Modeling competitive metal sorption in a mineral soil

Vidal, Miquel; Santos, Maria J.; Abrão, Taufik; Rodríguez, J.; Rigol, Anna

doi:10.1016/j.geoderma.2008.11.040

Cited by 86 publications

(51 citation statements)

References 27 publications

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“…The results of the model experiment from singlemetal sorption in Chernozem and Fluvisol confirmed the well-known fact that soil sorption decreased in the order Pb > Cu > Zn > Cd, which was previously reported by other authors (Vidal et al 2009;Trakal et al 2011). In Cambisol sorption decreased in order Pb ≈ Zn > Cu > Cd.…”

Section: Resultssupporting

confidence: 88%

“…It is a major process responsible for the fate of trace elements in soils, since the mobility of trace elements is directly related to their partitioning between the soil solid phase and soil solution in equilibrium (Vidal et al 2009). This process is often described by the sorption isotherm, which describes the equilibrium of the sorption of a material at a surface at constant temperature.…”

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confidence: 99%

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A model experiment: competitive sorption of Cd, Cu, Pb and Zn by three different soils

Zemanová¹,

Trakal

Ochecova³

et al. 2014

Soil & Water Res.

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Zemanová V., Trakal L., Ochecová P., Száková J., Pavlíková D. (2014) The results of the model experiment confirmed that the sorption from single-metal solution was more effective than sorption under multi-metal conditions, due to competitive effects. In all tested soils sorption of Cd, Cu and Zn decreased with the rate of other competitive metals; the Pb sorption was not affected by other competitive metals in solutions. Moreover, during multi-metal sorption, Zn was significantly desorbed in Cambisol. In general, sorptions of Cu, Pb and Zn were greater in uncontaminated soil compared to contaminated soils. Clear trend of impact of the contamination on Cd sorption was not observed. The results showed the sorption decreasing in order Chernozem > Fluvisol > Cambisol. The sorption was the greatest in uncontaminated soil with low mobility of studied metals.

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Section: Resultssupporting

confidence: 88%

mentioning

confidence: 99%

A model experiment: competitive sorption of Cd, Cu, Pb and Zn by three different soils

Zemanová¹,

Trakal

Ochecova³

et al. 2014

Soil & Water Res.

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“…Sorption. The sorption of metals in soils was evaluated from single-and multi-element metal solutions as a function of their initial concentrations (Vidal et al 2009). For all experiments, Freundlich and Langmuir isotherms were used and compared.…”

Section: Resultsmentioning

confidence: 99%

“…Sorption efficiency as a major process responsible for the fate of metals in soils is usually based on laboratory batch experiments aimed to quantify the distribution coefficient, an operational parameter that relates the amount of metal sorbed in the soil solid phase to the metal concentration in the soil solution at equilibrium (Vidal et al 2009). In order to describe the sorption behavior of metals onto the soil, several models (empirical/ mechanistic), which describe the distribution of the metal between the solid and the liquid phases, were proposed (Bradl 2004).…”

mentioning

confidence: 99%

Biochar application to metal-contaminated soil: Evaluating of Cd, Cu, Pb and Zn sorption behavior using single- and multi-element sorption experiment

Trakal¹,

Komárek²,

Száková³

et al. 2011

PLANT SOIL ENVIRON

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The aim of this study was to evaluate metals (Cd, Cu, Pb and Zn) sorption behavior after biochar application into a metal-contaminated soil. Additionally, two different types of biochar originated from the same organic material (contaminated and uncontaminated) at different application rates (1% and 2% w/w) were evaluated as a novelty of the experiment. Batch sorption/desorption experiments were established to compare the sorption behavior of metals originating from single-and multi-element solutions. Zinc as one of the main contaminants in the studied soil was easily desorbed in the presence of Cu, Pb and to a lesser extent by Cd. This desorption was reduced after biochar application. The obtained results proved the different sorption behavior of metals in the single-metal solution compared to the multi-metal ones due to competition effect. Moreover, during multi-element sorption, Zn was significantly desorbed. The applied biochar enhanced Cu and Pb sorption and no changes were observed when contaminated and uncontaminated biochar was used. Furthermore, the application rate (1% and 2% w/w) had no effect as well. In summary, it is needed to point out that the applied rates of biochars were insufficient for metal immobilization in such contaminated soils.

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“…This heterogeneity increased as n approached 0 and decreased as n approached 1 (Vidal et al 2009). The parameters of Langmuir equation have the next physical meaning: K L is dependent on the energy of adsorption bounds, and X m is the maximum capacity of the soil the adsorb metalaxyl.…”

Section: Analysis Of the Equilibrium Data From Batch Testsmentioning

confidence: 89%

Metalaxyl mobility in acid soils: evaluation using different methods

Fernández‐Calviño

Bermúdez-Couso

Nóvoa-Muñoz

et al. 2014

Int. J. Environ. Sci. Technol.

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In the present work, different methods were tested to evaluate the adsorption and desorption of metalaxyl in two acid soils with different organic carbon and clay contents. The three methods (batch, stirred flow chamber and column) that were examined produced similar findings when the two soils were compared: (a) the metalaxyl adsorption capacity was higher in the soil with higher organic matter and clay content, and (b) the soil with the lower organic matter and clay contents provided higher adsorption rate constants. In the two soils tested, the metalaxyl adsorbed in the soil was highly reversible. When only one soil was considered, the different methods yielded different results. The metalaxyl adsorption and its rate were higher with the stirred flow chamber than in the column experiments, and in the column experiments, the total metalaxyl adsorption and the rate of adsorption were higher than in the batch experiments. The percentages of metalaxyl desorbed from the soil were similar in the stirred flow chamber and column experiments, but in the batch experiments, the percentages were significantly lower. In the stirred flow chamber experiments, the desorption processes were faster than the adsorption processes, while in the column experiments, the adsorption and desorption processes exhibited similar rates.

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Modeling competitive metal sorption in a mineral soil

Cited by 86 publications

References 27 publications

A model experiment: competitive sorption of Cd, Cu, Pb and Zn by three different soils

A model experiment: competitive sorption of Cd, Cu, Pb and Zn by three different soils

Biochar application to metal-contaminated soil: Evaluating of Cd, Cu, Pb and Zn sorption behavior using single- and multi-element sorption experiment

Metalaxyl mobility in acid soils: evaluation using different methods

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