Azardirachta indica : A green material for curing of hides and skins in leather processing / Vasudevan Preethi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 7 (07/2006)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 7 (07/2006) . - p. 266-273 Titre : Azardirachta indica : A green material for curing of hides and skins in leather processing Type de document : texte imprimé Auteurs : Vasudevan Preethi, Auteur ; Veerapan Rathinasamy, Auteur ; Chandra Babu Narasimhan Kannan, Auteur ; Praveen Kumar Sehgal, Auteur Année de publication : 2006 Article en page(s) : p. 266-273 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : TAMIL N Common salt (Sodium chloride) in solid form is extensively used in preservation of raw hides and skins. A large quantity of this material is discharged in the liquid effluent as Total Dissolved Solids (TDS) during soaking operation in leather processing. In Central Leather Research Institute (CLRI), Chennai, we have attempted to replace common salt with an herbal-based formulation prepared using Azardirachta indica (common Indian name - Neem) in preservation of raw goatskins. After successful trials in CLRI, the material has been successfully field tested at a rural location in India where large quantity of goatskins is collected by local people for trading. The physical, chemical and subjective assessment of wet blues and crust leathers from the skins prepared with this material compare favorably with salt preserved skins. Use of Azardirachta indica in preservation also offers considerable reduction of TDS in liquid tannery effluent and material after the usage can be scrapped off from the skins and composted to get garden manure, thereby offering a better solution for its disposal. En ligne : https://drive.google.com/file/d/1bxztT4KNjHQrcOZCVy7C4jqzYHeZ36Mz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3996 [article]

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Efficient salt recovery and total dissolved solids reduction in leather processing / Vasudevan Preethi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 4 (04/2006)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 4 (04/2006) . - p. 117-122 Titre : Efficient salt recovery and total dissolved solids reduction in leather processing Type de document : texte imprimé Auteurs : Vasudevan Preethi, Auteur ; Praveen Kumar Sehgal, Auteur ; R. Ramesh, Auteur ; Chandra Babu Narasimhan Kannan, Auteur Année de publication : 2006 Article en page(s) : p. 117-122 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A major portion of total dissolved solids (TDS) in leather processing is contributed by common salt (sodium chloride) coming into the effluent during soaking of salt preserved raw hides and skins. If we can prevent or reduce the common salt going into water in the soaking operation, then TDS contributed by sodium chloride can be reduced considerably. TDS reduction is feasible when preserved skins are shaken intermittently in a saturated brine solution. The salt present in the preserved skins is removed and settles to the bottom of the saturated brine solution. The removed salt (from skin) is collected after decantation of the saturated brine solution. The collected salt is washed with fresh saturated brine solution and dried. It can be reused for preservation of skins. The contaminated saturated brine solution is regenerated and recycled again for the next operation. En ligne : https://drive.google.com/file/d/1RzN1VAb8-QDDrSzwpWts4KZvLIhGtmaN/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4014 [article]

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Investigation on treatment of tannery effluent through ozonation / Vasudevan Preethi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 9 (09/2009)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 9 (09/2009) . - p. 302-307 Titre : Investigation on treatment of tannery effluent through ozonation Type de document : texte imprimé Auteurs : Vasudevan Preethi, Auteur ; K. Iyappan, Auteur ; N. Balasubramanian, Auteur ; C. Srinivasakannan, Auteur Année de publication : 2009 Article en page(s) : p. 302-307 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biodégradation Cinétique chimique Cuirs et peaux -- Industrie -- Aspect de l'environnement Eaux usées -- Epuration Eaux usées -- Recyclage Ozonation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Experiments were conducted on treatment of leather effluent by ozonation covering wide range in operating conditions. The influence of parameters such as influent pH, ozone flow rate and initial effluent concentration on ozonation efficiency has been critically examined. A maximum of COD removal efficiency of 92% has been achieved under optimum operating conditions. The ozonation of leather effluent has been modeled using pseudo first order kinetics. It has been observed from the present investigation that the biodegradability index of the tannery effluent has increased from an initial value of 0.18 to 0.49 due to ozonation indicating favorable adaptation of the technique as primer for biochemical methods. En ligne : https://drive.google.com/file/d/1DBR_2hghY86GXUypvjjNjgaJSIuvMA5y/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17834 [article]

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