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Adsorptive removal of As(V) from aqueous solution by Zr(IV)-loaded skin shavings / Jiao Limin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 9 (09/2009)
[article]
Titre : Adsorptive removal of As(V) from aqueous solution by Zr(IV)-loaded skin shavings Type de document : texte imprimé Auteurs : Jiao Limin, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2009 Article en page(s) : p. 308-315 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorbants et adsorbants
Arsenic
Cuirs et peaux -- Déchets
Cuirs et peaux de porcs
Déchets -- Elimination
Isotherme d'adsorption
Solutions aqueuses (chimie)
Wet-white (tannage)
ZirconiumIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Wet-white shavings are one of the main solid wastes produced in the leather industry. In this paper, Zirconium (IV)-loaded adsorbent (ZrLA) was prepared by using wet-white shavings as the supporting matrix. The fundamental adsorption behaviors of this new adsorbent for arsenic [As(V)] were investigated. It was found that the adsorption capacity of ZrLA for As(V) in aqueous solution was 60.90 mg-g-1, when the initial concentration of As(V) was 75.0 mg. L-1 at pH 4.0 and the dosage of ZrLA was 1.0 g.L-1. The initial pH of As(V) solution significantly affected adsorption capacity of ZrLA to As(V) and the optimal pH for adsorption was in the range of 3.0-6.0. The adsorption isotherms of As(V) could be well fitted by the Langmuir equation, and the maximum adsorption capacities calculated by the Langmuir equation were close to those determined by experiments. The adsorption kinetics of As(V) on ZrLA could be satisfactorily described by the pseudo-second-order rate model. The adsorption capacity was increased with the increase of the zirconium content in ZrLA, and the highest adsorption capacity was obtained when zirconium content of ZrLA was 90-110 mg.g-1. Note de contenu : - EXPERIMENTAL METHODS : Materials - Preparation of Zr(IV)-loaded absorbent based on wet-white shavings - Preparation of As(V) stock solution - Effect of initial pH on adsorption capacity of ZrLA to As(V) - Adsorption isotherms - Effect of zirconium content in ZrLA on adsorption capacity - Adsorption kinetics
- RESULTS AND DISCUSSION : Effect of initial pH on adsorption capacity of ZrLA to As(V) - Adsorption isotherm - Effect of the zirconium content in ZrLA on As(V) adsorption - Adsorption kineticsEn ligne : https://drive.google.com/file/d/1UEbM9mmPakXpBVSI8vBe0FL-y0wo2W29/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17835
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 9 (09/2009) . - p. 308-315[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011556 - Périodique Bibliothèque principale Documentaires Disponible 011557 - Périodique Bibliothèque principale Documentaires Disponible Alternative 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)
[article]
Titre : Alternative utilization of skin wastes-preparation of a fe(III)-loaded adsorbent for anionic dyes in aqueous solution Type de document : texte imprimé Auteurs : Yu-Lu Wang, Auteur ; Liao Xue-Pin, Auteur ; Ying-Chun Gu, Auteur ; Shi-Lin Zhao, Auteur ; Bi Shi, Auteur Année de publication : 2006 Article en page(s) : p. 205-210 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Colorants -- Adsorption
Colorants -- Elimination
Colorants acides
Cuirs et peaux -- Déchets -- Recyclage
Fer
Jaune
Solutions aqueuses (chimie)
Wet-white (tannage)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Fe(III)-loaded adsorbent (FLA) was prepared from waste wet-white. As a new adsorbent, its behaviour towards anionic dyes, Direct Yellow 11 (DY11) and Acid Yellow 11 (AY11), were investigated. It was found that the FLA is effective in removal of anionic dyes from aqueous solution and acidic pH favours the adsorption. The adsorption capacity of DY11 was significantly increased with an increase of temperature, whilst that of AY11 decreased, due to their difference in molecular structures. The maximum adsorption capacities of DY11 and AY11 at 323K were found to be 302.1 and 490.0 mg.g-1 respectively and the adsorption equilibrium data can be well fitted by the Langmuir model. The adsorption kinetics could be accurately described by a pseudo-second-order rate model. Investigation of column adsorption process indicated that FLA is effective in removal of AY11 from water, and the column can be regenerated by using dilute NH3 solution. Note de contenu : - EXPERIMENTAL SECTION : Materials - Methods
- RESULTS AND DISCUSSION : Effect of initial pH on adsorption capacity - Effect of adsorbent dose on removal extent of dyes - Adsorption isotherms - Adsorption kinetics - Column adsorption kinetics
- Table 1 : The Langmuir andFreundlich parameters of dyes on FLA at different temperatures
- Table 2 : Adsorption kinetic model parameters of dyes on FLAEn ligne : https://drive.google.com/file/d/1eIC6sbiqaeiyHpymGJ_mmT5jma51cL7U/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39058
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 5 (09-10/2006) . - p. 205-210[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Application of modulated temperature differential scanning calorimetry (MTDSC) on leather / Richard L. Edmonds in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 6 (11-12/2016)
[article]
Titre : Application of modulated temperature differential scanning calorimetry (MTDSC) on leather Type de document : texte imprimé Auteurs : Richard L. Edmonds, Auteur Année de publication : 2016 Article en page(s) : p. 283-288 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite.
