Improvement of phytoremediation by using chelating agents
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The purpose of the study is to investigate the remediation ratios of Pb by phytoremediation using the chelating agents on different Pb phases in order to improve the rehabilitation manner. The results indicates that water use only as irrigation solution has low remediation ratios.In simulated soils using EDTA, more than 90% of Pb has been removed except Fe-Pb soil. And most of the Pb removed from simulated soil passed through the adsorption layer and caused the increasing of Pb concentration in plants and cultivation soil.