Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
Alternative tanning agent for leather industry from a sustainable source : Dialdehyde starch by periodate oxidation / Cigdem Kilicarislan Ozkan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 3 (03/2021)
[article]
Titre : Alternative tanning agent for leather industry from a sustainable source : Dialdehyde starch by periodate oxidation Type de document : texte imprimé Auteurs : Cigdem Kilicarislan Ozkan, Auteur ; Hasan Ozgunay, Auteur Année de publication : 2021 Article en page(s) : p. 89-99 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage
Amidon dialdéhyde
Amidons -- Oxydation
Caractérisation
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Poids moléculaires
Tannage
Tannage -- Aspect de l'environnementIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Dialdehyde starches with different aldehyde content from native corn starch were prepared by sodium periodate oxidation to be used as a tanning agent in leather making. For this purpose, native corn starch was oxidized with sodium metaperiodate in different molar ratios. After oxidation processes, the yields, solubility in water and aldehyde contents of the obtained dialdehyde starches were determined as well as structure characterizations by Proton Nuclear Magnetic Resonance Spectroscopy, Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography. Evaluating the gel permeation chromatography data, the dialdehyde starch samples which were thought to be in appropriate molecular weight/size to penetrate into skin fibers were selected to be used in the tanning process. Their tanning abilities were evaluated by investigating hydrothermal stabilities, filling and fiber isolation characteristics and physical properties determined by mechanical tests and organoleptically. From the evaluation of the results, it was revealed that sodium metaperiodate oxidized starches which have appropriate molecular weight and adequate aldehyde content has a remarkable tanning effect and can be utilized as a tanning agent with the advantages of not necessitating pickling process which means saving time and simplifying the production but more importantly offering an important advantage from an environmental point of view. Note de contenu : - Characterizations
- Tanning properties of dialdehyde starch samples
- Table 1 : Tanning recipe for the pelt pieces
- Table 2 : Molecular weight distribution of native and oxidized starches
- Table 3 : Tanning properties of oxidized starches
- Table 4 : Physical properties of tanned leathers with oxidized starches
- Table 5 : Organoleptical properties of tanned leathers with oxidized starchesDOI : https://doi.org/10.34314/jalca.v116i3.4249 En ligne : https://drive.google.com/file/d/1Ao7z1sapfoabaz0Uek5C2uMsZkBOMAoh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35436
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVI, N° 3 (03/2021) . - p. 89-99[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 22638 - Périodique Bibliothèque principale Documentaires Disponible Assessment of water management in tanneries / Patrice Monteiro de Aquim in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 6 (11-12/2010)
[article]
Titre : Assessment of water management in tanneries Type de document : texte imprimé Auteurs : Patrice Monteiro de Aquim, Auteur ; Mariliz Gutterres, Auteur ; Jorge Trierweiler, Auteur Année de publication : 2010 Article en page(s) : p. 253-258 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Eaux usées -- Analyse
Gestion des ressources en eau
Tannage
Tannage -- Aspect de l'environnementIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Assessment of water management in tanneries --- This study evaluates the use of water in processing hides into leather. It investigates the environmental impact on water resources of tanneries in Rio Grande do Sul State, evaluating the water demand and concentrations of certain chemicals in the wastewater discharged from the beamhouse, tanning and retanning processes of this industry.
A questionnaire was formulated which was intended to identify water management problems in tanneries, and the possible alternatives available to tanneries aiming at their improvement. A simple and objective application called IRGO (insufficient, regular, good and optimal was developed. The IRGO was applied to 10 tanneries. After completing the questionnaire, the tanneries could check how removed they are from an ideal tannery and ascertain which actions must be taken to improve their performance.
