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Biosorption of uranium and lead by Streptomyces longwoodensis
Abstract
Biosorption of uranium and lead by lyophilized cells of Streptomyces longwoodensis was examined as a function of metal concentration, pH, cell concentration, and culture age. Cells harvested from the stationary growth phase exhibited an exceptionally high capacity for uranium (0.44 g U/g dry weight) at pH 5. Calculated values of the distribution coefficient and separation factor indicated a strong preference of the cell mass for uranyl ions over lead ions. The specific uranium uptake was similar for the cell wall and the cytoplasmic fraction. Uranium uptake was associated with an increase in hydrogen ion concentration, and phosphorus analysis of whole cells indicated a simple stoichiometric ratio between uranium uptake and phosphorus content. It is proposed that metal ions are bound to phosphodiester residues present both in the cell wall and cytoplasmic fractions. Based on this model, it was shown that uranium accumulation exhibits a maximum at pH 4.6 that is supported by experimental data from previous investigations.
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Citations
Cited by
Volesky, B., & Holan, Z. R. (1995) · Biotechnology Progress · doi:10.1021/bp00033a001 · Cited by 3,326
Microbial and plant derived biomass for removal of heavy metals from wastewater
Ahluwalia, S. S., & Goyal, D. (2007) · Bioresource Technology · doi:10.1016/j.biortech.2005.12.006 · Cited by 1,586
Heavy metal accumulation by bacteria and other microorganisms
Gadd, G. M. (1990) · Experientia · doi:10.1007/bf01935534 · Cited by 503
Macaskie, L. E. (1991) · Critical Reviews in Biotechnology · doi:10.3109/07388559109069183 · Cited by 234
Bioaccumulation of palladium by Desulfovibrio desulfuricans
Yong, P., Rowson, N. A., Farr, J. P. G., Harris, I. R., & Macaskie, L. E. (2002) · Journal of Chemical Technology & Biotechnology · doi:10.1002/jctb.606 · Cited by 125
Metadata
- Authors
- Friis, N., & Myers‐Keith, P.
- Venue
- Biotechnology and Bioengineering
- Publisher
- Wiley
- Published
- 1986-01
- Volume
- 28
- Issue
- 1
- Pages
- 21-28
- ISSN
- 0006-3592 (ISSN-L)
- 1097-0290
- OpenAlex
- W2038612574
- Cited by
- 229
- References
- 0
- FWCI
- 1.47
- Type
- journal article
- Language
- en
- Open access
- closed
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- Friis, N., & Myers‐Keith, P. (1986). Biosorption of uranium and lead by Streptomyces longwoodensis. Biotechnology and Bioengineering. https://doi.org/10.1002/bit.260280105
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