Assessing the agromining potential of Mediterranean nickel-hyperaccumulating plant species at field-scale in ultramafic soils under humid-temperate climate

The Science of the Total Environment
Tania PardoP S Kidd

Abstract

Nickel (Ni) agromining of ultramafic soils has been proposed as an eco-friendly option for metal recovery, which can also improve the fertility and quality of these low productive soils. The selection of adequate plant species and the analysis of their performance under the different climatic conditions are of interest for optimising the process and evaluating its full viability. A one-year field experiment was carried out to evaluate the viability of the two Ni-hyperaccumulating Mediterranean species, Alyssum murale and Leptoplax emarginata, for agromining purposes in ultramafic soils under a humid-temperate climate. Field plots of 50 m2 were established and the soil was fertilised with gypsum and inorganic NPK fertilisers prior to cropping. Alyssum murale produced a slightly higher Ni yield than L. emarginata, but Ni bioaccumulation was dependent on the plant phenological stage for both species, being maximal at mid-flowering (4.2 and 3.0 kg Ni ha-1, respectively). In both species, Ni was mainly stored in the leaves, especially in leaves of vegetative stems, but also in flowers and fruits in the case of L. emarginata. The main contributors to Ni yield of A. murale were flowering stems and their leaves, while for L. emarginata...Continue Reading

References

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Jan 25, 2016·The Science of the Total Environment·V Álvarez-LópezP S Kidd
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Citations

Dec 1, 2019·International Journal of Environmental Research and Public Health·Chen LiXuegang Luo
Sep 26, 2020·International Journal of Phytoremediation·Christina HipfingerMarkus Puschenreiter
Feb 5, 2021·Environmental Research·Aqib Hassan Ali KhanSohail Yousaf
Sep 25, 2018·Chemosphere·Cássio Francisco Moreira de CarvalhoPaulo Roberto da Rocha Júnior
Jan 14, 2022·PloS One·Muhammad HaseebManzer H Siddiqui

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