多种水生植物对铀的富集特性对比研究  

Comparative Analysis about Uranium Accumulation Characteristics of Various Aquatic Plants

作　　者：孙静[1] 何家东 李乾[1] SUN Jing;HE Jiadong;LI Qian(Key Discipline Laboratory for National Defense of Biotechnology in Uranium Mining andHydrometallurgy,University of South China,Hengyang,Hunan 421001,China;Department of Pharmacy,Guizhou College of Health Professions,Tongren,Guizhou 554300,China)

机构地区：[1]南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001 [2]贵州健康职业学院药学系,贵州铜仁554300

出　　处：《南华大学学报（自然科学版）》2018年第3期27-31,共5页Journal of University of South China：Science and Technology

基　　金：湖南省教育厅科学研究资助一般项目(15C1179)

摘　　要：本研究采集水生或者喜水植物12种,进行铀富集特性对比研究.对含铀废水的净化结果表明:满江红鱼腥藻对铀的富集能力最强,在修复25 d时,体系中铀的去除率达到97.7%,达到国家允许排放的标准;香蒲草在修复进行20 d以后,铀的去除率也超过92%.对铀富集特性的principal co-ordinates amalysis(PCo A)分析表明,满江红鱼腥藻和香蒲草、碎米沙草和白鹤芋、合果芋和水莎草、大薸和水葫芦对铀的富集特性是相似的.植物对铀毒害的耐受性监测表明,满江红鱼腥藻、合果芋和香蒲草等对铀的耐受性比较强.In this study,twelve kinds of aquatic plants were collected and their uranium-accumulative performance were compared.The results of remediation for uranium waste water showed,the Azoila imbricate from the uranium tailings pond exerted the strongest accumulative capacity and the uranium removal had reached 97. 7%,and the cleaned water had reached below the national permission standard of uranium emission in 25 days. Also,the Typha orientalis showed a good accumulative capacity and tolerance,the uranium removalachieved 92.0% in 25 days. The PCo A analysis of the uranium adsorption characteristics showed that,Cyperus iria and Spathiph yllum kochii,Azoila imbricate and Typha orientalis,Syngonium podophyllum and Cyperus serotinus,Pistia stratiotes and Water hyacinth,showed the similar performance on the uranium enrichment respectively. The plant tolerance results showed,the Azoila imbricate,Syngonium podophyllum and Typha orientalis had a better uranium tolerance.

关 键 词：水生植物 铀 富集特性 对比分析 

分 类 号：X524[环境科学与工程—环境工程]