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Physicochemical characteristics of the soils from different ultramafic areas located in temperate regions.
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Ultramafic areas are critical for nickel (Ni) phytomining due to the high concentration of this element in their soils and the number of hyperaccumulators they harbor. The aim of the present study was to evaluate the potential of the Morais massif, an ultramafic area in Portugal, for phytomining using the hyperaccumulator species Alyssum serpyllifo...
Contexts in source publication
Context 1
... Ni concentrations, sites 1 and 2, with 1918 and 2092 mg kg −1 , respectively, present significantly higher values in comparison with sites 3 and 4. Site 3 shows significantly lower concentrations of Ni, with a mean of 721 mg kg −1 , in relation to site 4, which presents a Ni concentration of 1145 mg kg −1 . Table 2 shows the results of some physicochemical characteristics of the ultramafic soil in the Morais complex and the values obtained from studies in other ultramafic areas located in temperate regions [1]. The values representing Morais correspond to the ones obtained at site number 2, since it is the location analyzed with the highest Ni pseudo-total concentration in the soil. ...Context 2
... the ranges of these common features can vary at different locations, as the formation of soils depends not only on the nature and the abundance of the weathered parent material (e.g., Cr-bearing minerals are essentially chromite and magnetite, and to a lower extent serpentinite and pyroxene) but also on climate, topography, biota, and time [34]. Interestingly, data from Table 2 show a strong correlation between pH and Ni concentrations in soil (r = 0.975, p < 0.01). Resources 2019, 8 ...Context 3
... letters indicate significant differences between sites at p < 0.05. Table 2 shows the results of some physicochemical characteristics of the ultramafic soil in the Morais complex and the values obtained from studies in other ultramafic areas located in temperate regions [1]. The values representing Morais correspond to the ones obtained at site number 2, since it is the location analyzed with the highest Ni pseudo-total concentration in the soil. ...Context 4
... the ranges of these common features can vary at different locations, as the formation of soils depends not only on the nature and the abundance of the weathered parent material (e.g., Cr-bearing minerals are essentially chromite and magnetite, and to a lower extent serpentinite and pyroxene) but also on climate, topography, biota, and time [34]. Interestingly, data from Table 2 show a strong correlation between pH and Ni concentrations in soil (r = 0.975, p < 0.01). Figure 3 shows the bioavailable Ni concentrations in the soil from each sampling site. ...Citations
... Em 2019, realizou-se um estudo para determinar as concentrações de Ni nos solos e o rendimento da espécie A. pintodasilvae em vários locais ao longo do maciço de Morais (Alves et al., 2019). As concentrações de Ni obtidas nos solos variaram entre os 721 e 2092 mg kg -1 e a concentração máxima de Ni obtida nas folhas da planta foi de 9545 mg kg -1 . ...
The ever-growing demand for metals has been fueling the development of alternative technologies to recover elements of interest from subeconomic deposits. One such example is phytomining, a technique that employs plants with the ability to accumulate astonishing amounts of metals in their tissues. These plants, called hyperaccumulators, can be used to retrieve metals such as Ni or Au from ultramafic soils and mine tailings, respectively. The rhizosphere of hyperaccumulators is often populated by large amounts of microorganisms mainly consisting of bacteria and mycorrhizal fungi. These microorganisms can enhance plant biomass production, reduce metal phytotoxicity, and increase the bioavailability of certain elements of interest. In this chapter, we review the role of bacteria and mycorrhizal fungi in phytomining and outline future perspectives of their application to enhance this green metal–recovery technique.
