Although high concentrations of Ni2+ were present in all the parts of the biomass (Table 1), the consortium enzyme exhibited a SY of 71.8%, 70.1%, and 67.8% in the stem, leaf and root parts, respectively (Table 2).
Zn2+, which has the highest concentrations among
all the contaminants in all three parts of the analyzed biomass
(Table 1), yielded the highest SY value, (70.7%) obtained for the
stem region, which was comparable to that obtained for the noncontaminated
stem region (70.7% vs. 74.2%, respectively).