Adsorption isotherm and kinetics of tannic acid on to carbonized chrome tanned leather solid waste / Rubina Chaudhary in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 6 (06/2017)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 6 (06/2017) . - p. 198-206 Titre : Adsorption isotherm and kinetics of tannic acid on to carbonized chrome tanned leather solid waste Type de document : texte imprimé Auteurs : Rubina Chaudhary, Auteur ; Anupama Pati, Auteur Année de publication : 2017 Article en page(s) : p. 198-206 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorbants et adsorbants Carbonisation Cinétique chimique Cuirs et peaux -- Déchets Déchets industriels -- Elimination Isotherme d'adsorption Solutions aqueuses (chimie) Tanins Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The disposal of chrome tanned leather shavings (CTLS) waste is a serious concern for the environment due to the presence of chromium. In this study, an attempt has been made to prepare adsorbent from CTLS through carbonization process. Carbonization of CTLS at temperature 600°C had provided surface area of 620 m2 g-1 and total pore volume of 0.49 cm3 g-1. The adsorption study is conducted by employing adsorbent prepared from CTLS on adsorbate tannic acid. The effects of various experimental parameters have been investigated using a batch adsorption technique to obtain information on treating wastewater containing tannic acid. The extent of tannic acid removal was studied by varying parameters such as pH, contact time, initial concentration of the tannic acid and amount of adsorbent. The removal efficiency of tannic acid in aqueous solution is found to be about 95%. The experimental equilibrium data for this system has been analyzed using the linearized forms of Langmuir and Freundlich isotherms. The Langmuir isotherm was found to provide the best theoretical correlation of the experimental data for the adsorption of tannic acid. The adsorption of tannic acid on adsorbent increased from 57 to 63 mg g-1, when the temperature was increased from 30 to 60°C. The adsorption was found to follow pseudo-second order kinetics. In short, this study provides a greener solution for CTLS and tannin containing wastewater. Note de contenu : - EXPERIMENTAL : Materials - Preparation of carbonized (CTLS) - Preparation of aqueous solution of tannic acid as adsorbent - Adsorption studies - Isotherm studies - Adsorption kinetics - RESULTS AND DISCUSSION : Characteristics of adsorbent - Effect of pH, initial concentration and treatment period on the removal of tannic acid - Adsorption isotherms - Adsorption kinetics En ligne : https://drive.google.com/file/d/1Lftyao8lb93ahjiuqGy0Rs24kz2_QTyL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28690 [article]

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Adsorptive removal of As(V) from aqueous solution by Zr(IV)-loaded skin shavings / Jiao Limin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 9 (09/2009)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 9 (09/2009) . - p. 308-315 Titre : Adsorptive removal of As(V) from aqueous solution by Zr(IV)-loaded skin shavings Type de document : texte imprimé Auteurs : Jiao Limin, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2009 Article en page(s) : p. 308-315 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorbants et adsorbants Arsenic Cuirs et peaux -- Déchets Cuirs et peaux de porcs Déchets -- Elimination Isotherme d'adsorption Solutions aqueuses (chimie) Wet-white (tannage) Zirconium Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Wet-white shavings are one of the main solid wastes produced in the leather industry. In this paper, Zirconium (IV)-loaded adsorbent (ZrLA) was prepared by using wet-white shavings as the supporting matrix. The fundamental adsorption behaviors of this new adsorbent for arsenic [As(V)] were investigated. It was found that the adsorption capacity of ZrLA for As(V) in aqueous solution was 60.90 mg-g-1, when the initial concentration of As(V) was 75.0 mg. L-1 at pH 4.0 and the dosage of ZrLA was 1.0 g.L-1. The initial pH of As(V) solution significantly affected adsorption capacity of ZrLA to As(V) and the optimal pH for adsorption was in the range of 3.0-6.0. The adsorption isotherms of As(V) could be well fitted by the Langmuir equation, and the maximum adsorption capacities calculated by the Langmuir equation were close to those determined by experiments. The adsorption kinetics of As(V) on ZrLA could be satisfactorily described by the pseudo-second-order rate model. The adsorption capacity was increased with the increase of the zirconium content in ZrLA, and the highest adsorption capacity was obtained when zirconium content of ZrLA was 90-110 mg.g-1. Note de contenu : - EXPERIMENTAL METHODS : Materials - Preparation of Zr(IV)-loaded absorbent based on wet-white shavings - Preparation of As(V) stock solution - Effect of initial pH on adsorption capacity of ZrLA to As(V) - Adsorption isotherms - Effect of zirconium content in ZrLA on adsorption capacity - Adsorption kinetics - RESULTS AND DISCUSSION : Effect of initial pH on adsorption capacity of ZrLA to As(V) - Adsorption isotherm - Effect of the zirconium content in ZrLA on As(V) adsorption - Adsorption kinetics En ligne : https://drive.google.com/file/d/1UEbM9mmPakXpBVSI8vBe0FL-y0wo2W29/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17835 [article]

