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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
in COLORATION TECHNOLOGY > Vol. 132, N° 5 (10/2016) . - p. 421-430[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18353 - Périodique Bibliothèque principale Documentaires Disponible Algae development in tannery wastewater treatment tanks / Sreeparna Das in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)
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Titre : Algae development in tannery wastewater treatment tanks Type de document : texte imprimé Auteurs : Sreeparna Das, Auteur ; Debojyoti Das, Auteur ; Sudin Pal, Auteur ; Shuvadip Adhikari, Auteur ; Sanjoy Chakraorty, Auteur ; Subhra Kumar Mukhopadhyay, Auteur Année de publication : 2021 Article en page(s) : p. 41-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Algues unicellulaires
Caractérisation
Cuirs et peaux -- Industrie
Eaux usées -- Analyse
Phytoplancton
StatistiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : We have carried out this study to characterise the physico-chemical properties of the tannery effluents at different treatment tanks and to identify if any aerobic planktonic forms are thriving in the toxic effluents. Pearson correlation matrix suggests significant positive correlation between pH and TSS, acidity, Pb and Cr. A significant positive correlation between TDS, EC and salinity is also recorded. The concentrations of six metals, namely, Cr, Pb, Cu, Zn, Mn and Fe are well within the safe limits. Principal Component Analysis, a dimension-reduction tool, shows that out of seventeen physico-chemical variables, fourteen variables contain most of the information to influence the biota. Canonical Correspondence Analysis plot strongly suggests that the physico-chemical factors significantly influenced the occurrence of phytoplankton in treatment sites of CETPs. This work addressed the basic study questions, whether any oxygen liberating life-foret is thriving in the treatment tanks that could be used in biological amelioration of toxic tannery effluents! We record the occurrence of three species of Cyanophyceae, one species under Chlorophyceae, two under Euglenophyceae and a single Bacillariophyceae in the treatment tanks extending an opportunity for further researches on the efficiency of these algal species in ameliorating different toxicants in the tannery wastewaters. Note de contenu : - Study area and period
- Physico-chemical analyses
- Phytoplankton enumeration
- Statistical analyses
- Table 1 : Physico-chemical conditions (mean ± SD) of wastewater in different treatment tanks of CETPs at CLC, Kolkata
- Table 2 : Pearson correlation matrixEn ligne : https://drive.google.com/file/d/1iKQ6n3GByceKzivm4-0zO6tciwrK8O4s/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35316
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 1 (01-02/2021) . - p. 41-48[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22599 - Périodique Bibliothèque principale Documentaires Disponible Alkylphénols et rejets de la filière traitement de surface / Grégorio Crini in GALVANO ORGANO, N° 848 (06-07/2016)
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Titre : Alkylphénols et rejets de la filière traitement de surface Type de document : texte imprimé Auteurs : Grégorio Crini, Auteur ; Elise Euvrard, Auteur ; Coline Druart, Auteur ; Nadia Morin-Crini, Auteur ; Céline Lagarrigue, Auteur ; Sophie Gavoille, Auteur Année de publication : 2016 Article en page(s) : p. 44-46 Langues : Français (fre) Catégories : Alkylphénols
Eaux usées -- Analyse
Industries chimiques -- Aspect de l'environnement
Substances dangereuses -- Législation -- Pays de l'Union Européenne
Traitements de surface -- Aspect de l'environnementIndex. décimale : 628.5 Pollution et hygiène industrielle Résumé : Depuis 2013, un partenariat original s'est tissé autour du projet de recherche Nirhofex, entre chercheurs, industriels et partenaires institutionnels et financiers, afin d'identifier les substances chimiques et lutter contre leur présence dans les rejets industriels. Les résultats sont prometteurs et surprenants. Note de contenu : - Chimie des APs
- APs et environnement
- APs et réglementation
- Analyse des APs
- Origine et traitement des APsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26696
in GALVANO ORGANO > N° 848 (06-07/2016) . - p. 44-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18194 - Périodique Bibliothèque principale Documentaires Disponible Aluminum tanning of hide powder and skin pieces under microwave irradiation / Yue Liu in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
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Titre : Aluminum tanning of hide powder and skin pieces under microwave irradiation Type de document : texte imprimé Auteurs : Yue Liu, Auteur ; Bin Song, Auteur ; Jinwei Zhang, Auteur ; Carmen Gaidau, Auteur ; Haibin Gu, Auteur Année de publication : 2020 Article en page(s) : 13 p. 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
