期刊
BIORESOURCE TECHNOLOGY
卷 99, 期 15, 页码 7091-7097出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2008.01.002
关键词
heavy metals; aquatic macrophytes; phytoremediation; hyperaccumulation; toxicity
Under the present investigation effectiveness of three aquatic macrophytes Pistia stratioies L. (water lettuce), Spirodela polyrrhiza W. Koch (duckweed) and Eichhornia crassipes were tested for the removal of five heavy metals (Fe, Zn, Cu, Cr and Cd). These plants were grown at three different concentrations (1.0, 2.0 and 5.0 mg l(-1)) of metals in laboratory experiment. Result revealed high removal (> 90%) of different metals during 15 days experiment. Highest removal was observed on 12th day of experiment, thereafter it decreased. Results revealed E. crassipes as the most efficient for the removal of selected heavy metals followed by P. stratiotes and S. polyrrhiza. Results from analysis confirmed the accumulation of different metals within the plant and a corresponding decrease of metals in the water. Significant correlations between metal concentration in final water and macrophytes were obtained. Plants have accumulated heavy metals in its body without the production of any toxicity or reduction in growth. Selected plants shown a wide range of tolerance to all of the selected metals and therefore can be used for large scale removal of heavy metals from waste water. (c) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据