Adsorption, biosorption and bioaccumulation used to remove chromium (III) from tanning wastewaters : A critical review / B. H. Hintermeyer in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 6 (11-12/2013)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 97, N° 6 (11-12/2013) . - p. 231-237 Titre : Adsorption, biosorption and bioaccumulation used to remove chromium (III) from tanning wastewaters : A critical review Type de document : texte imprimé Auteurs : B. H. Hintermeyer, Auteur ; E. L. Tavani, Auteur Année de publication : 2013 Article en page(s) : p. 231-237 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants Adsorption Bioaccumulation Biosorption Champignons microscopiques Chrome trivalent Déchets industriels -- Elimination Eaux usées -- Décontamination Eaux usées -- Epuration Eaux usées -- Recyclage Microorganismes Séparation (technologie) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Processes of adsorption, biosorption and bioaccumulation were analyzed considering their ability to remove chromium(III). Already published studies that represent the actual state of knowledge were taken into account for this purpose. The review includes a detailed description of principal physicochemical properties of adsorbents, biosorbents and micro-organisms, pointing out those features that explain the mechanism by which the separation occurs. We noted an inadequate evaluation of the bearing species of the tanning agent with respect to treated solutions and that, not always the most adequate species was selected. In order to elucidate both aspects, the way in which the electrical charge and the size of studied complex ions affect the attraction force in adsorption/biosorption were examined. The consideration of such parameters proved that the electrical charge varies enormously from one substance to another and besides it prevails on the size. Accordingly, it was decided to focus attention only on treatments that were performed with tanning wastewater or with basic chromium(III) sulphate. Finally, the amounts of chromium(III) sequestered per gram of each adsorbent/biomaterial were compared. The largest uptake was 189.1mg/g, obtained with a Cr-resistant autochthonous fungus. Note de contenu : - Organic adsorbents - Electric charge and size of chromium (III) bearing species - Amount of chromium (III) retained by each adsorbent En ligne : https://drive.google.com/file/d/1qmrD9Zv-_GzouZpxAndkHY9xXn5JrH_S/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20144 [article]

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Adsorption removal of Brilliant green and Safranin-O contaminants from water using a hydrogel based on carboxymethyl cellulose and sodium alginate crosslinked by epichlorohydrin / Khushbu in COLORATION TECHNOLOGY, Vol. 139, N° 4 (08/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 4 (08/2023) . - p. 407-429 Titre : Adsorption removal of Brilliant green and Safranin-O contaminants from water using a hydrogel based on carboxymethyl cellulose and sodium alginate crosslinked by epichlorohydrin Type de document : texte imprimé Auteurs : Khushbu, Auteur ; Vasudha Vaid, Auteur ; Nivaydita Dagar, Auteur ; Nikhil, Auteur ; Rajeev Jindal, Auteur Année de publication : 2023 Article en page(s) : p. 407-429 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants Adsorption Alginate de sodium L'alginate de sodium ou polymannuronate sodique, de formule NaC6H7O6 est un additif alimentaire (E401) utilisé dans les boissons, constitué d’alginate et de sodium. Il se présente sous forme de poudre blanche à blanc crème, inodore et sans saveur, très soluble dans l'eau. C'est une longue molécule extraite d'algues brunes, constituée d'unités de glucides reliées ensemble pour former une chaîne. Caractérisation Carboxyméthylcellulose Colloides -- Synthèse Colorants -- Adsorption Déchets -- Elimination Eaux usées -- Décontamination Eaux usées -- Epuration Épichlorohydrine L'épichlorohydrine ou épichlorhydrine ou 1-chloro-2,3-époxypropane, est un composé organochloré de formule semi-développée CH2CHOCH2Cl, liquide volatil toxique, incolore à forte odeur d'ail. Un atome de carbone de l'épichlorohydrine est chiral, il existe donc deux formes énantiomères de ce composé. hydrocolloïdes Mesure Réticulation (polymérisation) Index. décimale : 667.3 Teinture et impression des tissus Résumé : The current study investigates the adsorption properties of a chemically crosslinked hydrogel based on sodium alginate (NaALG) and carboxymethyl cellulose (CMC). The structural characteristics of the investigated hydrogel are described using information from Fourier Transform–infrared spectra, X-ray diffraction patterns and field emission scanning electron microscopy pictures. The NaALG/epichlorohydrin (ECH)/CMC hydrogel was synthesised under optimised conditions with respect to the swelling percentage. Various reaction parameters were varied to obtain the maximum swelling percentage. The synthesised hydrogel was taken as an adsorbent in the decolorisation of Brilliant green (BG) and Safranin-O (SO) dyes from water. According to the kinetic investigations, the decolorisation equilibrium of SO by NaALG/ECH/CMC was discovered in 4 hours (98.98%), while the removal of BG by NaALG/ECH/CMC took 6 hours (97.7%). Chemical processes were used to describe the decolorisation mechanisms, which significantly supported the pseudo-first-order model. NaALG/ECH/CMC hydrogel absorption was indicated to take place in monolayer adsorption form (Langmuir isotherm). The highest adsorption capacity for BG was discovered to be 864.8 mg g−1 and for SO it was 193.1 mg g−1, by synthesised hydrogel, where “mg” refers to the commercial colourant and not to the pure dye. Therefore, the synthesised hydrogel can be considered as a smart device for the adsorption of dye in water purification tasks. Note de contenu : - EXPERIMENTAL : Materials - Preparation of NaALG/ECH/CMC-based super adsorbent hydrogel (In Air) - Characterisation - Water absorbency measurement - Adsorption studies - Kinetics of adsorption - Adsorption equilibrium - RESULTS AND DISCUSSION : Adsorbent synthesis and mechanism - Optimisation of various parameters - Characterisation - Mechanism for the adsorption of dyes (BG and SO) - Optimised parameter for adsorption of BG and SO - Adsorption kinetics - Adsorption isotherms - Desorption and reusability studies - Comparative analysis of dye adsorption capacity with other absorbents - Table 1 : Optimisation table of various reaction parameters responsible for the swelling percentage of the NaALG/ECH/CMC hydrogel - Table 2 : Coherence length, d-spacing of CMC, NaALG and the NaALG/ECH/CMC hydrogel - Table 3 : Kinetic constants for the adsorption of BG and SO dyes on the NaALG/ECH/CMC hydrogel - Table 4 : Various adsorption isotherms for the adsorption of BG and SO dyes on the NaALG/ECH/ALG hydrogel at optimised concentrations - Table 5 : Comparison of NaALG/ECH/CMC with other absorbents DOI : https://doi.org/10.1111/cote.12655 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12655 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39679 [article]