L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement.
L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium.
Analyse thermique
Calorimétrie
Calorimétrie différentielle à température modulée
Cuirs et peaux -- Analyse
Oxazolidine
Peaux brutes
Tannage au chrome
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
Température de retrait
Wet-white (tannage)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Measurement of collagen denaturation by differential scanning calorimetry is commonly used for the study of the shrinkage reaction in feather. In this work, the shrinkage reaction of leather was examined for the first time using modulated temperature differential scanning calorimetry (MTDSC). The shrinkage reaction was first measured using conventional differential scanning calorimetry (DSC) and the parameters for leather shrinkage used to develop the parameters for the application of MTDSC to leather samples. Trials with leather confirm the irreversible nature of the shrinkage reaction within the experimental protocol used. Note de contenu : - EXPERIMENTAL PROCEDURES : Raw skin - Pickle process - Chrome-tanned wet-blue - Aluminium-tanned wet-white - Oxazolidine-tanned wet-white
- RESULTS AND DISCUSSION : MTDSC operation and optimisation - Modulation period - Temperature modulation heating rate - Temperature modulation amplitudeEn ligne : https://drive.google.com/file/d/1rv98zxmy4mq2UaklkmBhs2e4BGJRBXsk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27612
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 6 (11-12/2016) . - p. 283-288[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18546 - Périodique Bibliothèque principale Documentaires Disponible Bio-polymers from leather shavings / Jordi Escabros in LEATHER INTERNATIONAL, Vol. 215, N° 4831 (06/2013)
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Titre : Bio-polymers from leather shavings Type de document : texte imprimé Auteurs : Jordi Escabros, Auteur ; Laura Martinez, Auteur ; Joan Barenys, Auteur Année de publication : 2013 Article en page(s) : p. 30-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biopolymères
Chimie écologique
Cuirs et peaux -- Déchets -- Recyclage
Post-tannage
Travail de rivière (cuir)
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
Wet-white (tannage)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Despite all the efforts to develop an organic tanning process able to meet the same standards as the chrome tanning and wet-blue production (WB), no universal system has still been developed with the same performance and wide spectrum of applications as chrome tanned leathers.
Assuming that chrome tanning and wet-blue production will still be in use over the next few years, and bearing in mind that chrome shavings and other solid chrome containing wastes represent one of the major problems for disposal or recycling, Trumpler have been develop ng an innovative process designed to reprocess and reuse shavings (from wet-blue or wet-white) in the production of a novel range of green chemicals with a low carbon footprint for the retanning of leather.
Currently chrome shavings are disposed of in landfill or recycled in the production of leather board. Current methods of using chrome shavings include an economic cost to the tanner. The total quantity of chrome shavings produced will be strongly dependent on the kind of article and the process used in each tannery.Note de contenu : - Proposal
- Chemical properties
- Economic evaluation
- Carbon footprint of bio-polymers from shavings.
