Capabilities of Seven Species of Aquatic Macrophytes for Phytoremediation of Pentachlorophenol Contaminated Sediment

2016 International Conference on Environmental Engineering and Sustainable Development

生态环境科学;经济学

Zhao, Liangyuan^1 ; Guo, Weijie^1 ; Li, Qingyun^1 ; Li, Huan^1 ; Zhao, Weihua^1 ; Cao, Xiaohuan^1

Basin Water Environmental Research Department, Yangtze River Scientific Research Institute, Wuhan

430010, China^1

关键词: Aquatic environments;    Aquatic macrophytes;    Contaminated sediment;    Lipid content;    Microbial populations;    Phytoremediation;    Rhizosphere microorganisms;    Root tissues;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/51/1/012030/pdf
DOI  :  10.1088/1742-6596/51/1/012030

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Sediments are regarded as the ultimate sink of pentachlorophenol(PCP) in aquatic environment, and capabilities of seven species of aquatic macrophytes for remediating PCP contaminated sediment were investigated. Seven species of aquatic macrophytes could significantly accelerate the degradation of PCP in sediments. Among all, canna indica L., Acorus calamus L. and Iris tectorum Maxim. can be used as efficient alternative plants for remediation of PCP contaminated sediment, which attained 98%, 92% and 88% of PCP removal in sediments, respectively. PCP was detected only in root tissues and the uptake was closely related to the root lipid contents of seven plants. The presence of seven aquatic macrophytes significantly increased microbial populations and the activities of dehydrogenase compared with control sediments, indicating that rhizosphere microorganism played important role in the remediation process. In conclusion, seven species of aquatic macrophytes may act as promising tools for the PCP phytoremediation in aquatic environment, especially Canna indica L., Acorus calamus L. and Iris tectorum Maxim.