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An integrated approach for the treatment of vegetable tannins wastewaters / Balaraman Madhan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 1 (01-02/2005)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 1 (01-02/2005) . - p. 9-14 Titre : An integrated approach for the treatment of vegetable tannins wastewaters Type de document : texte imprimé Auteurs : Balaraman Madhan, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; A. Sharli, Auteur ; Jonnalagadda Raghava Rao, Auteur Année de publication : 2005 Article en page(s) : p. 9-14 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acacia et constituants Eaux usées -- Décontamination Eaux usées -- Epuration Potentiel zeta Précipitation (chimie) Sulfate de zinc Tanins végétaux Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Intensive leather making techniques in an eco-sensitive world have increased the attraction of a tanning system based on natural products such as plant polyphenolics. However, there is also a distinct disadvantage in the usage of such materials because of the high organic loading of the effluent which is also difficult to degrade due to the high oxygen demand. We have examined the treatment of vegetable tannery effluents aiming at the reduction of the pollution load. Two methods have been evaluated, one based on precipitation of tannins as zinc-tannate and another with oxidative degradation after precipitation. In the precipitation method, 0.5% wattle solution at pH10 is precipitated as zinc-tannate giving a 73% reduction in COD. A further reduction of the chemical oxygen demand by 97% has been obtained with the two-stage approach of precipitation followed by oxidative degradation in the presence of an immobilized iron catalyst. This integrated approach provides a viable solution to the problem of vegetable tannins in wastewaters. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Zeta potential measurements - Precipitation treatment - Two-step treatment - Treatment of industrial samples - RESULTS AND DISCUSSION : Treatment by precipitation method - Two-step treatment - Treatment of commercial vegetable tannin wastewater - Commercial scale treatment - Table 1 : Effect of pH on COD reduction of vegetable tannin solution - Table 2 : % Reduction of COD on precipitation of vegetable tannins with different amounts of zinc sulphate - Table 3 : COD of 0.5% wattle solution before and after treatment - Table 4 : COD of the commercial vegetable tannery wastewater before and after treatment En ligne : https://drive.google.com/file/d/1acFfI8-TAPuL5jjhh6K6TocBI1xyk5b6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39608 [article]

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Analyses 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)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 12 (12/2018) . - p. 409-417 Titre : Analyses of nitrogen metabolism functional microbial community in aerobic tanks of hydrolysis acidification and multistage aerobic process for tannery wastewater Type de document : texte imprimé Auteurs : Ding Shaolan, Auteur ; Tian Qianqian, Auteur ; Cao Kai ; Li Hua ; Yang Jianjun Année de publication : 2018 Article en page(s) : p. 409-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Eaux usées -- Analyse Eaux usées -- Décontamination Hydrolyse Microbiologie industrielle Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The actual tannery wastewater was treated by hydrolysis acidification and multistage aerobic process (A/O3). The growth status of microorganisms in three aerobic tanks was measured with the Biolog microplate method to reflect the ability of metabolizing nitrogen source. In the three aerobic tanks, the functional differences between different nitrogen source metabolism microbial communities in three aerobic tanks were compared and analyzed. The results of the present study have shown that when the concentrations of ammonium chloride and potassium nitrate were low, the metabolic activity of nitrifying bacteria was higher than that of denitrifying bacteria in aerobic tanks. With the increase of concentration of ammonium chloride and potassium nitrate, the metabolic activity of denitrifying bacteria was gradually increased, and gradually higher than that of the nitrifying bacteria metabolism. When the concentrations of ammonium chloride and potassium nitrate were 100 mg/L and 20 mg/L, and the concentrations of ammonium chloride and potassium nitrate were 150 mg/L and 30 mg/L, O1 has the best denitrification effect. However, when the concentrations of ammonium chloride and potassium nitrate were increased, nitrogen load was increased, the denitrification effects of nitrification and denitrifying microorganisms were fluctuated. And the diversity index analyses by five indexes showed that the metabolic capacity of microorganisms to carbon sources is good. Note de contenu : - MATERIALS AND METHODS : Chemicals - Experimental equipment - BIOLOG experimental method - Data analyses - RESULTS AND DISCUSSION : Community analyses of nitrogen metabolism microorganisms in O3 - Functional microbial community analyses based on carbon source metabolism in activated sludge - Analyses of carbon metabolism characteristics of microorganisms in O3 En ligne : https://drive.google.com/file/d/1hwGiqo4g-BvZYsppBVMikxxE57zXlOF7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31401 [article]

