Phytoextraction of lead from polluted soil by oleander (Nerium oleander)‎

Joint Authors

Husayn, Ramadan Umar
Mezory, Hasan A. M.

Source

مجلة جامعة دهوك

Publisher

University of Duhok

Publication Date

2016-06-30

Country of Publication

Iraq

No. of Pages

9

Main Subjects

Agriculture

English Abstract

Pot experiment was carried out on oleander (Nerium oleander) to investigate its potential to remove lead (Pb) from polluted soil.

Rotted cuttings of oleander were grown in pots contaminated with different levels of Pb (25, 75, 125, 225,425, 825, and 1225 mg.

kg-1 soil) either alone or with (0.5 gm of EDTA.kg-1soil).

Result indicated that the Pb combined with 0.5gm.kg-1 soil EDTA reduced significantly chlorophyll percent compared with plants treated with no EDTA.

Total biomass decreased significantly as Pb concentration in the soil increased and highest dry weight observed in control plant (9.12 g) and the lowest in plants sampled from pots treated with 1225 mg.kg-1of Pb.

There were no significant differences in total dry weight by application of EDTA.

Absorption of Pb by oleander plants increased with the increments in Pb concentration in the soil, also plants treated with EDTA accumulated significantly more Pb than those plants treated with no EDTA, in general concentration of Pb was in order of that roots > stems > leaves.

Translocation and bioaccumulation factor didn’t exceed 1; it means that the oleander plants in under these circumstances can be considered a phytostabilizer plant.

Removal Pb ranged from 0.16 mg.pot-1 in samples grown in pots contained 25 mg.kg-1 of Pb to 0.69 mg.pot-1 in plants treated with 1225 mg.kg-1of Pb and 0.5gm.kg-1EDTA

Data Type

Conference Papers

Record ID

BIM-797935

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