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Removal of chromium(VI) from tannery wastewater by immobilized bacillus fusiformis / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 1 (01-02/2010)
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Titre : Removal of chromium(VI) from tannery wastewater by immobilized bacillus fusiformis Type de document : texte imprimé Auteurs : Changqing Zhao, Auteur ; Zhang Xiaoyan, Auteur ; Song Dan, Auteur ; Zheng Liuxian, Auteur ; Wuyong Chen, Auteur Année de publication : 2010 Article en page(s) : p. 21-25 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Bacille fusiforme
Charbon actif
Chrome hexavalent
Eaux usées -- EpurationIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Bacillus fusiformis was embedded in powdered activated carbon to prepare immobilized granules. Then, the immobilized granules were used to remove Cr(VI) in tannery wastewater at different pH, temperature and initial Cr(VI) concentrations to optimize the process. At the optimum condition, the Cr(VI) in tannery wastewater was treated with the granules with the powdered activated carbon and the Bacillus fusiformis as controls. After treatment, the Bacillus fusiformis in the granules was observed by SEM. The results showed that the removal of Cr(VI) by the immobilized Bacillus fusiformis in the granules was better than eigher using powdered activated carbon or Bacillus fusiformis alone. The SEM images showed that the Bacillus fusiformis in the granules were measured before and after 48 hours' treatment. It was found that both the Cr(VI) in the solution and the granules decreased, but the total chromium was unchanged, which indicated that removal of Cr(Vi) with the granules was mainly as the results of both the adsorption of activated carbon and the chromate reduction of Bacillus fusiformis. The kinetic data of Cr(VI) removed by the immobilized Bacillus fusiformis could be described by the pseudo-second-order rate model. The experiments demonstrated that the immobilized Bacillus fusiformis could be used as a new biomaterial to remove Cr(VI) in tannery wastewater. En ligne : https://drive.google.com/file/d/1TyuDsBJXpktVhYr7oSf0PayX0Uz8ZRJx/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8307
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 94, N° 1 (01-02/2010) . - p. 21-25[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011957 - Périodique Bibliothèque principale Documentaires Disponible Removal of Cr(VI) by emulsion membrane technology / Liu Anjun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)
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Titre : Removal of Cr(VI) by emulsion membrane technology Type de document : texte imprimé Auteurs : Liu Anjun, Auteur ; Ding Shaolan, Auteur ; Zhao Chuanchuan, Auteur ; Ren Huijun, Auteur ; Zhao Quanyong, Auteur Année de publication : 2007 Article en page(s) : p. 52-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome hexavalent
Cuirs et peaux -- Industrie
Déchets industriels -- Elimination
Eaux usées -- Epuration
Emulsification
Extraction (chimie)
Membrane liquide en émulsion
pH -- Mesure
SurfactantsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This article describes our study on the removal of Cr(VI) with the emulsion membrane formed from trioctylamine, secondary capryl alcohol and tributyl phosphate as carriers, Span-80 and Lan-113 as surfactants, and kerosene as the membrane solvent. Further, we have performed an orthogonal experiment regarding the carriers, surfactants for individual use and in combination. We also determined the way in which operational conditions, such as Roi, Rew, the internal and external phase pH values, emulsification mixing speed, time and waste/emulsion mixing rate affected the removal rate of Cr(VI). Note de contenu : - EXPERIMENTAL PROCEDURES : Reagents, instruments and equipment
- RESULTS AND DISCUSSION : Selection and determination of the emulsion liquid membrane system - Carriers - Extracting mechanism of extractants - Surfactant concentration and types - Liquid volume rate in emulsion liquid (Voil/Vwi) - oil internal ratio Roi - Emulsification stirring speed and time - Extraction stirring/rotating speed - Extraction time - External phase pH values - NaOH concentration of internal water phase - Vw/o/Vwe -
- Table 1 : L27(313) orthoganol experimental design - the factors and levels table
- Table 2 : L18(37) orthoganol experimental design - the factors and levels table
- Table 3 : L25(56) orthoganol experimental design - the factors and levels tableEn ligne : This article describes our study on the removal of Cr(VI) with the emulsion memb [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39033
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 52-58[article]Removal of reactive dyes from wastewater by acrylate polymer beads bearing amino groups : isotherm and kinetic studies in COLORATION TECHNOLOGY, Vol. 129, N° 2 (04/2013)
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Titre : Removal of reactive dyes from wastewater by acrylate polymer beads bearing amino groups : isotherm and kinetic studies Type de document : texte imprimé Année de publication : 2013 Article en page(s) : p. 114-124 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amines Une amine est un composé organique dérivé de l'ammoniac dont certains hydrogènes ont été remplacés par un groupement carboné. Si l'un des carbones liés à l'atome d'azote fait partie d'un groupement carbonyle, la molécule appartient à la famille des amides. Découvertes en 1849, par Wurtz les amines furent initialement appelées alcaloïdes artificiels.
