Sequestration of heavy metals from soil with Fe–Mn concretions and nodules

Gasparatos, Dionisios

doi:10.1007/s10311-012-0386-y

Cited by 99 publications

(34 citation statements)

References 66 publications

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“…These correlations strongly suggest that the As present upon the Fe-Mn binary oxide surface is bonded to the Fe oxide component and not the Mn oxide. In naturally occurring Fe-Mn binary oxides, Pb is found to be associated with the Mn oxide component and As with Fe which our results are in agreement with [54].…”

Section: Binary Oxide Waste Lysimeter Trialsupporting

confidence: 91%

In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil

McCann

Peacock

Hudson‐Edwards

et al. 2018

Journal of Hazardous Materials

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In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil., Journal of Hazardous Materialshttp://dx.doi.org/10. 1016/j.jhazmat.2017.08.066 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Graphical abstractHighlights  A Fe-Mn binary oxide waste is used to remediate As contaminated soils. As(III) and As(V) adsorption capacities of 70 mg g 1 and 32 mg g 1 were determined. The bioaccessibility of total As was significantly reduced by 7.80 %  Arsenic in the contaminated soil effectively binds to the exogenous binary oxide. As(V) was sorbed by mononuclear bidentate corner-sharing with Fe. AbstractThe ability of a Fe-Mn binary oxide waste to adsorb arsenic (As) in a historically contaminated soil was investigated. Initial laboratory sorption experiments indicated that arsenite [As(III)] was oxidized to arsenate [As(V)] by the Mn oxide component, with concurrent As(V) sorption to the Fe oxide. The binary oxide waste had As(III) and As(V) adsorption capacities of 70 mg g 1 and 32 mg g 1 respectively. X-ray Absorption Near-Edge Structure and Extended X-ray Absorption Fine Structure at the As K-edge confirmed that all binary oxide waste surface complexes were As(V) sorbed by 3 mononuclear bidentate corner-sharing, with 2 Fe at ~ 3.27 Ǻ The ability of the waste to perform this coupled oxidation-sorption reaction in real soils was investigated with a 10% by weight addition of the waste to an industrially As contaminated soil. Electron probe microanalysis showed As accumulation onto the Fe oxide component of the binary oxide waste, which had no As innately. The bioaccessibility of As was also significantly reduced by 7.80 % (p < 0.01) with binary oxide waste addition. The results indicate that Fe-Mn binary oxide wastes could provide a potential in situ remediation strategy for As and Pb immobilization in contaminated soils.

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Section: Binary Oxide Waste Lysimeter Trialsupporting

confidence: 91%

In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil

McCann

Peacock

Hudson‐Edwards

et al. 2018

Journal of Hazardous Materials

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“…Arsenic in nature is commonly found as arsenite, [As(III)] at moderately and strongly reduced conditions and arsenate, [As(V)] in the aerobic environment [23]. Thus, the speciation of arsenic could be used to determine the dominant redox and pH conditions, driving the cation exchange reactions and dissolution of carbonates and silicates [4,24].…”

Section: Discussionmentioning

confidence: 99%

Natural contamination by As and heavy metals in soil, their bio-accumulation and potential sources: the case of a travertine limestone quarry, Greece

Kampouroglou

Economou-Eliopoulos

2013

Open Geosciences

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Abstract:The first mineralogical and geochemical investigation of the travertine limestone, soil and corresponding plants associated with the Neogene basin of Varnavas, NE Attica, revealed a significant enrichment in the metalloid As. The total concentrations of As ranged from 61 to 210 ppm in limestone and 33 to 430 ppm in the associated soil demonstrating a wide variation of values. Calcite is a common authigenic mineral within travertine limestone, forming fine uniform micritic aggregates, having As and Mg concentrations lower than detection limits of EDS analysis. Clastic dominated minerals are quartz (both fine-and coarse-grained), muscovite, clinochlore, illite, pyrite, galena, arsenides, rutile, sphene, zircon, REE-minerals and albite. Goethite and Fe-Mn-oxides occur between calcite grains. The presence of fossilized micro organisms, resembling foraminifera, in travertine limestone combined with hydrous Fe-Mn-oxides, suggests a possible marine transgression during the evolution of the basin. The As content in plants ranges from 1.1 to 28 ppm As in shoots, and 0.8 to 114 ppm As in roots. The translocation factor, which is defined as the ratio of metal concentration in the shoots to the roots, is relatively low (average 0.33%) suggesting that the internal transport of metals from the roots to shoots was restricted. The bioaccumulation factor, which is defined as the ratio of metal concentration in the plants to that in soil, exhibits a wide range from relatively low (5.2 -9.0% for As, Fe, Cr, Ni and Pb), much higher (56 -67% for Cu and Zn) and exceptionally high (160% for Mo). A significant correlation between the translocation factors for Fe and As may confirm that Fe-Mn oxides/hydroxides represent the major sorbing agents for As in soils. The presented data, due to As contamination in travertine limestone, soil and plants, suggest a potential environmental risk not only for that part of Greece but in general for similar depositional environments.

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“…The dissolution of Fe and Mn oxides brings about an increase in the solution concentration of the PTE that are associated -adsorbed or occluded -to these compounds. Manganese oxides are strong sorbents of PTE and act as natural sinks for contaminants (Borch et al 2010) and Fe oxides are used to sequester PTE from contaminated soils due to their strong affinity with the oxides (Gasparatos 2013;Liu et al 2014).…”

Section: Incubation Experimentsmentioning

confidence: 99%

Metal Release under Anaerobic Conditions of Urban Soils of Four European Cities

Ajmone-Marsan

Padoan

Díaz

et al. 2019

Water Air Soil Pollut

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Urban soils contamination may represent an environmental threat in view of their proximity to humans. The ecological homogenization of urban areas has been postulated and, as the sources of pollution are the same in most European cities, it is possible that soil contamination is another factor of convergence. The current climate change with consequent increase of extreme rain events may affect the mobility of potentially toxic elements (PTE) thus increasing the risks. If the soil is submerged, Eh decreases and causes the solubilization of Fe and Mn oxides, which are important carriers of PTE. We compared the release of Cu, Pb and Zn from 48 soils of four cities (namely Glasgow, Ljubljana, Sevilla and Torino) when submerged for up to 30 days. A decrease of the redox potential was observed in all soils after a few days and an increase of Mn and then Fe in solution. Cu, Pb and Zn were consequently released to the solution according to the general soil contamination. Despite the marked differences in soil properties, the reaction to anaerobiosis appeared to be similar in all samples indicating that waterlogging of urban soil contaminated with PTE may pose a serious environmental risk and substantiating the hypothesis of ecological convergence.

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Sequestration of heavy metals from soil with Fe–Mn concretions and nodules

Cited by 99 publications

References 66 publications

In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil

In situ arsenic oxidation and sorption by a Fe-Mn binary oxide waste in soil

Natural contamination by As and heavy metals in soil, their bio-accumulation and potential sources: the case of a travertine limestone quarry, Greece

Metal Release under Anaerobic Conditions of Urban Soils of Four European Cities

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