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Tannery wastewater treatment : conventional and promising processes, an updated 20-year review / Jun Zhao in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
[article]
Titre : Tannery wastewater treatment : conventional and promising processes, an updated 20-year review Type de document : texte imprimé Auteurs : Jun Zhao, Auteur ; Qinglian Wu, Auteur ; Yuling Tang, Auteur ; Jianfei Zhou, Auteur ; Hongguang Guo, Auteur Année de publication : 2022 Article en page(s) : 22 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Coagulation
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eau -- Epuration -- Traitement biologique
Eaux usées -- Analyse
Eaux usées -- Décontamination
Eaux usées -- Recyclage
Electrochimie
Filtration
Floculation
Oxydation
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Mismanagement of various wastes especially waste water produced by tanning processes has caused serious environmental problems and ultimately impaired human health. Constant efforts have been making to alleviate the pollution of tannery wastewater (TWW), yet terminal treatment still takes dominance. In this review, research on TWW treatment from 2000 to 2021 was summarized, and main methods such as coagulation and flocculation, adsorption, biological treatment, membrane filtration, advanced oxidation process were briefly discussed. More detailed introduction was given to the method of electrochemical treatment since it has excellent performance such as environmental friendliness and high efficiency, hence attracting more and more research attention in recent years. In view of the harsh physi-chemical conditions of TWW, integrated or combined treatment methods are accordingly recommended with better performance and multi-function, however comprehensive studies on optimization of methods combination and cost-effectiveness are needed. The certain issues that the residue Cr in treatment sludge and high salinity in effluent still remain were put forward in this work and potential solutions were provided. Moreover, this review proposed the perspective that realizing multi-function, recycling, and intensification should be the developing direction for future TWW treatment. This review is expected to provide a general guide for researchers who aspire to ameliorate TWW pollution problems and understand various methods utilized in this field. Note de contenu : - CHARACTERISTICS OF TANNERY WASTEWATER
- TREATMENT FOR TANNERY WASTEWATER : Flocculation and coagulation - Biological treatment - Membrane filtration - Advanced oxidation processes - Electrochemical treatment - Adsorption - Integrated methods
- PROBLEMS TO BE SOLVED AND POTENTIAL SOLUTIONS
- TWW TREATMENT FOR THE FUTURE
- Table 1 Direct discharge standard of treated TWW in different countries
- Table 2 Qualitative comparisons of all TWW treatment methods
- Table 3 Selected reports (2010–2020) related to combined/integrated methods to treat real or synthetic TWWDOI : https://doi.org/10.1186/s42825-022-00082-7 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-022-00082-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37577
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 4 (Année 2022) . - 22 p.[article]Tetraselmis 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)
[article]
Titre : Tetraselmis sp. isolated from a microalgae consortium for tannery wastewater treatment Type de document : texte imprimé Auteurs : Aline de Cassia Campos Pena, Auteur ; Livia de Souza Schaumlöffel, Auteur ; Luciane Ferreira Trierweiler, Auteur ; Mariliz Gutterres, Auteur Année de publication : 2018 Article en page(s) : p. 258-261 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Algues unicellulaires
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eaux usées -- Analyse
Eaux usées -- Epuration
Eaux usées -- Recyclage
TetraselmisIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Microalgae have been the subject of several studies in the wastewater treatment field due to their ability for the removal of various nutrients, organic load and to be a clean and economical way to treat pollutants. The effluents from leather finishing processing steps contain chemical pollutants due to the use of dyes, surfactants, toxic metals, emulsifying agents, retanning agents, oils, pigments, resins, among other chemicals added. In this work, the isolated microalgae Tetraselmis sp. was obtained from a microalgae consortium and evaluated for their ability for the treatment effluents collected from a tannery. The growth of microalgae biomass in these effluents in mixotrophic cultivation was analysed, as well as, the capacity of removal of total nitrogen (TN), total organic carbon (TOC), total carbon (TC), inorganic carbon (IC), ammonia (N-NH3), phosphorus (P-PO4), chemical oxygen demand (COD) and biological oxygen demand (BOD). The removal values observed for the 50R50T (50% raw/50% treated effluent) and 75R25T (75% raw/25% treated effluent) concentrations were 96.59% and 99.81% for phosphorus, 99.90% and 89.2% for ammoniacal nitrogen, 89.06% and 54.78% for TN, 40.46% and 43.54% for COD, 59.24% and 57.90% for TOC, 32.70% and 44.73% for BOD, respectively. The microalgae Tetraselmis sp. showed notable growth in mixotrophic cultivation, and the efficient removal of the controlled parameters indicate an enormous potential for application in tannery wastewater treatment. Note de contenu : - Isolation of microalgae from a consortium
- Wastewater treatment experiments
- Wastewater analyses
- Fig. 1 : Optical microscopy of the microalgae consortium and isolated microalgae
- Fig. 2 : Growth of the microalgae Tetraselmis sp. in along cultivation in composite effluents
- Fig. 3 : Removal of total nitrogen along Tetraselmis sp. cultivation in composite effluents
- Fig. 4 : Removal of ammonia along Tetraselmis sp. cultivation in composite effluents
- Fig. 5 : Phosphorus removal along Tetraselmis sp. cultivation in composite effluents
- Fig. 6 : Carbon removal along Tetraselmis sp. cultivaiton in composite effluent (50R50T)
- Fig. 7 : Carbon removal along Tetraselmis sp. cultivation in composite effluent (75R25T)En ligne : https://drive.google.com/file/d/1p03lpq59XuihPsXYRjVq6r_HVpYvfSfB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31112
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 5 (09-10/2018) . - p. 258-261[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20281 - Périodique Bibliothèque principale Documentaires Disponible The thermal and non-thermal effects of microwave in the chrome tanning process / Jinwei Zhang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 2 (03-04/2020)
[article]
Titre : The thermal and non-thermal effects of microwave in the chrome tanning process Type de document : texte imprimé Auteurs : Jinwei Zhang, Auteur ; Wuyong Chen, Auteur ; Carmen Gaidau, Auteur Année de publication : 2020 Article en page(s) : p. 98-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Cuir -- Teneur en chrome trivalent
Eaux usées -- Analyse
Industrie -- Pollution -- Lutte contre
Micro-ondes
PermittivitéLa permittivité, plus précisément permittivité diélectrique, est une propriété physique qui décrit la réponse d'un milieu donné à un champ électrique appliqué.
C'est une propriété macroscopique, essentielle de l'électrostatique, ainsi que de l‘électrodynamique des milieux continus. Elle intervient dans de nombreux domaines, notamment dans l’étude de la propagation des ondes électromagnétiques, et en particulier la lumière visible et les ondes utilisées en radiodiffusion.
On la retrouve donc en optique, via l'indice de réfraction. Les lois gérant la réfraction et la réflexion de la lumière y font appel.
Poudre de cuir
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Microwave power is an effective and energy-saving heating resource. When microwave power is used to assist in leather making, the leather always shows better performances. In order to apply microwave in chrome tanning further and explain the detailed effects of microwave in the process, the hide powder chrome tanning process was warmed by water bath heating (WB) and microwave irradiation (MW). After tanning, the pH, conductivity, dielectric constant and chrome content of tanning effluents were tested. Meanwhile, DSC, TG, FTIR and XPS were used to determine the thermal behaviours, collagen conformation and product structure of chrome tanned hide powders.
Through comparing the similarities and differences between WB and MW samples, the results showed that the pH and chrome content of WB effluents were larger than those from MW while the conductivity and dielectric constants were smaller. On aspects of chrome-tanned hide powders, MW samples had higher Cr203 content, denaturation temperature and enthalpy as well as better thermal resistance. However, the collagen's fundamental structure, conformation and pattern of combination between collagen and chromium for MW samples were almost same as for WB. In sum, both a thermal effect and a non-thermal effect existed when microwave power was used as heating resource in chrome tanning, and both promoted the tanning process and other effects together.
The higher chrome exhaustion, better thermal behaviour of products was achieved under microwave irradiation and caused by non-thermal effect without any negative effect on leather structure or changes to the tanning mechanism. The achievements in the work might be an important hint and reference for applying microwave power in chrome tanning to diminish pollution and in improving leather properties.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Tanning processes - Determination methods - Hide powder chrome content measurement
- RESULTS AND DISCUSSION : Influence of microwave on tanning effluent - Influence of microwave on chrome-tanned hide powderEn ligne : https://drive.google.com/file/d/1WSTjkaUG2PimwPislygIh4SLxodWiJVK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33915
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 2 (03-04/2020) . - p. 98-104[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21654 - Périodique Bibliothèque principale Documentaires Disponible The use of trisodium nitrilo triacetate in the pad–steam dyeing of cotton with reactive dyes / Awais Khatri in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)
[article]
Titre : The use of trisodium nitrilo triacetate in the pad–steam dyeing of cotton with reactive dyes Type de document : texte imprimé Auteurs : Awais Khatri, Auteur ; Rajiv Padhye, Auteur ; Max White, Auteur Année de publication : 2013 Article en page(s) : p. 76-81 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bases (chimie)
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 -- Analyse
Electrolytes
Essais dynamiques
Résistance au lavage
Teinture -- Fibres textiles
Traction (mécanique)
Trisodium nitrilotriacétateIndex. décimale : 667.3 Teinture et impression des tissus Résumé : This paper presents results on the use of trisodium nitrilo triacetate, a biodegradable alkaline organic salt, for pad–steam dyeing of cotton with reactive dyes as a replacement for conventionally used inorganic electrolyte and alkali. Two widely used dyes, CI Reactive Red 147 and CI Reactive Blue 250, were used in the study. The colour yield, dye fixation and ultimate colour fastness achieved by using trisodium nitrilo triacetate were closely comparable with those obtained by using inorganic electrolyte and alkali. The tensile breaking force and wrinkle recovery angle of the dyed fabrics were also measured and were slightly improved when using organic salt. Additionally, the dyeing effluent showed reductions in total dissolved solids content with trisodium nitrilo triacetate. Note de contenu : - EXPERIMENTAL : Cotton fabric - Dyes and chemicals - Pad-steam dyeing - Washing - Colour yield and dye fixation - Colour fastness and tensile testing of dyed fabrics - Effluent analysis - The pH of dyed fabric after steamming
