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Influence of Organic Anions on the Crystallization of Ferrihydrite
Abstract
Hydroxy-carboxylic acids inhibit the crystallization of ferrihydrite in the pH range 9–11 in the order citric > meso tartaric > L-tartaric ≫ lactic and favor hematite formation relative to goethite in the order L-tartaric > citric > meso tartaric > lactic. The crystal shape of hematite can change from hexagonal plates to acicular in the presence of these acids. The influence of the acids on the crystallization rises with increasing concentration and with falling pH. The effectiveness in suppressing crystallization depends on whether and how strongly the acid adsorbs on ferrihydrite and how strongly it complexes with Fe 3+ in solution. Inhibition of crystallization of hematite is believed to be due to the di- and tricarboxylic acid linking ferrihydrite particles in an immobile network. Goethite formation is suppressed by the acid complexing with Fe in solution and hindering nucleation; strongly adsorbing acids also adsorb on the nuclei and hinder further growth. Certain acids can induce hematite formation because they contain a group which acts as a template for nucleation of hematite.
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Citations
Cited by
Occurrence and Constitution of Natural and Synthetic Ferrihydrite, a Widespread Iron Oxyhydroxide
Jambor, J. L., & Dutrizac, J. E. (1998) · Chemical Reviews · doi:10.1021/cr970105t · Cited by 916
Chemical stabilization of metals and arsenic in contaminated soils using oxides–a review
Komárek, M., Vaněk, A., & Ettler, V. (2013) · Environmental Pollution · doi:10.1016/j.envpol.2012.07.045 · Cited by 602
Controls on Fe reduction and mineral formation by a subsurface bacterium
Glasauer, S., Weidler, P. G., Langley, S., & Beveridge, T. J. (2003) · Geochimica et Cosmochimica Acta · doi:10.1016/s0016-7037(02)01199-7 · Cited by 183
Xiao, W., Jones, A. M., Li, X., Collins, R. N., & Waite, T. D. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.7b05098 · Cited by 96
Rancourt, D. G., Thibault, P.-J., Mavrocordatos, D., & Lamarche, G. (2005) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2004.07.018 · Cited by 85
Metadata
- Authors
- Cornell, R. M., & Schwertmann, U.
- Venue
- Clays and Clay Minerals
- Publisher
- Cambridge University Press (CUP)
- Published
- 1979-12
- Volume
- 27
- Issue
- 6
- Pages
- 402-410
- ISSN
- 0009-8604 (ISSN-L)
- 1552-8367
- OpenAlex
- W2168269528
- Cited by
- 217
- References
- 0
- FWCI
- 1.86
- Type
- journal article
- Language
- en
- Open access
- closed
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- Cornell, R. M., & Schwertmann, U. (1979). Influence of Organic Anions on the Crystallization of Ferrihydrite. Clays and Clay Minerals. https://doi.org/10.1346/ccmn.1979.0270602
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