PHOSPHORUS ISOTHERMAL ADSORPTION CHARACTERISTICS OF MULCH OF BIORETENTION

被引：8
|
作者：
Mei, Ying [1 ,2 ]
Yang, Xiao-Hua [1 ]
Jiang, Rong [1 ]
Di, Chong-Li [1 ]
Zhang, Xue-Jun [1 ]
机构：
[1] Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China
[2] Inner Mongolia Univ Technol, Dept Environm Sci & Engn, Sch Energy & Power Engn, Hohhot, Peoples R China
来源：
THERMAL SCIENCE | 2012年 / 16卷 / 05期
基金：
中国国家自然科学基金;
关键词：
phosphorus; mulch; bioretention; isothermal adsorption;
D O I：
10.2298/TSCI1205358M
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This study aims to identify mulch of bioretention which has high phosphorus sorption capacity. The phosphorus adsorption characteristics of five types of mulch of bioretention are studied by three isothermal adsorption experiments. Results show that the Langmuir eqution is suitable for describing absorption characteristics of five types of mulch. The positive values of Gibbs free energy for phosphorus indicate that the phosphorus biosorption by five mulches is a non-spontaneous process, and the values of mean sorption free energy of mulch are less than 8 kJ/mol, which proves that the adsorption process can be dominated by physical forces. The vermiculite is the better mulch of bioretention based on high phosphorus removal capacity.
引用
收藏
页码：1358 / 1361
页数：4
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