生态与农村环境学报2011，Vol.27Issue(2)：48-52,5.
不同品种浮萍磷素吸收动力学特征
Phosphorus Uptake Kinetics of Different Types of Duckweed.
摘要
Abstract
An increasing attention has been paid to the use of duckweed in treating eutrophicated water as a tool of bio-remediation of domestic wastewater.Phosphorus uptake kinetics was studied,of different species of duckweeds, i.e.Lemna aequinoctialis, Spirodela oligorrhiza and Spriodela polyrrhiza, which are common in the Yangtze River Delta area.Results show that the phosphorus uptake kinetics of the duckweeds could be expressed with the Michaelis-Menten equation; and the relation between phosphorus uptake rate (V) of the duckweeds and inorganic phosphorus(Pi) concentration (S), was well fitted with a double-reciprocal curve with at =0.01; the Km value for Pi uptake of Lemna aequinoctialis was lower than that of Spirodela oligorrhiza and Spriodela polyrrhiza, making it a better candidate for treating wastewater low in Pi concentration.The maximum phosphorus uptake rate of Spriodela polyrrhiza was higher than that of the other two species, which allows Spriodela polyrrhiza better performance in purifying wastewater higher in Pi concentration.关键词
浮萍/磷污水/HPO42-/吸收动力学Key words
duckweed/ phosphorus-containing wastewater/ HPO42-/ uptake kinetics分类
资源环境引用本文复制引用
蔡树美,刘文桃,张震,柏彦超,钱晓晴..不同品种浮萍磷素吸收动力学特征[J].生态与农村环境学报,2011,27(2):48-52,5.基金项目
江苏省社会发展计划(BS2007040) （BS2007040）
江苏省科技支撑计划(农业)(BE2009378) （农业）
