Accueil
COLORATION TECHNOLOGY / Society of dyers and colourists . Vol. 127, N° 4Mention de date : 2011Paru le : 26/07/2011 |
Dépouillements
Ajouter le résultat dans votre panierBioscouring of cellulosic textiles / Ahmad Niaz in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Bioscouring of cellulosic textiles Type de document : texte imprimé Auteurs : Ahmad Niaz, Auteur ; Qaiser Jawed Malik, Auteur ; Sher Muhammad, Auteur ; Tahir Schamim, Auteur ; Shoaib Asghar, Auteur Année de publication : 2011 Article en page(s) : p. 211-216 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Enzymes végétales
Fibres cellulosiques
Pectinase
Textiles et tissus -- LavageIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A study on bioscouring of cotton yarn with the pectinase enzyme was carried out and the results compared with the usual alkali scoured material. The results indicate that the bioscoured yarn has lower percentage of non-cellulosic constituents (impurities), higher tenacity, higher absorbency and the same whiteness after hydrogen peroxide bleaching as compared with the Solomatic bleached yarn. A similar study on cotton fabric indicates that a combined desizing and bioscouring is not feasible at least at ambient temperature. More work, however, is required to compare bioscouring followed by bleaching with the Solomatic or two step scouring and bleaching methods. One interesting finding is that the efficiency of washing of the desized fabric improves on adding ethylene diamine tetraacetic acid sequestrating agent in the wash liquor. Additional advantages of bioscouring are lower energy cost and more easily biodegradable effluent in comparison to alkali scouring. Note de contenu : INTRODUCTION : Composition of cotton fibres - Structure of pectin - Use of enzymes in textile wet-processing - The nature and function of enzymes - Biocouring with enzymes - Aims of the study
EXPERIMENTAL : Materials - Methods
RESULTS AND DISCUSSION : Cotton yards - Discussion of results - Cotton fabricDOI : 10.1111/j.1478-4408.2011.00292.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11899
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 211-216[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Correlation between the shade of an azo disperse dye on poly(ethylene terephthalate) and poly(lactic acid) fibres with its spectroscopic properties in selected organic solvents / Jantip Suesat in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Correlation between the shade of an azo disperse dye on poly(ethylene terephthalate) and poly(lactic acid) fibres with its spectroscopic properties in selected organic solvents Type de document : texte imprimé Auteurs : Jantip Suesat, Auteur ; Thanarak Mungmeechai, Auteur ; Potjarnart Suwanruji, Auteur ; Waraporn Parasuk, Auteur ; John A. Taylor, Auteur ; Duncan A. S. Phillips, Auteur Année de publication : 2011 Article en page(s) : p. 217-222 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acétate d'éthyle L'acétate d'éthyle (éthanoate d'éthyle) est un liquide, à l'odeur caractéristique du dissolvant de vernis à ongles. C'est un ester résultant de l'éthanol et de l'acide acétique utilisé principalement comme solvant. On le trouve, à l'état naturel, en faibles quantités dans le rhum et dans les raisins endommagés par la grêle.
L'acétate d'éthyle est un solvant de polarité moyenne, peu toxique15 et non hygroscopique, qui possède une grande volatilité. C'est un accepteur faible en raison de liaisons hydrogène. Il peut dissoudre jusqu'à 3 % d'eau et possède une solubilité dans l'eau de 8 % à température normale. Cette solubilité augmente avec la température. Il est instable au contact de bases et d'acides forts en présence desquels il est hydrolysé en acide acétique (acide éthanoïque) et éthanol.
Il est rarement utilisé comme solvant pour une réaction chimique en raison de sa réactivité avec les bases et les acides.
Benzoate de méthyleLe benzoate de méthyle a pour formule brute C6H5COOCH3. Il comporte une fonction ester.
Colorants azoïques
Fibres textiles synthétiques -- Propriétés spectrales
Polyesters
Polyéthylène téréphtalate
Polylactique, AcideL'acide polylactique (anglais : polylactic acid, abrégé en PLA) est un polymère entièrement biodégradable utilisé dans l'alimentation pour l'emballage des œufs et plus récemment pour remplacer les sacs et cabas en plastiques jusqu'ici distribués dans les commerces. Il est utilisé également en chirurgie où les sutures sont réalisées avec des polymères biodégradables qui sont décomposés par réaction avec l’eau ou sous l’action d’enzymes. Il est également utilisé pour les nouveaux essais de stent biodégradable.