The results showed that there is a large demand for water in the process and little water is re-used. The most conventional liming process employs sulphide, lime and amine and recycling is already applied to this operation in the state. The steps of washing, deliming and the float itself use large quantities of water, although the majority of the tanneries do not use ammonia in deliming. The tanning procedure most used employs chrome III without recycling. In relation to retanning, studies need to be carried out aiming to increase the efficiency of the absorption of chemicals. The wastewater treatment plants are satisfactory due to the requirements of the environmental organizations.En ligne : https://drive.google.com/file/d/1FfVgVeI6OIap-Jj61pjuYIU02rdssLx3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10811
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 94, N° 6 (11-12/2010) . - p. 253-258[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 012670 - Périodique Bibliothèque principale Documentaires Disponible Carbon footprint and toxicity indicators of alternative chromium-free tanning in China / Xiaoying Xu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 5 (05/2015)
[article]
Titre : Carbon footprint and toxicity indicators of alternative chromium-free tanning in China Type de document : texte imprimé Auteurs : Xiaoying Xu, Auteur ; Grau Baquero, Auteur ; Rita Puig, Auteur ; Jiabo Shi, Auteur ; Sang Jun, Auteur ; Wei Lin, Auteur Année de publication : 2015 Article en page(s) : p. 130-137 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bilan des émissions de gaz à effets de serre
Durée de vie (Ingénierie)
Énergie -- Consommation
Environnement -- Etudes d'impact
Tannage -- Aspect de l'environnement
ToxicologieIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : This paper analyzes, from a life cycle perspective, the environmental performance of a newly developed chromium-free tanning process compared to the conventional one, in China. Both processes were evaluated by using carbon footprint, energy consumption and toxicity indicators. Chromium-free tanning process has been found to significantly reduce the considered impact categories compared to conventional tanning. The impact contribution of each process step was calculated, with the tanning step being the major contributor. Results show that the production of chemicals used in the tanning process, have a significant effect on the impacts evaluated. Some of these chemicals have been substituted with similar ones (used as proxies) when no manufacturing-data was available in the databases. Thus, it is important for future and more precise LCA studies to develop databases on the specific chemicals used. This study is a first estimation of the impacts and will help on the decision of expending time and efforts on developing and optimizing the new technology. The results show that it is interesting to use this LCA methodology to environmentally evaluate new research processes and products, before industrial scaling and implementing them, to optimize research time and efforts towards the most environmentally promising products and processes. Note de contenu : - AIM OF THE STUDY
- METHODOLOGY
- INVENTORY DATA AND MODELING : Functional unit and system boundaries - Conventional tanning process model and inventory data - Chromium free tanning process model and inventory data - Chinese electrical power grid mix and thermal energy mix - Wastewater treatment
- RESULTS AND DISCUSSION : Evaluation of the GWP index - Evaluation of the energy consumption - Evaluation of the toxicological impacts to humans and freshwater - Comparative evaluation of tanning stepsEn ligne : https://drive.google.com/file/d/10vyeauNiwsjpJ9kr5HmOz6pgSDeKiJ7c/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24053
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 5 (05/2015) . - p. 130-137[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 17216 - Périodique Bibliothèque principale Documentaires Disponible Carbon footprint of a tanning company / Eylem Kiliç in LEATHER INTERNATIONAL, Vol. 217, N° 4863 (08/2016)
[article]
Titre : Carbon footprint of a tanning company Type de document : texte imprimé Auteurs : Eylem Kiliç, Auteur ; Rita Puig, Auteur ; Gökhan Zengin, Auteur ; Arife Candas Adigüzel Zengin, Auteur Année de publication : 2016 Article en page(s) : p. 20-23 Langues : Anglais (eng) Catégories : Bilan des émissions de gaz à effets de serre
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Cuirs et peaux -- Industrie -- Turquie
Tannage -- Aspect de l'environnementIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Over the past few decades, climate change has evolved into an issue of global concern. The measures taken to reduce greenhouse gas emissions, and the significant and increasing awareness on the environmental impact of the production processes, force leather manufacturers to meet higher environmental standards and improve the sustainability of the leather tanning process.
