ENHANCING THE EXTRACTION OF ZN FROM A POLLUTED SOIL BY RADISH USING EDTA AND H2SO4

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MANSOURI T.; GOLCHIN A.; FEREIDOONI J.; VAFAE M.

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Journal: Journal of Water and Soil Conservation Year:2016 | Volume:23 | Issue:1 Page(s): 1-22

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Title

ENHANCING THE EXTRACTION OF ZN FROM A POLLUTED SOIL BY RADISH USING EDTA AND H2SO4

Author(s)

MANSOURI T. | GOLCHIN A. | FEREIDOONI J. | VAFAE M. | Issue Writer Certificate

Keywords

EDTAQ2

RADISHQ2

PHYTOREMEDIATIONQ2

PHYTOEXTRACTIONQ3

ZNQ2

H2SO4Q2

Abstract

Background and Objectives: Soil pollution by heavy metals is a major environmental problem which has negative effects on human, animal, ecosystem and agricultural productions health. PHYTOREMEDIATION, a technology that involves plants, is an effective, cheap and environmental friendly method for cleaning polluted soils. Chemical PHYTOEXTRACTION is a method that makes use of chelating agents and mineral acids to enhance uptake of heavy metals by plants. The aims of this study were: (a) determining the potential of the RADISH plant for ZN extraction from polluted soils, (b) assessing the effects of different additives (EDTA and H2SO4) on enhancing ZN uptake by RADISH plant and (c) assessing the effects of different levels of soil ZN on RADISH growth and ZN concentrations in above and below ground parts of this plant.Materials and Methods: A Factorial experiment was conducted in soil science lab, using a completely randomized design and three replications. The experimental factors were types and rates of additives (10 and 20 mg EDTA /kg and 0, 750 and 1500 mg H2SO4/kg) and levels of soil ZN (0, 200, 400, 600, 800, 1000 and 1200 mg/kg).Results: The results showed that the application of additives increased the concentrations and uptake of ZN in above and below ground parts of RADISH and decreased their dry weights. Application of 20 mg EDTA/kg soil caused the highest concentrations of ZN in the above and below ground parts of RADISH and increased 304 and 182 mg/kg respectively compared to the control. Application of 20 mg EDTA/kg soil increased ZN uptake by plant by 28.7 percent.20 mg EDTA /kg soil, 10 mg EDTA /kg soil, 1500 mg H2SO4 /kg soil and 750 mg H2SO4 /kg soil were better treatments respectively. Zinc concentrations in aerial parts were higher than those of below ground parts and the highest concentration of ZN in these parts were 810 and 425 mg/kg respectively. The dry weights of above and below ground parts of RADISH decreased but ZN concentration of these parts increased as the ZN levels of soils increased. An antagonistic effect between p, K, Fe and ZN uptake was also observed.Conclusion: In general the results showed that the RADISH was a ZN hyper accumulator plant having translocation factor of greater than 1 and can be used for PHYTOREMEDIATION of ZN polluted soils. The application rate of amendments had significant effects on their performance and inappropriate application rate, had negative effects on PHYTOREMEDIATION. Based on the results obtained in this experiment, the application of 20 mg EDTA/kg soil is recommend for ZN PHYTOREMEDIATION.

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APA: Copy

MANSOURI, T., GOLCHIN, A., FEREIDOONI, J., & VAFAE, M.. (2016). ENHANCING THE EXTRACTION OF ZN FROM A POLLUTED SOIL BY RADISH USING EDTA AND H₂SO₄. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 23(1), 1-22. SID. https://sid.ir/paper/156583/en

Vancouver: Copy

MANSOURI T., GOLCHIN A., FEREIDOONI J., VAFAE M.. ENHANCING THE EXTRACTION OF ZN FROM A POLLUTED SOIL BY RADISH USING EDTA AND H₂SO₄. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2016;23(1):1-22. Available from: https://sid.ir/paper/156583/en

IEEE: Copy

T. MANSOURI, A. GOLCHIN, J. FEREIDOONI, and M. VAFAE, “ENHANCING THE EXTRACTION OF ZN FROM A POLLUTED SOIL BY RADISH USING EDTA AND H₂SO₄,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 23, no. 1, pp. 1–22, 2016, [Online]. Available: https://sid.ir/paper/156583/en

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