The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Reductive Dissolution and Biomineralization of Iron Hydroxide under Dynamic Flow Conditions
Abstract
Iron cycling and the associated changes in solid phase have dramatic implications for trace element mobility and bioavailability. Here we explore the formation of secondary iron phases during microbially mediated reductive dissolution of ferrihydrite-coated sand under dynamic flow conditions. An initial period (10 d) of rapid reduction, indicated by consumption of lactate and production of acetate and Fe-(II) to the pore water in association with a darkening of the column material, is followed by much lower rate of reduction to the termination of the experiment after 48 d. Although some Fe (<25%) is lost to the effluent pore water, the majority remains within the column as ferrihydrite (20-70%) and the secondary mineral phases magnetite (0-70%) and goethite (0-25%). Ferrihydrite converts to goethite in the influent end of the column where dissolved Fe(II) concentrations are low and converts to magnetite toward the effluent end where Fe(III) concentrations are elevated. A decline in the rate of Fe(II) production occurs concurrent with the formation of goethite and magnetite; at the termination of the experiment, the rate of reduction is <5% the initial rate. Despite the dramatic decrease in the rate of reduction, greater than 80% of the residual Fe remains in the ferric state. These results highlight the importance of coupled flow and water chemistry in controlling the rate and solid-phase products of iron (hydr)oxide reduction.
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Cites
Anaerobic production of magnetite by a dissimilatory iron-reducing microorganism
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Cited by
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Self-citationCompeting Fe (II)-induced mineralization pathways of ferrihydrite
Hansel, C. M., Benner, S. G., & Fendorf, S. (2005) · Environmental Science & Technology · doi:10.1021/es050666z · Cited by 619
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Kappler, A. (2005) · Reviews in Mineralogy and Geochemistry · doi:10.2138/rmg.2005.59.5 · Cited by 441
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Self-citationThe geologic history of seawater oxygen isotopes from marine iron oxides
Galili, N., Shemesh, A., Yam, R., Brailovsky, I., Sela-Adler, M., Schuster, E. M., Collom, C., Bekker, A., Planavsky, N., Macdonald, F. A., et al. (2019) · Science · doi:10.1126/science.aaw9247 · Cited by 128
Arsenic chemistry in soils and sediments
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Self-citationO’Loughlin, E. J., Boyanov, M. I., Flynn, T. M., Gorski, C. A., Hofmann, S. M., McCormick, M. L., Scherer, M. M., & Kemner, K. M. (2013) · Environmental Science & Technology · doi:10.1021/es400627j · Cited by 90
Mobilization of arsenic during one-year incubations of grey aquifer sands from Araihazar, Bangladesh
Radloff, K. A., Cheng, Z., Rahman, M. W., Ahmed, K. M., Mailloux, B. J., Juhl, A. R., Schlosser, P., & van Geen, A. (2007) · Environmental Science & Technology · doi:10.1021/es062903j · Cited by 69
Metadata
- Authors
- Benner, S. G., Hansel, C. M., Wielinga, B. W., Barber, T. M., & Fendorf, S.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-03-19
- Volume
- 36
- Issue
- 8
- Pages
- 1705-1711
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1970433028
- Cited by
- 201
- References
- 2
- FWCI
- 11.40
- Type
- journal article
- Language
- en
- Open access
- closed
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