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Gold and Silver Uptake and Nanoprecipitation on Calcium Alginate Beads
Abstract
Calcium alginate beads were investigated for their biosorption performance in the removal of gold and silver from aqueous solutions. It was found that uptake capacities were significantly affected by the solution pH, with optimum pH values of 2 and 4 for gold and silver, respectively. Kinetic and isotherm experiments were carried out at the optimum pH. The maximum uptake capacities were 290 mg/g for Au and 52 mg/g for Ag. FTIR analysis indicated that both carboxylic and hydroxylic functional groups in alginate beads are involved in the metal binding and later reduction of gold (+3) and silver (+1) to gold (0) and silver (0). SEM and X-ray diffraction confirmed the formation of gold and silver nanoparticles.
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Citations
Cited by
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Bio-derived materials as a green route for precious & critical metal recovery and re-use
Dodson, J. R., Parker, H. L., Muñoz García, A., Hicken, A., Asemave, K., Farmer, T. J., He, H., Clark, J. H., & Hunt, A. J. (2015) · Green Chemistry · doi:10.1039/c4gc02483d · Cited by 278
Microbial Biosorption of Metals
(2011) · Springer eBooks · doi:10.1007/978-94-007-0443-5 · Cited by 269
Removal of Rare Earth Elements and Precious Metal Species by Biosorption
Andrès, Y., & Gérente, C. (2011) · Microbial Biosorption of Metals · doi:10.1007/978-94-007-0443-5_8 · Cited by 20
Metadata
- Authors
- Torres, E., Mata, Y. N., Blázquez, M. L., Muñoz, J. A., González, F., & Ballester, A.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-07-15
- Volume
- 21
- Issue
- 17
- Pages
- 7951-7958
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W1997907717
- Cited by
- 174
- References
- 0
- FWCI
- 5.95
- Type
- journal article
- Language
- en
- Open access
- closed
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- Torres, E., Mata, Y. N., Blázquez, M. L., Muñoz, J. A., González, F., & Ballester, A. (2005). Gold and Silver Uptake and Nanoprecipitation on Calcium Alginate Beads. Langmuir. https://doi.org/10.1021/la046852k
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