On parle d'amine primaire, secondaire ou tertiaire selon que l'on a un, deux ou trois hydrogènes substitués.
Par exemple, la triméthylamine est une amine tertiaire, de formule N(CH3)3.
Typiquement, les amines sont obtenues par alkylation d'amines de rang inférieur. En alkylant l'ammoniac, on obtient des amines primaires, qui peuvent être alkylées en amines secondaires puis amines tertiaires. L'alkylation de ces dernières permet d'obtenir des sels d'ammonium quaternaire.
D'autre méthodes existent : 1. Les amines primaires peuvent être obtenues par réduction d'un groupement azoture, 2. Les amines peuvent aussi être obtenues par la réduction d'un amide, à l'aide d'un hydrure, 3. L'amination réductrice permet l'obtention d'amines substituées à partir de composés carbonylés (aldéhydes ou cétones), 4. Les amines primaires peuvent être obtenues par la réaction de Gabriel.
Colorants -- Adsorption
Colorants réactifs
Déchets industriels -- Elimination
Eaux usées -- Epuration
Polyacrylates
PolyméthacrylatesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of this study was to prepare a novel resin for the removal of reactive dyes from aqueous media. To prepare the resin, poly(2-hydroxyethyl methacrylate/ethylene glycol dimethacrylate) beads were grafted with poly(glycidyl methacrylate) by surface-initiated atom transfer radical polymerisation. Epoxy groups of the grafted polymer were modified with tris(2-aminoethyl)amine ligand. The modified resin was characterised by swelling studies, FT-IR and SEM. Three different reactive dyes were selected (CI Reactive Brown 10, CI Reactive Red 120 and CI Reactive Green 5) and used in the removal studies. The effects of pH, temperature, ionic strength and initial dye concentration on the adsorption capacity of the resin were investigated. The adsorption capacity of the resin for Reactive Brown 10, Reactive Red 120 and Reactive Green 5 was 0.029 ± 0.010, 0.032 ± 0.0019 and 0.042 ± 0.0013 mmol/g resin (34.1 ± 1.2, 47.6 ± 2.3 and 69.3 ± 1.7 mg/g resin) respectively. The equilibrium adsorption data were analysed by Langmuir, Dubinin–Radushkevich, Freundlich and Temkin isotherm models. A good fit was found between the Langmuir isotherm and data for the three dyes on resin. The adsorption kinetic data were modelled using pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic equations. It was found that the pseudo-second-order equation could describe the adsorption kinetics. The results indicated that the modified resin is an attractive alternative for removing reactive dyes from wastewater. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of p(HEMA/EGDMA) beads - Grafting of p(GMA) brushes by ATRP onto p(HEMA/EGDMA) beads - Attachment of tris(2-aminoethyl)amine ligand to p(GMA)-grafted beads - Reactive dye removal studies - Elution and regeneration of the sorbent - Characterisation of the poly(HEAM/EGDMA-g-GMA) resin
- RESULTS AND DISCUSSION : Characterisation of poly(HEAM/EGDMA-g-GMA)-TAEA - Adsorption equilibrium time - Effect of pH on adsorption efficiency of resin - Effect of ionic strength - Effect on initial dye concentration - Adsorption isotherm models - Evaluation of equilibrium time and kinetic models - Desorption and reusability studiesDOI : 10.1111/cote.12012 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12012/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18050
in COLORATION TECHNOLOGY > Vol. 129, N° 2 (04/2013) . - p. 114-124[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14906 - Périodique Bibliothèque principale Documentaires Disponible Removal of vegetable extracts by the use of activated clays / Agusti Marsal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 6 (11-12/2003)
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Titre : Removal of vegetable extracts by the use of activated clays Type de document : texte imprimé Auteurs : Agusti Marsal, Auteur ; A. Garcia-Espantaleon, Auteur ; I. Ribosa, Auteur ; J. Cot, Auteur ; Albert M. Manich, Auteur Année de publication : 2003 Article en page(s) : p. 219-222 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
BentoniteLa bentonite est une argile colloïdale dont le nom vient de Fort Benton dans le Wyoming aux États-Unis. Connue aussi sous le terme de terre à foulon, elle peut être considérée comme une smectite, étant essentiellement constituée de montmorillonite (Na,Ca)0.33(Al,Mg)2Si4O10(OH)2·(H2O)n.(80 %) et d'argile ce qui explique sa capacité de rétention d'eau. On trouve également d'autres minéraux comme le quartz, le mica, le feldspath, la pyrite ou la calcite. Les gisements de bentonites sont d'origines volcanique et hydrothermale.
Elle possède diverses propriétés. Notamment, elle absorbe les protéines, réduit l’activité des enzymes. Les boues bentonitiques (recelant une fraction de bentonite) sont utilisées dans les travaux de terrassement, de parois moulées, du fait de leur capacité à laisser la place rapidement et facilement aux bétons coulés à leur place. Elles peuvent être ajoutées au compost.
Le numéro CAS de la bentonite est 1302-78-9.
Il existe deux types de bentonites :
La bentonite à base de sodium, qui augmente de volume lorsqu'elle est humide et qui peut absorber plusieurs fois sa masse en eau. Cette propriété est mise en valeur dans les mastics pour l'enfouissement de matières polluantes dans le sol. Elle est utilisée dans les puits de forage de pétrole et la recherche géothermique.
La bentonite à base de calcium (pascalite), qui ne possède pas ces propriétés de gonflement, a des applications parapharmaceutiques dont les résultats restent à prouver, notamment dans le domaine du système digestif. Des tribus indigènes d'Amérique du Sud, d'Afrique et d'Australie ont longtemps employé l'argile de bentonite pour cet usage.
En raison de ses fonctionnalités rhéologiques, la bentonite a un comportement thixotrope. Des petites quantités de bentonite en solution aqueuse forment un mélange visqueux, dont la viscosité baisse lorsque l'effort mécanique qui lui est appliqué augmente.
Cuirs et peaux -- Industrie
Déchets industriels -- Elimination
Eaux usées -- Epuration
Extraits de plantes
Mimosa et constituantsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study seeks to devise a method that allows us to reduce the pollution parameters of the waste waters produced during the transformation of hides into leather. Tanning with vegetable extracts contributes to the COD values of the resulting waste waters and thus we have investigated the possibility of eliminating vegetable extracts by means of adsorption with bentonite. The influence of the acid activation level of the bentonite on its adsorption capacity has also been studied.
Natural bentonite activated with sulphuric acid 0.5 N is the most suitable adsorbent for removing mimosa extract. The isotherm of adsorption of mimosa extract with bentonite seems to be of the L type in accordance with the classification given by Giles. This mechanism implies that as more sites in the substrate are filled, it becomes increasingly difficult for a new solute molecule to find a vacant site. The adsorption process gives rise to a diminution of the COD values as expected.Note de contenu : - EXPERIMENTAL PROCEDURE :
- Adsorbents - Vegetable extracts
- Adsorption capacity of bentonite as a function of its acid activation level
- Adsorption isotherm of mimosa extract
- Adsorption of mimosa extract on bentonite and its effect on the Chemical Oxygen Demand (COD)
- RESULTS :
- Adsorption capacity of bentonite as a function of its acid activation level
- Adsorption isotherm of mimosa extract
- Adsorption of mimosa extract on bentonite and its effect on the Chemical Oxygen Demand (COD)
- Table 1 : Parameters of the Freundlich equation for the adsorption of mimosa extract
- Table 2 : Parameters of the Langmuir equation for the adsorption of mimosa extract
- Table 3 : COD values of mimosa extract solutions before/after adsorption on activated bentonite expressed in mg O2/l and in mg O2/mg product, and percentage of mimosa extract removed (R)En ligne : https://drive.google.com/file/d/18CMwG75r4W3aquf5I_6dm3GtcLxMhYR4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39704
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 6 (11-12/2003) . - p. 219-222[article]A rescue of colors from dye-wastewater / Saloana Santina Gomes Santos in L'ACTUALITE CHIMIQUE, N° 444-445 (10-11/2019)
[article]
Titre : A rescue of colors from dye-wastewater : a rescue of colors from dye-wastewater Type de document : texte imprimé Auteurs : Saloana Santina Gomes Santos, Auteur ; Francisco Rodrigues, Auteur ; Maria Gardênnia Fonseca, Auteur Année de publication : 2019 Article en page(s) : p. 22-28 Note générale : Bibliogr. Langues : Français (fre) Catégories : Argile
Colorants -- Adsorption
Eaux usées -- Décontamination
Eaux usées -- Epuration
Eaux usées -- Recyclage
Eaux usées -- Teneur en colorants
Montmorillonite
Photostabilité
PigmentsIndex. décimale : 667.2 Colorants et pigments Résumé : Contaminants such as dyes unproperly discharged in the environment are a big problem to overcome. Some technologies have been developed and applied for dye-wastewater treatment before its disposal in the waterbodies. Among them, adsorption is highlighted and a plenty of adsorbents are proposed in the literature.
This paper presents some clay minerals-based adsorbents applied for the rescue of colors from dye-wastewater, and the development of new pigments for artworks as an alternative to reuse the dyed adsorbents.Note de contenu : - Dyestuffs and the color paradox
- How to remove color from dye-wastewater ?
