Transformation of Chrome Leather Waste into Nanofunctional Composite for the Remediation of Tannery Dye Wastewater.

ABSTRACT: The leather industry faces inevitable challenges in producing large volumes of chrome-containing solid waste as well as dye-containing colored wastewater. In this study, chrome-tanned leather shaving (CTLS), one of the major hazardous tannery solid wastes, was upcycled into a chromic oxide nanoparticles composite (Cr₂O₃@CTLS) through a thermochemical process and utilized to treat toxic tannery dye wastewater. The material exhibited a high fixed carbon content (69.56 ± 0.03%), indicating efficient carbonization. Fourier transform infrared (FTIR) analysis revealed several functional groups in Cr₂O₃@CTLS, while TGA showed minimal weight loss up to 450 °C (12%), reflecting the good thermal stability of the nanocomposite. Scanning electron microscopy

SUBMITTER: Akhi AR 

PROVIDER: S-EPMC12547754 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature