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Biotechnological recovery of carbon fibers from fiber composites that are difficult to recycle / Evelyne Konopka in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 3 (09/2022)
[article]
Titre : Biotechnological recovery of carbon fibers from fiber composites that are difficult to recycle Type de document : texte imprimé Auteurs : Evelyne Konopka, Auteur Année de publication : 2022 Article en page(s) : p. 152-154 Langues : Anglais (eng) Catégories : Aspergillus
Biotechnologie
Déchets industriels -- Elimination
Fermentation
Fibres de carbone -- Recyclage
Fibres textiles synthétiques -- Biodégradation
Recyclage organiqueIndex. décimale : 677.4 Textiles artificiels Résumé : Carbon fiber reinforced polymers (CFRP) are classified as materials with high development potential. CFRP has exceptional properties such as high stiffness and strength combined with low density. However, recovery of the carbon fibers from the surrounding matrix is difficult. Currently, industrial recycling is mainly carried out by pyrolysis. A biotechnological recycling process would be a complementary alternative. The feasibility of such a process was investigated on the basis of the metabolic activity of specific microorganisms that are able to recycle such complex materials. Note de contenu : - Recycling and waste disposal
- Biodegradation through microorganisms
- Future potential ?
- Fig. 1 : Changes in the epoxy-containing culture medium due to the influence of Aspergillus niger
- Fig. 2 : Laboratory reactor, detailed view of A. niger during fermentation process in laboratory reactor and CFRP chips used in the laboratory tests
- Fig. 3 : Pre-fermentation : epoxy matrix shows smooth surface, after 6 weeks of fermentation : epoxy matrix shows rough surface and denting is visible, indicating initial degradationEn ligne : https://drive.google.com/file/d/1iOGuJvgbIy4qzPaUPPmo3t4mx90c0nN-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38168
in CHEMICAL FIBERS INTERNATIONAL > Vol. 72, N° 3 (09/2022) . - p. 152-154[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23581 - Périodique Bibliothèque principale Documentaires Disponible Cutting by-products from car leathers / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 53 (05-06/2022)
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Titre : Cutting by-products from car leathers Type de document : texte imprimé Auteurs : Karl Flowers, Auteur Année de publication : 2022 Article en page(s) : p. 60-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Coupe
Cuir -- Déchets
Cuir dans les automobiles
Cuirs et peaux -- Déchets -- Recyclage
Géométrisation
Recyclage organiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : It is false to believe that manufacturing anything results in zero waste - unless by "zero" what you mean is when the waste can enter something called its end-of-waste cycle. These waste products can be modified by producers into valuable co-products (non-determining in the case of leather). Likewise, a company cutting car seats and trim could develop the mentality that there is the main leather cut part product and then the cutting co-products (which will also be non-determining).
This is the mentality of companies that are using the geometrisation of leather as a process design focused way of seeing the cattle hide in two parts - the leather main product and its by-products ; another name for non-determining co-product. Geometrisation, such as Kind Leather from JBS Couros for example, removes leather by-products as early in the process as possible, before they have changed into a form that determines how producers can use them.
Geometrisation is the design of a process that tries to maximise profit from all the input mass entering a cycle. Trimmings constitute a significant part of the process, with typically a tannery processing from raw to finished producing a little more than 10% - 129kg trimmings out of 1100 kgs of unsalted hide. A tannery geometrising will negate that downstream trimming by-product and those trimmings can enter the food industry as a co-product - increasing value.Note de contenu : - Collaboration
- Cutting plants
- Organic recycling
- Fig. 1 : Geometrisation of the hide - economising
- Fig. 2 : Upcycling of leather trimmings to trinkets
- Fig. 3 : Processing of end-of-life leather and leather cutting waste into composite ingredients that can be used in recycled automotive partsEn ligne : https://drive.google.com/file/d/1j34zj6EhoXxO2k4bU3ctVMNtRw7Mbh-Q/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37598
in INTERNATIONAL LEATHER MAKER (ILM) > N° 53 (05-06/2022) . - p. 60-62[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23395 - Périodique Bibliothèque principale Documentaires Disponible