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| Phytoremediation of Cadmium and Pyrene Co-polluted Soil by Sudan Grass（Sorghum vulgare L.） |
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| KeyWord:Sudan grass; cadmium; pyrene; co-contamination; phytoremediation |
| Author Name | Affiliation | | JIA Chan | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | HU Shi-bin | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | ZHANG Chun-hui | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | HAN Yu-jie | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | WANG Xiao-guo | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | CHENG Zhi-wen | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China |
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| Abstract: |
| Sudan grass（Sorghum vulgare L.） has been used to phytoremediate soils polluted by heavy metals. A pot experiment was carried out to examine remediation efficiency of cadmium（Cd） and pyrene（PYR） co-polluted soil by Sudan grass under greenhouse conditions. Sudan grass grew normal at initial concentrations of pyrene ranging from 0 to 305.47 mg·kg-1 and Cd from 0 to 18.11 mg·kg-1. Cadmium removal rates by Sudan grass decreased with increasing concentrations of pyrene. Planting Sudan grass significantly promoted the dissipation of pyrene in the soil. The removal rates of pyrene by Sudan grass were 59.18%～88.46%, higher than those without Sudan grass, which were 12.92%～40.73%; Likewise, removal rates of pyrene in soils decreased when Cd levels increased in the soils. |
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