Chromium recycling of tannery waste through microbial fermentation
- 1 February 2004
- journal article
- Published by Oxford University Press (OUP) in Journal of Industrial Microbiology & Biotechnology
- Vol. 31 (2), 57-62
- https://doi.org/10.1007/s10295-004-0115-z
Abstract
An Aspergillus carbonarius isolate, selected from an established microbial culture collection, was used to study the biodegradation of chromium shavings in solid-state fermentation experiments. Approximately 97% liquefaction of the tannery waste was achieved and the liquid obtained from long-term experiments was used to recover chromium. The resulting alkaline chromium sulfate solution was useful in tanning procedures. A proteinaceous liquid was also obtained which has potential applications as a fertilizer or animal feed additive and has several other industrial uses. The A. carbonarius strain proved to be a very useful tool in tannery waste-treatment processes and chromium recovery in the tanning industries.Keywords
This publication has 6 references indexed in Scilit:
- Chromium(III)-Induced Structural Changes and Self-Assembly of CollagenBiochemical and Biophysical Research Communications, 2001
- Isolation and characterization of a chromium‐reducing bacterium from a chromated copper arsenate‐contaminated siteEnvironmental Microbiology, 2000
- Chromium(III) hydrolytic oligomers: their relevance to protein bindingBiochimica et Biophysica Acta (BBA) - General Subjects, 1999
- Detoxification of tannery waste liquors with an electrolysis systemEnvironmental Pollution, 1997
- Bioremediation of metal contaminationCurrent Opinion in Biotechnology, 1997
- Effect of tannin-rich leaves of oak (Quercus incana) on various microbial enzyme activities of the bovine rumenBritish Journal of Nutrition, 1988