Oil extracted from spent coffee grounds as a fatliquor in leather tanning
Elshaer, M., Nasr, A., Kassem, S., Alfawal, G., Abd-elhamed, W., Abd-Elrahem, M. (2025). Oil extracted from spent coffee grounds as a fatliquor in leather tanning. EKB Journal Management System, 68(8), 123-133. doi: 10.21608/ejchem.2024.323503.10506
Mohammed Ahmed Elshaer; Ahmed Nasr; Sameh Taha Kassem; Gamal Alfawal; Waled Abd-elhamed; Mohamed Awad Abd-Elrahem. "Oil extracted from spent coffee grounds as a fatliquor in leather tanning". EKB Journal Management System, 68, 8, 2025, 123-133. doi: 10.21608/ejchem.2024.323503.10506
Elshaer, M., Nasr, A., Kassem, S., Alfawal, G., Abd-elhamed, W., Abd-Elrahem, M. (2025). 'Oil extracted from spent coffee grounds as a fatliquor in leather tanning', EKB Journal Management System, 68(8), pp. 123-133. doi: 10.21608/ejchem.2024.323503.10506
Elshaer, M., Nasr, A., Kassem, S., Alfawal, G., Abd-elhamed, W., Abd-Elrahem, M. Oil extracted from spent coffee grounds as a fatliquor in leather tanning. EKB Journal Management System, 2025; 68(8): 123-133. doi: 10.21608/ejchem.2024.323503.10506

Oil extracted from spent coffee grounds as a fatliquor in leather tanning

Egyptian Journal of Chemistry
Volume 68, Issue 8, August 2025, Page 123-133  XML PDF (1.65 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2024.323503.10506
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Authors
Mohammed Ahmed Elshaer1; Ahmed Nasr email orcid 2; Sameh Taha Kassem2; Gamal Alfawal1; Waled Abd-elhamed1; Mohamed Awad Abd-Elrahem3
1Department of Agricultural Biochemistry, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt.
2Wool Production and Technology Department, Desert Research Center, Cairo, Egypt
3Biochemistry Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
Abstract
This study explores the potential of using spent coffee grounds (SCGs) oil as an eco-friendly alternative to traditional fish-oil in leather fatliquoring. SCGs oil was extracted and converted into an aqueous grease then used at various concentrations (5%, 10%, 15%, 20%) for application to sheep wet-blues. A fish-oil group served as the control. The extracted SCGs oil (12.12% yield) exhibited a promising fatty acid profile (47% saturated, 52.8% unsaturated), suitable for leather fatliquoring. Analysis of the resulting leathers revealed comparable quality between SCGs and fish-oil at equivalent concentrations. Notably, SCGs leathers displayed a more homogeneous structure, potentially enhancing physical properties. The findings suggest that SCGs fatliquor offers good filling and mechanical properties, with an optimal concentration around 10% for maximizing overall leather quality. While chemical properties showed minimal differences between SCGs and fish-oil leathers, SCGs fatliquor emerged as a viable and sustainable alternative. This approach promotes economic and environmental benefits by utilizing waste materials in the leather tanning process.
Keywords
Characterization; Extraction; Tanning; Preparing; Physical properties
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