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Reducing chemical consumption and waste water COD loadings by recycling in conjunction with membrane filtration / K. Hellinger in WORLD LEATHER, Vol. 14, N° 7 (11/2001)
[article]
Titre : Reducing chemical consumption and waste water COD loadings by recycling in conjunction with membrane filtration Type de document : texte imprimé Auteurs : K. Hellinger, Auteur Année de publication : 2001 Article en page(s) : p. 37-41 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Déchets
Eaux usées -- Recyclage
Filtration
Membranes (technologie)
Produits chimiques -- Consommation -- Réduction
Séparation (technologie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The production of high quality chrome-free leather is becoming of greater importance to leather users particularly in the auto and furniture sector. However, for the production of very soft chrome-free leathers higher amounts of fatliquor, vegetable and synthetic tans are required. These quantities are greater than needed for leathers made from wet blue, and exceed the amounts which can be bound by the leather. These non-bound materials therefore remain in the process liquors and give rise to high COD in the effluent.
A simple reduction in the offer of fats and retans to reduce this wastage does not solve the problem, as it leads to a deterioration of handle, softness and fullness. Wider introduction of leathers based on wet white therefore results in higher chemical costs, and increased effluent loadings and charges.Note de contenu : - Limiting factors in recycling
- Membrane separation techniques and applications
- Leather processing using membrane separation and float recycling
- Optimising recycling technology
- Economic and ecological findings
- Fig. 1 : Additions of fatliquor and retanning material added to wet white and wet blue based on shaved weight
- Fig. 2 : Analysis of mixed process liquors from processing
- Fig. 3 : Residual COD from various stages in the production of furniture upholstery leather from wet white
- Fig. 5 : Ultrafiltration of mixed floats from furniture and auto upholstery processing
- Fig. 6 : Model for recycling within retanning, fatliquoring and dyeing
- Fig. 7 : Ultrafiltration of the residual neutralisation/ retannage / fatliquoring float
- Fig. 8 : Technique used for recycling the retentate from the neutralising / retanning / fatliquoring stage
- Fig. 9 : Analysis of residual floats from multi-recycling
- Fig. 10 : Effect of recycling on fat distributionEn ligne : https://drive.google.com/file/d/1Zwebj4sXmkkmKXaKvVxH-Rk1kOujismq/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32184
in WORLD LEATHER > Vol. 14, N° 7 (11/2001) . - p. 37-41[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006174 - Périodique Bibliothèque principale Documentaires Disponible Removal of acid black 210 dye from leather dyeing effluent using spherical particles of P(HEMA-GMA)-IDA-Cr(III) hydrogel membrane / Safiye Meric Acikel in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)
[article]
Titre : Removal of acid black 210 dye from leather dyeing effluent using spherical particles of P(HEMA-GMA)-IDA-Cr(III) hydrogel membrane Type de document : texte imprimé Auteurs : Safiye Meric Acikel, Auteur ; R. H. Şenay, Auteur ; Sinan Akgöl, Auteur ; Ahmet Aslan, Auteur Année de publication : 2017 Article en page(s) : p. 135-142 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Bains de teinture -- Epuration
Chrome trivalent
Colorants acides
Cuirs et peaux -- Teinture
Déchets industriels -- Elimination
Eaux usées -- Analyse
Eaux usées -- Epuration
hydrocolloïdes
Membranes (technologie)
Photoréticulation
Polyméthacrylate d'hydroxyéthyle-co-glycidyl méthacrylateIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Hydrogel membranes can swell by a high proportion of their weight and have a large surface area, and are nowadays preferred in adsorption studies. In this work, p(HEMA-GMA) poly(hydroxyethyl methacrylate-co-glycidyl methacrylate) spherical particulated hydrogel membrane (SPM) was produced by UV photopolymerization and the synthesized membrane was coupled with iminodiacetio acid (IDA) in order to bond the Cr(III) ions in the chrome tanning process effluent. Then p(HEMA-GMA)-IDA-Cr(III) SPM was used to remove Acid Black 210 dye from the dyeing process effluent. The membrane's chrome and dye adsorption capacities were determined using a UV/Vis Spectrophotometer at wavelengths of 601nm and 435nm respectively. After the membranes were used, the discharged tanning and dye process wastewaters were examined in order to see the differences in the wastewater in terms of COD, BOD, conductivity, pH, salinity, total dissolved solids, total suspended solids, potassium, total nitrogen and chromium content. The results showed that the metal-chelated p(HEMA-GMA)-IDA SPMs chelated chrome ions between 398.47 and 619.10mg/g, and the adsorbed Acid Black 210 dye molecules were between 0.76 and 1.87mg/g. In conclusion, p(HEMA-GMA)-1DA SPM is an effective sorbent system for removing Cr(III) ions and acid dye molecules from leather discharge waters. Note de contenu : - Characterisation of nano-PHEMA-AB
