Preservation of bovine hide using less salt with low concentration of antiseptic, Part II : Impact of developed formulations on leather quality and the environment / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 10 (10/2018)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 10 (10/2018) . - p. 335-343 Titre : Preservation of bovine hide using less salt with low concentration of antiseptic, Part II : Impact of developed formulations on leather quality and the environment Type de document : texte imprimé Auteurs : Majher I. Sarker, Auteur ; Wilbert Long, Auteur ; George J. Piazza ; Nicholas P. Latona ; Cheng-Kung Liu Année de publication : 2018 Article en page(s) : p. 335-343 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antiseptiques Bactéries -- Comptage Bain de trempe Chimie analytique Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Cuirs et peaux -- Conservation Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux de bovins Déchets -- Réduction Eaux usées -- Analyse Evaluation Formulation (Génie chimique) Microscopie électronique à balayage Pollution -- Lutte contre Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The traditional method for bovine hide preservation requires approximately 40-50% sodium chloride on raw hide weight or 95% saturated brine solution in case of wet salting. This salt resides in wastewater after the soaking process and generates a huge environmental pollution in the form of total dissolved solids (TDS) and chlorides (Cl-) during leather processing. The current research has developed antiseptic based hide curing formulation using 45% saturated brine solution which reduces 50% salt usage in compare to traditional method. The newly developed formulations have been found more effective in limiting microbial growth on cured hide than the conventional method preserving the bovine hide for more than 30 days. In this study, post-leather analysis e.g. grain pattern, scanning electron microscopic images, mechanical properties and organoleptic evaluation reveal that the crust leather produced from alternatively cured hides are comparable to the control obtained from traditionally preserved hide. The efficacy of the alternative system is also assessed by monitoring the environmental impacts caused by the leather processing effluents on the basis of TDS and chloride content, total solids (TS), total aerobic bacterial counts in soaking liquor, Bio-Chemical oxygen demand (BOD) and Chemical oxygen demand (COD). The environmental advantages of the alternative hide curing method are determined particularly by 50% reduction of TDS and chloride content. Therefore, this new method is feasible and industrially preferable to the traditional hide curing process. Note de contenu : - EXPERIMENTAL : Materials - Laboratory scale protocol for the alternative hide preservation - Analysis of soaking liquid generated in leather processing - Total aerobic bacterial colony count of soaking liquor - Analysis of TOC and COD in soaking liquor - BOD Analysis of soaking liquor - Tanning of cured hides - Evaluation of leather quality - Microscopic imagining - RESULTS AND DISCUSSION : Aerobic bacterial colony count determination - Chloride content determination - Determination of TOC and COD in soaking liquor - Determination of BOD - Determination of solid polluants - Quality determination of crust leather - Grain surface pattern study - Surface image of crust leather using scanning electron microscope - Determination of mechanical properties of leather - Subjective evaluation of leather En ligne : https://drive.google.com/file/d/1B7igaBkCvu9Oiy-sIBEL1uBDEn0ZF64o/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31097 [article]

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