- The adsorption approaches
- How to characterize the adsorbents ?
- Custom-made clay-based solids for dye removal
- What about the adsorbents after dye removal ? How to discharge them ?
- Dyed adsorbent as new pigments
- Towards new stable and environmentally friendly pigments
- Fig. 1 : Treatment methods for the removal of dyes from wastewater effluent
- Fig. 2 :Adsorption process with adsorbent regeneration step for dyed-water decoloring
- Fig. 3 : Main analytical techniques for characterization of adsorbents
- Fig. 4 : Effect of the time in the dye removal for KSF-montmorillonite C12NH3+ hybrid
- Fig. 5 : KSF-montmorillonite/chitosan beads as adsorbent for Remazol blue dye
- Fig. 6 : Color variation of the hybrids as a function of the exchanged cation
- Fig. 7 : Solid pigments based on alizerin and carminic acid adsorbed onto Al-pillared clay and Ti-pillared clay and oil paint formulations based on these pigments before and after light irradiation
- Fig. 8 : Color of the pigments before and after 400 h under light exposure. Representation ageing of pigments followed by color change observations
- Table 1 : Some classification dyes based on chemical structure
- Table 2 : Examples of clay and clay-based solids as adsorbents for Remazol blue dyePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33040
in L'ACTUALITE CHIMIQUE > N° 444-445 (10-11/2019) . - p. 22-28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21257 - Périodique Bibliothèque principale Documentaires Disponible Research recap of membrane technology for tannery wastewater treatment : a review / Fu Yang in COLLAGEN AND LEATHER, Vol. 5 (2023)
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PermalinkSeparation of a nanofiller from tannery effluents / Anita Przepiórkowska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 1 (01-02/2006)
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PermalinkSonophotocatalytic treatment of methyl orange dye and real textile effluent using synthesised nano-zinc oxide / Ravindran Hemapriyamvadha in COLORATION TECHNOLOGY, Vol. 131, N° 2 (04/2015)
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PermalinkSpent green tea leaves for decolourisation of raw textile industry wastewater / Chih-Huang Weng in COLORATION TECHNOLOGY, Vol. 129, N° 4 (08/2013)
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PermalinkStation automatisée de traitement des rejets chez Gordon-Choisy (tannerie) / Nathalie Frémont in CTC ENTREPRISES, Vol. 19, N° 9 (11/2003)
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PermalinkA study of photocatalytic degradation of dyeing and printing wastewater by ZnO@zeolitic imidazolate framework (ZIF)-8 / Mu Hongjun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 5 (09-10/2019)
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PermalinkPermalinkSynthesis and evaluation of a novel shavings-based cationic flocculant / Dai Chunji in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 2 (03-04/2018)
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PermalinkTannases and other fungal enzymes applicable to the transformation of tannins and their potential for bioremediation of effluents from the leather industry / Lorena V. Cortizo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 1 (01-02/2022)
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PermalinkTannery effluent problems / K. W. Pepper in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXI (Année 1966)
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PermalinkTannery effluent treatment updates / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 62 (11-12/2023)
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PermalinkTetraselmis sp. isolated from a microalgae consortium for tannery wastewater treatment / Aline de Cassia Campos Pena in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 5 (09-10/2018)
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PermalinkThe adsorption performance of Vat Scarlet R on natural superfine needle down particles / Fengxiang Chen in COLORATION TECHNOLOGY, Vol. 132, N° 1 (02/2016)
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PermalinkThe development of biodegradable surfactants as an answer to a water pollution problem / Edmund C. Steinle in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXI (Année 1966)
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PermalinkThe effect of salinity on the the treatment of tannery effluents and sludges / Richard Daniels in WORLD LEATHER, Vol. 18, N° 7 (11/2005)
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PermalinkThe effects of heat treatment temperatures on photocatalytic activity of cobalt ferrite nanoparticles synthesised by microwave-assisted combustion method / Ibrahim Hakki Karakas in COLORATION TECHNOLOGY, Vol. 139, N° 3 (06/2023)
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PermalinkThe elimination of effluent from liming, acid/salt pickling and the chromium tanning processes / Richard Daniels in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)
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PermalinkThe 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)
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PermalinkThe sonochemical decolorisation of textile azo dye CI Reactive Orange 127 / Celalettin Özdemir in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
PermalinkThe 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)
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PermalinkThe use of Jatobá bark for removal of cationic dyes / Carla A. Demarchi in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)
PermalinkThe 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 Güneş in COLORATION TECHNOLOGY, Vol. 133, N° 1 (02/2017)
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PermalinkTotal 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)
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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)
PermalinkPermalinkPermalinkTreatment 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)
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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)
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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)
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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)
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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)
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