- Adsorption of Cr(III) ions
- Wastewater analysis of chrome tanning and dyeing effluents
- FIGURES : 1. Treatment of chrome tanning wastewater with p(HEMA-GMA)-IDA hydrogel membrane - 2. Treatment of dyeing wastewater with p(HEMA-GMA)-IDA hydrogel membrane - 4. SEM photographs of (HEMA-GMA) (at a scale of 1mm and 50mm) - 4. SEM photographs of p(HEMA-GMA) (at a scale of 1mm and 50mm) - 5. SEM photographs of p(HEMA-GMA)-IDA (at a scale of 1mm and 50mm) - 6. ATR-FTIR spectra of nanopolymer a) nano-PHEMA-AB ; b) PHEMA nanopolymer - 7. Graphical illustration of chrome tanning wastewater analysis - 8. Graphical illustration of leather dyeing wastewater analysis
- TABLES : 1. Leather process - 2. 2. Cr(III) adsorption capacity of p(HEMA-GMA-IDA) hydrogel membrane from tanning effluent - 3. Dye adsorption capacity of p(HEMA-GMA-IDA)-Cr(III) hydrogel membrane from dye effluent - 4. Dye desorption capacity from p(HEMA-GMA)-IDA-Cr(III) hydrogel membrane - 5. Results of wastewater analysisEn ligne : https://drive.google.com/file/d/1JJcD85GUImZHAbn0CcSB5OFfGMnl46Kh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28798
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 3 (05-06/2017) . - p. 135-142[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19049 - Périodique Bibliothèque principale Documentaires Disponible Removal of synthetic organic foulants by granular activated carbon filters and ultrafiltration membrane / Muhammad Zahoo in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 5 (09-10/2012)
[article]
Titre : Removal of synthetic organic foulants by granular activated carbon filters and ultrafiltration membrane Type de document : texte imprimé Auteurs : Muhammad Zahoo, Auteur Année de publication : 2012 Article en page(s) : p. 382-389 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Charbon actif
Composés organiques
Filtration
Membranes (technologie)Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : In this study granular activated carbon (GAC) was used as pretreatment for foul control in ultrafiltration (UF) membrane process. First the adsorptive parameters for phenol, chlorophenol, nitrophenol and hydroquinone on GAC were determined. The equilibrium data fits well to Langmuir adsorption isotherm rather than Freundlich model. Breakthrough curves were obtained from fixed bed experiments and column parameter were calculated from it. GAC filters were then used in combination with UF membrane system. The percent retentions of the four organic substances under study were determined and the declines in flux were observed. The problems associated with powdered activated carbon like cake formation over membrane surface, long back wash time and blackening of pipes were not observed for GAC. Note de contenu : - MATERIALS : Chemicals - Adsorbent - Equilibrium adsorption experiments - Fixed-bed experiments - Membrane experiments
- RESULTS AND DISCUSSION : Adsorption isotherms - Modeling of the adsorption isotherms - Adsorption kinetics - GAC/UF processDOI : 10.3139/113.110206 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15873
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 49, N° 5 (09-10/2012) . - p. 382-389[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14156 - 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)
[article]
Titre : Research recap of membrane technology for tannery wastewater treatment : a review Type de document : texte imprimé Auteurs : Fu Yang, Auteur ; Xing-Bao Wang, Auteur ; Yuanyuan Shan, Auteur ; Chongde Wu, Auteur ; Rongqing Zhou, Auteur ; Nicolas Hengl, Auteur ; Frédéric Pignon, Auteur ; Yao Jin, Auteur Année de publication : 2023 Article en page(s) : 17 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Déchets industriels -- Elimination
Eaux usées -- Epuration
Eaux usées -- Recyclage
Membranes (technologie)