Le PLA peut-être obtenu à partir d'amidon de maïs, ce qui en fait la première alternative naturelle au polyéthylène (le terme de bioplastique est utilisé). En effet, l'acide polylactique est un produit résultant de la fermentation des sucres ou de l'amidon sous l'effet de bactéries synthétisant l'acide lactique. Dans un second temps, l'acide lactique est polymérisé par un nouveau procédé de fermentation, pour devenir de l'acide polylactique.
Ce procédé conduit à des polymères avec des masses molaires relativement basses. Afin de produire un acide polylactique avec des masses molaires plus élevées, l'acide polylactique produit par condensation de l'acide lactique est dépolymérisé, produisant du lactide, qui est à son tour polymérisé par ouverture de cycle.
Le PLA est donc l’un de ces polymères, dans lequel les longues molécules filiformes sont construites par la réaction d’un groupement acide et d’une molécule d’acide lactique sur le groupement hydroxyle d’une autre pour donner une jonction ester. Dans le corps, la réaction se fait en sens inverse et l’acide lactique ainsi libéré est incorporé dans le processus métabolique normal. On obtient un polymère plus résistant en utilisant l'acide glycolique, soit seul, soit combiné à l’acide lactique.
Réflectance
Solvants organiques
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A series of azo disperse dyes was synthesised and the purified, synthesised dyes were characterised by proton nuclear magnetic resonance, thin-layer chromatography and melting point measurement. The spectroscopic properties of the dyes in solution were studied by dissolving the dyes in ethyl acetate and methyl benzoate. These were seen as mimicking the environment of the dye when inside dyed poly(lactic acid) and poly(ethylene terephthalate), respectively. Reflectance spectra of the dyes on both polyester substrates were also measured in order to correlate with the spectroscopic properties of the dyes in solution. The absorbance spectra of the dyes in solution exhibited a hypsochromic (lower wavelength of maximum exhaustion) shift when dissolved in ethyl acetate, compared with methyl benzoate. The occurrence of this yellow shift was attributed to the lower polarity of ethyl acetate compared with methyl benzoate. The colour of the dyes in ethyl acetate solution was also brighter and stronger (higher molar extinction coefficients) than that in methyl benzoate. Most of the synthesised dyes exhibited high levels of exhaustion onto the two polyester fabrics. However, the visual colour yields, for those dyes having approximately the same high level of exhaustion, were different, the dyed poly(lactic acid) being stronger (higher K/S value) as well as being yellower and a trace brighter than the dyed poly(ethylene terephthalate). This difference correlated well with the solvatochromic study of the dyes in ethyl acetate and methyl benzoate solution. Note de contenu : EXPERIMENTAL : Materials - Synthesis of aso disperse dyes - Solvatochromic study of the dyes in the selected organic solvents - Dyeing properties of the dyes on polyester fibres - Determination of the reflectance properties of the dyed polyester fabric
RESULTS AND DISCUSSION : Characterisation of the synthesised dyes - Solvatochromic study of the dyes in the selected organic - Dyeing properties of the dyes on different polyester fibresDOI : 10.1111/j.1478-4408.2011.00301.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11900
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 217-222[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Methyl methacrylate-assisted dyeing of polyamide microfibre / Soleimani-Gorgani Atasheh in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Methyl methacrylate-assisted dyeing of polyamide microfibre Type de document : texte imprimé Auteurs : Soleimani-Gorgani Atasheh, Auteur ; John A. Taylor, Auteur Année de publication : 2011 Article en page(s) : p. 223-226 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Fibres textiles
Méthacrylate de méthyle
Microfibres
Microscopie électronique à balayage
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Polyamide microfibres were dyed using disperse dye in the presence and absence of methyl methacrylate. The dye uptake and colour strength in the presence of methyl methacrylate were substantially higher than in its absence. Scanning electron microscope analysis showed that there was a dye layer on the microfibre surface formed by methyl methacrylate adsorption after dyeing. Differential scanning calorimetry measurement showed that the glass transition temperature of the polyamide microfibre reduced following methyl methacrylate treatment. The ultimate consequence of all these functions was to facilitate diffusion of dye molecules into the microfibre, thereby increasing the colour strength. The wash fastness of the dyed samples was identical for the two different dyebaths, although there were slight differences in the staining grades. The rub fastness of the methyl methacrylate-treated samples was improved by ca. half a grade. The methyl methacrylate had no effect on light fastness. Note de contenu : EXPERIMENTAL : Materials - Dyeing procedure - Colour strength measurements - Dye uptake - Wash fastness - Surface morphology - Glass transition temperature.
