Morais ultramafic complex: A survey towards nickel phytomining

Ana R.A. Alves, Eduardo F. Silva, Luís A.B. Novo*

*Corresponding author for this work

Research output: Contribution to journalShort cummunication

1 Citation (Scopus)

Abstract

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 serpyllifolium subsp. lusitanicum. Soil samples and A. serpyllifolium specimens were collected in four locations of the Morais massif. After determination of Ni concentrations in the samples, the results show that soil pseudo-total Ni concentrations in sites number 1 and 2 are significantly higher than in the soil samples collected in the other two locations, with 1918 and 2092 mg kg-1, respectively. Nickel accumulation is significantly greater in the aerial parts of plants collected at sites 1, 2, and 4, presenting Ni harvestable amount means of 88.36, 93.80, and 95.56 mg per plant, respectively. These results suggest that the sites with highest potential for phytomining are sites 1, 2, and 4. A nickel agromining system in these locations could represent an additional source of income to local farmers, since ultramafic soils have low productivity for agriculture and crop production.

Original languageEnglish
Article number144
JournalResources
Volume8
Issue number3
DOIs
Publication statusPrint publication - 1 Sep 2019
Externally publishedYes

Keywords

  • Agromining
  • Alyssum serpyllifolium
  • Hyperaccumulators
  • Nickel
  • Phytomining
  • Serpentine soils

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