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JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) . Vol. LXXXVI, N° 3Mention de date : 03/1991Paru le : 01/03/1991 |
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Ajouter le résultat dans votre panierTreatment and disposal of waste water for a tannery processing wet-blues to suede / B. G. S. Prasad in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 3 (03/1991)
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Titre : Treatment and disposal of waste water for a tannery processing wet-blues to suede Type de document : texte imprimé Auteurs : B. G. S. Prasad, Auteur Année de publication : 1991 Article en page(s) : p. 87-92 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A survey was carried out in a tannery processing wet-blue hides and skins into suedes for upper and garment leathers. It was found that about 30-35 litres of waste water was produced per kg of hide processed. The waste water from the fatliquoring and dyeing operations is the strongest. The BOD, suspended solids and total chromium content of the composite waste water varied from 900 to 1300 mg/l, 1640 to 2250 mg/l and 180 to 220 mg/l respectively.
Experiments showed that a reduction of 27% in BOD and 60% of suspended solids could be achieved by settling for 4-5 hours. Treatment with 400-500 mg/l of lime reduced the BOD to 300 mg/l and suspended solids to 320 mg/l and the chromium was removed to below the limit of detection. The lime-treated effluent can be further treated in an aerated lagoon of 5 days’ detention to bring the BOD down to about 30mg/l.
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Code-barres Cote Support Localisation Section Disponibilité 006878 - Périodique Bibliothèque principale Documentaires Disponible An overview of testing of leather for flame/glow retardance / Kadir Dönmez in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 3 (03/1991)
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Titre : An overview of testing of leather for flame/glow retardance Type de document : texte imprimé Auteurs : Kadir Dönmez, Auteur ; Waldo E. Kallenberger, Auteur Année de publication : 1991 Article en page(s) : p. 93-109 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Various testing methods have been explored for the evaluation of the flame resistance of leather, but much further investigation is steel needed. Preliminary historical and descriptive background for the two primary flame-resistance test methods on leathers treated with various flame-retardant chemicals. First the test methods must be addressed in terms of their advantages and limitations.
Flame/glow retardance depends upon the disruption of the burning process. Four general mechanisms (thermal, coating, gas, chemical) have been proposed to explain the means by which chemicals retard flaming. The flammability of leather must be tested in order to demonstrate compliance with governing regulation in automobile, aircraft and upholstery applications as well as to show the consumer that leather is safe. The two major test methods chosen for this application are the vertical-flame test and the oxygen-index test. The oxygen-index-test method has been developed to minimize operator variation, and to make possible more reliable comparisons of test data from other sources and even comparisons against other materials.
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Code-barres Cote Support Localisation Section Disponibilité 006878 - Périodique Bibliothèque principale Documentaires Disponible The finishing of water-repellent leather / H. Träubel in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 3 (03/1991)
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Titre : The finishing of water-repellent leather Type de document : texte imprimé Auteurs : H. Träubel, Auteur ; W. Kaltenbrunner, Auteur ; B. Zorn, Auteur Année de publication : 1991 Article en page(s) : p. 107-119 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1d6XrE1IxUbL6z-GXYRrYTu5SpZBRt5a0/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8551
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Code-barres Cote Support Localisation Section Disponibilité 006878 - Périodique Bibliothèque principale Documentaires Disponible
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