros, Auteur ; M. Angels Manresa, Auteur ; Joaquim Font, Auteur ; M. Elena Bautista, Auteur ; Rita Puig, Auteur ; Agusti Marsal, Auteur Année de publication : 2012 Article en page(s) : p. 225-233 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Concentration minimale inhibitrice (antimicrobiens) En microbiologie, la concentration minimale inhibitrice (CMI) est la plus faible concentration d'un produit chimique, généralement un médicament, qui empêche la croissance visible d'une ou de plusieurs bactéries. La CMI dépend du micro-organisme considéré, de l'être humain affecté (in vivo uniquement) et de l'antibiotique lui-même.
La CMI est déterminée en préparant des solutions du produit chimique in vitro à diverses concentrations croissantes, en incubant les solutions avec des groupes séparés de bactéries en culture et en mesurant les résultats en utilisant une méthode de dilution standardisée (agar ou microdilution). Les résultats se classent ensuite comme "sensible", "intermédiaire" ou "résistant" à un antimicrobien particulier en utilisant un point d'arrêt. Les points d'arrêt sont des valeurs convenues, publiées dans les directives d'un organisme de référence, comme le US Clinical and Laboratory Standards Institute (CLSI), la British Society for Antimicrobial Chemotherapy (BSAC) ou le Comité européen sur les tests de sensibilité aux antimicrobiens (EUCAST). On a pu constater des écarts importants au niveau des points d'arrêt de divers pays européens au fil des ans, et entre ceux de l'EUCAST et du CLSI.
Alors que la CMI est la concentration la plus faible d'un agent antibactérien nécessaire pour inhiber la croissance visible, la concentration bactéricide minimale (CBM) est la concentration minimale d'un agent antibactérien qui entraîne la mort bactérienne. Plus la CMI est proche de la CBM, plus le composé est bactéricide.
La première étape de la découverte d'un médicament est souvent le dépistage d'un médicament candidat de banque de données pour les CMI contre les bactéries d'intérêt. En tant que tels, les CMI sont généralement le point de départ pour de plus grandes évaluations précliniques de nouveaux agents antimicrobiens. Le but de la mesure de la concentration minimale inhibitrice est de s'assurer que les antibiotiques sont choisis efficacement pour augmenter le succès du traitement. (Wikipedia)
Cuirs et peaux -- Conservation
Fongicides -- Suppression ou remplacement
Produits de nourriture du cuir
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Increasingly stringent environmental legislation and indispensable use of fungicides in the tanning industry obliges tanners to adapt their processes to alternative technologies with lower environmental impact, including the search for new fungicide systems that comply with those rules.
The fungicidal capacities of alternative compounds diiodomethyl p-tolylsulfone (DIMPTS), 3-iodo-2-propynyl N-butylcarbamate (IPBC) and thiabendazole/2-Thiazol-4-yl-1H-benzo imidazole (TBZ) were compared to those of conventional fungicides, 2-(thiocyanomethylthio)-1,3-benzothiazole (TCMTB) and the mixture of phenolic compounds). This fungicidal capacity was evaluated against different strains of fungi in different processes. Fungicides were applied in the chrome tanning process, fatliquoring of hides tanned with vegetable extracts and a preservative pickling process. Further studies consisted of a microbiological control samples inoculated with fungi common in tannery, determination of the fungicide content on the skin, and a toxicity study of process wastewater.
The results obtained in an earlier work and the higher antifungal capacity of DIMPTS and IPBC in the different processes, supported the possibility of using them in the leather sector.
The skins produced using alternative fungicides showed no stains or other defects, and in relation to the environmental impact, toxicity from wastewater was lower in the case of the alternative products against those commonly used.Note de contenu : - AIM OF THE WORK
- EXPERIMENTAL PROCEDURES : Materials - Isolation and identification of fungi from contaminated hides - Determinationof Minimum Inhibitory Concentration (MIC) - Application of fungicides in three processes : wet-blue tanning process, fatliquoring process of vegetable leather and preservative pickling process
- RESULTS AND DISCUSSION : Determination of Minimum Inhibitory Concentration (MICs) - Application of fungicides in three processes : wet-blue tanning process, fatliquoring process of vegetable leather and preservative pickling processEn ligne : https://drive.google.com/file/d/1vShF6OyeAyqp8_1jJDtCls2wXVIElndH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16801
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 6 (11-12/2012) . - p. 225-233[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14414 - Périodique Bibliothèque principale Documentaires Disponible Alternative materials to leather update 2022 / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 55 (09-10/2022)
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Titre : Alternative materials to leather update 2022 Type de document : texte imprimé Auteurs : Karl Flowers, Auteur Année de publication : 2022 Article en page(s) : p. 64-70 Langues : Anglais (eng) Catégories : Composites
Cuir reconstitué
Enduction textile
Textiles et tissus
Tissés
TricotTags : Cuir 'Matériaux alternatifs' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the past, ILM has written about the latest alternative materials that were beginning to circulate with brands and manufacturers (Flowers, 2018). A myriad of new materials has flooded onto the market and early data suggests that, instead of them disrupting the leather market, they have in fact started impacting the 3.1 trillion sq m synthetic material market. In trying to copy leather, the leather alternative companies find that their consumers seem to identify with their materials more as synthetic materials, rather than genuine leather alternatives.
