Competitive sorption of metal ions onto a north-eastern France soil. Isotherms and XAFS studies

Flogeac, Karine; Guillon, Emmanuel; Aplincourt, Michel

doi:10.1016/j.geoderma.2007.01.016

Cited by 58 publications

(34 citation statements)

References 34 publications

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“…Contamination with Cu, Cr, Zn, As, Cd, Hg, and Pb occurred near the Ecological Reserve area of Buenos Aires, close to an automobile cemetery. Moreover, industrialized areas are affected by high Cu, Zn, and Cr concentrations in industrial effluents [9].…”

Section: Introductionmentioning

confidence: 99%

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Branzini

Zubillaga

2012

Applied and Environmental Soil Science

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Remediation strategies are capable to mitigate negative effects of heavy metals (HMs) on soils. The distribution of cooper (Cu), zinc (Zn), and chromium (Cr) was evaluated in a contaminated soil after adding biosolid compost (BC) and phosphate fertilizer (PF). A greenhouse assay and sequential extraction procedure were performed to determine the fractionation of HM in contaminated and remediated soil. In BC treatment, among 4 to 6% of Cu was associated with soil humic substances. Without amendments and with fertilizer application, Zn solubility increased by 15.4 and 8.4%, respectively, with experiment time. Although Cr was significantly adsorbed to the inorganic fraction, with compost application there was a transfer to organic fraction. A single amendment application is not suitable for immobilizing all metals of concern, because there are diverse union's behaviors between HM and soil matrix. As the organic matter and phosphate fertilizer were effective in reducing mobility of Cu, the organic matter was more effective in the immobilization of Cr, and inorganic amendment induced the Zn precipitation, results from this pilot study suggest a combined use of these two amendments for soil remediation strategies. However, liming may be further needed to prevent soil acidification on longer time scales. Also, we propose the use of chemical and biological remediation strategies for potential improvement of effectiveness.

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Section: Introductionmentioning

confidence: 99%

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Branzini

Zubillaga

2012

Applied and Environmental Soil Science

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“…Several models have been designed to predict the fate and transport of heavy metals in soils, which consider the nature of the binding forces, and use the chemical and physical mechanisms involved in heavy metalsurface reactions (Flogeac et al, 2007). However, the fitting of the sorption isotherms to non mechanistic models, such as Freundlich and Langmuir equations, also makes it possible to extrapolate the information derived from the sorption data of a given metal-soil combination to other scenarios and to compare the results.…”

Section: Introductionmentioning

confidence: 99%

Modeling competitive metal sorption in a mineral soil

et al. 2009

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“…adsorption and surface precipitation) onto soil colloids, a mechanism strongly related to their peculiarities, such as the clay-oxideshydroxides quality and content, inorganic carbon, cation exchange capacity and pH conditions (Covelo et al, 2007;Flogeac et al, 2007;James and Bartlett, 1983;Palmer and Puls, 1994;Stewart et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Soil humic acids may favour the persistence of hexavalent chromium in soil

Leita

Margon

Pastrello

et al. 2009

Environmental Pollution

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The interaction between hexavalent chromium Cr(VI), as K 2 CrO 4 , and standard humic acids (HAs) in bulk solution was studied using three complementary analytical methods: UV-Visible spectroscopy, X-ray absorption spectroscopy and differential pulse stripping voltammetry. The observed UV-Vis and X-ray absorption spectra showed that, under our experimental conditions, HAs did not induce reduction of Cr(VI) to its trivalent chemical form. The interaction between Cr(VI) and HAs has rather led to the formation of Cr(VI)-HAs micelles via supramolecular chemical processes. The reported results could contribute towards explaining the relative persistence of ecotoxic hexavalent chromium in soils.

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Competitive sorption of metal ions onto a north-eastern France soil. Isotherms and XAFS studies

Cited by 58 publications

References 34 publications

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Modeling competitive metal sorption in a mineral soil

Soil humic acids may favour the persistence of hexavalent chromium in soil

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