- Figure 1. Concepts of a life cycle assessment of a product
- Table 1. Comparison values of PCF for bio-polymers and synthetic polymersEn ligne : https://drive.google.com/file/d/1AmArwreIXcLVNRrTG7Nwd8koUXcx7aoQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19111
in LEATHER INTERNATIONAL > Vol. 215, N° 4831 (06/2013) . - p. 30-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15327 - Périodique Bibliothèque principale Documentaires Disponible Biodegradability of "eco-friendly" leather using respirometric approach / Marco Guida in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 9 (09/2019)
[article]
Titre : Biodegradability of "eco-friendly" leather using respirometric approach Type de document : texte imprimé Auteurs : Marco Guida, Auteur ; Antonella Giorgio, Auteur ; Roberta Aveta, Auteur ; Maria Scotti, Auteur ; Daniela Caracciolo, Auteur ; Giovanni Libralato, Auteur ; Francesco Aliberti, Auteur ; Salvatore De Bonis, Auteur ; Biagio Naviglio, Auteur Année de publication : 2019 Article en page(s) : p. 325-332 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux -- Biodégradation
Respirométrie
Sels métalliques
Tannage au chrome
Tannage sans sels
Wet-white (tannage)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Biodegradability is the ability of degradation of organic substances and materials into more simple inorganic substances through enzymatic activity of microorganisms. The measure of the tanning products biodegradability allows to predict the deterioration of the materials and allows to assess their impact on the environment since chromium, derived from tanning industries, could be transformed in the hexavalent stage of chromium (Cr6+) that is a suspected carcinogen. Three leather samples, have been chosen for biodegradability test, in order to evaluate differences in biodegradability and to evaluate the possibility of using alternative leathers of those based on chromium. It was possible to make a comparison between three different leather samples; among these, the highest percentage of biodegradability was found for the metal-free leather sample (84%) compared to 45% and 80% of the chrome leather and wet-white leather samples. Results highlight the possibility of using differently tanned leathers with a considerably reduced environmental impact. Note de contenu : - Materials
- Microscoic and physic-chemical analysis
- Biodegradability analysis
- Table 1 : List of chemical parameters analyzed in leather samples
- Table 2 : List of physical parameters analyzed in leather samples
- Table 3 : Results of chemical analysis of leathers
- Table 4 : Results of physical analysis of leathersEn ligne : https://drive.google.com/file/d/1xZjGx_qg9Sj3L9wShUxVz9OG-d_oNoGF/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32900
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Code-barres Cote Support Localisation Section Disponibilité 21174 - Périodique Bibliothèque principale Documentaires Disponible Biodegradation of wet-white leather / Lluis Ollé in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 3 (05-06/2011)
PermalinkCharacteristics of aldehyde reactive dyes for leather dyeing and retanning process / Xiao Chen in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 10 (10/2015)
PermalinkCleaner processing of bovine wet-white : synthesis and application of a novel chrome-free tanning agent based on an amphoteric organic compound / Luo Jianxun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)
PermalinkComparison of the effect of the tropical test on both chrome-tanned and wet-white upholstery leather / Lluis Ollé in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 3 (05-06/2011)
PermalinkComparison of the sustainability of the vegetable, wet-white and chromium tanning processes through the life cycle analysis / Anna Bacardit in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 3 (03/2020)
PermalinkComparison of weathering variables on chrome-tanned and wet-white leather ageing / Lluis Ollé in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 1 (01-02/2012)
PermalinkEffect of mixed metal pretannage with zinc and titanium plus masking agents / Shan Cao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 3 (05-06/2015)
PermalinkEffect of sodium chloride on structure of collagen fiber network in pickling and tanning / Li Xinxin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 6 (06/2016)
PermalinkEvaluation of collagen hydrolysate on the performance properties of different wet-white tanned leathers / Yusuf Dilek in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 3 (05-06/2019)
PermalinkFine hair on american bovine leathers / Luis A. Zugno in INTERNATIONAL LEATHER MAKER (ILM), N° 38 (11-12/2019)
PermalinkInteraction between retanning agents and wet white tanned by a novel bimetal complex tanning agent / Wanli Huang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
PermalinkInverse chrome tanning technology based on wet white tanned by Al-Zr complex tanning agent / Siwei Cai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 4 (04/2015)
PermalinkInverse chrome tanning technology : A practical approach to minimizing Cr(III) discharge / Yue Yu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 5 (05/2020)
PermalinkIs deamidation bad for chromium-free ? / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 35 (05-06/2019)
PermalinkLow carbon products to design innovative leather processes. Part III : optimization of an eco-friendly formulation using tara / Anna Bacardit in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 9 (09/2015)
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