Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2571
Title: Plant uptake and the leaching of metals during the hot EDDS-enhanced phytoextraction process
Authors: Luo, Chunling
Shen, Zhenguo
Li, Xiangdong
Subjects: Phytoextraction
Metals
S,S-ethylenediaminedisuccinic acid (EDDS)
Hot solution
Leaching
Issue Date: 1-May-2007
Publisher: Taylor & Francis
Source: International journal of phytoremediation, 1 May 2007, v. 9, no. 3, p. 181-196.
Abstract: Using pot experiments, the effect of the application of the biodegradable chelating agent S,S-ethylenediaminedisuccinic acid (EDDS) in hot solutions at 90°C on the uptake of Cu, Pb, Zn, and Cd by corn (Zea mays L. cv. Nongda No. 108) and beans (P vulgaris L. white bean), and the potential leaching of metals from soil, were studied. When EDDS was applied as a hot solution at the rate of 1 mmol kg⁻¹, the concentrations and total phytoextraction of metals in plant shoots exceeded or approximated those in the shoots of plants treated with normal EDDS at the rate of 5 mmol kg⁻¹. On the other hand, the leaching of Cu, Pb, Zn, and Cd after the application of the hot EDDS solution at the rate of 1 mmol kg⁻¹ was reduced by 46%, 21%, 57%, and 35% in comparison with that from the application of normal EDDS at 5 mmol kg⁻¹, respectively. For treatment with 1 mmol kg⁻¹ of EDDS, the leached metals decreased to the levels of the control group (that without EDDS amendment) 14 d after the application of EDDS. The soil amendment with biodegradable EDDS in hot solutions may provide a good alternative to chelate-enhanced phytoextraction in enhancing metal uptake by plants and limiting metals from leaching out of the soil.
Rights: © 2007 Taylor & Francis. This is an electronic version of an article published in CL Luo, ZG Shen & XD Li (2007), International Journal of Phytoremediation, 9(3), 181-196. International Journal of Phytoremediation is available online at: http://www.informaworld.com, and the article at: http://www.informaworld.com/smpp/content~db=all~content=a779407782~frm=titlelink.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/2571
DOI: 10.1080/15226510701375986
ISSN: 1522-6514 (print)
1549-7879 (online)
Appears in Collections:CEE Journal/Magazine Articles

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