| Titre : |
Electro-oxidation of saline wastewater from tannery and reuse of recovered salt |
| Type de document : |
texte imprimé |
| Auteurs : |
P. Vijayalakshmi, Auteur ; P. Saravanan, Auteur ; Raghavan Chandrasekar, Auteur ; S. Sundarapandiyan, Auteur ; G. Rajeswari, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 384-391 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuirs et peaux
Tannage
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The objective of this work is to treat the saline wastewater from tanneries to recover salt and to study the reuse of the recovered salt. Soak liquor from the tannery was treated electrochemically using graphite electrodes. The reduction in TKN, protein and COD was 78.52%, 83.02% and 79.35% respectively and complete disinfection was also achieved. The treated soak liquor was evaporated by solar evaporation and the salt recovered used for curing of skins. Curing efficacy was assessed for a period of 32 days. The preservation efficacy of the recovered salt, in terms of moisture and bacterial population of the hides, was found to be on par with that of the hides preserved using fresh salt. Soaking wastewater of volume 1 m3 was also treated on a commercial scale. Three batches of treatment were carried out. The salt recovered was reused for preservation of raw hides. The quality of the preserved hides and the wet blue leathers were also assessed. Results of the commercial scale experiments were similar to the results of the laboratory scale experiments. Cost of treatment was about 0.68 US $ per m3. Electrochemical treatment of soak liquor was found to be effective in pollution attenuation. |
| En ligne : |
https://drive.google.com/file/d/1LbcsXqF216V1kkUgVsAYzqfDFq8vjq6H/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6387 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 11 (11/2009) . - p. 384-391
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