The leather industry is one of the significant sectors of the Turkish economy in terms of industrial production, employment and export earnings. However, there is a gap in the literature regarding a carbon footprint assessment of the Turkish leather industry. It is important to analyse the leather production processes in order to identify the 'hotspots' and environmental improvements that could transform the constraints into opportunities for improving the environmental performances of Turkish tanneries. Considering these aspects, this study aims to provide basic information, and raise awareness of carbon emissions and energy efficiency in Turkish leather production.Note de contenu : - FIGURES : 1. Turkey's electricity mix - 2. Greenhouse gas emission values for each scope - 3. Contribution of different processes considered in Scope 3 to total carbon footprint - 4. Relative contribution of greenhouse gas emissions from different processes to total carbon footprint of Turkish tannery En ligne : https://drive.google.com/file/d/1W2yVVNtaYZLalZo0FGHQnhkDypgOWphj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26904
in LEATHER INTERNATIONAL > Vol. 217, N° 4863 (08/2016) . - p. 20-23[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18278 - Périodique Bibliothèque principale Documentaires Disponible Combination tanning system based on dialdehyde alginic acid : an ecofriendly organic approach / Gladstone Christopher Jayakumar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 2 (02/2011)
[article]
Titre : Combination tanning system based on dialdehyde alginic acid : an ecofriendly organic approach Type de document : texte imprimé Auteurs : Gladstone Christopher Jayakumar, Auteur ; L. Santana Bala, Auteur ; Swarna Vinodh Kanth, Auteur Année de publication : 2011 Article en page(s) : p. 50-58 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alginique, Acide L'acide alginique et ses dérivés (base conjuguée, sels et esters) les alginates sont des polysaccharides obtenus à partir d'une famille d'algues brunes : les laminaires ou les fucus. - COMPOSITION CHIMIQUE : L'alginate est un polymère formé de deux monomères liés ensemble : le mannuronate ou acide mannuronique dont certains sont acétylés et le guluronate ou acide guluronique.
L'acide alginique permet la production de fibres d'alginates de sodium et de calcium. Les alginates alcalins forment dans l'eau des solutions colloïdales visqueuses. Si l'acide alginique est insoluble dans l'eau, l'alginate de sodium est lui très soluble dans l'eau, et l'alginate de calcium est seulement soluble en milieu basique, notamment en solutions de savon qui sont presque toujours assez alcalines.
Les alginates peuvent former des gels durs et thermostables utilisés comme additifs alimentaires - UTILISATIONS : Les alginates sont utilisés comme épaississants, gélifiants, émulsifiants et stabilisants de produits industriels les plus variés depuis les gelées alimentaires, les produits de beauté, jusqu'aux peintures et aux encres d'imprimerie. L'alginate de propane-1,2-diol (E405), ester de l'acide aliginique, est utilisé, par exemple, pour stabiliser des mousses (vinification, additif de bière, etc.), et est également utilisé dans un procédé de préparation de microcapsules.
Antibactériens
Glutaraldéhyde
Oxazolidine
Sulfate de tétrakis hydroxyméthyl phosphoniumLe sulfate de tétrakis hydroxyméthyl phosphonium est un myxobactéricide qui offre une prévention efficace contre les biofilms microbiens dans les eaux de traitement, et ce, pour une vaste gamme de micro-organismes formant des biofilms. Le sulfate de tétrakis (hydroxyméthyl) phosphonium agit principalement en augmentant la perméabilité de la membrane externe de l'enveloppe de la cellule microbienne, ce qui entraîne la libération rapide de protéines et d'autres substances cellulaires par les cellules. En outre, le sulfate de tétrakis (hydroxyméthyl) phosphonium inhibe le processus de sulfatoréduction dans les bactéries réductrices de sulfate.
