Assessment of the use of sepiolite amendment to restore heavy metal polluted mine soil

Abad-Valle, Patricia; Álvarez‐Ayuso, E.; Murciego, Ascensión Murciego; Pellitero, E.

doi:10.1016/j.geoderma.2016.06.015

Cited by 78 publications

(22 citation statements)

References 77 publications

(93 reference statements)

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“…In the present study, the greatest increase in soil pH was observed in the treatment containing chalcedonite. A significant increase in soil pH was also reported by Jin et al [33] and Abad-Valle et al [34] who analyzed the effectiveness of mineral-based amendments (nano-hydroxyapatite, sepioloite) in the remediation of PTE-polluted soils, which is consistent with the present findings. Mineral-based amendments can promote assisted phytostabilization by inducing the immobilization of pollutants in soil [29].…”

Section: Discussionsupporting

confidence: 93%

Immobilization of Potentially Toxic Elements (PTE) by Mineral-Based Amendments: Remediation of Contaminated Soils in Post-Industrial Sites

et al. 2020

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In many post-industrial sites, the high contents and high mobility of different potentially toxic elements (PTEs) make the soils unsuitable for effective management and use. Therefore, immobilization of PTE seems to be the best remediation option for such areas. In the present study, soil samples were collected in post-industrial areas in Northeastern Poland. The analyzed soil was characterized by especially high contents of Cd (22 mg·kg−1), Pb (13 540 mg·kg−1), and Zn (8433 mg·kg−1). Yellow lupine (Lupinus luteus L.) and two types of mineral-based amendments were used to determine their combined remediation effect on PTE immobilization. A greenhouse pot experiment was conducted to evaluate the influence of chalcedonite and halloysite on plant growth, chlorophyll a fluorescence, the leaf greenness index (SPAD), PTE uptake, and the physicochemical properties and toxicity of soil. The application of chalcedonite resulted in the greatest increase in soil pH, whereas halloysite contributed to the greatest reduction in the contents of Ni, Pb, Zn, and Cr in soil, compared with the control treatment. The addition of halloysite significantly increased plant biomass. The application of mineral-based amendments increased the ratio of variable fluorescence to maximum chlorophyll fluorescence (Fv/Fm) in yellow lupine leaves. The leaf greenness index was highest in plants growing in soil amended with chalcedonite. The results of this study suggest that mineral-based amendments combined with yellow lupine could potentially be used for aided phytostabilization of multi-PTE contaminated soil in a post-industrial area.

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Section: Discussionsupporting

confidence: 93%

Immobilization of Potentially Toxic Elements (PTE) by Mineral-Based Amendments: Remediation of Contaminated Soils in Post-Industrial Sites

et al. 2020

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“…Urease catalyzes the hydrolysis of urea into carbon dioxide and ammonia (Lloyd and Sheaffe, 1973), which represents microbial activity connected with N cycling. Acid phosphatase catalyzes the hydrolysis of diverse organic monoester compounds to inorganic P (Udovic and Lestan, 2012;Abad-Valle et al, 2016). They reflect the capacity of soil to perform specific reactions related to soil carbon (C), nitrogen (N), and phosphorus (P) cycling (Yoo et al, 2016;Chae et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties

Wang

Zhang

Zhong

et al. 2018

Science of The Total Environment

108

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Soil washing with chelators is a promising and efficient method of remediating metals-contaminated soils. However, the toxicity of residual metals and the effects on soil microbial properties have remained largely unknown after washing. In this study, we employed four biodegradable chelators for removal of metals from contaminated soils: iminodisuccinic acid (ISA), glutamate-N,N-diacetic acid (GLDA), glucomonocarbonic acid (GCA), and polyaspartic acid (PASP). The maximum removal efficiencies for Cd, Pb, and Zn of 85, 55, and 64% and 45, 53, and 32% were achieved from farmland soil and mine soil using biodegradable chelators, respectively. It was found that the capacity of ISA and GLDA to reduce the labile fraction of Cd, Pb, and Zn was similar to that of the conventional non-biodegradable chelator ethylenediaminetetraacetic acid (EDTA). The leachability, mobility, and bioaccessibility of residual metals after washing decreased notably in comparison to the original soils, thus mitigating the estimated environmental and human health risks. Soil β-glucosidase activity, urease activity, acid phosphatase activity, microbial biomass nitrogen, and microbial biomass phosphorus decreased in the treated soils. However, compared with EDTA treatment, soil enzyme activities distinctly increased by 5-94% and overall microbial biomass slightly improved in the remediated soils, which would facilitate reuse of the washed soils. Based on soil toxicity tests that employed wheat seed germination as the endpoint of assessment, the washed soils exhibited only slight effects especially after ISA and GLDA treatments, following high-efficiency metal removal. Hence, ISA and GLDA appear to possess the greatest potential to rehabilitate polluted soils with limited toxicity remaining.

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“…TF, on the other hand, was <1 for all series of the experiment, assuming the lowest value also in the case of treatment with dolomite. In an experiment by Abad-Valleet et al [30] where sepiolite was added to soil contaminated with heavy metals, TF values for F. rubra varied from 0.058 to 0.065.…”

Section: Zn Accumulation and Translocation Of F Rubramentioning

confidence: 99%

Enhanced Phytostabilization of Metal-Contaminated Soil after Adding Natural Mineral Adsorbents

Radziemska¹

2018

Pol. J. Environ. Stud.

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Assessment of the use of sepiolite amendment to restore heavy metal polluted mine soil

Cited by 78 publications

References 77 publications

Immobilization of Potentially Toxic Elements (PTE) by Mineral-Based Amendments: Remediation of Contaminated Soils in Post-Industrial Sites

Immobilization of Potentially Toxic Elements (PTE) by Mineral-Based Amendments: Remediation of Contaminated Soils in Post-Industrial Sites

Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties

Enhanced Phytostabilization of Metal-Contaminated Soil after Adding Natural Mineral Adsorbents

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