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Application of artificial intelligence techniques in textile wastewater decolorisation fields : A systematic and citation network analysis review / Senbiao Liu in COLORATION TECHNOLOGY, Vol. 138, N° 2 (04/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 2 (04/2022) . - p. 117-136 Titre : Application of artificial intelligence techniques in textile wastewater decolorisation fields : A systematic and citation network analysis review Type de document : texte imprimé Auteurs : Senbiao Liu, Auteur ; Chris K. Y. Lo, Auteur ; Chi-Wai Kan, Auteur Année de publication : 2022 Article en page(s) : p. 117-136 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Comptage Décoloration Eaux usées -- Décontamination Eaux usées -- Epuration Intelligence artificielle Publications scientifiques Réseaux neuronaux (informatique) Index. décimale : 667.3 Teinture et impression des tissus Résumé : This study reviewed 155 journal articles to examine how artificial intelligence techniques are being applied in textile coloration and related fields. Distribution of the reviewed articles was assessed in terms of the type of journals, year of publication, methods, and research background. Based on the citation network analysis method, an objective approach, CitNetExplorer and VOSviewer are used to identify the clusters. It is found that artificial intelligence techniques are mainly three-layer artificial neural networks with different designs, which are mainly used in textile wastewater decolorisation fields, including wastewater treatment and colour fading, such as colour prediction and real-time monitoring of textile wastewater, dye removal efficiency, and dye degradation. Finally, the future research direction and limitations of this article are put forward. Note de contenu : - METHODOLOGY - DESCRIPTIVE STATISTICS : Distribution of articles by journal - Distribution of articles by year of publication - Distribution of articles by region - Distribution of methodologies used in textile coloration-related fields - Research fields while using artificial intelligence techniques - CLASSIFICATION OF RESEARCH DOMAINS - MAIN PATH ANALYSIS OF THE MAJOR RESEARCH DOMAINS - FUTURE DEVELOPMENT - LIMITATIONS DOI : https://doi.org/10.1111/cote.12589 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12589 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37843 [article]

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Benzidines 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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Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast / Patrizia Jankovic in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 11 (11/2020)  

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Biosorption of chromium from spent semi-chrome liquor : Part 1 - Effective pollution abatement using bacillus cerus / Saranya Kailasam in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 11 (11/2021)  

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Chromium(III) separation from tannery wastewaters by partial freezing / D. M. Turtoi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 4 (07-08/2004)  

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Components of a bioflocculant prepared with bacillus subtilis for the treatment of tannery wastewater / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)  

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Culture conditions optimisation of bacillus subtilis for producing bioflocculant / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 3 (05-06/2020)  

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Efficient and cost-effective wastewater treatment in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 9, N° 3 (2016)

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Electrochemical separation of chromium containing tannery waste liquid / Zheng Haonan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 3 (05-06/2020)  

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Enter the root-zone : green technology for the leather manufacturer / Richard Daniels in WORLD LEATHER, Vol. 14, N° 4 (06-07/2001)  

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Enter the root-zone : green technology for the leather manufacturer - Part 2 / Richard Daniels in WORLD LEATHER, Vol. 14, N° 5 (08-09/2001)  

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Facile preparation of hierarchical porous polydopamine microspheres for rapid removal of chromate from the wastewater / Lin Xiang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)  

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Iron(III) complexes promote hydrogen peroxide activation for efficient degradation of dyeing wastewater / Shouying Wu in COLORATION TECHNOLOGY, Vol. 140, N° 3 (06/2024)  

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Modification of activated carbon with a silane coupling agent under ultrasonic conditions for the advanced treatment of wastewater with dressing chemicals / Jin Xiao in COLORATION TECHNOLOGY, Vol. 135, N° 1 (02/2019)  

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Novel approach for the removal of organic contaminants in wastewaters : adsolubilization of 2-naphthol onto collagen fibres / Fernando Maldonado in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 3 (05-06/2013)  

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Peles Minuano - from waste to fertiliser / Martin Ricker in LEATHER INTERNATIONAL, Vol. 215, N° 4829 (04/2013)  

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