TREATING LEATHER SHAVING WASTE TO DECREASE ITS ENVIRONMENTAL IMPACT
Nasr, A., Gaber, M., Ali, H., Eissa, M. (2018). TREATING LEATHER SHAVING WASTE TO DECREASE ITS ENVIRONMENTAL IMPACT. EKB Journal Management System, 68(1), 75-88. doi: 10.21608/ejdr.2018.4748.1007
Ahmed Nasr; Mohamed Gaber; Hamdy Ali; Mahmoud Eissa. "TREATING LEATHER SHAVING WASTE TO DECREASE ITS ENVIRONMENTAL IMPACT". EKB Journal Management System, 68, 1, 2018, 75-88. doi: 10.21608/ejdr.2018.4748.1007
Nasr, A., Gaber, M., Ali, H., Eissa, M. (2018). 'TREATING LEATHER SHAVING WASTE TO DECREASE ITS ENVIRONMENTAL IMPACT', EKB Journal Management System, 68(1), pp. 75-88. doi: 10.21608/ejdr.2018.4748.1007
Nasr, A., Gaber, M., Ali, H., Eissa, M. TREATING LEATHER SHAVING WASTE TO DECREASE ITS ENVIRONMENTAL IMPACT. EKB Journal Management System, 2018; 68(1): 75-88. doi: 10.21608/ejdr.2018.4748.1007

TREATING LEATHER SHAVING WASTE TO DECREASE ITS ENVIRONMENTAL IMPACT

Egyptian Journal of Desert Research
Article 3, Volume 68, Issue 1, June 2018, Page 75-88  XML PDF (1.45 MB)
Document Type: Original Article
DOI: 10.21608/ejdr.2018.4748.1007
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Authors
Ahmed Nasr email orcid 1; Mohamed Gaber2; Hamdy Ali2; Mahmoud Eissa3
1Department of Wool Production and Technology, Desert Research Center, Cairo, Egypt
2Department of Biochemistry, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
3Department of Wool Production and Technology, Desert Research Center, El Matareya, Cairo, Egypt
Abstract
Chrome shaving waste (CSW) is one of the largest leather tanning wastes, caused an economical and environmental loss if it did not utilize properly. This study aims to extract chromium from chrome shaving waste, by alkaline hydrolysis or incineration in order to reuse it in leather tanning. Sodium hydroxide and carbonate were used in chemical hydrolysis and compared with incineration method in chrome yielding. Twenty five sheep pelts were tanned with recovered and commercial chromium 33% basicity to compare their effects in tanning. The results showed that among alkaline treatments, caustic soda was more effective than sodium carbonate in extraction, but incineration method was the best extraction method because of its high extraction yield (99.37%). Using sugar as a reducing agent was better than sodium sulphite to prepare tanning liquor. It increased chrome yield and produced chromium sulphate 33% basicity, which are more suitable for leather tanning. Most physical and chemical properties, except fat and ash contents, were similar in leathers tanned with recovered chrome and those tanned with commercial chrome. Thus, all studied tanned leathers were suitable for using in leather manufacturing.
Keywords
chrome; Physical properties; recovery; tanning
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