Abstract
Aim: To optimize conditions for maximum recovery of protein from wet blue as large quantities of chromium containing biological solid wastes are generated in the tanning industry which poses environmental hazard. The chromium recovery from this acidic (pH ≃ 3. 5) solid waste is necessary for environmental protection and economic reasons. This study therefore focuses on the conditions that facilitate the optimum recovery of protein from the chrome - tanned biological matrix of tannery with minimum protein loss usin g H 2 SO 4. Methodology: The Chrome - tanned skin (wet blue) specimen before and after different concentrations of acid treatment were characterized for their mechanical property and thermal stability with a view to observe chemical and morphological characteri stics changes by Fourier Transform Infra - Red spectroscopy and Scanning Electron Microscopy respectively. The modification in functional group and chemical composition of the samples is correlated with that of
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