USE OF FESTUCA OVINA L. IN CHELATE ASSISTED PHYTOEXTRACTION OF COPPER CONTAMINATED SOILS

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EBRAHIMI MAHDIEH; MADRID DIAZ FERNANDO

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Journal: JOURNAL OF RANGELAND SCIENCE Year:2014 | Volume:4 | Issue:3 Page(s): 171-182

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Information Journal Paper

Title

USE OF FESTUCA OVINA L. IN CHELATE ASSISTED PHYTOEXTRACTION OF COPPER CONTAMINATED SOILS

Author(s)

EBRAHIMI MAHDIEH | MADRID DIAZ FERNANDO | Issue Writer Certificate

Keywords

EDTAQ2

METAL TOLERANCEQ2

PHYTOREMEDIATIONQ2

SOIL POLLUTIONQ1

Abstract

Festuca ovina L. is a hyperaccumulating plant which has aroused considerable interest with respect to its possible use for PHYTOREMEDIATION of contaminated soils. This study has been conducted to evaluate the potentials ofF. ovina L. to serve as a PHYTOREMEDIATION plant in the cleaning up of Cu in the polluted soils and to identify extraction efficiency of Ethylene Diamine Tetraacetic Acid (EDTA) for desorbing copper in relation to chelator dosage. Seeds have been sown in control and Cu contaminated pots (artificially contaminated with 150 mg kg-1 Cu). Results revealed that Cu negatively affected growth and tolerance indices ofF. ovina and the root length was the most sensitive parameter among all measured parameters. The treatments used for assessing EDTA efficiency were 1.5, 3, 6, 15+1.5, 3+3 mmolkg-1, control (C: uncontaminated soil without EDTA) and W (contaminated soil without EDTA). Results showed that the application of 1.5 mmolkg-1 of EDTA did not significantly improve the phytoextraction of Cu and statistically, there was no significant difference in Cu uptake between single and split applications of 1.5 mmolkg-1 of EDTA. A sharp increase in root Cu concentration was observed when 3 mmolkg-1 of EDTA was applied. The highest amount of Cu extracted for the plant tissues was achieved at the doses of 6 mmolkg-1 and 3+3 mmolkg-1 EDTA, respectively. Higher Remediation Factors (RF) were obtained for the plants grown in contaminated soil and the highest RFs (0.08% and 0.07%) were recorded after the addition of 6 and 3+3 mmolkg-1, respectively. Application of EDTA showed a relatively decrease in TI (Tolerance Index) value and the lowest value of TI was recorded in 6 mmolkg-1 EDTA treatment. According to the experiment, EDTA has appeared to be an efficient amendment when Cu phyto-extraction withF.ovina was addressed. But further studies would be needed on investigating the reduction of percolation risk by the amount and process of chelate application.

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References

THE EFFECT OF EDTA ADDITION ON THE PHYTOREMEDIATION EFFICIENCY OF PB AND CR BY ECHINOCHLOA CRUS-GALLI (L.) P. BEAUV. AND ASSOCIATED POTENTIAL LEACHING RISK

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APA: Copy

EBRAHIMI, MAHDIEH, & MADRID DIAZ, FERNANDO. (2014). USE OF FESTUCA OVINA L. IN CHELATE ASSISTED PHYTOEXTRACTION OF COPPER CONTAMINATED SOILS. JOURNAL OF RANGELAND SCIENCE, 4(3), 171-182. SID. https://sid.ir/paper/257551/en

Vancouver: Copy

EBRAHIMI MAHDIEH, MADRID DIAZ FERNANDO. USE OF FESTUCA OVINA L. IN CHELATE ASSISTED PHYTOEXTRACTION OF COPPER CONTAMINATED SOILS. JOURNAL OF RANGELAND SCIENCE[Internet]. 2014;4(3):171-182. Available from: https://sid.ir/paper/257551/en

IEEE: Copy

MAHDIEH EBRAHIMI, and FERNANDO MADRID DIAZ, “USE OF FESTUCA OVINA L. IN CHELATE ASSISTED PHYTOEXTRACTION OF COPPER CONTAMINATED SOILS,” JOURNAL OF RANGELAND SCIENCE, vol. 4, no. 3, pp. 171–182, 2014, [Online]. Available: https://sid.ir/paper/257551/en

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