Metal(loid)s behaviour in soils amended with nano zero-valent iron as a function of pH and time

Vítková, Martina; Rákosová, Simona; Michálková, Zuzana

doi:10.1016/j.jenvman.2016.06.003

Cited by 73 publications

(39 citation statements)

References 30 publications

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“…Many studies reported that the soil pH and heavy metal concentrations are vital factors for plant growth 20,21 . Therefore, in this study the six soil samples were analysed in order to assess the major and trace elements content.…”

Section: Resultsmentioning

confidence: 99%

Mineralogical and chemical characterization of the soil from Bârzava river area

Pirşan¹,

Török²,

Tănăselia³

et al. 2017

Studia UBB Chemia

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Mineralogical and chemical characterization of soils is important in for the use of soils as agricultural land. The soil from downstream Bârzava River was characterized and existing geological features of this soil were presented and correlate with the size surfaces. pH measurements of soils samples collected from three different locations and from two different depths were performed. The soil samples were also analysed in order to assess the major and trace elements content. It is known that the pH and heavy metal concentrations are vital factors for plant growth and the obtained results could be use in future for elaboration of some soil bioremediation techniques.

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Section: Resultsmentioning

confidence: 99%

Mineralogical and chemical characterization of the soil from Bârzava river area

Pirşan¹,

Török²,

Tănăselia³

et al. 2017

Studia UBB Chemia

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“…This indicates that iron grit has a rapid effect on the decrease of labile fractions of As in soils and a large proportion of labile fractions of As in soils transformed rapidly into less mobilizable fractions after the addition of iron grit. This is likely to be ascribed to the rapidly increase of iron oxides in soils after the addition of iron grit, because iron oxides have strong adsorbed ability on water soluble As [13,14]. After the incubation, 1 in both of S N and S IN decreased significantly within 120 d and were from 32% and 9% of the total As to 4% and less than 1%, respectively.…”

Section: Influence Of Iron Grit Amendment On As Fractions In Soilsmentioning

confidence: 99%

Impact of Redox Condition on Fractionation and Bioaccessibility of Arsenic in Arsenic-Contaminated Soils Remediated by Iron Amendments: A Long-Term Experiment

et al. 2018

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Iron-bearing amendments, such as iron grit, are proved to be effective amendments for the remediation of arsenic-(As-) contaminated soils. In present study, the effect of redox condition on As fractions in As-contaminated soils remediated by iron grit was investigated, and the bioaccessibility of As in soils under anoxic condition was evaluated. Results showed that the labile fractions of As in soils decreased significantly after the addition of iron grit, while the unlabile fractions of As increased rapidly, and the bioaccessibility of As was negligible after 180 d incubation. More labile fractions of As in iron-amended soils were transformed into less mobilizable or unlabile fractions with the contact time. Correspondingly, the bioaccessibility of As in iron-amended soils under the aerobic condition was lower than that under the anoxic condition after 180 d incubation. The redistribution of loosely adsorbed fraction of As in soils occurred under the anoxic condition, which is likely ascribed to the reduction of As(V) to As(III) and the reductive dissolution of Fe-(hydr)oxides. The stabilization processes of As in iron-amended soils under the anoxic and aerobic conditions were characterized by two stages. The increase of crystallization of Fe oxides, decomposition of organic matter, molecular diffusion, and the occlusion within Fe-(hydr)oxides cocontrolled the transformation of As fractions and the stabilization process of As in iron-amended soils under different redox conditions. In terms of As bioaccessibility, the stabilization process of As in iron-amended soils was shortened under the aerobic condition in comparison with the anoxic condition.

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“…Chemical transformation of NMOs as they interact with plants has been reviewed elsewhere (Lv et al 2019) but no studies specific to Fe-and Mn-NMOs and their transformations in the rhizosphere or inside plants could be found. The transformation of nano zero-valent iron (nZVI) into Fe-NMOs was observed in soil-plant systems, but plant uptake was not investigated as the purpose of the study was to investigate contaminant availability with nZVI application (Vítková et al 2017(Vítková et al , 2018.…”

Section: Uptake and Translocation Of Fe And Mn Nanoparticlesmentioning

confidence: 99%

“…Recently, NMOs, particularly Febased, have been used in the removal of pollutants from natural waters and wastewater, as highlighted in reviews by Hua et al (2012) and Xu et al (2012). Several studies have also demonstrated the scavenging capabilities of Fe-and Mn-NMOs for both metals and, to a lesser extent, organic molecules in soils and sediments (Waychunas et al 2005;Vítková et al 2018;Vítková et al 2017;Jiang et al 2018;Varanasi et al 2007;Gil-Díaz et al 2016;Michálková et al 2014;Babakhani et al 2018). The overall upshot of these studies is that Fe-and Mn-NMOs participate in a wide variety of oxidation-reduction, sorption and aggregation reactions that can limit the mobility of toxic metal(loid)s and organic molecules within soils under a range of environmental conditions.…”

Section: Fortification Potentialmentioning

confidence: 99%

Impact of iron and manganese nano-metal-oxides on contaminant interaction and fortification potential in agricultural systems – a review

et al. 2019

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Environmental contextNanominerals are more reactive than bulk minerals, a property that strongly influences the fate of nutrients and contaminants in soils and plants. This review discusses applications of Fe- and Mn-nano-oxides in agricultural systems and their potential to be used as fertiliser and contaminant adsorbents, while addressing potential phytotoxicity. We discuss areas where significant advances are needed, and provide a framework for future work. AbstractRising population growth and increase global food demand have made meeting the demands of food production and security a major challenge worldwide. Nanotechnology is starting to become a viable remediation strategy of interest in farming. Ultimately, it may be used as a sustainability tool in agricultural systems. In these roles, it could be used to increase the efficiency of techniques such as food monitoring, pathogen control, water treatment and targeted delivery of agrochemicals. In addition to these uses, nanoparticles, particularly nano-metal-oxides (NMOs), have been engineered to act as contaminant scavengers and could be applied to a wide range of systems. Numerous studies have investigated the scavenging ability of NMOs, but few have investigated them in this role in the context of agricultural and food systems. Within these systems, however, research has demonstrated the potential of NMOs to increase crop health and yield but few have studied using NMOs as sources of key micronutrients, such as Fe and Mn. In this review, we address previous research that has used Fe- and Mn-NMOs in agricultural systems, particularly the worldwide crop production of the four major staple foods – rice, wheat, maize and soybeans – highlighting their application as fertilisers and sorbents. Fe- and Mn-NMOs are strong candidates for immobilisation of agricultural contaminants in soils and, because they are naturally ubiquitous, they have the potential to be a cost-effective and sustainable technology compared with other remediation strategies.

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Metal(loid)s behaviour in soils amended with nano zero-valent iron as a function of pH and time

Cited by 73 publications

References 30 publications

Mineralogical and chemical characterization of the soil from Bârzava river area

Mineralogical and chemical characterization of the soil from Bârzava river area

Impact of Redox Condition on Fractionation and Bioaccessibility of Arsenic in Arsenic-Contaminated Soils Remediated by Iron Amendments: A Long-Term Experiment

Impact of iron and manganese nano-metal-oxides on contaminant interaction and fortification potential in agricultural systems – a review

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