Accueil
Catégories
> Eaux usées -- Epuration
Eaux usées -- EpurationVoir aussi
|
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
The preparation and application of a montmorillonite-based nanocomposite in leather making / Jianzhong Ma in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)
[article]
Titre : The preparation and application of a montmorillonite-based nanocomposite in leather making Type de document : texte imprimé Auteurs : Jianzhong Ma, Auteur ; Xinjiang Chen, Auteur ; Yun Chu, Auteur ; Zongsui Yang, Auteur Année de publication : 2003 Article en page(s) : p. 131-134 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Adsorption
Caractérisation
Eaux usées -- Epuration
Huiles et graisses
Maroquinerie
Matériaux -- Modifications chimiques
Montmorillonite
Sels d'ammonium
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Montmorillonite (MMT) has been modified with a long chain quaternary ammonium salt through a cation exchange reaction. The extent of the exchange was characterised by XRD (X-ray Diffraction), FT-IR (Fourier Transform Infrared Spectroscopy) and by the determination of CEC (Cation Exchange Capacity).The results prove that alkylammonium ions have taken the place of Na+ ions in Na+ - Montmorillonite (Na-MMT) and that the inter-laminar distance has been enlarged.
The possibility of using Na-MMT and organic-montmorillonite (O-MMT) in the treatment of wastewater from tanneries by utilizing their adsorption properties has been studied. The result shows that Na-MMT and O-MMT can absorb fatliquors to a certain extent.
A series of tanning experiments have been carried out to compare the tanning properties of Na-MMT, O-MMT and O-MMT/Cr3+. The results suggest that Na-MMT and O-MMT have some tanning capability, and that the composite O-MMT/Cr3+ with a very low content of Cr3+ can produce leather of light colour with a shrinkage temperature above 90oC.Note de contenu : - EXPERIMENTAL PROCEDURE :
- Preparation of organic-MMT
- Organic modification of MMT
- Sorption of grease from waste water by Na-MMT and O-MMT
- TANNING WITH NA-MMT AND O-MMT :
- General procedure for tanning
- TANNING WITH O-MMT/CR3+ COMPOSITE :
- Preparation of O-MMT/Cr3+ composite
- RESULTS AND DISCUSSIONS :
- Analysis of CEC, FT-IR and XRD of O-MMT
- Results of sorption of grease in waste water by Na-MMT and O-MMT
- Results of Tanning with Na-MMT and O-MMT
- Table 1 : CEC results for O-MMT
- Table 2 : Results of sorption of grease in waste water by Na-MMT and O-MMT
- Table 3 : Shrinkage temperatures of different tannages
- Table 4 : Thickness increment ratio for different tannages
- Table 5 : Shrinkage temperature of different tannagesEn ligne : https://drive.google.com/file/d/1pTRjBEUgi5rzRX5SyWaG1WAIhJvVgRML/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39767
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 4 (07-08/2003) . - p. 131-134[article]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 The three pot solution for chromium, tannins and solid waste : Recovery and reuse technique for spent semi-chrome liquor and chrome shavings / Subramanian Saravanabhavan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 5 (09-10/2004)
[article]
Titre : The three pot solution for chromium, tannins and solid waste : Recovery and reuse technique for spent semi-chrome liquor and chrome shavings Type de document : texte imprimé Auteurs : Subramanian Saravanabhavan, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur Année de publication : 2004 Article en page(s) : p. 202-207 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Absorption
Chrome -- Recyclage
Colorimétrie
Déchets -- Elimination
Eaux usées -- Décontamination
Eaux usées -- Epuration
Liqueurs de tannage
Récupération (Déchets, etc.)