- RESULTS AND DISCUSSION : Effect of inorganic electrolyte concentration - Effect of inorganic alkali concentration - Effect of trisodium NTA concentration - Trisodium NTA as an alkali for dye fixation - Effect of steaming time using trisodium NTA - Comparison of dyeings using tridosium NTA and inorganic chemicalsDOI : 10.1111/j.1478-4408.2012.00410.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00410.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17190
in COLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 76-81[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14552 - Périodique Bibliothèque principale Documentaires Disponible Thermal sensitive agents for making stimuli responsive leathers / Jaya Prakash Alla in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 12 (12/2020)
[article]
Titre : Thermal sensitive agents for making stimuli responsive leathers Type de document : texte imprimé Auteurs : Jaya Prakash Alla, Auteur ; Nishad Fathima Nishter, Auteur ; Jonnalagadda Raghava Rao, Auteur Année de publication : 2020 Article en page(s) : p. 459-469 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale
Caractérisation
Colorimétrie
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Eaux usées -- Analyse
Granulométrie
Matériaux intelligents
Matériaux sensibles aux stimulis
Polyacryliques
SyntansIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Herein, we report the synthesis and application of a smart polymeric acrylic syntan (synthetic tanning material), which can respond to temperature and pH. Behavior of polymer at different pH (1-10) at room temperature (28°C) was studied. Also interactions with collagen were ascertained in order to understand the polymers’ response towards secondary structures of collagen. Leather made using the experimental syntan demonstrated higher temperature resistance of 3±0.5°C compared to control syntan treated leathers (1±0.5°C) when exposed to heat under artificial simulation. Experimental leathers exhibited better strength and organoleptic properties. These smart leathers find its application in extreme climatic conditions of heat or cold. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of thermoresponsive acrylic syntan - Collagen polymer interaction studies - Characterization of thermoresponsive syntan - Leather processing and syntan application - Scanning Electron Microscopy (SEM) study of polymer treated leathers - Thermal analysis - Physical strength and organoleptic properties of leather - Effluent parameters
- RESULTS AND DISCUSSION : Characterization of thermoresponsive syntan - Clouding behaviour of thermoresponsive polymer - Polymer interaction with collagen - Application of syntan in leather making - Infrared thermal imaging of syntan treated leathers - Scanning electron microscopy of leathers - Physical testing of leather - Porosity analysis of leather - Color measurement of leather - Organoleptic properties - Wastewater analysis
- Fig. 1 : Particle size distribution of control and experiment (MTP02)
- Fig. 2 : Clouding behaviour of polymer at room temperature
- Fig. 3 : Fourier transform infrated spectroscopy analysis of collagen and collagen-polymer (CP) samples
- Fig. 4 : Circular dichroism spectra for understanding stability of collagen-polymer interactions
- Fig. 5 : Digital images of a) control, c) experimenta, infra-red images of b), control d) experimental syntan treated leather
- Fig. 6 : Scanning electron microscopy images showing grain surface of a) control, b) experimental leathers at 50X, cross section images of c) control and d) experiment at 150x magnification
- Table 1 : Clouding behaviour of the polymer at different pH
- Table 2 : Temperature difference exhibited by control and experimental leathers
- Table 3 : Physical strength properties of control and experimental syntan treated leather
- Table 4 : Color values of control and experimental leathers
- Table 5 : Analysis of waste waterDOI : https://doi.org/10.34314/jalca.v115i12.4203 En ligne : https://drive.google.com/file/d/1a7TMFMOQXQr-7hriJSccnrihBn-0sjL_/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34999
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Code-barres Cote Support Localisation Section Disponibilité 22510 - Périodique Bibliothèque principale Documentaires Disponible Total degradation or environmental experiment ? / C. Brunner in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 37, N° 5/2000 (09-10/2000)
PermalinkTransposition of chrome tanning in leather making / Chao Wu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 6 (06/2014)
PermalinkTwo stage chrome tanning system (basification in a separate float) influence of organic SO2 reduced chrome tan / Victor John Sundar in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 1 (01-02/2004)
PermalinkUsing biodegradable organic salt for cotton garment dyeing to reduce effluent pollution / Ali Raza in COLORATION TECHNOLOGY, Vol. 138, N° 4 (08/2022)
PermalinkWaterborne dimethylolpropionic acid-diisocyanate adducts with alkali-deblockable isocyanate groups as pretanning agent for chrome tanning / Jie Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 2 (02/2015)
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