Litre the altemative-to-meat market, the alternative materials just simply cannot seem to impress the final consumer and, as a result, their performance are stinging investors who cannot seem to draw out a dividend of these start-up companies due to falling share values and poor cash flows.
The materials can be broadly categorised as follows :
- Reconstituted leather composites
- Materials that are woven, knitted or composited (with a coating, as the coating or without a coating)
- Grown sheets (or grown and re-composited).
The history of these materials goes back to the middle of the last century when materials were cast, calendared (formed between two rollers) or coated onto a textile underlay. The early materials were based on polyvinyl chloride and were usually coated onto a woven textile backing (for strength). Early materials were not breathable and were replaced in some instances with poromeric materials (materials that had deliberate pores impregnated into the structure).
The use of leather fibre wastes was also inevitably going to see beneficiation into fabricated sheets that were bonded together to resemble genuine leathers. Coated, laminated and heavily finished leathers also meant that tanners could move low-grade materials through their factory. Foils, laminates and corrected grain finishes produced a range of synthetic-looking materials that blurred what the consumer could discern as leather or not.Note de contenu : - Reconstituted leather fibres
- Woven/knitted/composites/coated textiles
- Woven/knitted
- Compositing
- Misleading ingredient composition
- Gown sheets (or grown and re-composited)En ligne : https://drive.google.com/file/d/1genlk30WeHpT4cc-zaGmFyeAuQu5odlg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38117
in INTERNATIONAL LEATHER MAKER (ILM) > N° 55 (09-10/2022) . - p. 64-70[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23578 - Périodique Bibliothèque principale Documentaires Disponible Alternative process for recovery of chrome(III)-effluents / Jaime Cot in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 4 (07-08/2008)
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Titre : Alternative process for recovery of chrome(III)-effluents Type de document : texte imprimé Auteurs : Jaime Cot, Auteur ; Agusti Marsal, Auteur ; Albert M. Manich, Auteur ; Pedro J. Celma, Auteur ; F. Fernandez, Auteur ; J. Cot-Gores, Auteur Année de publication : 2008 Article en page(s) : p. 139-149 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bisulfite de sodium
Eaux usées -- Epuration
Eaux usées -- Teneur en chrome
Fluidisation
Glucose
Gommes et résines
Oxydoréduction
Peroxyde d'hydrogèneLe peroxyde d'hydrogène (H2O2), communément appelé eau oxygénée ou encore perhydrol (appellation industrielle), est un composé chimique liquide et visqueux, aux puissantes propriétés oxydantes (il est aussi réducteur). C'est donc un agent blanchissant efficace qui sert de désinfectant et (à haute concentration) d'oxydant ou monergol dans les fusées spatiales.
Récupération (Déchets, etc.)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This scheme aims to set up an alternative process to recover chrome(III) from tannery effluents. The use of the conventional technique of alkaline precipitation (magnesium oxide) of chromium(III) is well known from the literature and is in daily practice in tanneries worldwide. This technique may in fact represent the cheapest treatment nowadays; however, the latest economic studies have revealed the influence of parameters that could significantly alter investment costs and thus open a door to alternative processes. The main problems that the precipitation technique carries with it are :
- a) the presence of highly masked chrome(III) complexes, difficult to precipitate even in alkaline medium.
- b) the speed of precipitation and the density of the precipitate can be a major problem. Sometimes, the application of heat is required.
- c) filtration of the precipitate and subsequent drying to remove possibly 30% of the water content of the chromecake (various techniques are used).
- d) recovered chrome(III) obtained by re-dissolving the cake with sulphuric acid and final adjustment to 33°Sch basicity can occlude large amounts of highly masked chrome (III) complexes which, in turn, produce uneven dyed grain surfaces ; limiting dyeing to dark shades.
Furthermore, basic factors such as energy consumption, the lengthy nature of the overall process, the simple but numerous stages, and limited coverage of fashion colours indicate that an alternative process is possible.