Cuirs et peaux
Cuirs et peaux de chèvres
Eaux usées -- Analyse
Fourier, Spectroscopie infrarouge à transformée de
Micro-ondes
Microscopie électronique à balayage
Poudre de peaux
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
ThermogravimétrieIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The application and mechanism study of microwave irradiation in traditional industries have attracted considerable attention owing to the unique thermal and athermal effects that could lead to unexpected benefits in high-efficiency and clean production. Herein, we report the investigation of the aluminum tanning under microwave irradiation upon using hide powder and skin pieces, respectively, as simulants of real hide or skin. The aluminum tanning process and the tanned products under microwave heating (MWH) were studied and compared with those of conventional water bath heating (WBH) as the controls. For the tanning system of hide powder, the tanning effluents were analyzed in terms of pH, conductivity, dielectric constant and aluminum content, and the tanned powder was investigated by differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, and FT-IR spectroscopy. For the skin piece system, the pH and aluminum content of tanning effluents were also determined, and at the same time, DSC, TG, SEM, FT-IR and shrinkage temperature were used to illustrate the actions of microwaves on the structure and properties of the tanned pieces. The results show that aluminum reactivity in the penetration and binding process of collagen fibers in hide powder and skin pieces improved using microwave treatment. The residual aluminum content was greatly reduced by microwave heating action, and the increased amount of aluminum with evener distribution was observed in the tanned products. Microwave irradiation also resulted in the tanned products with better thermal stability and thermal decomposition resistance. This work further promotes application of microwave treatments for aluminum-based tanning in leather industry. Note de contenu : - EXPERIMENTAL : Materials - Aluminum tanning of hide powder - Aluminum tanning of goatskin pieces - Analysis of tanning effluent, tanned hide powder and skin pieces
- RESULTS AND DISCUSSION : Effect of microwave irradiation on the aluminum tanning of hide powder - Effect of microwave irradiation on the aluminum tanning of skin pieces
- Table 1 : Analysis for the tanning effluents of hide powder under different heating methods
- Table 2 : TG analysis of tanned hide powder obtained under different heating methodsDOI : https://doi.org/10.1186/s42825-020-00037-w En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00037-w.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37456
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 2 (Année 2020) . - 13 p.[article]Ammonia nitrogen in tannery wastewater : distribution, origin and prevention / Yanan Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 2 (02/2012)
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Titre : Ammonia nitrogen in tannery wastewater : distribution, origin and prevention Type de document : texte imprimé Auteurs : Yanan Wang, Auteur ; Yunhang Zeng, Auteur ; Xiaowei Chai, Auteur ; Xuepin Liao, Auteur ; Qiang He, Auteur ; Bi Shi, Auteur Année de publication : 2012 Article en page(s) : p. 40-49 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Eaux usées -- Analyse
Eaux usées -- Teneur en azote ammoniacal
Travail de rivière (cuir)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Tannery wastewater usually contains a high content of ammonia nitrogen (NH3-N), which increases the difficulty of wastewater treatment. The objective of this work is to investigate the distribution of NH3-N in wastewaters from beamhouse processes and analyze the origin of NH3-N in each operation, so that the strategies that can reduce NH3-N at the origin could be suggested. Not surprisingly, the results demonstrate that NH3-N mainly concentrates in deliming and bating wastewaters due to the addition of ammonium salts in these two operations. This problem can be solved by using non-ammonia deliming and bating agents. A small quantity of NH3-N arises from washing and soaking processes because of decomposition of proteins by microorganisms. But the NH3-N in washing and soaking wastewaters may considerably increase when skins are badly preserved or the microorganisms in soaking float are not properly inhibited. Therefore, the effective antibacterial measures are important to diminish the production of NH3-N in beamhouse processes. As for unhairing/liming process, NH3-N in wastewater is mainly originated from hydrolysis of proteins, such as keratin and collagen, by strong alkali. Hair-saving unhairing and pelt swelling under milder conditions favor the decrease of NH3-N discharge. In fact, the amount of organic