Tannage -- Aspect de l'environnement
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-SynthétiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Dialdehyde alginic acid (DAA) is established as an eco-friendly biodegradable tanning agent. In the present study, combination tanning of DAA using glutaraldehyde, oxazolidine and Tetrakis Hydroxymethyl Phosphonium Sulfate (THPS) was evaluated. The combination tanned leathers resulted in better physiochemical properties. Shrinkage temperature about 97°C was obtained for DAA-glutaraldehyde tanning system. The presence of glutaraldehyde, oxazolidine and THPS in combination tanning with DAA resulted in an increase of hydrothermal stability owing to enhanced degree of crosslinking in all the combination tanning systems. The physical strength characteristics and organoleptic properties of combination tanned leathers were enhanced in comparison with DAA tanned leathers. There was no significant change in intensity of color in the combination tanned leathers. The DAA -THPS combination tanning exhibited good light fastness due to the presence of THPS. The DAA combination tanning process also benefits from reduction in total solids (TS) biological oxygen demand (BOD) and chemical oxygen demand (COD) loads from the identified tanning streams. Note de contenu : EXPERIMENTAL : Raw material - Selection of combination system - dialdehyde algiic acid - glutaraldehyde combination tanning - Dialdehyde alginic acid - oxazolidine combination tanning - Dialdehyde alginic acid - THPS combination tanning - Control DAA and chrome tanning process - Determination of shrinkage temperature - Measurement of degree of crosslinking - Physical testing of leather samples - Evaluation of organoleptic properties - Determination of color difference of crust leathers - Analysis of spent tan liquor.
RESULT AND DISCUSSIONS : DAA - Glutaraldehyde combination tanning system - DAA - Oxazolidine combination tanning system - DAA - THPS combination tanning system - Degree of crosslinkng - Effect of strength properties of combination tanned leathers - Effect of surface color on combination tanned leathers - Effect of light fastness on combination tanned leathers - Organoleptic properties assessed by tactile evaluation - Environmental impact.En ligne : https://drive.google.com/file/d/1PR6YZjW6M-3oDri-Peg-9_Y6gzkBhkVZ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11216
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 2 (02/2011) . - p. 50-58[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 012800 - Périodique Bibliothèque principale Documentaires Disponible Contribution à la labellisation "écoproduit" de cuirs tannés aux sels de chrome : Etude de la mobilité du chrome / Richard Martinetti / 1994
PermalinkLe Cuir à la une... / Bayer / Leverkusen [Allemagne] : Bayer (n.d.)
PermalinkLe cuir de chevreau en circuit court de Billy Tannery / Hélène Borderie in LEATHER FASHION DESIGN (LFD), N° 5 (02/2020)
PermalinkPermalinkEcotoxicological diagnosis in the tanning industry / Mwinyikione Mwinyihija / New York [United States] : Springer (2010)
PermalinkEnhanced clarification of tannery wastewater / Bruce. M. Poole in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XXVII (Année 1982)
PermalinkEnvironmental Developments and researches in brazilian leather sector / Miriam Cooper in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 6 (11-12/2011)
PermalinkInescop is among the best in Europe / INESCOP in INDUSTRIE DU CUIR (IDC), N° 2013/04 (07-08-09/2013)
PermalinkA long way from chrome / Ross Davies in LEATHER INTERNATIONAL, Vol. 220, N° 4885 (10/2018)
PermalinkManaging chrome in leather manufacture / Jürgen Christner in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 12 (12/2012)
PermalinkPermalinkPreferential treatment / Dirick von Behr in LEATHER INTERNATIONAL, Vol. 220, N° 4886 (11-12/2018)
PermalinkProcter memorial lecture 2008. The ecological tannage - Challenges and progress / Heinz-Peter Germann in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 6 (11-12/2008)
PermalinkRelease of chrome in chrome tanning and post tanning process / Zhou Jian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 4 (07-08/2012)
PermalinkRiver sediment testing in a former tanning area / Institute for Creative Leather Technologies (University of Northampton, Northampton, United Kingdom) in LEATHER INTERNATIONAL, Vol. 215, N° 4828 (03/2013)
Permalink