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Adsorptive removal of Ni2+ from aqueous solution by low cost cellulosic adsorbent-adsorption kinetics and isotherm study / Sultan Alam in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 50, N° 2 (03-04/2013)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 50, N° 2 (03-04/2013) . - p. 104-112 Titre : Adsorptive removal of Ni2+ from aqueous solution by low cost cellulosic adsorbent-adsorption kinetics and isotherm study Type de document : texte imprimé Auteurs : Sultan Alam, Auteur ; Noor-ul-Amin, Auteur ; Najeeb-ur-Rehman, Auteur ; Azmat Ullah, Auteur Année de publication : 2013 Article en page(s) : p. 104-112 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Cinétique chimique Coefficient de partage (chimie) Isotherme d'adsorption Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Adsorptive removal of Ni2+ from aqueous solution by low cost cellulosic adsorbent was investigated with respect to adsorption kinetics and adsorption isotherm. Adsorbent was characterized by BET surface area, SEM, EDX, FTIR and Zeta potential technique and reported earlier. The surfaces contain carbonyl and hydroxyl functional groups, which act as binding sites for Ni2+ ion. Adsorption kinetics of Ni2+ was tested by first order, Elovich, parabolic diffusion and Bangham kinetic equations. Thermodynamic parameters like ?H?, ?S? and ?G? were calculated from the kinetic data. The rate of adsorption was high at high adsorption temperature. Positive values of ?S? reflect some structural exchange among the active site of the adsorbent and metal ion. Freundlich, Langmuir, Temkin isotherms and distribution coefficient were found fit to the adsorption isotherm data.. Note de contenu : - EXPERIMENTAL : Materials and instruments - Characterization - Adsorbent preparation - Adsorption kinetic - Adsorption isotherm study - RESULTS AND DISCUSSION : Characterization - Adsorption kinetics - Adsorption isotherm study DOI : 10.3139/113.110229 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17888 [article]

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An investigation of mild carbon steel corrosion inhibition in hydrochloric acid medium by environment friendly green inhibitors / M. Gopiraman in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 1 (01/2012)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 1 (01/2012) . - p. 15-26 Titre : An investigation of mild carbon steel corrosion inhibition in hydrochloric acid medium by environment friendly green inhibitors Type de document : texte imprimé Auteurs : M. Gopiraman, Auteur ; P. Sakunthala, Auteur ; D. Kesavan, Auteur ; V. Alexramani, Auteur ; I. S. Kim, Auteur Année de publication : 2012 Article en page(s) : p. 15-26 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique. L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1. C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple. Anticorrosifs Brugmansia suaveolens Cassia roxburghii Chimie écologique Chlorhydrique, Acide Electrochimie Fourier, Spectroscopie infrarouge à transformée de Isotherme d'adsorption Métaux -- Revêtements protecteurs Microscopie électronique à balayage Spectroscopie d'impédance électrochimique Surfaces -- Analyse Index. décimale : 667.9 Revêtements et enduits Résumé : Inhibition effect of Brugmansia suaveolens (BS) and Cassia roxburghii (CR) on mild carbon steel in 1.0 M HCl solution was studied. Inhibition efficiency of plant extracts were carried out by using chemical (weight loss method) and electrochemical techniques (potentiodynamic polarization and electrochemical impedance spectroscopy). The effect of temperature on the corrosion behavior of mild carbon steel in 1.0 M HCl with addition of plant extracts was studied in the temperature range of 300–320 ± 1 K. Inhibition efficiencies up to 94.69 for BS and 93.22 for CR can be obtained. The adsorption mechanism of inhibition was supported by FT-IR, surface analysis (SEM–EDS), and adsorption isotherms. The thermodynamic parameter values of free energy of adsorption (?G ads) reveal that inhibitor was adsorbed on the mild carbon steel surface via both physisorption and chemisorption mechanisms. Note de contenu : EXPERIMENTAL : Inhibitors preparation - Coupon and solution preparation - Chemical techniques (weight loss methods) - Electrochemical techniques - FT-IR spectrum - SEM and EDS analysis - RESULTS AND DISCUSSION : Effect of inhibitors concentration - Effect of temperature - Effect of acid concentration - Tafel polarization - Electrochemical impedance spectroscopy - Adsorption isotherms - FT-IR spectrum - SEM and EDS analysis DOI : 10.1007/s11998-011-9374-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-011-9374-6.pdf?pdf=button Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14351 [article]

