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Adsorption characteristics of CI Basic Blue 3 from aqueous solution onto Aleppo pine-tree sawdust / Naima Ouazene in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)
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Titre : Adsorption characteristics of CI Basic Blue 3 from aqueous solution onto Aleppo pine-tree sawdust Type de document : texte imprimé Auteurs : Naima Ouazene, Auteur ; Azzedine Lounis, Auteur Année de publication : 2012 Article en page(s) : p. 21-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Colorants -- Adsorption
Pin d'Alep
Sciure de bois
Solutions aqueuses (chimie)Index. décimale : 667.3 Teinture et impression des tissus Résumé : Aleppo pine-tree sawdust, a forest waste abundantly available in Algeria, was used for the adsorption of CI Basic Blue 3 from an aqueous solution. The effects of adsorbent dosage, pH, adsorbate concentration and contact time were studied. The equilibrium adsorption data were analysed by Langmuir, Freundlich and Temkin isotherm models. It was found that the Langmuir isotherm fitted well to the observed data for CI Basic Blue 3 adsorption onto Aleppo pine-tree sawdust based on the correlation coefficient R2 and four different error functions for the non-linear regression. The adsorption capacity of Aleppo pine-tree sawdust for CI Basic Blue 3 was determined with the Langmuir model and was found to be 65.36 mg g−1 at 293 K. The adsorption kinetic data were modelled using the pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic equations. It was seen that the pseudo-second-order equation could describe the adsorption kinetics and intraparticle diffusion was not the sole rate-controlling factor. The results indicated that Aleppo pine-tree sawdust is an attractive alternative for removing cationic dyes from wastewater. Note de contenu : - EXPERIMENTAL : Materials - Batch adsorption studies - Error analysis
- RESULTS AND DISCUSSION : Characterisation of the adsorbent - Effect of contact time and initial dye concentration - Effect of adsorbent dosage - Effect of pH - Adsorption isotherms - Kinetic studies - Adsorption mechanisms - Evaluation of Aleppo pine-tree sawdust as an adsorbentDOI : 10.1111/j.1478-4408.2011.00327.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00327.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13093
in COLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 21-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13529 - Périodique Bibliothèque principale Documentaires Disponible Adsorption characteristics of ionic and nonionic surfactants on hydrophobic pigment in aqueous medium / Hikmet Sis in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)
[article]
Titre : Adsorption characteristics of ionic and nonionic surfactants on hydrophobic pigment in aqueous medium Type de document : texte imprimé Auteurs : Hikmet Sis, Auteur ; Mustafa Birinci, Auteur Année de publication : 2012 Article en page(s) : p. 244-249 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Colorants -- Adsorption
Hydrophobie
Nonylphenol éthoxylates
Oléate de sodium
Phtalocyanine de cuivre
Potentiel zeta
SurfactantsIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The current study is based on the investigation of the adsorption properties of ionic and nonionic surfactants on an organic hydrophobic pigment powder, namely, β-copper phthalocyanine, in aqueous medium. The nonionic surfactants, selected systematically to represent varying degrees of ethoxylation, are nonylphenol ethoxylates, whereas the ionic surfactant is sodium oleate, a carboxylate-type anionic reagent. The adsorption of surfactants was assessed qualitatively by surface analysis of powders, before and after the adsorption of the surfactants. The experimental results were explained by the structural and other properties of the surfactants and the surface properties of the pigment. The specific adsorption of surfactants on pigments was verified by zeta potential measurements, as they altered the zeta potential values to a great extent. Nonionic surfactants decreased the absolute value of the zeta potential of the powder; whereas anionic surfactant sodium oleate shifted the zeta potential to more negative values. On the one hand, Fourier Transform–infrared and X-ray diffraction examinations of the pigments did not show any noticeable evidence for surfactant untreated or treated copper phthalocyanine. On the other hand, thermal analysis (both thermogravimetric and differential thermal analysis) showed clear evidence of the surfactants on both pigments, as substantial changes in thermogravimetric curves were assessed. Note de contenu : - EXPERIMENTAL : Materials - Zeta potential measurements
- RESULTS AND DISCUSSION : Zeta potential of copper phthalocyanine blue pigment - Interactions of surfactants and pigmentsDOI : 10.1111/j.1478-4408.2012.00369.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15128
in COLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 244-249[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13933 - Périodique Bibliothèque principale Documentaires Disponible Adsorption equilibrium studies of a simulated textile effluent containing a wool reactive dye on gallinaceous feathers / Olga M. Freitas in COLORATION TECHNOLOGY, Vol. 132, N° 5 (10/2016)
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Titre : Adsorption equilibrium studies of a simulated textile effluent containing a wool reactive dye on gallinaceous feathers Type de document : texte imprimé Auteurs : Olga M. Freitas, Auteur ; Lilita M. Moura, Auteur ; Sonia A. Figueiredo, Auteur ; Maria T. Pessoa de Amorim, Auteur Année de publication : 2016 Article en page(s) : p. 421-430 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Colorants -- Adsorption
Colorants réactifs
Déchets -- Valorisation
Eaux usées -- Analyse
Eaux usées -- Epuration
PlumesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Gallinaceous feathers (from Gallus gallus domesticus, strains Cobb 500 and Label) were used as adsorbent for colour removal from a simulated textile effluent containing a wool reactive dye, the Yellow Lanasol 4G (CI Reactive Yellow 39). A brief chemical and physical characterisation of feathers was performed. Equilibrium studies at different selected temperatures, in the range 10–60 °C, were carried out. The equilibrium data were analysed using the Freundlich and Langmuir isotherm models. Adsorption capacity strongly increases with temperature. A maximum adsorption capacity of around 300 mg g?1 was obtained for Gallus gallus feathers, strain Cobb 500, at 60 °C, while for strain Label, 200 mg g?1 was obtained at 50 °C. For each type of feather a generalised model, valid for a given temperature range, was obtained. The isosteric heat of adsorption calculated was positive, so the mechanism involved in the adsorption process should correspond to endothermic chemisorption. This study provides important information concerning the use of gallinaceous feathers without any chemical treatment for colour removal from real textile wastewaters. The results in this study indicated that gallinaceous feathers, when compared with activated carbon, open promising perspectives concerning their utilisation for colour removal from textile effluent discharged at high temperatures; moreover, it would be an alternative for the valorisation of this waste. Note de contenu : - MATERIALS AND METHODS : Adsorbents and characterisation - Dyestuff and simulated dyebath effluent preparation - Kinetic tests - Equilibrium tests - Analytical control of pH and dyestuff concentration
- RESULTS AND DISCUSSION : Adsorbent characterisation- Adsorbent : feather of Gallus gallus Cobb 500 - Adsorbent : feathers of Gallus gallus Label - Comparison of Gallus gallus Cobb 500 and label feathers - Comparison of Gallus gallus label feathers with other feathersDOI : 10.1111/cote.12234 En ligne : https://drive.google.com/file/d/1sNRLvUPiOtpVcHPET3d6hrm2crLR-93X/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27234
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Code-barres Cote Support Localisation Section Disponibilité 18353 - Périodique Bibliothèque principale Documentaires Disponible Adsorption of dyes from aqueus solution by chromium-containing leather waste / Zhang Mina in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 6 (11-12/2004)
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Titre : Adsorption of dyes from aqueus solution by chromium-containing leather waste Type de document : texte imprimé Auteurs : Zhang Mina, Auteur ; Bi Shi, Auteur Année de publication : 2004 Article en page(s) : p. 236-241 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Adsorption
Cuir -- Déchets
Cuir -- teneur en chrome
Solutions aqueuses (chimie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The adsorption behaviours were investigated of chromium-containing leather waste towards Acid Flavine G ( Acid Yellow 11; 18820) and Direct Pink 12B (Direct Red 31; 29100) in aqueous solution. The results indicated that both the acid dye and direct dye could be significantly adsorbed by this novel adsorbent. Acid pH values favor the adsorption and the adsorption capacity decreases with the increase of pH. The experimental data of adsorption isotherms of both the dyes fit well to the Langmuir model rather than the Freundlich model. The greatest amounts adsorbed of Acid Flavine G and Direct Pink 12B, at 293K, were 803.4mg/g and 798.7mg/g, respectively when the initial concentration of dye solution was 2000mg/L. The adsorption capacities of the dyes increased further with rising temperature. As the temperature was increased to 323K, the maximum adsorption amounts of Acid Flavine G and Direct Pink 12B reached 980.4mg/g and 1369mg/g respectively, which indicated that the mechanism of the adsorption might be chemical adsorption.
