Oil extracted from spent coffee grounds as a fatliquor in leather tanning | ||
| Egyptian Journal of Chemistry | ||
| Volume 68, Issue 8, August 2025, Pages 123-133 PDF (1.65 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2024.323503.10506 | ||
| Authors | ||
| Mohammed Ahmed Elshaer1; Ahmed Nasr* 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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