Electro-oxidation of saline wastewater from tannery and reuse of recovered salt / P. Vijayalakshmi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 11 (11/2009)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 11 (11/2009) . - p. 384-391 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 [article]

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Electrochemical oxidation and reuse of pickling wastewater from tanneries / S. Sundarapandiyan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 11 (11/2008)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIII, N° 11 (11/2008) . - p. 370-376 Titre : Electrochemical oxidation and reuse of pickling wastewater from tanneries Type de document : texte imprimé Auteurs : S. Sundarapandiyan, Auteur ; Chandra Babu Narasimhan Kannan, Auteur ; Sathya Ramalingam, Auteur ; M. C. K. Dhanaselvan, Auteur ; G. Rajeswari, Auteur Année de publication : 2008 Article en page(s) : p. 370-376 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Reuse of pickling wastewater after treating it electrochemically has been studied. Pickling wastewater has been neutralised to pH 7.0 and subjected to electrooxidation. electrooxidation has been carried out using graphite electrodes at a current density of 0.012 A/cm2 for 2 hrs. Pickling wastewater has been analysed prior to and after the treatment. Treated wastewater has been reused and the cycle continued for seven times. The pickled pelts were chrome tanned and further converted into crust leathers. Shrinkage temperature, chromium uptake and chromium distribution of wetblue were tested. Crust leathers were tested for physical chrateristics. Characteristics of treated pickling wastewater indicated that electrooxidation reduced the pollution load in terms of COD and TKN significantly. Results indicated that the recycling did not influence the characteristics of wetblue and crust leathers. En ligne : https://drive.google.com/file/d/1pKcBpKpTSRF0WGazL5Q7fREOTfKvveX7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3023 [article]

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