Arid Zone Journal of Engineering, Technology and Environment (Aug 2010)
Recovery of Proteins and Chromium Complexes from Chromium – Containing Leather Waste (CCLW)
Abstract
Chromium – Containing Leather Waste (CCLW) constitutes an environmental pollution problem to leather industries disposing the waste by landfill. The waste mainly consists of collagen and chromium III complexes. This work is a design of reactors to recover gelatin, polypeptides and chromium from CCLW. The results of the experiment shows that 68% of protein, based on dry weight of leather scraps, could be recovered. Three reactors with a total volume of 18 m3 was designed to handle 10,431 kg of waste generated from the tanning industries.