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High exhaust acrylic chemistry / Anton El A'mma in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 1 (01/2003)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 1 (01/2003) . - p. 1-5 Titre : High exhaust acrylic chemistry Type de document : texte imprimé Auteurs : Anton El A'mma, Auteur Année de publication : 2003 Article en page(s) : p. 1-5 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1QrkDwuDHWU9_FUomywJ9YgMlQ7C1NDIQ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4088 [article]

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Immobilization of degradative enzyme onto collagen hydrolysate films / C. Shanthi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 1 (01/2003)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 1 (01/2003) . - p. 6-12 Titre : Immobilization of degradative enzyme onto collagen hydrolysate films Type de document : texte imprimé Auteurs : C. Shanthi, Auteur ; B. Stennett, Auteur ; Dennis C. Shelly, Auteur Année de publication : 2003 Article en page(s) : p. 6-12 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Chemical or biological degradation of chrome shavings results in collagen hydrolysate and chrome cake. To add value to the recovered collagen hydrolysate, we evaluated films, cast from this material, for immobilizing degradative enzymes. Organophosphorus hydrolase (OPH) has been shown to be effective in degrading a range of organophosphate esters. Organophosphate compounds, which are among the most toxic substances known, are used as pesticides and nerve gases. A crude extract of OPH from Flavobacterium sp. was immobilized onto collagen hydrolysate films. The collagen films were characterized by differential scanning calorimetry and water swelling behavior. The properties of the collagen hydrolysate films were compared with the films cast from commercially available gelatin. The effect of glutaraldehyde crosslinking the films on enzyme immobilization was studied. En ligne : https://drive.google.com/file/d/1aadJYItST3tLeKrZ4FFUFYUjmlSThrc-/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4089 [article]

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Ectoparasites and the leather industry / Jay R. Brown in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 1 (01/2003)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 1 (01/2003) . - p. 13-18 Titre : Ectoparasites and the leather industry Type de document : texte imprimé Auteurs : Jay R. Brown, Auteur Année de publication : 2003 Article en page(s) : p. 13-18 Note générale : Bibliogr. Langues : Américain (ame) En ligne : https://drive.google.com/file/d/1t5u4ios_kZhG7mIi0TWwCDkQTmFfSSW_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4090 [article]

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Gasification : Achieving zero waste / Warren Bowden in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 1 (01/2003)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 1 (01/2003) . - p. 19-26 Titre : Gasification : Achieving zero waste Type de document : texte imprimé Auteurs : Warren Bowden, Auteur Année de publication : 2003 Article en page(s) : p. 19-26 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Tanneries generate considerable quantities of sludge, shavings, trimmings, hair, buffing dusts and other general wastes as a natural consequence of leather production. On a daily basis, this mass of wet solid wastes can exceed the mass of hides received and processed. Tanneries are also major energy users, which according to Best Practice requires up to 30 kW of energy to "produce" a single finished hide. The waste disposed, usually to landfill, contains more than half of the energy value of coal, at 20 MJ/ kg (10 B.t.u./lb) and if recovered and converted into useful energy could satisfy all of a tannery's own heat energy requirement for leather processing. The pressures upon global landfill disposal are growing, via restrictions to disposal routes and increases to costs/ ton, in parallel with international demands to increase the use of renewable energy. The BLC Combined Drying and Gasification process accommodates both demands; by elimination of tannery solid wastes, whilst providing a combustible gas as a tax-exempt renewable energy source which the tannery can directly reuse. The ash can also be sold as chrome3+ containing ash for reconstitution. This has been achieved via pilot scale, prototype and now demonstration scale plant. These trials have illustrated that up to 70% of the intrinsic energy value of the wastes currently disposed, can be recovered as "synthesis gas" energy. This can be put to useful work, in both drying the wastes pre gasification and as an energy source for the tannery's own boilers (furnaces) CHP or electricity export from the site. At least 60% of the syngas energy recovered is surplus to the gasification process requirements and can be reused by the tannery directly. On full scale, this thermal energy available to the tannery could be equal to that thermal energy actually consumed during leather manufacture. En ligne : https://drive.google.com/file/d/1zGRMLgIrse-vl05Yp-BQexSknZT6CKW7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4091 [article]

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