RESULTS AND DISCUSSION : Effect of monomer concentration on dye uptake and colour strength (K/S) - Effect of monomer on glass trnasition temperature of polyamide microfibre - Dyeing rate - Colour fastness.DOI : 10.1111/j.1478-4408.2011.00302.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11901
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 223-226[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and evaluation of a novel blue cationic reactive dye for modified nylon 6.6 ‘Tactel Coloursafe’ / Soleimani-Gorgani Atasheh in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Synthesis and evaluation of a novel blue cationic reactive dye for modified nylon 6.6 ‘Tactel Coloursafe’ Type de document : texte imprimé Auteurs : Soleimani-Gorgani Atasheh, Auteur ; John A. Taylor, Auteur Année de publication : 2011 Article en page(s) : p. 227-234 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Benzothiazoles
Colorants azoïques
Colorants cationiques
Colorants réactifs
Polyamide 66
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A novel blue cationic reactive dye (dye 1) based on an azo benzothiazole derivative and possessing an acrylamido reactive group, was synthesised and evaluated on dyeing Coloursafe modified nylon 6.6 at optimum pH. Benzothiazole quaternary dye was chosen as a target as this is known to be very strong chromophically. Evaluation of the technical properties of dye 1 showed that it fixed efficiently to nylon under acidic dyeing conditions. As it was necessary to prove that fixation occurs via a covalent bond, the dyeing properties of a non-reactive cationic dye, (CI Basic Blue 41), on dyeing nylon 6.6 at optimum pH were evaluated. CI Basic Blue 41 was similar in structure to dye 1 and would be capable of forming an ion–ion bond with the fibre. Evaluation of the technical properties of dye 1 proved that, in all cases, its fixation efficiency and build-up properties were far better than that of CI Basic Blue 41. Note de contenu : EXPERIMENTAL : Preparation dyes - Determination of dye 1 hydrolysis - Dyeing - Colour strength (K/S) of dyes on fabric - Dye exhaustion - Dye fixation - Determination of effective agent content of dyes
RESULTS AND DISCUSSION : Measurement of Mol In - Effect of pH on dyeing performance - Build-up of dye 1 and CI basic blue 41 on nylon 6.6 'Tactel coloursafe' - Hydrolysis of dye 1 in aqueous alkali - Wash fastnessDOI : 10.1111/j.1478-4408.2011.00303.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11902
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 227-234[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Colour management in digital textile printing / Dejana Javorsek in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Colour management in digital textile printing Type de document : texte imprimé Auteurs : Dejana Javorsek, Auteur ; Andrej Javorsek, Auteur Année de publication : 2011 Article en page(s) : p. 235--239 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie
Impression au laser
Impression jet d'encre
Impression numérique
Impression sur étoffes
Simulation, Méthode deIndex. décimale : 667.3 Teinture et impression des tissus Résumé : On the basis of simulated prints, a customer can decide on the colour appropriateness for a selected pattern. This article presents the possibilities and correct procedure for colour management application in the field of digital printing onto a textile substrate. The aim of the research was to establish whether long-term and expensive pre- and after-treatments can be avoided with the help of an appropriate development of printer profiles. The latter would be conducted through a print simulation on paper printed with a Canon laser or ink-jet printer. The results have confirmed that a print simulation on paper can be conducted with both printers, while a Canon ink-jet printer offers better results. In addition, by calculating the colour inconstancy index CMCCON02, the illuminant influence on the colour change of substrates under five different illuminations was determined. The results showed that simulated colours should be compared with original colours under daylight illuminants (D50, D55 and D75), while indoor illuminants A and F2 are not appropriate for a comparison, especially in the case of simulation with a Canon ink-jet printer (CMCCON02 index >5). Note de contenu : EXPERIMENTAL : Material - Pretreatment of textile fabric - Linearisation and characterisation of printer devices - Colour samples - Printing process performed on the Mimaki ink-jet printer - Simulation of prints - Colour measurements - Calculation of the colour inconstancy index CMCCON02.
