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| Physiological Responses and Phytoremediation Effects of Pennisetum americanum on Zn/BDE-209 Co-contaminated Soils |
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| KeyWord:BDE-209; Zn; co-contamination; phytoremediation; Pennisetum americanum |
| Author Name | Affiliation | | Lu Jun | Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, China | | YIN Hua | Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, College of Environment and Energy, South China University of Technology, Guangzhou 510006, China | | YE Jin-shao | Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, China | | PENG Hui | Department of Chemistry, Jinan University, Guangzhou 510632, China | | LIU Jing | Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institutes, Department of Environmental Engineering, Jinan University, Guangzhou 510632, China |
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| Abstract: |
| Phytoremediation is an environment-friendly and cost-effective technology to reduce contaminants in the environment. A pot experiment was conducted in a greenhouse to investigate the physiological responses and the phytoremediation effects of Pennisetum americanum on Zn and BDE-209 combined pollutants in soils. Biomass of P. americanum escalated with single BDE-209, and also Zn/BDE-209 co-presence at low and moderate concentrations. Under BDE-209 alone and Zn/BDE-209 in combination, increasing their concentrations increased MDA contents, but decreased soluble protein contents and SOD activities. Concentrations of BDE-209 and Zn were significantly higher in roots than in shoots. Accumulation of Zn and BDE-209 by plant was enhanced by increased BDE-209 levels. Low and moderate Zn/BDE-209 co-contamination promoted accumulation and translocation of Zn and BDE-209 in plant, especially for Zn, the bioaccumulation factor of which increased to 7.78 in the underground parts of plant. The maximum removal efficiency of BDE-209 by P. americanum was 60.73% in co-contaminated soils, with higher in the rhizosphere than nonrhizosphere. |
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