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Aswan clay as sorbent for removal of Cr(III) and Cr(VI) from synthetic solution and tannery wastewater / O. A. Mohamed in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 5 (09-10/2005)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 5 (09-10/2005) . - p. 204-209 Titre : Aswan clay as sorbent for removal of Cr(III) and Cr(VI) from synthetic solution and tannery wastewater Type de document : texte imprimé Auteurs : O. A. Mohamed, Auteur ; S. A. Sayed, Auteur ; H. S. Mohamady, Auteur ; N. H. El-Sayed, Auteur Année de publication : 2005 Article en page(s) : p. 204-209 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants Adsorption Argile Caractérisation Chrome trivalent -- Absorption Déchets industriels -- Elimination Eaux usées -- Epuration Eaux usées -- Teneur en chrome trivalent Isotherme d'adsorption Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The sorption on Aswan clay of Cr(III) and Cr(VI) from synthetic solution and tannery wastewater has been studied. The clay has been characterized and used for the removal of chrome. The adsorption was studied as a function of pH, contact time, adsorbate concentration, loading, temperature and interfering ions. The equilibrium data fitted well with a Freundlich adsorption isotherm, where the Kf and n values are 2.08 - 4.6 for Cr(VI), 14.45 - 2.5 for Cr(III) and 8.31 - 2.4 for tannery wastewater. In our study we choose Aswan clay, which is low in cost, to aid the economy of the process. Adsorption studies indicated that chrome removal is 77% for CrVI, 90% for CrIII and 75% for a tannery wastewater. Note de contenu : - MATERIALS AND METHODS : Adsorbents - CHARACTERISTICS OF ASWAN CLAY : X-ray diffraction analysis - Adsorbates - Chemicals - Instrumentation - Methods - RESULTS AND DISCUSSION : Effect of pH - Effect of agitation time - Effect of adsorbent loading - Effect of adsorbate concentration - Effect of temperature - Effect of some anions on chromium (VI) removal - ADSORPTION ISOTHERMS En ligne : https://drive.google.com/file/d/1TtT-yFTYThWUEKw5oSLffFro0XdfeHyr/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39231 [article]

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Biosorption of Malachite Green dye by the brown alga Dictyota cervicornis : Kinetics and isotherm study / Mozhgan Panahi in COLORATION TECHNOLOGY, Vol. 134, N° 4 (08/2018)  

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Dyeing properties on polyurethane fibres of novel azo disperse dyes prepared from a four-component Ugi reaction / Huanhuan Li in COLORATION TECHNOLOGY, Vol. 136, N° 6 (12/2020)  

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Efficacy of parthenium hysterophorus waste biomass compared with activated charcoal for the removal of CI Reactive Red 239 textile dye from wastewater / Shreyas Bapat in COLORATION TECHNOLOGY, Vol. 137, N° 3 (06/2021)  

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Improving the dyeability of polyimide by pretreatment with alkali / Zehong Wang in COLORATION TECHNOLOGY, Vol. 132, N° 6 (12/2016)  

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Moisture sorption isotherms of leather / Naïma Benmakhlouf in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 2 (03-04/2016)  

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A new dye-modified poly(ethylene oxide)–poly(propylene oxide) polymer used as a dispersant for CI Disperse Red 60 / Bin Zhang in COLORATION TECHNOLOGY, Vol. 129, N° 5 (10/2013)  

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Nouvelles techniques de mesure de la surface des noirs de carbone / J. Bouton in CAOUTCHOUCS & PLASTIQUES, N° 780 (10/1999)

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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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Preparation of amino-terminated hyperbranched buffing dust and its adsorption property towards acid fuchsin : Use of an industry by-product to adsorb dyestuffs / Jie Liu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)  

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Rules drive innovation / Jim Reader in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4452 (05/2002)

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Study of the dyeing properties of saffron and ultrafiltrated saffron powders, as colourants for natural and synthetic fibres / Panagiotis Naidis in COLORATION TECHNOLOGY, Vol. 139, N° 5 (10/2023)  

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Surface characteristics and dyeing properties of polyimide fabric treated with sodium hydroxide / Gang Bai in COLORATION TECHNOLOGY, Vol. 135, N° 1 (02/2019)  

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The 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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Use of ternary solvent (water - ethanol - ethyl acetate) medium for leather processing : a possible paradigm change / Bhargavi Narayana Reddy Gari in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 7 (07/2016)  

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