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Characterization of raw wastewater from tanneries / Mariliz Gutterres in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 6 (11-12/2015)
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Titre : Characterization of raw wastewater from tanneries Type de document : texte imprimé Auteurs : Mariliz Gutterres, Auteur ; Jaqueline Benvenuti, Auteur ; Juliana T. Fontoura, Auteur ; Santiago Ortiz-Monsalve, Auteur Année de publication : 2015 Article en page(s) : p. 280-287 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Cuirs et peaux -- Industrie -- Brésil
Eaux usées -- Analyse
Eaux usées -- Stations de traitements
Tannage -- DéchetsIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Due to the constantly increasing requirements and supervisory environmental agencies concerning the release of industrial effluents into receiving waters, industries are looking to property treat their effluents and to achieve efficient removal of contaminants. The leather industry is responsible for the production of liquid effluents with high concentrations of pollutants since most of the process steps are carried out in an aqueous medium. Due to the changes in leather technologies in recent years, it is necessary to know and analyze how tannery effluents vary according to the processing steps performed in different tanneries. This may be used to plan and design unit operations in wastewater treatment plants. In order to contribute to this purpose, this study presents the characterization of raw tannery wastewater and provides and discusses an overview of effluent treatment plants and some particularities of them. The raw effluents were characterized by analysis of pH, turbidity, conductivity, chromium oxide, chlorides, total hardness, total Kjeldahl nitrogen (TKN), ammonia nitrogen, sakis (total, suspended : fixed and volatile, dissolved : fixed and volatile), five-day biochemical oxygen demand (BOD), chemical oxygen demand (COD), phosphorus and total organic carbon (TOC). The test results of the parameters for contaminants for each type of tannery are related to previous researches and discussed. Note de contenu : - LEATHER INDUSTRY AND WASTEWATER
- BRAZILIAN LEATHER INDUSTRY AND WASTWATER TREATMENT PLANTS
- MATERIALS AND METHODS : Tanneries and sampling - Wastewater characterizationEn ligne : https://drive.google.com/file/d/1GrNV99KF5Ge787qjsPGJYHsDDfwWVFqQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25100
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 6 (11-12/2015) . - p. 280-287[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17683 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Chemical efficiency Type de document : texte imprimé Auteurs : Karl Flowers, Auteur Année de publication : 2021 Article en page(s) : p. 36-40 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Industrie -- Aspect de l'environnement
Gaspillage -- Lutte contre
Produits chimiques -- Consommation -- Réduction
Solutions (chimie)
Solvatation
Transfert de masseIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A practical manner on how tanneries can reduce the chemicals they use is a constant area of interest. Many tanneries actively practice research, development and innovation to do this. To remind readers of why this is important, it is useful to remember that a tannery's function is to make leather and it is not there to feed an effluent plant. The management of the tannery should make it a high priority to favour the principle that the chemistry should go into the leather and should not simply go down the drain.
The UNIDO position has often estimated the amount of input chemistry (per tonne) of materials as -400-500 kg. It also reports the estimate of wasted chemistry as -380 kg (Buljan and ICre, 2015). By best estimates, that is 75-95% of the chemicals added that are wasted - incredible.Note de contenu : - Why ?
- Mass transfer
- Solvatation and mass transfer
- Fig. 1 : Inefficient chemical processes
- Fig. 2 : Efficient chemical processes
- Fig. 3 : Mass transfer
- Fig. 4 : Solute (in solution) + leather (wetted)En ligne : https://drive.google.com/file/d/1UbIP91L9uugKYOSP5mBrrk7bYcUGyaEc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36156
in INTERNATIONAL LEATHER MAKER (ILM) > N° 48 (07-08/2021) . - p. 36-40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22832 - Périodique Bibliothèque principale Documentaires Disponible Chinese understanding of the ecological environment values of the leather industry / Han Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)
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Titre : Chinese understanding of the ecological environment values of the leather industry Type de document : texte imprimé Auteurs : Han Wang, Auteur ; Jing Li, Auteur ; Yang Zhao, Auteur ; Jie Chen, Auteur Année de publication : 2021 Article en page(s) : p. 1-8 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Industrie -- Aspect de l'environnement
Cuirs et peaux -- Industrie -- ChineIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The leather industry waste-water is one of the main pollution factors of the ecological environnent. Due to long-term market competition, it was impossible to transfer the cost of waste water treatment to consumers. Discharging wastewater illegally became the usual behaviours of leather factories in past decades in China. The Environmental Supervision Department of China was faced with the dilemma of 'If we let it be, there will be a mess and 'if we take strict supervision the enterprises could not survive due to the high treatment cost'. We have to tolerate and accept the fact that environmental pollution is an inevitable consequence of extensive economic construction. In order to reduce and control pollution, the Supervision Department are strengthening supervision while accelerating the upgrading of leather production equipment, supporting enterprises to improve production process, guiding the mergers and reorganizations of the leather manufacturing industry, and seeking the dialectical unity of industry and public interests between pollution and development, survival and ecology. Note de contenu : - Characteristics and general technologies of pollution treatment in leather industry
- The chinese government's supervision measures of environmental pollution
- The effect of leather pollution supervision in China in the past decades
- The new path of leather industry pollution governance in China
- Self consistent logic of new path of leather pollution governance in China
- Table 1 : The ranking of leather products and shoes in various regions of China in 2019
- Table 2 : Rankings of China's light leather production from January to August 2019
- Table 3 : Sample statistics of environmental pollution penalties for leather enterprises
- Table 4 : Comparison of discharge standards of main pollutants from tanning (mg/L)En ligne : https://drive.google.com/file/d/1AmEXz0Tznimv2OiFm14dWBKNizrJgAxl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35311
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 1 (01-02/2021) . - p. 1-8[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22599 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Chlorinated pollutants Type de document : texte imprimé Auteurs : Karl Flowers, Auteur ; Abigail Clare, Auteur Année de publication : 2021 Article en page(s) : p. 48-49 Langues : Anglais (eng) Catégories : Alcanes
Chlore -- Composés organiques
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Ecotoxicologie
Environnement -- Etudes d'impact
Perchloréthylène
Phénols
Produits chimiques -- ToxicologieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Chlorinated compounds have been used for a range of applications in the tanning industry. These compounds are useful due to the excellent sanitation properties of the chlorine element and consist of a hydrocarbon chain with at least one covalently bonded chlorine atom.
Since the 1990s, environmental standards adopted by many countries globally have reduced and restricted the use of harmful chemicals during leather production. According to the European Environment Agency, chlorinated hydrocarbons are categorised as one of the most persistent environmental pollutants due to the highly stable C-Cl bond (which can be resistant to degradation). Therefore, many chlorinated compounds are restricted globally; however, their high environmental persistence means will remain detectable in the environment for years to come.Note de contenu : - Chlorinated phenols
- Chlorinated paraffins
- Other chlorinated solvents
- Fig. 1 : The ecotoxic effect of chlorophenols in the environment
- Fig. 2 : Chlorinated paraffin structure
- Fig. 3 : Perchloroethylene structureEn ligne : https://drive.google.com/file/d/1mVE9-sqSeU7JOG_PPmo3vXvY64Dr26Ft/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37074
in INTERNATIONAL LEATHER MAKER (ILM) > N° 50 (11-12/2021) . - p. 48-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23237 - Périodique Bibliothèque principale Documentaires Disponible Chromium in the tanning industry : an odissey from cradle to grave / Buddhadeb Chattopadhyay in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 4 (07-08/2012)
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Titre : Chromium in the tanning industry : an odissey from cradle to grave Type de document : texte imprimé Auteurs : Buddhadeb Chattopadhyay, Auteur ; Anulipi Aich, Auteur ; Subhra Kumar Mukhopadhyay, Auteur Année de publication : 2012 Article en page(s) : p. 133-140 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome hexavalent -- Toxicologie
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Cuirs et peaux -- Industrie -- Inde
Eaux usées
Pollution
Sulfate de chrome
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The authors present a review of chromium in the industry together with detailed reports of the remediation of chromium pollution by wetlands.
