KMID : 1234420100380030329
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Korean Journal of Microbiololgy and Biotechnology 2010 Volume.38 No. 3 p.329 ~ p.334
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Rhizoremediation of Petroleum and Heavy Metal-Contaminated Soil using Rhizobacteria and Zea mays
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Hong Sun-Hwa
Koo So-Yeon Kim Sung-Hyun Ryu Hee-Wook Lee In-Sook Cho Kyung-Suk
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Abstract
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In this study, the rhizoremediation of petroleum and heavy metal-contaminated soil was characterized employing Zea mays and two plant-growth promoting rhizobacteria, Gordonia sp. S2RP-17 and Serratia sp. SY5 which have petroleum-degrading activity and heavy metal-resistance, respectively. After 51 days, the average dry weights of Zea mays¡¯ root without and with the inoculation of rhizobacteria were 1.9¡¾0.2 and 5.6¡¾0.7 g, respectively. Compared with initial TPH concentration in soil (21,576¡¾3,426 mg-TPH¡¤kg-dry soil-1), the residual TPH concentrations were 220¡¾98 mg-TPH¡¤kg-dry soil-1 in soil planted with Zea mays, and 20¡¾41 mg-TPH¡¤kg-dry soil-1 in soil planted with Zea mays and inoculated with rhizobacteria. These results indicated that the inoculation of S2RP-17 and SY5 could promote TPH removability in soil as well as the growth of Zea mays¡¯ root. There was little positive effect of the rhizobacteria inoculation on the removability of heavy metal such as Cu, Cd and Pb in soil planted with Zea mays.
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KEYWORD
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Rhizoremediation, petroleum, heavy metal, Zea mays, plant-growth promoting rhizobacteria
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