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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)
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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)
TaninsIndex. 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 kineticsEn ligne : https://drive.google.com/file/d/1Lftyao8lb93ahjiuqGy0Rs24kz2_QTyL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28690
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 6 (06/2017) . - p. 198-206[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19012 - Périodique Bibliothèque principale Documentaires Disponible 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)
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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)
ZirconiumIndex. 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 kineticsEn ligne : https://drive.google.com/file/d/1UEbM9mmPakXpBVSI8vBe0FL-y0wo2W29/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17835
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 9 (09/2009) . - p. 308-315[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011556 - Périodique Bibliothèque principale Documentaires Disponible 011557 - Périodique Bibliothèque principale Documentaires Disponible Annual reports on specific topics in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 70 (Année 1986)
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Titre : Annual reports on specific topics Type de document : texte imprimé Année de publication : 1986 Article en page(s) : p. 61-64 Langues : Anglais (eng) Catégories : Atmosphère -- Pollution
Boues résiduaires
Chimie analytique
ConfitageLe confitage est une action biochimique effectuée au moyen de produits enzymatiques, qui a pour but de dégrader les fibres élastiques, contribuant ainsi à augmenter la souplesse du cuir. En outre, les enzymes complètent la dégradation des résidus épidermiques, donnant ainsi une fleur plus propre et plus lisse.
Cuirs et peaux -- Déchets
Eaux usées -- Recyclage
Liqueurs de tannage
Travail de rivière (cuir)Index. décimale : 675 Technologie du cuir et de la fourrure Note de contenu : 1. WASTE WATERS : Beamhouse operations (from soaking to bating) - Pickling and tanning - Waste water treatment - Criteria for discharges - Analytical methods - Recycling of process liquors
2. SOLID WASTES : Untanned wastes - Tanned wastes - Sludges
3. AIR POLLUTION
4. CHARGES
5. CO-OPERATION WITH THE INTERNATIONAL COUNCIL OF TANNERSEn ligne : https://drive.google.com/file/d/1cINisJU1bP8NoRqAarWtWSUf3nllxBLi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9208
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 70 (Année 1986) . - p. 61-64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007133 - Périodique Bibliothèque principale Documentaires Disponible Assessment of properties and effect of heterogeneous cultures of aerobic micro-organisms in the bio technology of tannery wastewater / J. Kupec in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 85, N° 4 (07-08/2001)
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Titre : Assessment of properties and effect of heterogeneous cultures of aerobic micro-organisms in the bio technology of tannery wastewater Type de document : texte imprimé Auteurs : J. Kupec, Auteur Année de publication : 2001 Article en page(s) : p. 137-139 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Biodégradation
Biopolymères
Biotechnologie
Boues résiduaires -- Analyse
Cuirs et peaux -- Déchets
Déchets industriels -- Elimination
Microorganismes
Tannage -- DéchetsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The article presents a review of results we obtained during recent years in the field of assessing the properties and effect of activated sludge produced during treatment of tannery wastewaters by activation. The first part primarily mentions works concerning this biornass itself (composition. activity, sorption properties and others). The second then summarises results obtained when evaluating processes under way during the removal of specific substrates produced by tanning manufacture (e.g. proteins, tanning agents). The results can serve to choose alternatives capable of use in disposing of the significant pollution that tanning emits into the environment. Note de contenu : - Survey results : Elementary analysis - Biopolymers - Adsorbance - Buffer ability - Treatment of tanning materials - Enzyme activity - Respiration activity
- Biodegradation of proteins and polyphenolsEn ligne : https://drive.google.com/file/d/1wX_JgFPpBR5LXe7ouWq9uvYSuevSrClg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40245
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 85, N° 4 (07-08/2001) . - p. 137-139[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Biochar : a possibility for solid waste disposal / W. Aitkenhead in LEATHER INTERNATIONAL, Vol. 215, N° 4827 (01-02/2013)
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Titre : Biochar : a possibility for solid waste disposal Type de document : texte imprimé Auteurs : W. Aitkenhead, Auteur Année de publication : 2013 Article en page(s) : p. 28-30 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomasse
Cuirs et peaux -- Déchets
Déchets -- Réduction
Déchets industriels -- Elimination
PyrolyseLa pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation.
Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente.
SolidesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Biochar is the product of the pyrolysis of biomass created in the absence of oxygen. It has a high carbon content and a high stability in the environment.
For the leather industry, biochar production could be used as a cost effective means of waste disposal. It is cheaper than dumping the waste in landfill and decreases the mass and volume of the waste that industry generates, and so is a more economical option for waste disposal than landfill.
Biochar makes leather waste safer for the environment, as it sequesters the chrome that otherwise leaches out of the waste. This in turn has the potential to lower the fees that must be paid for disposing of wastes.
If leather wastes are pyrolysed to biochar, the leather industry will become more environmentally friendly in other ways. There will be less carbon released to contribute to global warming, and in addition biochar can be used to improve soil quality.Note de contenu : - Pyrolysis
- Biochar
- Cost analysis
- Design factorsEn ligne : https://drive.google.com/file/d/1H9lu8RXjOWJEsJttj_QOJuF_QccEJWJS/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17227
in LEATHER INTERNATIONAL > Vol. 215, N° 4827 (01-02/2013) . - p. 28-30[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14563 - Périodique Bibliothèque principale Documentaires Disponible 14650 - Périodique Bibliothèque principale Documentaires Disponible PermalinkCleaner processing of leather and its wastes / James Kanagaraj / Saarbrücken [Germany] : Lambert Academic Publishing (2010)
PermalinkLes déchets en tannerie-mégisserie / Lyon : Centre Technique Cuir, chaussure, maroquinerie (CTC) (2005)
PermalinkEnzymatic hydrolysis of skin shavings for preparation of collagen hydrolysates with specified molecular weight distribution / Chi Yuanlong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 1 (01-02/2012)
PermalinkEssais d'amélioration de la valeur nutritive des protéines des déchets de peau non-tannés / M.-C. Berger in TECHNICUIR, N° 10 (12/1975)
PermalinkPermalinkLeather powder as an agent for removing environmentally hazardous organic compounds / Anita Przepiórkowska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 6 (11-12/2003)
PermalinkLife cycle assessment and leather production / Diego Navarro in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
PermalinkMinimization of industrial wastes-adding value to collagenic : Adding value to collagenic materials procter memorial lecture / J. Cot in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 3 (05-06/2003)
PermalinkObservatoire des filières de réduction et de valorisation des déchets de cuir / Martin Poupard in CTC ENTREPRISES, (10-11/2023)
PermalinkOxidative dechroming of leather shavings under ultrasound / Danhong Sun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 3 (05-06/2003)
PermalinkPhysicochemical properties of collagen, gelatin and collagen hydrolysate derived from bovine limed split waste / Zhongkai Zhang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 1 (01-02/2006)
PermalinkPermalinkPotential applications of solid waste generated in the leather industry as a novel supporting matrix for immobilization of enzyme / Hu Yang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 3 (05-06/2014)
PermalinkPyrolysis of leather trimmings in a fixed bed reactor / Ana F. Almeida in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 4 (04/2017)
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