上海海洋大学学报2012，Vol.21Issue(5)：784-793,10.
3种沉水植物对水体重金属镉去除效果的实验研究
Reaserch on phytoremediation of cadmium contaminated water by three submerged macrophytes
摘要
Abstract
The study is about the growth and cadmium′s restoration effect of three submerged macrophytes(Ceratophyllum demersum L.,Elodea nuttallii and Vallisneria natans)in different pH and cadmium.The result shows that,three submerged macrophytes can all tolerate the pollution of cadmium in a certain concentration range,and eliminate cadmium of the water to different degree.Ceratophyllum demersum L.and Elodea nuttallii have strongest elimination ability of cadmium under pH 8.5 or 15 μg/L cadmium.Vallisneria natans has strongest elimination ability of cadmium under pH 7.5 or 10 μg/L cadmium.Among these living submerged macrophytes,Elodea nuttallii has the strongest tolerate and elimination ability of cadmium(up to 92%),then Ceratophyllum demersum L.(up to 90%),and Vallisneria natans(up to 66%).The elimination ability of the 3 submerged macrophytes’ powder is more obvious than its living form,Elodea Canadensis’s powder has the strongest elimination ability of cadmium(up to 95%),then Ceratophyllum demersum L.’s powder(up to 93%),and Vallisneria natans’s powder(up to 88%).But the elimination ability of cadmium by Vallisneria natans’s powder is less vulnerable to the pH and the cadmium concentration(range between 81% and 88%).The three submerged macrophytes adaptation scope very broad,efficient and pollution-free,they could be successfully used for heavy metal removal from waste-water containing cadmium.关键词
沉水植物/镉/吸附/金鱼藻/伊乐藻/苦草Key words
submerged macrophytes/cadmium(Cd)/adsorption/Ceratophyllum demersum L./Elodea nuttallii/Vallisneria natans分类
资源环境引用本文复制引用
张饮江,易冕,王聪,董悦,刘晓培,文晓峰,李岩..3种沉水植物对水体重金属镉去除效果的实验研究[J].上海海洋大学学报,2012,21(5):784-793,10.基金项目
国家水专项 （）
国家科学技术委员会 （）
上海市科学技术委员会重大项目 （）
上海市世博专项 （）
上海市重点学科建设项目 （）