nitrogen released from washing, soaking and liming processes is much more than NH3-N. The experimental results indicate that the organic nitrogen mainly results from non-collagen proteins and their hydrolysates. This means the discharge of organic nitrogen is difficult to be avoided, and it may constitute a threat to end-of-pipe treatment of NH3-N. Note de contenu : - EXPERIMENTAL : Materials - Determination of NH3-N in beamhouse wastewaters - Determination of NH3- content in leather chemicals - Effect of curing time on NH3-N concentration in washing wastewater - Effect of soaking time on NH3-N concentration in soaking wastewater - Analysis of origin of NH3-N in unhairing/liming wastewater - Effect of reliming time on NH3-N concentration in reliming wastewater - Determination of TN and hydroxyproline in beamhouse wastewaters - Analysis of origin of TN in unhairing/liming wastewater - Analysis of origin of TN in deliming wastewater - Analytical methods : Ammonia nitrogen - Total nitrogen - Hydroxyproline
- RESULTS AND DISCUSSION : Distribution of NH3-N in wastewaters of pig skin beamhouse processes - Distribution of NH3-N in wastewaters of cattle hide beamhouse processes - Origin of NH3-N in initial washing and soaking wastewaters - Origin of NH3-N in unhairing/liming wastewater - Origin of NH3-N in reliming wastewater - Relationship between TN and NH3-N in beamhouse wastewatersEn ligne : https://drive.google.com/file/d/12alRCA2Lr5eBz6sPv3YF4X4vui_ZBxhV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13569
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 2 (02/2012) . - p. 40-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13693 - Périodique Bibliothèque principale Documentaires Disponible 13824 - Périodique Bibliothèque principale Documentaires Disponible Ammonia-reduced deliming using glycolic acid and EDTA / Murshid Jaman Chowdhury in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 7 (07/2018)
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PermalinkAn eco-friendly method of gelatin preparation based on enzymatic dehairing and lime-free swelling process / Ding Xiaoliang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 3 (05-06/2021)
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PermalinkAn examination of several chrome tannages and their effect on chrome exhaustion / Vetaut Goniprow in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIV (Année 1979)
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PermalinkAn integrated eco-friendly tanning method for the manufacture of upper leathers from goatskins / Subramanian Saravanabhavan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)
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PermalinkAnalyses of nitrogen metabolism functional microbial community in aerobic tanks of hydrolysis acidification and multistage aerobic process for tannery wastewater / Ding Shaolan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 12 (12/2018)
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PermalinkAssessment of water management in tanneries / Patrice Monteiro de Aquim in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 6 (11-12/2010)
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PermalinkAssociated use of enzymes and hydrogen peroxide for cowhide hair removal / Eliane Andrioli in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 2 (02/2014)
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PermalinkAuxiliary agents with non-swelling capacity used in pickling-tanning processes - Part 3 / Agusti Marsal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 5 (09-10/2004)
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PermalinkBenzidines in tannery dye wastewater-oxidative degradation by chlorine dioxide / Cao Xiangyu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 4 (07-08/2007)
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PermalinkBio-technology for improved product quality / Claire Shrewsbury in WORLD LEATHER, Vol. 15, N° 1 (02-03/2002)
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PermalinkBiodegradation of alcohol ethoxylates by bacterial consortium from industrial wastewater / Dorota Nowicka in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 50, N° 1 (01-02/2013)
PermalinkBiodegradation of lecithin-based fatliquor : optimization of food to microbes ratio and residence time / Chitra Kalyanaraman in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 1 (01/2013)
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PermalinkPermalinkCharacterization of raw wastewater from tanneries / Mariliz Gutterres in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 6 (11-12/2015)
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PermalinkA chrome-free combination tanning strategy : based on silicic acid and plant tannin / Zetian Zhang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
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