The adsorption kinetics data can be well-described by the pseudo-second-order rate model. The adsorption capacities calculated by the pseudo-second-order rate model were close to those determined by actual measurement (error < 8 %). The column adsorption kinetics studies showed that the breakthrough points of Acid Flavine G and Direct Pink 12B were 30 and 40 bed volumes in the experimental system, which indicated that the adsorption column has a high availability for adsorption of dyes. Desorption studies showed that the Acid Flavine G adsorbed could be completely desorbed by using 0.1mol/L NaHCO3, but complete desorption of Direct Pink 12B was somewhat difficult.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Influence of pH on adsorption - Adsorption isotherm studies - Adsorption kinetics studies - Column adsorption kinetics studies
- RESULTS AND DISCUSSION : Proper pH value for adsorption - Adsorption isotherms - Adsorption kinetics - Column adsorption kinetics
- Table 1 : Parameters obtained for the Langmuir isotherm model
- Table 2 : Parameters obtained for the Freundlich isotherm
- Table 3 : Adsorption kinetics parameters of dyes on chromium-containing leather absorbent (initial conc. 500mg/L, pH=3)En ligne : https://drive.google.com/file/d/1N6K4jS_TusSEBSnzKLcyE2-JY2hK2n_7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39616
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 88, N° 6 (11-12/2004) . - p. 236-241[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Adsorption of a spent reactive dyebath by a chitosan bed : study of water reuse, bed regeneration, and UV/Fenton oxidation / Chunhui Li in COLORATION TECHNOLOGY, Vol. 130, N° 2 (04/2014)
[article]
Titre : Adsorption of a spent reactive dyebath by a chitosan bed : study of water reuse, bed regeneration, and UV/Fenton oxidation Type de document : texte imprimé Auteurs : Chunhui Li, Auteur ; Jinxin He, Auteur Année de publication : 2014 Article en page(s) : p. 93-101 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bains de teinture -- Epuration
ChitosaneLe chitosane ou chitosan est un polyoside composé de la distribution aléatoire de D-glucosamine liée en ß-(1-4) (unité désacétylée) et de N-acétyl-D-glucosamine (unité acétylée). Il est produit par désacétylation chimique (en milieu alcalin) ou enzymatique de la chitine, le composant de l'exosquelette des arthropodes (crustacés) ou de l'endosquelette des céphalopodes (calmars...) ou encore de la paroi des champignons. Cette matière première est déminéralisée par traitement à l'acide chlorhydrique, puis déprotéinée en présence de soude ou de potasse et enfin décolorée grâce à un agent oxydant. Le degré d'acétylation (DA) est le pourcentage d'unités acétylées par rapport au nombre d'unités totales, il peut être déterminé par spectroscopie infrarouge à transformée de Fourier (IR-TF) ou par un titrage par une base forte. La frontière entre chitosane et chitine correspond à un DA de 50 % : en deçà le composé est nommé chitosane, au-delà , chitine. Le chitosane est soluble en milieu acide contrairement à la chitine qui est insoluble. Il est important de faire la distinction entre le degré d'acétylation (DA) et le degré de déacétylation (DD). L'un étant l'inverse de l'autre c'est-à -dire que du chitosane ayant un DD de 85 %, possède 15 % de groupements acétyles et 85 % de groupements amines sur ses chaînes.
Le chitosane est biodégradable et biocompatible (notamment hémocompatible). Il est également bactériostatique et fongistatique.
Le chitosane est également utilisé pour le traitement des eaux usées par filtration ainsi que dans divers domaines comme la cosmétique, la diététique et la médecine.
Colorants -- Adsorption
Colorants réactifs
Eaux usées -- Epuration
Eaux usées -- Recyclage
Fenton, Réaction de
Photo-oxydation
Photodétérioration
Rayonnement ultraviolet
Sulfate de sodiumLe sulfate de sodium est un composé chimique courant formé d'un ion sulfate et de deux ions sodium. Lorsqu'il est anhydre, il prend l'apparence d'un solide cristallin blanc de formule chimique Na2SO4. La forme déca-hydratée, Na2SO4·10H2O, est connue sous le nom de sel de Glauber ou mirabilite. Parmi un grand nombre d'usages différents, les principales utilisations du sulfate de sodium concernent la fabrication des détergents et dans le procédé de Kraft de traitement de la pâte à papier. La moitié environ de la production mondiale provient de l'extraction de la forme naturelle décahydratée, et l'autre moitié de productions secondaires dans des procédés de l'industrie chimique.Index. décimale : 667.3 Teinture et impression des tissus Résumé : In the present paper, a facile process combining chitosan bed adsorption and the UV/Fenton advanced oxidation process for treatment and reuse of spent reactive dyebath waste has been developed. The chitosan bed was very effective in decolouring spent reactive dyebath waste by adsorption enrichment of CI Reactive Red 195, and the water and sodium sulphate there in could easily permeate through the chitosan bed and then be recycled. Although the resulting recycled dyebaths were used 10 times as reconstituted dyebaths for dyeing with CI Reactive Red 195, the colour difference and the relative unlevelness index changes of the dyed samples still remained within acceptable levels. That was also true for CI Reactive Blue 19 in the 11th recycling cycle. As a result, an average saving of 60.4% and 93.4% for water and sodium sulphate, respectively, was achieved with the reuse process for the 11 dyebaths. The exhausted chitosan bed can be regenerated three times by dilute alkali without any significant sacrifice of adsorbability or mass. Emissions of the elution concentrates generated from three regeneration runs of the chitosan bed and then treated by UV/Fenton oxidation were found to meet the most stringent emission standards for both chemical oxygen demand and colour in China. Results reveal that the process combining chitosan bed adsorption and UV/Fenton advanced oxidation is promising for treatment and reuse of spent reactive dyebath waste, which can potentially benefit the environment and reduce operating costs. Note de contenu : - EXPERIMENTAL : Materials - Water reuse - Dye oxidation - Parameters to evaluate CAAOP
- RESULTS AND DISCUSSION : Water reuse - Dye oxidation - Water recovery and dosage of salt in recycling cycles - Economic analysisDOI : 10.1111/cote.12077 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12077 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20864
in COLORATION TECHNOLOGY > Vol. 130, N° 2 (04/2014) . - p. 93-101[article]Réservation
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