Hazardous Waste Management of Buffing Dust Collagen

Abstract

Buffing Dust Collagen (BDC) is a hazardous waste product of chromium tanning bovine hides. The aim of this study was to investigate whether BDC has the desirable properties required of modern fillers. The microstructural properties of BDC were characterized by elemental analysis (N, Cr2O3) of dry residue and scanning electron microscopy (SEM). The BDC was applied (5 to 30 parts by weight) to styrene butadiene rubber (SBR), obtaining SBR-BDC composites. The physicochemical properties of the SBR-BDC composites were examined by Fourier transform infrared analysis, SEM, UV–Vis spectroscopy, swelling tests, mechanical tests, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The biodegradability of the SBR-BDC composites and their thermo-oxidative aging were also investigated. The filler contributed to increase the cross-link density in the elastomer structure, as evidenced by enhanced mechanical strength. The introduction of a filler into the elastomer structure resulted in an increase in the efficiency of polymer bonding, which was manifested by more favorable rheological and mechanical parameters. It also influenced the formation of stable interfacial bonds between the individual components in the polymer matrix, which in turn reduced the release of compact chromium in the BDC filler. This was shown by the absorption bands for polar groups in the infrared analysis and by imaging of the vulcanization process.

Zinc Oxide Nanoparticle Reinforced Waste Buffing Dust Based Composite Insole and Its Antimicrobial Activity

“…In addition, a new peak with higher intensity also attributed at ~1000 cm -1 due to the presence of disubstituted alkenes [33]. All of the aforementioned observations confirmed strong chemical interaction between buffing dust and ZnONPs with the help of NRL.…”

Fabrication of LLDPE based biodegradable composite incorporated with leather shavings and buffing dust: An approach for waste management

“…A small peak at 2930 cm −1 showed C‐H bonding, which confirms the presence of collagen contents in leather buffing. Denser peaks for LB were observed at 1002, 1460 and 1667 cm −1 respectively, which represents C‐O or C‐H bending, and indicated the existence of amino acids in collagen contents 25,26 . The existence of collagen components in LS was confirmed through a sharp peak at 2911 cm −1 , which demonstrates C‐H bonding.…”

“…Denser peaks for LB were observed at 1002, 1460 and 1667 cm À1 respectively, which represents C-O or C-H bending, and indicated the existence of amino acids in collagen contents. 25,26 The existence of collagen components in LS was confirmed through a sharp peak at 2911 cm À1 , which demonstrates C-H bonding. Denser peaks showed at 1037, 1440, 1578 and 1657 cm À1 respectively for LS and the vibrations were similar as LB since both are leather fibers.…”

Utilization of Eco-Friendly Waste Generated Nanomaterials in Water-Based Drilling Fluids; State of the Art Review

“…Food waste is a major global issue that is caused by factors including poor food processing operations and management, inadequate household planning of food consumption, and over preparation of food in the food and beverage industry [ 44 , 45 ]. Nevertheless, the problem of food wastage may be meaningfully addressed if the waste can be utilized and reapplied to different applications.…”