Solides
Tanins
Tannage au chrome
Température de retraitIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The potential toxicity and environmental impact of chromium and tannins discharged from a tannery has become a key issue, in particular the wastewater generated from the semi-chrome process presents a problem of separating chromium from vegetable tannins by conventional precipitation. This work reports the removal of tannins and recovery of chromium from a spent semi-chrome wastewater using chrome shavings as the adsorbent. Batch mode treatment studies have been carried out to standardize the duration, quantity of chrome shaving and pH. A tannin removal efficiency of 96% has been observed. The tannin-free chromium bearing liquor after the adsorption process was subjected to conventional chromium recovery and re-use and was then used for tanning as a 40% replacement of commercial basic chromium sulphate. The tannin containing chrome shavings were used as a reductant for the preparation of basic chromium sulphate and this was also used for tanning trials. Tanning studies reveal that the quality of the wet blue leathers is on a par with leathers tanned with commercial BCS. Shrinkage temperatures and performance of the leathers, in comparison to a conventional leather, are comparable. Exhaustion of chromium was similar. The procedure described offers a viable solution for the removal of tannins and recovery/reuse of chromium from semi-chrome wastewater, as well as for the disposal of solid wastes such as chrome shavings. Note de contenu : - Introduction : Bulk studies
- Experimental methods : Treatment studies
- Recovery and reuse studies
- Tanning studies : Recovery and reuse - Comparison of the control and experimental (E1 and E2) leathers
- Table 1 : Characteristics of spent semi-chrome liquor and chrome shavings
- Table 2 : Efficiency of tannin removal at various chrome shaving offers
- Table 3 : pH Vs of tannin removal
- Table 4 : Subjective assessment data for control (C) and experimental (E1 and E2) leathers
- Table 5 : Strength characteristics of control (C) and experimental (E1 and E2) leathers
- Table 6 : Shrinkage temperature (Ts) and chromium content of leather and uptake of chromium during control (C) and experimental (E1 and E2) tanning
- Table 7 : Colour measurement data for the control (C) and experimental (E1 and E2) leathersEn ligne : https://drive.google.com/file/d/1y9d25ULtq10cvxZWkfZOsCI8wjcmydJR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39625
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 88, N° 5 (09-10/2004) . - p. 202-207[article]The use of Jatobá bark for removal of cationic dyes / Carla A. Demarchi in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)
[article]
Titre : The use of Jatobá bark for removal of cationic dyes Type de document : texte imprimé Auteurs : Carla A. Demarchi, Auteur ; ALine Debrassi, Auteur ; Clóvis Rodrigues, Auteur Année de publication : 2012 Article en page(s) : p. 208-217 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Adsorption
Colorants cationiques
Eaux usées -- Epuration
Ecorces
Jatoba et constituantsLe jatoba est un immense arbre de la canopée, s'élevant à plus de 30 mètres de haut dans la forêt amazonienne. Le tronc est cylindrique. Ses feuilles alternes d'un vert éclatant sont composées de deux folioles asymétriques. Ses fleurs blanches et odorantes sont rassemblées en grappe. La floraison a lieu entre avril et mai. Les fruits sont des gousses très dures, longues et arrondies aux extrémités, de couleur café foncé, de 9 à 14 cm de long et renferment une à huit graines cachées dans une pulpe farineuse, jaunâtre, sucrée à l’odeur et à la saveur musquées. Ces fruits sont considérés comme étant comestibles bien que pas très bon - d'ailleurs un des noms commun du Jatoba est le stinking toe ou « pieds qui puent »…
Les Hymenaea, dont le jatoba, produisent de la résine. On a d'ailleurs retrouvé de l'ambre de Jatoba, ce qui prouve que leur existence remonte à bien longtemps.Index. décimale : 667.3 Teinture et impression des tissus Résumé : In this work, the application of Jatobá bark (the waste product of medicinal plant processing) in removal of the cationic dyes Methylene Blue, Crystal Violet and Rhodamine B from aqueous solution was studied in a batch system. The effect of contact time, pH and temperature on dye removal was investigated. An increase in pH from 2 to 10 was accompanied by an increase in the amount of dye adsorbed. The equilibrium sorption data fitted to the Langmuir, Freundlich and Langmuir–Freundlich equations were investigated. The Langmuir–Freundlich isotherm exhibited the best fit with the experimental data and the maximum adsorption capacities at room temperature being 211.5, 89.5 and 69.4 for Rhodamine B, Methylene Blue and Crystal Violet, respectively. The kinetic sorption was evaluated by the pseudo-first-order, pseudo-second-order and intraparticle diffusion models. It was observed that sorption follows the pseudo-second-order kinetic model. The thermodynamic parameters for the sorption process were also determined. The spontaneous and endothermic nature of adsorption was obtained based on the negative value of free energy (ΔG) and the positive value of enthalpy (ΔH). The results indicate that Jatobá bark could be used as a low-cost material for the removal of cationic dyes from wastewater. Note de contenu : - EXPERIMENTAL : Material - Methods
- RESULTS AND DISCUSSION : Adsorbent characteristics - Effect of pH solution on dye adsorption - Effect of dosage - Adsorption isotherm - Adsorption kinetics - Thermodynamic and kinetic parameters - Simulated and real wastewater applicationDOI : 10.1111/j.1478-4408.2012.00365.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15123
in COLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 208-217[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 13933 - Périodique Bibliothèque principale Documentaires Disponible The use of nutshell firstly as a natural dye for cotton and wool and then as a natural adsorbent for colour removal of basic dye effluent / Elçin GüneÅŸ in COLORATION TECHNOLOGY, Vol. 133, N° 1 (02/2017)
[article]
Titre : The use of nutshell firstly as a natural dye for cotton and wool and then as a natural adsorbent for colour removal of basic dye effluent Type de document : texte imprimé Auteurs : Elçin Güneş, Auteur ; Riza Atav, Auteur Année de publication : 2017 Article en page(s) : p. 88-93 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Bains de teinture -- Epuration
Colorants -- Adsorption
Colorants végétaux
Coquille de noix
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
Laine
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of this study is to utilise nutshell, which is normally a waste. To this end, in the first part of our study we investigated the usability of nutshell extract solution as a natural dye for the coloration of cotton and wool fabrics. In order to optimise the fastness properties of dyed samples, mordant type was chosen as a variable in experiments and dyeings were carried out at 100 g l?1 extract concentration. After extracting its dye, nutshell was used as adsorbent for colour removal of basic dye effluent. The effect of adsorbent dose, initial dye concentration, and contact time on the adsorption of malachite green (MG) onto nutshell was investigated. Adsorption isotherms and kinetics of MG adsorption onto nutshell were also studied. Note de contenu : - MATERIALS AND METHODS : Experiments related to the use of nutshell as a natural dye - Experiments related to the use of nutshell as a natural adsorbent
- RESULTS AND DISCUSSION : Results related to the use of nutshell as a natural dye - Results related to the use of nutshell as a natural adsorbentDOI : 10.1111/cote.12255 En ligne : https://drive.google.com/file/d/1c0OhJB3ZT-scQy_xDT4pZE8fmXAqgqSH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27895
in COLORATION TECHNOLOGY > Vol. 133, N° 1 (02/2017) . - p. 88-93[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18636 - Périodique Bibliothèque principale Documentaires Disponible Total degradation or environmental experiment ? / C. Brunner in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 37, N° 5/2000 (09-10/2000)
PermalinkTotal dissolved solids management (TDS) in tanneries / A. Sahasranaman in WORLD LEATHER, Vol. 14, N° 7 (11/2001)
PermalinkTraitement biologique des effluents / Jean-François Courtin in L'INDUSTRIE TEXTILE, N° 1333 (07-08/2001)
PermalinkTraitement par évaporation des effluents / Arnaud Cardineaud in L'INDUSTRIE TEXTILE, N° 1333 (07-08/2001)
PermalinkLes traitements de l'eau / Claude Cardot / Paris : Ellipses (2010)
PermalinkPermalinkTreatment of slaughterhouse wastewater by integrated anaerobic/aerobic bioreactors loaded with immobilized nanoporous activated carbon / P. Maharaja in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 9 (09/2021)
PermalinkTreatment of textile dyeing wastewater by electrocoagulation using Fe and Al electrodes : optimisation of operating parameters using central composite design / Mehmet Kobya in COLORATION TECHNOLOGY, Vol. 130, N° 3 (06/2014)
PermalinkUse of silk hydrolysate in chrome tanning / G. Itirli Aslan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 5 (09-10/2014)
PermalinkVers l'optimisation de nouveaux médias photocatalytiques et la conception de dispositifs de traitement de l'air et de l'eau / Didier Robert in L'ACTUALITE CHIMIQUE, N° 366 (09/2012)
PermalinkPermalinkXVII Congreso de la Union Internationacional de Asociaciones de Técnicos y Quimicos de la Industria del Cuero / Union internationale des sociétés de techniciens et chimistes des industries du cuir / IULTCS (1981)
Permalink