This part of the work aims to recover the chromium1 of wastewater coming from the various chrome using processes and, at the same time, to get an effluent that can be used directly without complementary treatments. It is important to give a clearer and detailed idea of the developed process.Note de contenu : - INTRODUCTION : Resin selection - Wastewater oxidation process - Wastewater loading - Chromium reduction process
- EXPERIMENTAL PROCEDURE : Equipment and reagents used - Resin Amberlite IRA-96 - Sample preparation - Wastewater load and reduction - Fluidisation system - Fluidisation mechanism (see appendix for symbols) - Calculation off luidisation for the pilot plant - Reduction in a batch system
- Table 1 : Amberlite IRA-96 resin characteristics
- Table 2 : Optimal operation conditions
- Table 3 : Chromium recovered using acid hydrogen peroxide as reducer
- Table 4 : Chromium recovered using sodium bisulphite as reducer
- Table 5 : Chromium recovered using glucose as reducerEn ligne : https://drive.google.com/file/d/1k7CnOQf4zEsbildKyaGXxsI_elC93m2i/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38963
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 4 (07-08/2008) . - p. 139-149[article]Alternative solutions for fungal protection of packaged wet blue / George Stockman in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 12 (12/2006)
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Titre : Alternative solutions for fungal protection of packaged wet blue Type de document : texte imprimé Auteurs : George Stockman, Auteur ; Ravindran Rangarajan, Auteur ; Dean Didato, Auteur Année de publication : 2006 Article en page(s) : p. 461-466 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Every year, fungal growth on wet blue causes significant, costly damage measured as rework and downgrading of the resulting leather. Even the best mold control programs are prone to failure now and again. The reasons are varied and range from the programmed decomposition of fungicides in the wet blue to environmental exposure to the occurrence of mold species that could not be anticipated during fungicide selection. Tanners are always on the lookout for a novel antifungal substance that can be applied after palletizing, immediately prior to packaging of the wet blue. Such a post-process spray would provide just ehough added protection to minimize damage during extended shipment and storage intervals. Several synthetic fungicides have shown to be effective in this role, but their toxicity profiles preclude their being applied to the palletized wet blue by spray application. A group of low risk, environmentally benign substances has shown significant antifungal properties when applied to wet blue. The extracts of select naturally occurring plants have been tested for efficacy against commonly encountered molds. These compounds can be applied to the substrate with other commonly available organics by spray application, while presenting minimal risk to the user or the environment. This new family of leather fungicides can be used as part of an integrated system of wet blue fungal protection. As such, they will complement the existing wet blue fungicide programs to help extend storage intervals. En ligne : https://drive.google.com/file/d/1Ra-BluONF5r94OWyBUbuzRtkKkSA7AjP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3855
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Code-barres Cote Support Localisation Section Disponibilité 005986 - Périodique Bibliothèque principale Documentaires Disponible Alternative technologies for adding value to bovine hair waste / B. C. Galarza in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 1 (01-02/2010)
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Titre : Alternative technologies for adding value to bovine hair waste Type de document : texte imprimé Auteurs : B. C. Galarza, Auteur ; I. Cavello, Auteur ; C. A. Greco, Auteur ; R. Hours, Auteur ; M. M. Schuldt, Auteur ; Carlos S. Cantera, Auteur Année de publication : 2010 Article en page(s) : p. 26-32 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Cuir Peau Epilage Valorisation Perte Poils bovin Caractéristiques morphologiques structurales chimiques Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Considerations on the immunization phenomenon.
Morphological, structural and chemical characteristics of hair.
The effects on hair-saving unhairing on hair.
En ligne : https://drive.google.com/file/d/1JF7Ez_PSrrzCx5Y7meGp4F2p59SCIje4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8308
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Code-barres Cote Support Localisation Section Disponibilité 011957 - Périodique Bibliothèque principale Documentaires Disponible Alternative treatments for footwear industry liquid effluents - Part 1 - Classical approach in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 3 (05-06/2002)
PermalinkAlternative treatments for footwear industry liquid effluents - Part 2 - Pressure wet oxygen oxidation / M. J. Ferreira in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 3 (05-06/2002)
PermalinkAlternative treatments for footwear industry liquid effluents - Part 3 - Pressure wet hydrogen peroxide / M. J. Ferreira in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 4 (07-08/2002)
PermalinkAlternative uses for tannery wastes : a review of environmental, sustainability, and science / Cesar Vinicius Toniciolli Rigueto in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
PermalinkAlternative utilization of skin wastes-preparation of a fe(III)-loaded adsorbent for anionic dyes in aqueous solution / Yu-Lu Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 5 (09-10/2006)
PermalinkAlternatives to chromium tanning - Part III : effect of organic acid anions on aluminium sulphate tannage of collagen / K. C. Montgomery in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
PermalinkAlternatives to chromium tanning - Part IV : the stability of aluminium and other tannages in acidic solutions / K. C. Montgomery in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
PermalinkAlum and the leather industry / Roy Thomson in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 4 (07-08/2009)
PermalinkAlum-based hide processing / Raymond A. Smith in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIX (Année 1984)
PermalinkPermalinkPermalinkPermalinkL'amélioration de la qualité des peaux, un enjeu majeur pour la filière cuir / René Liauzon in CTC ENTREPRISES, (07-08/2010)
PermalinkPermalinkPermalinkAménagement d'un poste de travail en mégisserie / Jérôme Darragon in CTC ENTREPRISES, N° 5 (06/2007)
PermalinkAmino acid analysis by low pressure ion chromatography with conductivity detection / Hong Dai in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 5 (09-10/2004)
PermalinkAmino acid composition of fur after degradation : Changes in amino acid composition of fur after artificial degradation treatments / T. Imai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 5 (05/1994)
PermalinkAmino resins for leather / Samir Das Gupta in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 63, N° 3 (05-06/1979)
PermalinkAmmonia nitrogen in tannery wastewater : distribution, origin and prevention / Yanan Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 2 (02/2012)
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