Tannage -- DéchetsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : As a highly complex aqueous effluent, tannery wastewater from leather industry should be treated appropriately before discharging into the environment. Membrane technology has been shown to be a promising approach for tannery wastewater treatment as it may achieve “Zero Liquid Discharge (ZLD)”. This work, as the state-of-the-art, attempts to review the world-wide research trends of membrane technologies, the technical recapitulation and recent advances of such technology for tannery wastewater treatment. Generally, manufacture membrane, membrane-based integrated process, MBR, NF, UF and RO are the hotspots in this field. Details of different membrane technologies configured for tannery wastewater treatment, such as membrane materials, scale, membrane modules, operating conditions and removal efficiency of pollutants, are also summarized. It should be noted that membrane fouling is still a major challenge in the membrane technology during tannery wastewater treatment. Therefore, process coupling, either within diverse membrane technologies or between membrane and non-membrane technologies, is considered as a promising alternative to treat the leather tannery. Note de contenu : - RESEARCH TECHNICAL RECAPITULATION : Key parameters of membrane technology - Pollutants removal efficiency - Adaptable cases for leather tannery process effluent treatment
- RECENT RESEARCH ADVANCEMENTS : Pressure-driven membrane processes - Non-pressure-driven processes: FO and ED - Membrane bioreactor - Coupled membrane processes
- NON-MEMBRANE-BASED TECHNOLOGIES FOR THE TREATMENT OF TANNERY WASTEWATER
- CHALLENGES AND FUTURE PERSPECTIVE
- Table 1 : The typical composition of the integrated tannery wastewater
- Table 2 : Wastewater quality of different tannery sections
- Table 3 : Applications of MF and UF for tannery wastewater treatment
- Table 4 : Applications of NF and RO for tannery wastewater treatment
- Table 5 : Applications of integrated processes, ED and MBR for tannery wastewater treatmentDOI : https://doi.org/10.1186/s42825-023-00132-8 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-023-00132-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40073
in COLLAGEN AND LEATHER > Vol. 5 (2023) . - 17 p.[article]Reuse of textile wastewater treated by moving bed biofilm reactor coupled with membrane bioreactor / Xuefei Yang in COLORATION TECHNOLOGY, Vol. 137, N° 5 (10/2021)
[article]
Titre : Reuse of textile wastewater treated by moving bed biofilm reactor coupled with membrane bioreactor Type de document : texte imprimé Auteurs : Xuefei Yang, Auteur ; Víctor López-Grimau, Auteur ; Mercedes Vilaseca, Auteur ; Martí Crespi, Auteur ; Judit Ribera-Pi, Auteur ; Montse Calderer, Auteur ; Xavier Martinez-Llado, Auteur Année de publication : 2021 Article en page(s) : p. 484-492 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biofilms
Bioréacteurs
Eaux usées -- Analyse
Eaux usées -- Recyclage
Filtration
Membranes (technologie)
Teinture -- Fibres textiles
Textiles et tissus -- IndustrieIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A laboratory-scale pilot plant of moving bed biofilm reactor coupled with membrane bioreactor (MBBR-MBR) was studied with regard to wastewater treatment in the textile industry, and the reuse feasibility of treated water was investigated. The pilot plant comprised two connected parts: an aerobic tank filled with carriers and a submerged membrane tank. The MBBR-MBR system reduced the hydraulic retention time to 1 day, which is very promising compared with conventional biological treatment in the textile industry. The removal efficiency of chemical oxygen demand reached 93%, which is almost the maximum for a biological process treating this type of wastewater, as well as the colour removal performance, which achieved 85%. Additionally, 99% of total suspended solids were removed due to filtration. Furthermore, new dyeing processes reusing the treated water were performed. The quality of the new dyed fabrics with treated water was compared with reference fabrics. Colour differences between new dyed fabrics and reference fabrics were found to be within the general requirement of the textile industry (ΔECMC(2:1) < 1). The reuse of treated water in new dyeing processes is beneficial both for the industry and for the environment, because the textile sector is an intensive water consumer during both the dyeing and finishing processes. Note de contenu : - METHODS : Characteristics of textile wastewater - Reactor set-up - Reuse of treated water in new dyeing processes - Analytical methods
- RESULTS AND DISCUSSION : HRT and mixed liquor suspended solids - Removal of COD - Colour removal - TSS and turbidity removal - Reuse of the treated effluent and salt (sodium chloride)
- Table 1 : Wastewater characteristics
- Table 2 : Carrier characteristics
- Table 3 : Membranes characteristics
- Table 4 : Chromatic coordinates and colour differences between fabrics dyed with the treated effluent and a reference dyeing processDOI : https://doi.org/10.1111/cote.12543 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12543 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36505
in COLORATION TECHNOLOGY > Vol. 137, N° 5 (10/2021) . - p. 484-492[article]Réservation
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