Adsorption of phosphate from the Yellow River water by desert particles:Kinetics and equilibrium studies

被引:0
作者
BeiGang Li XiaoLing BaiQin Ma College of Chemical Environmental ScienceInner Mongolia Normal UniversityHohhotInner Mongolia China [10022 ]
机构
关键词
adsorption; desert particles; phosphate; Yellow River;
D O I
暂无
中图分类号
X52 [水体污染及其防治];
学科分类号
0815 ;
摘要
The equilibrium and kinetic adsorption of phosphate(P) from the Yellow River water onto desert particles taken from the Ulan Buh and Kubuqi deserts were investigated.Effect of the initial concentration of P and particulate matter on the sorption was explored.The kinetic studies show that adsorption rate was faster within the 0-8th hour period,then gradually decreased at 8th-48th hour period and basically tended to a dynamic equilibrium at the 48th hour,but there exists an adsorption difference of P onto different desert particles.The uptake process of P followed the pseudo-second-order rate model and the Morris-Weber diffusion equation which indicates that the adsorption process was mainly controlled by P diffusion inside the particles.The equilibrium investigation obtained an adsorption-desorption equilibrium mass concentration(EPC0) of P from the Yellow River water on desert particles with the range of 0.010-0.042 mg/L,which is higher than present P concentration in the Yellow River.This study indicates that desert particles entering the river might release P to the Yellow River.
引用
收藏
页码:236 / 241
页数:6
相关论文
共 9 条
[1]   生态系统氮磷比化学计量特征研究进展 [J].
邬畏 ;
何兴东 ;
周启星 .
中国沙漠, 2010, 30 (02) :296-302
[2]   基于R/S分析黄河及黄土高原主要河流水资源的变化 [J].
曲广周 ;
覃英宏 ;
刘亮 ;
黄宜军 .
中国沙漠, 2010, 30 (02) :467-470
[3]   黄河口附近海域营养盐特征及富营养化程度评价 [J].
张继民 ;
刘霜 ;
张琦 ;
刘一霆 .
海洋通报, 2008, (05) :65-72
[4]   内蒙古乌兰布和沙漠样中磷形态分析及生物可获磷研究 [J].
李北罡 ;
马钦 ;
郭博书 .
生态与农村环境学报, 2008, (03) :86-88+93
[5]   南四湖及主要入湖河流表层沉积物对磷酸盐的吸附特征 [J].
安文超 ;
李小明 .
环境科学, 2008, (05) :1295-1302
[6]   内蒙古中西部春季沙尘暴年代际振荡及环流特征分析 [J].
马清霞 ;
韩经纬 ;
王星晨 .
中国沙漠, 2008, (02) :357-361
[7]   库布齐沙漠恩格贝沙样中磷的化学赋存形态 [J].
李北罡 ;
郭博书 .
中国沙漠, 2008, (01) :73-76
[8]   长江口泥沙与沉积物对磷酸盐的吸附和解吸研究 [J].
徐明德 ;
韦鹤平 ;
李敏 ;
黄晓琛 .
太原理工大学学报, 2006, (01) :48-50+54
[9]   长江口沉积物对磷酸盐的吸附与释放的研究 [J].
李曰嵩 ;
杨红 .
海洋环境科学, 2004, (03) :39-42