Sorption and distribution of Zn in a sludge-amended soil: influence of the soil clay mineralogy

Proust, D.

doi:10.1007/s11368-014-1024-z

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…But after entering the soil solution, metal oxide forms transformed into mobile forms which are capable of migration in the soil profile. The depth distribution of metals and their mobility depends on some soil properties: pH, mineral composition and clay content, redox conditions and soil organic carbon (Li et al 2014;Shaheen and Rinklebe 2014;Proust 2015).…”

Section: Introductionmentioning

confidence: 99%

Accumulation and migration of heavy metals in soils of the Rostov region, south of Russia

et al. 2015

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Purpose The main aim of the study performed during 6 years was to determine the specific features of heavy metal contamination of soil cover in the city of Rostov-on-Don and its agglomeration. It was supposed to answer the question: Does soil inherit heavy metals mainly from the parent rocks, or they enter the soil mainly as a result of anthropogenes in the city condition. Materials and methods Seventeen soil profiles were established in different parts of the Rostov agglomeration, within the city and in the urbanized agricultural region. The following objects were studied: (1) calcareous ordinary chernozem under steppe vegetation (fallow) and under trees (parks): soils of natural structure insignificantly affected by urbanization processes; (2) urbostratozems: soils of natural structure overlain by loose anthropogenic deposits; (3) screened urbostratozems (or ecranozems): soils of natural structure overlain by asphalt and/or another impermeable surface. The contents of heavy metals were determined by X-ray fluorescence. The degree of soil contamination with heavy metals was assessed by comparing their content with the MPC values (danger coefficient method) or using the total contamination factor Zc. Results and discussion The comparison of chernozems under different plant covers shows that the woody plants capable of retaining moisture in the soil and more deeply wetting the soil layer decrease the accumulation of vanadium, chromium, cobalt, nickel, and copper in the surface layer. The accumulation coefficients of these metals in urbostratozems are still lower for some reason. At the same time, an increase in the accumulation of zinc and lead is observed in the surface layer of soils under the forest canopy, as well as in the urbostratozems. In the Urbostratozems, screened by dense surfaces, a high variation is observed, which is related to the different times of soil sealing with asphalt.Conclusions The results showed that the concentrations of most elements in the parent rock of Rostov-on-Don exceed the background values, and those of some elements exceed the MPC levels. The main source of accumulation of these elements in the soil profile is the parent rock. Additional input from anthropogenic sources is contributed by the accumulation of such elements as chromium, nickel, zinc, and lead.

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Section: Introductionmentioning

confidence: 99%

Accumulation and migration of heavy metals in soils of the Rostov region, south of Russia

et al. 2015

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“…At competitive situation, Zn exhibits generally a maximum in its sorption curves except in the samples with high clay content showing lower rate of competition with increasing clay content. The clay minerals appear to be important soil components controlling the mobility of Zn in soils (Proust, 2015). For example, results of Nachtegaal & Sparks (2004) showed that the complexation of Zn with the clay surface (kaolinite in this case) is thermodynamically favored over its adsorption onto goethite despite that Zn initially bonded to FeOH groups and the complex formation with kaolinite proceeded with aging only.…”

Section: Discussionmentioning

confidence: 92%

SORPTION PROPERTIES OF Cd, Cu, Pb AND Zn IN SOILS WITH SMECTITIC CLAY MINERALOGY

Sipos¹,

Balázs²,

Németh³

2017

Carpath. J. Earth Environ. Sci.

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Evaluation of the effect of soil properties on metals' sorption in soils is a highly complicated task due to the large heterogeneity of factors affecting this process. To lower this heterogeneity, Cd, Cu, Pb and Zn sorption properties of three acidic and three alkaline smectitic soils were studied in single element and competitive batch sorption experiments, and the sorption capacities of the soils were related to their major properties. Higher sorption of Pb and Cu than Cd and Zn was found also in smectitic soils, and this difference was increased by competition. In acidic soils, organic matter and smectites provides the sorption sites for Pb and Cu primarily, whereas precipitation of Pb as carbonate and sorption of Cu on soil organic matter is characteristic at alkaline conditions. Contrarily, Cd and Zn showed the highest affinity to smectites primarily if they are accumulated together with iron-oxyhydroxides. Processes affecting the shape of the sorption cure may result to misleading sorption capacity values, so an additional parameter describing the sorption of a given metal directly should be involved in the data evaluation. Cadmium and Zn may pose a higher risk to the environment than Pb and Cu in case of their release to the soil. However, accumulation of smectites together with iron may significantly decrease this risk. Elimination of one single variable was not enough to get a much deeper insight into soil-metal interaction, although several advantageous characteristics of smectites could be confirmed regarding metal sorption in soils.

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“…As one knows, montmorillonite is among the most abundant clay minerals. The experimental results show that clay minerals have strong adsorption capacity, which is due to the excellent adsorption performance 3 . Wang studied on the adsorption of clay minerals, using montmorillonite as a raw material to prepare a porous heterostructured mineral adsorbent with surface functionalization, and found that its adsorption capacity for toluene could reach up to 257.2 mg/g 4 , 5 .…”

Section: Introductionmentioning

confidence: 92%

First-principle calculations of sulfur dioxide adsorption on the Ca-montmorillonite

Fang

Song

Liu

et al. 2022

Sci Rep

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According to the serious problem of sulfur dioxide pollution, montmorillonite is one of the effective ways in gas pollution control because of its excellent absorption properties. One of the fundamental questions is to fully understand sulfur dioxide absorption mechanism of montmorillonite. In this study, using the first-principle methods, we studied the adsorption characteristics of Ca-montmorillonite in the presence of $$\hbox {SO}_{{2}}$$ SO 2 . The adsorption energy and elasticity constants as a function of the adsorption capacity were also studied. The calculated results show that bridge site is the most stable adsorption site for $$\hbox {SO}_{{2}}$$ SO 2 with the adsorption energy of − 140 meV. As adsorbent, Ca-montmorillonite is a clay with layer-structure, most of bond lengths(such as Al–O, Mg–O, Si–O, and H–O) does not obviously change. As adsorbed gas, the O–S–O bond angle of adsorbed $$\hbox {SO}_{2}$$ SO 2 change from $$119.50^\circ$$ 119 . 50 ∘ to $$115.32^\circ$$ 115 . 32 ∘ . The volume and adsorption energies of Ca-montmorillonite almost increase linearly with increasing $$\hbox {SO}_{{2}}$$ SO 2 adsorption. By calculating the montmorillonite elasticity constants under different adsorption capacity, we found that the elasticity constant C33 which perpendicular to the crystal face, with the maximum changes from 450 to 326 GPa. In addition, Young’s modulus,bulk modulus and shear modulus significantly decrease with the increasing adsorption. The calculated results will not only help to understand the physical and chemical of montmorillonite but may also provide theoretical guidance for dealing with the problem of gas pollution.

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Sorption and distribution of Zn in a sludge-amended soil: influence of the soil clay mineralogy

Cited by 5 publications

References 41 publications

Accumulation and migration of heavy metals in soils of the Rostov region, south of Russia

Accumulation and migration of heavy metals in soils of the Rostov region, south of Russia

SORPTION PROPERTIES OF Cd, Cu, Pb AND Zn IN SOILS WITH SMECTITIC CLAY MINERALOGY

First-principle calculations of sulfur dioxide adsorption on the Ca-montmorillonite

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