RESULTS AND DISCUSSION : Colour inconstancy index - Simulation of prints.DOI : 10.1111/j.1478-4408.2011.00304.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11903
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 235--239[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Spectral dependence of colorimetric characterisation of scanners / Hossein Fashandi in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Spectral dependence of colorimetric characterisation of scanners Type de document : texte imprimé Auteurs : Hossein Fashandi, Auteur ; Seyed Hossein Amirshahi, Auteur ; Mohammad Amani Tehran, Auteur ; Saeideh Gorji Kandi, Auteur Année de publication : 2011 Article en page(s) : p. 240-245 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie Tags : 'Caractérisation colorimétrique' 'Module balayage' 'Propriétés spectrales' Index. décimale : 667.3 Teinture et impression des tissus Résumé : The spectral dependence of the colorimetric characterisation of a typical scanner was investigated. Different colour sets, including ColorChecker SG, Kodak Q-60 colour input target, a set of plain woven coloured fabrics with a large colour gamut, and randomly selected samples of the Munsell Book of Color were used as training and testing sets in the colorimetric characterisation of a scanner by employing a non-linear regression method. The coefficient matrices were optimised for each particular media in the training stage and used to predict the device-independent colorimetric data, i.e. CIELab values of other media from their corresponding RGB values measured by the scanner. In order to extract the differences between the applied sets and determine the actual dimensions of their reflectance spectra, the principal component analysis technique was employed. As expected, it was observed that the different sets benefit from diverse dimensional properties and, in some cases, the spectral behaviours of the first few eigenvectors were apparently different. It was demonstrated that scanner colorimetric characterisation depended on the spectral properties of the applied colour set in the training stage and, consequently, the testing errors increased with increasing the spectral dissimilarity between the sets that were used in training and testing sequences. It was concluded that, to achieve better colour reproduction results, the scanner should be characterised for each media with specific spectral properties. Note de contenu : - Sample sets
- Spectrophotometric measurements
- Scanner characterisationDOI : 10.1111/j.1478-4408.2011.00305.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11904
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 240-245[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Removal of methylene blue from aqueous solutions by using cold plasma- and formaldehyde-treated onion skins / Cafer Saka in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Removal of methylene blue from aqueous solutions by using cold plasma- and formaldehyde-treated onion skins Type de document : texte imprimé Auteurs : Cafer Saka, Auteur ; Ömer Satin, Auteur Année de publication : 2011 Article en page(s) : p. 246-255 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Bleu de méthylèneTags : 'Bleu méthylène' Adsorption' 'Plasma froid' 'Peau oignon' Formaldéhyde Biosorbant Sorption 'Modèles isothermes' FTIR Index. décimale : 667.3 Teinture et impression des tissus Résumé : In this paper, the use of cold plasma-treated and formaldehyde-treated onion skins as a biosorbent has been investigated to remove methylene blue dye from aqueous solutions. The surface characteristics of the treated onion skins were investigated using Fourier Transform–infrared spectroscopy. The influence of process variables such as adsorbent dosage, initial dye concentration and pH were studied. Equilibrium isotherms were analysed by Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherm models. The results indicated that the data for adsorption of methylene blue onto onion skins fitted well with the Langmuir isotherm model. The sorption capacities for cold plasma-treated and formaldehyde-treated onion skins by Langmuir isotherm were found to be 250 and 166.67 mg/g, respectively. The equilibrium time was found to be 150 min for 50 mg/l dye concentrations. The maximum removals for cold plasma-treated and formaldehyde-treated onion skins obtained were 90.94 and 95.54% at natural pH 10.0 for adsorbent doses of 0.15 g/200 ml, respectively. The rates of sorption were found to conform to pseudo-first-order kinetics. Results indicated that onion skins could be used as a biosorbent to remove methylene blue dye from contaminated waters. Note de contenu : - Zero point of charge determination
- Effect of plasma applying time on surface area
- FTIR analysis
- Effect of pH
- Effect of contact time and initial concentration on adsorption
- Effect of adsorbent dosage on adsorption kinetics
- Adsorption kinetic studies
- Adsorption isotherms modelsDOI : 10.1111/j.1478-4408.2011.00306.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11905
