| Article Details : |
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| | | Article Name : | | | The phytomining of nickel from industrial polluted
site of Elbasan, Albania | | Author Name : | | | MARILDA OSMANI1, AIDA BANI, BELINDA HOXHA | | Publisher : | | | Bridge Center | | Article URL : |  | | | Abstract : | | | Large ex industrial areas in Albania could be suitable for
phytomining using nickel hyperaccumulator Alyssum murale Waldst.
& Kit. which grows in Albanian serpentine areas. We undertook a
three-year field experiment in 2013-2016 on ex metallurgical industrial
site in Elbasan. The following aspects were studied on 8 m2 plots
planted with Alyssum murale seeds from serpentine site of Prrenjas: (i)
the effect of chemical fertilizer, tilling soil, irrigation, plant density on
growth parameters (ii) Nickel yield per ha, and (iii) the reduction of Ni
availability in soil after 3 years successive cropping of Alyssum
murale.
The area was cleared in late summer 2013 and then ploughed
and the soils characterized. 8 m2 was planted with A. murale seeds at
a density of 6-16 plants m-2 in September 2013. In three years (at the
end of June), was harvested 6 m2, to study biomass and Ni
phytoextraction. In the plots treated with fertilizers and irrigated
during the warm seasons, the biomass yield progressively improved from 0.6 to 1.1 kg m-2 and phytoextracted Ni increased from 304 to 853
mg Ni m-2. While, in untreated plots the biomass and Ni
phytoextraction varied respectively from 0.3 to 0.5 kg m-2 and from 193
mg Ni m-2 to 313 mg Ni m-2. Nickel availability was 15 % lower after 3-
years of plant harvested in our field experiment with Alyssum murale.
Our study demonstrates that A. murale represents a source for
remediation of metal polluted soil in industrial site. | | Keywords : | | | ex industrial site, phytomining, heavy metal,
phytoextraction, hyperaccumulator plants |
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