Modern approaches to remediation of heavy metal polluted soils: A review

Копцик, Г. Н.

doi:10.1134/s1064229314070072

Cited by 99 publications

(29 citation statements)

References 77 publications

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“…Consequently, the activity of these enzymes can be used to identify plants presenting efficient antioxidant systems to be used in environments contaminated by heavy metals (LI et al, 2012). The use of plants able to uptake and accumulate large amounts of heavy metals (hyperaccumulator plants) in short periods is a very promising alternative to reduce the content of heavy metals and mitigate the damage caused by these elements in contaminated environments, although these plants usually have low biomass production (KOPTSIK, 2014).…”

Section: Soil Sciencementioning

confidence: 99%

“…Thus, it is essential that plants established in environments contaminated by heavy metals have an efficient antioxidant system (GRATÃO et al, 2005;HU et al, 2015). Forage grasses have distinct degrees of tolerance to damages caused by heavy metals, and increased activity of antioxidant enzymes can be considered a desirable evolutionary process for the use of forage grasses in the phytoremediation process (WEIHONG et al, 2009;KOPTSIK, 2014;MIRZAHOSSEINI et al, 2014;HU et al, 2015;LOU et al, 2015).…”

Section: Relationship Between Heavy Metals and Cationic Micronutrientmentioning

confidence: 99%

“…3-The term phytoremediation refers to the use of plants able to extract dangerous substances from the soil or transform them into safe metabolites to the environment (KOPTSIK, 2014). 4-The term tolerant is utilized to refer to the inherent or acquired ability of a plant to withstand alterations caused by toxic elements without significant impairment to its production (KOPTSIK, 2014). 5-For the ion to be absorbed, it must have contact with the roots by one of the following processes: mass flow and root diffusion or interception (as the root grows, the ions of the soil liquid and solid phases are in contact) (MARSCHNER, 2012).…”

Section: Informal Reportmentioning

confidence: 99%

“…In most cases, uptake of metals causes a reduction of biomass production by plants, but in extreme cases in which the content of these metals is too high, the area may become desertified (KOPTSIK, 2014). This situation can also lead to biodiversity decline by the selection of the most resistant plants (ZHANG et al, 2014a).…”

Section: Introductionmentioning

confidence: 99%

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Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview

Rabêlo

Borgo

2016

Cienc. Rural

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An increase in the content of heavy metals in the environment causes many socio-environmental problems, and phytoremediation is a tool to reduce the environmental impact caused by these elements, with prospects for the use of forage grasses. This group of plants features characteristics for the environment-decontamination process, but further studies are necessary about the damages caused by heavy metals on the uptake of cationic micronutrients and on the antioxidant system, which are essential processes for the growth of plants in contaminated sites. Exposure of forage grasses to heavy metals results in a lower content of Mn in the shoots of almost all plants, but the contents of Cu, Fe, and Zn vary according to heavy metal and forage grass. Activities of enzymes superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), and guaiacol peroxidase (GPX) usually increase to reduce the oxidative stress induced by heavy metals, but when the content of any of these metals is high, enzymatic activity is decreased. Scale of toxicity of heavy metals to forage grasses can be described as: Pb ≈ Cr > Cd ≈ As > Zn ≈ Cu ≈ Ni > Mn.

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Section: Soil Sciencementioning

confidence: 99%

Section: Relationship Between Heavy Metals and Cationic Micronutrientmentioning

confidence: 99%

Section: Informal Reportmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview

Rabêlo

Borgo

2016

Cienc. Rural

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“…A significant number of different remediation approaches can be used to resolve the issues of heavy metal soil contamination (e.g. Bech et al, 2014;Koptsik, 2014). Although somewhat beyond the scope of this study, the multi-element nature of the contamination in the Daxing area means that physical and chemical approaches to remediation (i.e.…”

Section: Calculation Processes Of Multifractal Spectrum and Discussionmentioning

confidence: 99%

Comparison of the multifractal characteristics of heavy metals in soils within two areas of contrasting economic activities in China

Li¹,

Li²,

Yuan³

et al. 2016

Nonlin. Processes Geophys.

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Abstract. Industrial and agricultural activities can generate heavy metal pollution that can cause a number of negative environmental and health impacts. This means that evaluating heavy metal pollution and identifying the sources of these pollutants, especially in urban or developed areas, is an important first step in mitigating the effects of these contaminating but necessary economic activities. Here, we present the results of a heavy metal (Cu, Pb, Zn, Cd, As, and Hg) soil geochemical survey in Hefei city. We used a multifractal spectral technique to identify and compare the multifractality of heavy metal concentrations of soils within the industrial Daxing and agricultural Yicheng areas. This paper uses three multifractal parameters ( α, f (α), and τ (1)) to indicate the overall amount of multifractality within the soil geochemical data. The results show all of the elements barring Hg have larger α, f (α), and τ (1) values in the Daxing area compared to the Yicheng area. The degree of multifractality suggests that the differing economic activities in Daxing and Yicheng generate very different heavy metal pollution loads. In addition, the industrial Daxing area contains significant Pb and Cd soil contamination, whereas Hg is the main heavy metal present in soils within the Yicheng area, indicating that differing clean-up procedures and approaches to remediating these polluted areas are needed. The results also indicate that multifractal modelling and the associated generation of multifractal parameters can be a useful approach in the evaluation of heavy metal pollution in soils.

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