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http://dx.doi.org/10.5338/KJEA.2002.21.1.031

Phytoremediation of Soils Contaminated with Heavy Metal by Long-Term Cultivation  

Jung, Goo-Bok (National Institute of Agricultural Science and Technology, RDA)
Kim, Won-Il (National Institute of Agricultural Science and Technology, RDA)
Lee, Jong-Sik (National Institute of Agricultural Science and Technology, RDA)
Kim, Kyung-Min (Dept. of Environmental Engineering, Yonsei University)
Publication Information
Korean Journal of Environmental Agriculture / v.21, no.1, 2002 , pp. 31-37 More about this Journal
Abstract
In order to select proper plants for phytoremediation at heavy metal contaminated areas, eight species of non-edible plants were cultivated at the heavy metal contaminated soils near a metal smelter. The content of the absorbed heavy metals (Cd, Cu, Pb and As) at different part of the plants were analyzed. Plants included five tree species (Populus nigra x P. maximowiczii, Euonymus japonica, Acer palmantum, Celtis sinensis, Buxus microphylla), two flower species (Rhododendron lateritium, Calendula officinalis), and lawn (Zoysia japonica). Biomass yield of tree species was higher than those of flower or lawn species. Heavy metals were highly accumulated in roots compared to those In leaves and stems. The concentrations of Cd, Cu, Pb, and As in Buxus microphylla were greater than those in other plant species. Total absorbed Cd and Pb contents, from high to low by each plant in experimental plots were in the order of Populus nigra x P. maximowiczii, Celtis sinensis and Acer palmantum. They were Celtis sinensis, Populus nigra x P. maximowiczii and Buxus microphylla for Cu, and Buxus microphylla, Acer palmantum and Populus nigra x P. maimowiczii for As. It was estimated that among eight plant species used in the experiment Populus nigra x P. maximowiczii, Buxus microphylla, Acer palmantum, and Celtis sinensis were the most effective species for phytoremediation in the heavy metals polluted areas considering biomass yield and heavy metal uptake.
Keywords
heavy metals; phytoremediation; heavy metal-contaminated soil;
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