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不同体系中黄河沉积物对La³⁺的吸附特性

Study on Adsorption of the Yellow River Sediment on La³⁺ in Different System

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【作者】米娜；何江；匡运臣；樊庆云；张翼明；王霞；关伟；李桂海；李朝生；王新伟；

【Author】 MI Na~1, HE Jiang~1, KUANG Yun-chen~2,FAN Qing-yun~2,ZHANG Yi-ming~3,WANG Xia~2,GUAN Wei~1,LI Gui-hai~1,LI Chao-sheng~1,WANG Xin-wei~1(1.Department of Ecology and Environment Science, Inner Mongolia University, Huhhot 010021, China;2.Baotou Environmental Monitoring Center, Baotou 014030, China;3.Baotou Research Institute of Rare Earths,Baotou 014010 China)

【机构】内蒙古大学生态与环境科学系；包头市环境监测站；包头稀土研究院；内蒙古大学生态与环境科学系内蒙古　呼和浩特　010021；内蒙古　呼和浩特　010021；内蒙古　包头　014030；内蒙古　包头　014010；内蒙古　呼和浩特　010021；

【摘要】对比实验研究揭示,不同体系中La3+的吸附等温线类型差别较大,单离子体系中La3+的吸附属于典型的一级吸附模式,多离子体系中,La3+的吸附等温线呈不规则变化,用现有的等温吸附方程均不能较好拟合其等温吸附过程;不同体系中La3+的pH突跃区域无显著性差异;随温度的升高,单离子体系中,表层沉积物对La3+的吸附量增加,多离子体系中则降低;随着泥沙浓度、离子强度的增加和有机质的去除,表层沉积物对La3+的吸附量均降低,而且悬浮物对La3+的吸附量大于表层沉积物。更多还原

【Abstract】 The study showed that the difference of La³⁺ adsorption isotherm were obvious in different systems, La³⁺ adsorption isotherm was a typical adsorption pattern in single-ion system, and that was anomalistic adsorption pattern in multi-ion system. The pH dependent curves were no significantly different in different systems. The adsorption capacity of La³⁺ was increasing in single-ion system. but that was decreasing in multi-ion system with increasing temperature. The adsorption capacity of La³⁺ were all decreasing with increasing silt concentration and ion intensity and wiping organic matter.The adsorption capacity of La³⁺ in suspended matter was more than that in surface sediment.更多还原