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 246-255[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible Investigation of a homogeneous activating ozonation method in the rinsing procedure of cotton fabric dyed with reactive dye / Ya-Hong Mao in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : Investigation of a homogeneous activating ozonation method in the rinsing procedure of cotton fabric dyed with reactive dye Type de document : texte imprimé Auteurs : Ya-Hong Mao, Auteur ; Yu Guan, Auteur ; Deng-Hong Luo, Auteur ; Qing-Kang Zheng, Auteur ; Xi-Ning Feng, Auteur ; Xiu-Xing Wang, Auteur Année de publication : 2011 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Oxydation
Colorants réactifs
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Eaux usées -- Epuration
Rinçage
Teinture -- Fibres textiles
Tétra-acétyl-éthylène-diamine
Textiles et tissusIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The textile dyeing process requires the consumption of large quantities of water, which includes huge amounts of coloured wastewater. Usually the rinsing of dyed fabric and the treating of the dyeing house wastewater are separated. The two independent processes not only increase the difficulty of wastewater treatment but also increase the costs of the treatment. In this paper, the ozone/tetraacetylethylenediamine active oxidation technology was employed to rinse dyed fabric and to decolorise the rinsing wastewater simultaneously. The effects of the rinsing conditions on the decolorisation ratio and the chemical oxygen demand Cr value of treated wastewater, and the K/S value, colour difference, tensile strength and fastness of dyed samples were investigated. The results indicated that the decolorisation ratio of the rinsing effluent was greater than 80% and the chemical oxygen demand Cr value decreased more than 58% by the ozone/tetraacetylethylenediamine rinsing process compared with that of traditional rinsing processes. Furthermore, the curve of decolorisation kinetics was in good agreement with a pseudo-first-order kinetic model. In addition, the decolorisation mechanism was also discussed after ultraviolet–visible and ultra performance liquid chromatograph–mass spectrometry analyses of the degraded dye molecule. Note de contenu : EXPERIMENTAL : Materials - Ozonation decolorisation experiment - Dyeing procedure - Rinsing process - Measurements of the output quantity and the utilisation of ozone - Measurements of rinsing effluent - Analysis of the decolorisation kinetics - Tests of dyed fabrics - Measurement of liquid and air surface tension - Analysis of degradation products.
RESULTS AND DISCUSSION : Effect of rinsing conditions on the decolorisation ratio of rinsing effluent - Environmental effect of ozone/TAED rinsing effluent - Ozonation decolorisation reaction kinetics - Effect of ozone/TAED rinsing on the dyed fabric - Destruction of the dye molecule during the ozone/TAED rinsing process.DOI : 10.1111/j.1478-4408.2011.00309.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11906
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011)[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible The sonochemical decolorisation of textile azo dye CI Reactive Orange 127 / Celalettin Özdemir in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
[article]
Titre : The sonochemical decolorisation of textile azo dye CI Reactive Orange 127 Type de document : texte imprimé Auteurs : Celalettin Özdemir, Auteur ; Muhammed K. Öden, Auteur ; Serkan Sahinkaya, Auteur ; Dünyamin Güçlü, Auteur Année de publication : 2011 Article en page(s) : p. 268-273 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alcool polyvinylique
Colorants -- Oxydation
Colorants azoïques
Colorants réactifs
Décoloration
Eaux usées -- Epuration
Fenton, Réaction de
Fer
Ions métalliques
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.
Sonochimie
UltrasonsIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In the present study, Fenton and sono-Fenton processes were applied to the oxidative decolorisation of synthetic textile wastewater including CI Reactive Orange 127 and polyvinyl alcohol. Process optimisation [pH, ferrous ion (Fe2+) and hydrogen peroxide (H2O2)], kinetic studies and their comparison were carried out for both of the processes. The sono-Fenton process was performed by indirect sonication in an ultrasonic water bath, which was operated at a fixed 35-kHz frequency and 80 W power. The optimum conditions were determined as [Fe2+] = 20 mg l−1, [H2O2] = 15 mg l−1 and pH = 3 for the Fenton process and [Fe2+] = 25 mg l−1, [H2O2] = 5 mg l−1 and pH = 3 for the sono-Fenton process. The colour removals were 89.9% and 91.8% by the Fenton and sono-Fenton processes, respectively. The highest decolorisation was achieved by the sono-Fenton process because of the production of some oxidising agents as a result of sonication. Consequently, ultrasonic irradiation in the sono-Fenton process slightly increased the colour removal to 91.8%, while decreasing the hydrogen peroxide dosage to one-third of that of the Fenton process. Note de contenu : EXPERIMENTAL : Materials - Experimental set-up - Sample analysis
RESULTS AND DISCUSSION : Effect of initial pH - Effect of ferrous ion concentration - Effect of hydrogen peroxide concentration - Kinetic studiesDOI : 10.1111/j.1478-4408.2011.00310.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11907
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 268-273[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013185 - Périodique Bibliothèque principale Documentaires Disponible
Exemplaires (1)
Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
013185 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |