Abandoned Mine Lands Reclamation by Plant Remediation Technologies

Peco, Jesús D.; Higueras, Pablo; Campos, Juan A.; Esbrí, José María; Moreno, M.M.; Battaglia-Brunet, Fabienne; Sandalio, Luisa M.

doi:10.3390/su13126555

Cited by 41 publications

(17 citation statements)

References 224 publications

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“…EDTA and DTPA are the most used procedures for mobile toxic metal extraction from soil, especially in soil phytoremediation studies [ 66 , 67 , 68 ].…”

Section: Discussionmentioning

confidence: 99%

Bioavailability, Accumulation and Distribution of Toxic Metals (As, Cd, Ni and Pb) and Their Impact on Sinapis alba Plant Nutrient Metabolism

Vasile

Tenea

Dinu

et al. 2021

IJERPH

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This study presents the behavior of white mustard seedlings Sinapis alba grown for three months in laboratory polluted soil containing As, Cd, Ni and Pb. Four different experiments were performed in which As was combined with the other three toxic metals in different combinations (As, AsCd, AsCdNi, AsCdNiPb), keeping the same concentrations of As and Cd in all tests and following the national soil quality regulations. The effects of these metals were monitored by the analytical control of metal concentrations in soil and plants, bioavailability tests of mobile metal fractions using three different extracting solutions (DTPA + TEA + CaCl2-DTPA, DTPA + CaCl2-CAT, and CH3COONH4 + EDTA-EDTA) and calculation of bioaccumulation and translocation factors. Additionally, micro, and macro-nutrients both in soil and plant (root, stem, leaves, flowers and seeds) were analyzed in order to evaluate the impact of toxic metals on plant nutrient metabolism. Metals were significantly and differently accumulated in the plant tissues, especially under AsCdNi and AsCdNiPb treatments. Significant differences (p < 0.05) in the concentration of both As and Cd were highlighted. Translocation could be influenced by the presence of other toxic metals, such as Cd, but also of essential metals, through the competition and antagonism processes existing in plant tissues. Significantly, more Cd and Ni levels were detected in leaves and flowers. Cd was also detected in seeds above the WHO limit, but the results are not statistically significant (p > 0.05). The extraction of metallic nutrients (Zn, Cu, Mn, Ni, Mg, K, Fe, Ca, Cr) in the plant was not influenced by the presence of toxic metal combinations, on the contrary, their translocation was more efficient in the aerial parts of the plants. No phytotoxic effects were recorded during the exposure period. The most efficient methods of metal extraction from soil were for As-CAT; Cd-all methods; Pb and Ni-DTPA. The Pearson correlations (r) between applied extraction methods and metal detection in plants showed positive correlations for all toxic metals as follows: As-CAT > DTPA > EDTA, Cd-DTPA > CAT > EDTA, Ni-EDTA = DTPA > CAT, Pb-EDTA = DTPA = CAT). The results revealed that Sinapis alba has a good ability to accumulate the most bioavailable metals Cd and Ni, to stabilize As at the root level and to block Pb in soil.

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“…EDTA and DTPA are the most used procedures for mobile toxic metal extraction from soil, especially in soil phytoremediation studies [ 66 , 67 , 68 ].…”

Section: Discussionmentioning

confidence: 99%

Bioavailability, Accumulation and Distribution of Toxic Metals (As, Cd, Ni and Pb) and Their Impact on Sinapis alba Plant Nutrient Metabolism

Vasile

Tenea

Dinu

et al. 2021

IJERPH

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“…By 2030, SDG target 15.3 aims to restore degraded lands and soils, including abandoned mine sites. In this context, remediation strategies have been developed to prevent the dispersion of pollutants, stabilize surfaces, prevent erosion, and recover abandoned mine sites [2,3].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Transfer of Trace Metals to Spontaneous Plants on Abandoned Pyrrhotite Mine: Potential Application for Phytostabilization of Phosphate Wastes

Berkaoui

Adnani

Hakkou

et al. 2022

Plants

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The abandoned Kettara pyrrhotite mine (Marrakech region, Morocco) is a real source of acid mine drainage (AMD) and heavy metal pollution from previous mining operations—which has spread, particularly because of wind erosion. A store-and-release cover system made of phosphate wastes was built on the site for preventing AMD. To ensure the integrity of this cover and its durability, it is desirable to revegetate it (phytostabilization) with plants adapted to the edaphoclimatic conditions of the region. In this paper, a study was carried out on the spontaneous vegetation around the phosphate cover in order to consider the selection of plants to promote the stabilization of the Kettara mine tailings pond. Nine species of native plants with their rhizospheric soils growing in agricultural soils and tailings from the Kettara mine were collected, and metals (As, Cd, Co, Cu, Pb, Zn, Ni, Cr) were analyzed. The soil analysis showed that the tailings contained high concentrations of Cu (177.64 mg/kg) and Pb (116.80 mg/kg) and that the agricultural soil contained high concentrations of As (25.07 mg/kg) and Cu (251.96 mg/kg) exceeding the toxicity level (Cu > 100 mg/kg, Pb > 100 mg/kg, As > 20 mg/kg). The plant analysis showed low trace metal accumulation in Scolymus hispanicus, Festuca ovina, Cleome brachycarpa, Carlina involucrata and Peganum harmala. These species had a bioconcentration factor (BCF) greater than 1 and a translocation factor (TF) less than 1, demonstrating a high tolerance to trace metals. Therefore, they are good candidates for use in the phytoremediation of the Kettara mine tailings. These species could also potentially be used for the phytostabilization of the phosphate waste cover of the Kettara mine, thus completing the rehabilitation process of this area.

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“…Numerous countries have recognized in recent decades that abandoned metal mining activities have a substantial negative impact on the environment (Elmayel et al, 2020;Peco et al, 2021). Deposit operators in the mining industry were not compelled to complete environmental impact assessments or to restore the site upon closure.…”

Section: Introductionmentioning

confidence: 99%

Influence of Compost and Chemical Fertilizer on Multi-Metal Contaminated Mine Tailings Phytostabilization by <i>Atriplex nummularia</i>

Laghlimi¹,

Elouadihi²,

Baghdad³

et al. 2022

Ecol. Eng. Environ. Technol.

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Heavy metals in mine tailings induce severe environmental contamination of terrestrial ecosystems. They are hazardous to human health and must be cleaned up. However, ex-situ procedures are costly and soil-destroying. Phytoremediation approaches might be a cost-effective and environmentally friendly option. Phytostabilization of mine tailings, which employs plants, is a commonly used technique for preventing the spread of contaminants and particles from the site. Nutrient-deficient mine tailings must be amended to increase plant growth and phytoremediation performance. This study aims to investigate the tolerance of Atriplex nummularia to high heavy metal levels (Pb, Zn, and Cu) and the effects of compost and chemical fertilizer on biomass generation and heavy metal uptake. Halophyte species have been commonly employed for the phytoremediation of soil polluted with heavy metals. A pot experiment was undertaken with four treatments: T1 (agricultural soil), T2 (mine tailings), T3 (mine tailings mixed with compost), and T4 (mine tailings with chemical fertilizer). Results showed that both amendments demonstrated a significant beneficial effect on growth and biomass production. For all treatments, metals mostly accumulated in the roots, with only a small amount transferred to the shoots. Compost application resulted in a higher Pb concentration in roots than chemical fertilizer. The results of this study suggest that Atriplex nummularia can be used in phytostabilization for these types of mine tailings. However, long-term field data is needed to improve understanding of the Atriplex nummularia tolerance to high concentrations of heavy metals, as well as their uptake and translocation to aerial components.

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Abandoned Mine Lands Reclamation by Plant Remediation Technologies

Cited by 41 publications

References 224 publications

Bioavailability, Accumulation and Distribution of Toxic Metals (As, Cd, Ni and Pb) and Their Impact on Sinapis alba Plant Nutrient Metabolism

Bioavailability, Accumulation and Distribution of Toxic Metals (As, Cd, Ni and Pb) and Their Impact on Sinapis alba Plant Nutrient Metabolism

Assessment of the Transfer of Trace Metals to Spontaneous Plants on Abandoned Pyrrhotite Mine: Potential Application for Phytostabilization of Phosphate Wastes

Influence of Compost and Chemical Fertilizer on Multi-Metal Contaminated Mine Tailings Phytostabilization by <i>Atriplex nummularia</i>

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