EFFECT OF EDTA AND DTPA ON PHYTOREMEDIATION OF PB-ZN CONTAMINATED SOILS BY EUCALYPTUS CAMALDULENSIS DEHNH AND EFFECT ON TREATMENT TIME

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EBRAHIMI M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Desert Year:2014 | Volume:19 | Issue:1 Page(s): 65-73

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Title

EFFECT OF EDTA AND DTPA ON PHYTOREMEDIATION OF PB-ZN CONTAMINATED SOILS BY EUCALYPTUS CAMALDULENSIS DEHNH AND EFFECT ON TREATMENT TIME

Author(s)

EBRAHIMI M. | Issue Writer Certificate

Keywords

PHYTOEXTRACTION

ENVIRONMENTAL POLLUTION

LEAD

ZINC

CHELATING AGENTS

Abstract

In this research a pot experiment was carried out to investigate the remediation ability of E. camaldulensis Dehnh in LEAD ZINC (Pb-Zn) contaminated soil. The study also investigated the effects of ethylenediaminetetraacetic acid (EDTA) and diethylenetrinitrilopentaacetic acid (DTPA) on the phytoremediation efficiency of the plant species, and harvest time as a suitable dose of CHELATING AGENTS was considered. When the plants had grown for 30 days, the seedlings were harvested to determine the concentration of metals in plant tissues and soil. In general, Pb level decreased in the order of: shoot>soil>root, whilst Zn content decreased in the sequence shoot>root>soil. As a second step, contaminated soils were treated with EDTA (1.5, 3, 6, 9 mmolkg-1) and DTPA (1.5, 3, 6, 9 mmolkg-1). The results demonstrated that CHELATING AGENTS enhance metal content in E. camaldulensis. The greatest bioconcentration factor in EDTA treatments (3.94) was observed in 9 EDTA treatment followed by 6 EDTA treatment (3.41). Similarly this was observed for 9 DTPA (2.30) and 6 DTPA (2.23) respectively. With respect to non-significant difference between 9 EDTA and 6 EDTA treatments and between 6 DTPA and 9 DTPA, low doses (6 mmolkg-1) were used in the third step for the highest heavy metal uptake over 30, 60 and 90 days. Results reveal that the concentration of metal soil solution decreases gradually with the passage of time. The results indicate that E. camaldulensis has the potential for the PHYTOEXTRACTION of metal contaminated soils but should not be used unless the biomass containing such accumulated metals is removed for disposal. Significant improvement over current chelate assisted PHYTOEXTRACTION of metals may be possible but should be implemented cautiously because of the environmental risks.

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APA: Copy

EBRAHIMI, M.. (2014). EFFECT OF EDTA AND DTPA ON PHYTOREMEDIATION OF PB-ZN CONTAMINATED SOILS BY EUCALYPTUS CAMALDULENSIS DEHNH AND EFFECT ON TREATMENT TIME. DESERT (BIABAN), 19(1), 65-73. SID. https://sid.ir/paper/637232/en

Vancouver: Copy

EBRAHIMI M.. EFFECT OF EDTA AND DTPA ON PHYTOREMEDIATION OF PB-ZN CONTAMINATED SOILS BY EUCALYPTUS CAMALDULENSIS DEHNH AND EFFECT ON TREATMENT TIME. DESERT (BIABAN)[Internet]. 2014;19(1):65-73. Available from: https://sid.ir/paper/637232/en

IEEE: Copy

M. EBRAHIMI, “EFFECT OF EDTA AND DTPA ON PHYTOREMEDIATION OF PB-ZN CONTAMINATED SOILS BY EUCALYPTUS CAMALDULENSIS DEHNH AND EFFECT ON TREATMENT TIME,” DESERT (BIABAN), vol. 19, no. 1, pp. 65–73, 2014, [Online]. Available: https://sid.ir/paper/637232/en

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