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Titre : Tannery waste to biogas Type de document : texte imprimé Auteurs : Jayna Pessuto, Auteur ; Marcelo Godinho, Auteur ; Aline Dettmer, Auteur Année de publication : 2016 Article en page(s) : p. 37-40 Langues : Anglais (eng) Catégories : Biogaz
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Déchets -- Valorisation
Déchets industriels -- Recyclage
Energie -- Récupération
Tannage -- DéchetsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The treatment and the correct disposal of waste is a global
concern. It may generate numerous consequences for the environment and for society. It is estimated that the Brazilian leather industry generates more than 202,000t of leather waste tanned with chromium a year,
Anaerobic digestion (AD) can be a promising alternative for the treatment of this waste since it converts waste into energy (biogas). Biogas is composed of methane (60%), carbon dioxide (40%), and trace amounts of water vapour, hydrogen sulphide and ammonia. It is an odourless and colourless gas that produces a blue flame when burned, similar to the one of liquefied petroleum gas. Among the main applications of biogas, heat production, steam production, and combined electricity and heat production can be mentioned.
The conversion of complex organic matter to methane by the AD process requires a consortium of microorganisms. It comprises several groups of anaerobic microorganisms that interact in a metabolic manner.
The substrates most often employed for waste conversion into energy are manure (54%), sewage sludge (22%) and municipal solid waste (11%). In order to improve the AD process, other residues are added to the process: industrial waste (41%), agricultural waste (23%) and municipal waste (20%) being the most common ones.
Co-digestion is defined as the anaerobic treatment of a mixture of at least two different substrates in order to increase the efficiency of the AD process. It maltes it possible to adjust the C/N ratio.Note de contenu : - Content of organic carbon, total solids content and percentage reduction after AD process En ligne : https://drive.google.com/file/d/1jSOI-W_Gg9uyHdHajuQRUi1CQoiPPF2z/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26840
in LEATHER INTERNATIONAL > Vol. 217, N° 4864 (09/2016) . - p. 37-40[article]Réservation
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