Recovery of Cr from chrome-containing leather wastes to develop aluminum-based composite material along with Al₂O₃ ceramic particles: An ingenious approach

Abstract Leather industries cause soil pollution in terms of leather wastes. Chrome-containing wastes (CCLW) also various types pollutions such as air and pollution. The utilization CCLW the development aluminum-based composite is emerging area synthesis materials. In this study, chromium(Cr) form collagen powder was extracted from CCLW. Extracted ball milled with alumina particles for 12.5, 25, 50, 75, 100 h. average density mixture ball-milled reduced by about 1.20% after milling stir casting technique employed to develop material. reinforced material showed a fair distribution reinforcement compared without Tensile strength hardness improved 35.53 46.61%, respectively, using 5% aluminum alloy. However, ductility toughness were reduced. Corrosion weight loss thermal expansion Al/5% collagen/5% found be 0.022 mg 5.44 mm 3 , respectively. X-Ray diffraction presence Al, Al 2 O Cr phases. hard phases responsible enhancing tensile composite. developed can utilized fabrication engine blocks, connecting rods, piston rings.