Sorption of arsenite and arsenate on ferrihydrite: Effect of organic and inorganic ligands
Abstract
We studied the sorption of As(III) and As(V) onto ferrihydrite as affected by pH, nature and concentration of organic [oxalic (OX), malic (MAL), tartaric (TAR), and citric (CIT) acid] and inorganic [phosphate (PO(4)), sulphate (SO(4)), selenate (SeO(4)) and selenite (SeO(3))] ligands, and the sequence of anion addition. The sorption capacity of As(III) was greater than that of As(V) in the range of pH 4.0-11.0. The capability of organic and inorganic ligands in preventing As sorption follows the sequence: SeO(4) ≈ SO(4) < OX < MAL ≈ TAR < CIT < SeO(3) ≪ PO(4). The efficiency of most of the competing ligands in preventing As(III) and As(V) sorption increased by decreasing pH, but PO(4) whose efficiency increased by increasing pH. In acidic systems all the competing ligands inhibited the sorption of As(III) more than As(V), but in alkaline environments As(III) and As(V) seem to be retained with the same strength on the Fe-oxide. Finally, the competing anions prevented As(III) and As(V) sorption more when added before than together or after As(III) or As(V).
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In acidic environments, all the ligands prevented the sorption of arsenite on ferrihydrite more than that of arsenate, but in alkaline systems, arsenite and arsenate seemed to be retained with the same strength.
“In acidic environments, all the ligands prevented the sorption of arsenite on ferrihydrite more than that of arsenate, but in alkaline systems, arsenite and arsenate seemed to be retained with the same strength.”
From Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments (2016) · cites this paper as [52]
The efficiency of most of the competing anions in preventing the sorption of the metalloids decreased by increasing the pH.
“The efficiency of most of the competing anions in preventing the sorption of the metalloids decreased by increasing the pH.”
From Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments (2016) · cites this paper as [52]
Cites
Mechanisms of Selenate Adsorption on Iron Oxides and Hydroxides
Peak, D., & Sparks, D. L. (2002) · Environmental Science & Technology · doi:10.1021/es0156643 · Cited by 336 · see citing works
Violante, A., Gaudio, S. D., Pigna, M., Ricciardella, M., & Banerjee, D. (2007) · Environmental Science & Technology · doi:10.1021/es070382+ · Cited by 131 · see citing works
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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 · see citing works
Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments
Caporale, A. G., & Violante, A. (2016) · Current Pollution Reports · doi:10.1007/s40726-015-0024-y · Cited by 369 · see citing works
Self-citationElucidating Mechanisms of Competitive Sorption at the Mineral/Water Interface
Violante, A. (2013) · Advances in Agronomy · doi:10.1016/b978-0-12-405942-9.00003-7 · Cited by 80 · see citing works
Self-citationHeredia, A., Gómez Avila, J., Vinuesa, A., Saux, C., Mendoza, S. M., Garay, F., & Crivello, M. (2019) · Adsorption · doi:10.1007/s10450-019-00109-2 · Cited by 18 · see citing works
- Authors
- Zhu, J., Pigna, M., Cozzolino, V., Caporale, A. G., & Violante, A.
- Affiliations
- University of Naples Federico II (IT)
- Corresponding author
- Violante, Antonio
- Venue
- Journal of Hazardous Materials
- Publisher
- Elsevier BV
- Published
- 2011-05
- Volume
- 189
- Issue
- 1-2
- Pages
- 564-571
- ISSN
- 0304-3894 (ISSN-L)
- OpenAlex
- W2011363200
- Cited by
- 127
- References
- 2
- Citations by year
- 2026: 3 · 2025: 8 · 2024: 6 · 2023: 9 · 2022: 7 · 2021: 12 · 2020: 9 · 2019: 7 · 2018: 6 · 2017: 11 · 2016: 5 · 2015: 14 · 2014: 11 · 2013: 10 · 2012: 6
- FWCI
- 7.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Hazardous Materials (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
- Keywords
- arsenate adsorption, ferrihydrite, organic ligands, inorganic ligands, phosphate, sulfate, selenate, selenite, oxalic acid, malic acid, tartaric acid, citric acid, pH effect, iron oxide adsorption, arsenic speciation
- MeSH terms
- Adsorption, Arsenates, Ferric Compounds, Inorganic Chemicals, Ligands, Organic Chemicals, Arsenites
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