| Titre : |
Reduction of tannery waste volume through countercurrent reuse of process streams |
| Type de document : |
texte imprimé |
| Auteurs : |
M. Komanowsky, Auteur ; G. E. Senske, Auteur |
| Année de publication : |
1982 |
| Article en page(s) : |
p. 206-223 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Tannery effluents are expensive to treat - biologically because of their high waste loads and physiochemically because of their large volumes. Countercurrent reuse of all prechrome processing streams in a manner similar to classical multistage leaching drastically reduced the effluent volume generated in the preparation of hides for tanning (to between 1/10 and 1/20 of the present volume). Pretreatment of process streams was limited, consisting only of ammonia recovery from the bating solution, sludge separation from the unhairing effluent, and pH adjustement of the post-relime and post-bate wash waters. The resulting leathers were comparable in physical strength and visual appareance to those made conventionally , although they had a slightly less uniform coloration when dyed than conventionally produced leather. This problem was partially eliminated by adding detergent, and by increased mechanical action. This report contrasts countercurrent with conventional processing in terms of the chemical composition of the hides and of the effluents at corresponding processing stages. The benefits derived from this processing approach with regard to pollution are also discussed. |
| En ligne : |
https://drive.google.com/file/d/1M0g2XDu7fJ-ZwxEWUWyqLsBZ6arz4GBA/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17444 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XXVII (Année 1982) . - p. 206-223
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Reduction of tannery waste volume through countercurrent reuse of process streams in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XXVII (Année 1982)