Chromium is the buzzword of both tanners and environmental scientists. Because ithas several advantageous properties over other tanning agents, 80-90 % of leather today is tanned with chromium salts (Basic Chrome Sulphate). In pre-tanning processes hides and skins are soaked ; hair and keratinous debris in the epidermis are removed and bated. The pelts are then acid pickled to prepare for addition of BCS salts. After full penetration of BCS in the pelts, pH is raised slightly by adding weak alkaline salts. This accelerates the de-protonation of hexaquachromium (III) complexes forming more stable µ-hydroxo-µ-sulphato complexes on one hand and formation of di--tri- or oligo-nuclear complexes by the way of polymerisation on the other. The contemporary process is exclusively based on single bath procedure and utilises Cr(III) only. In contrast, the obsolete double bath process, which involved the insitu reduction of chromate [Cr(VI)], is environmentally and toxicologically hazardous.
The East Calcutta Wetlands ; currently a special conservation site (Ram Site N° 1208), at the eastern fringe of Kolkate city, West Bengal, India was contaminated by composite industrial and municipal wastewater continuously over the past years. A large volume (ca. RO 000m3 day-1) of highly contaminated effluent flows through a network of canals within the ECW ecosystem and are finally discharged into the Kultigong River, nearly 40 kms away from Calcutta city. On the journey through the canals, this composite wastewater is used for irrigating agricultural farms as well as for pisciculture in wastewater-fed fisheries. Chromium, being the most known toxic constituent of tannery effluent drawn the attention of environmental scientists, whether it has any detrimental effect on ecosystem and biota, when the effluent is used for pisciculture and agriculture.
The present study mainly focuses on the adverse effects of chromium, if any, in the abiotic and biotic components of an ecosystem when discharged to the environment. Thought it has been proved that ECW played a crucial role in ameliorating contaminated industrial effluent, thus improving water quality and minimizing the detrimental effects on biota, care still has to be taken to stop insensitive handling and wastage of this valuable mineral resource. In India, the tanning sector inflicts a heavy toll on the chromium resource, as around 30-50 % of chromium that is consumed for leather processing, flows down the drain. It would be our moralduty to check this colossal wastage and think seriously about the recovery and reuse of spent chromium from tanneries.Note de contenu : - Chromium : a unique metal of industrial importance
- Chromium and the tanning industry
- Chroium in ecosystems and biota : Chromium in wastewater - Chromium in soil and sediment - Chromium in plants - Chromium in fish - Chromium in non-edible faunaEn ligne : https://drive.google.com/file/d/1XLjNMGTqow3ODobRAVVAeHhGEbjVVwM5/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15697
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 4 (07-08/2012) . - p. 133-140[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14082 - Périodique Bibliothèque principale Documentaires Disponible PermalinkPermalinkClean bill of health and safety / Venkatasubramanian Sivakumar in LEATHER INTERNATIONAL, Vol. 217, N° 4850 (05/2015)
PermalinkCleaner processing of leather and its wastes / James Kanagaraj / Saarbrücken [Germany] : Lambert Academic Publishing (2010)
PermalinkClosed-loop liming and chrome tanning systems in full-scale wet blue manufacture, operational management, technical and environmental advantages / Richard Daniels in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 12 (12/2018)
PermalinkClosed-loop processing : management in existing tanneries and new-builds designed for purpose / Richard Daniels in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 12 (12/2019)
PermalinkComment CTC accompagne ses clients dans une démarche de développement durable ? / Jean-Claude Cannot in CTC ENTREPRISES, N° 9 (11/2008)
PermalinkPermalinkContributions of the circular economy to the leather life cycle - A theoretical review and integrative framework proposal / Ilton Marchi de Almeida in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 6 (11-12/2021)
PermalinkCorporate social responsibility and the carbon footprint of leather / Michael Redwood in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 2 (03-04/2013)
PermalinkCountry-level life cycle assessment of carbon footprint in processing of bovine upper leather / Mianhong Chen in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 6 (06/2019)
PermalinkLe Cuir à la une... / Bayer / Leverkusen [Allemagne] : Bayer (n.d.)
PermalinkLe cuir de chevreau en circuit court de Billy Tannery / Hélène Borderie in LEATHER FASHION DESIGN (LFD), N° 5 (02/2020)
PermalinkCuZnAl mixed oxides derived from hydrotalcites as adsorbents of leather dye acid red 357 / Renata Daiane Sulkovski in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 6 (11-12/2020)
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