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Recovery and reuse of chromium from leather shavings: formation of chromium-containing ceramic pigments

Berry, F.J.; Costantini, N. and Smart, L.E. (2001). Recovery and reuse of chromium from leather shavings: formation of chromium-containing ceramic pigments. Journal of the American Leather Chemists Association, 96(2) pp. 46–53.

URL: http://www.leatherchemists.org/alca_search.asp
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Abstract

Chromium was extracted from leather shavings by treatment with a protease enzyme using either CaO, NaOH, MgO or NH4(OH) as alkaline agents during the treatment. The pigments known as chrome-tin pink and cobalt-chromite green and of composition CaSnSiO5.xCr2O3 and Cr2CoO4 respectively, were synthesized using chromium obtained from the enzyme digested leather shavings. The phase evolution and characterization of the materials has been performed by powder X-ray diffraction, FT-IR, and UV measurements. Colour measurements showed the chrome-tin pink to be identical to that made from pure Cr2O3. The cobalt-chromite green showed a gradation of colour as a function of firing temperature and on the type and amount of alkaline agent used during the extraction of chromium.

Item Type: Journal Article
ISSN: 0002-9726
Extra Information: URL takes the user to the main page--Not directly to article.
Academic Unit/Department: Science > Life, Health and Chemical Sciences
Item ID: 2496
Depositing User: Lesley Smart
Date Deposited: 17 Jul 2006
Last Modified: 02 Dec 2010 19:47
URI: http://oro.open.ac.uk/id/eprint/2496
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