高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (7): 1240.

• 研究论文 • 上一篇    下一篇

湖水中的颗粒物对水体生物膜吸附铅、镉的影响

董德明1, 杨帆1, 李鱼1,2, 刘亮1, 郑娜1, 梁楠3   

  1. 1. 吉林大学环境与资源学院,
    2. 化学学院, 长春 130023,
    3. 吉林省地质科学研究所, 长春 130012
  • 收稿日期:2003-03-24 出版日期:2004-07-24 发布日期:2004-07-24
  • 通讯作者: 董德明(1957年出生),男,博士,教授,博士生导师,主要从事环境中痕量金属形态及其迁移转化规律的研究.E-mail:dmdong@mail.jlu.edu.cn E-mail:dmdong@mail.jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20077011);教育部博士学科点专项基金(批准号:20020183056);教育部高等学校骨干教师资助计划资助

Effects of Suspended Particulates in Nanhu Lake on Pb and Cd Adsorption to Surface Coatings Developed in the Natural Water

DONG De-Ming1, YANG Fan1, LI Yu1,2, LIU Liang1, ZHENG Na1, LIANG Nan3   

  1. 1. College of Environment and Resources;
    2. College of Chemistry, Jilin University, Changchun 130023, China;
    3. Jilin Province Institute of Geological Science, Changchun 130012, China
  • Received:2003-03-24 Online:2004-07-24 Published:2004-07-24

PDF (PC)

被引次数

12

摘要： 采用逐级过滤的方式对湖水进行过滤,并用含有不同粒径颗粒物的湖水进行生物膜的培养,以研究水中颗粒物对生物膜吸附痕量重金属的影响.研究结果表明,生物膜上铁、锰氧化物含量与水中总铁、总锰含量呈明显的线性关系,锰氧化物的含量受水中颗粒物粒径分布的影响很大.生物膜吸附铅、镉的热力学过程符合Langmuir方程,且膜上铁、锰氧化物吸附铅、镉的能力随着湖水中颗粒物粒径的减小呈增强的趋势.

关键词: 生物膜, 颗粒物, 铅, 镉, 吸附

Abstract: Surface coatings developed in different water obtained by means of stepwise filtration were used to assay the effect of suspended particulates on trace metal adsorption to them. There was a statistically significant correlation relationship between the contents of iron and manganese oxides on surface coatings and those in water, in which surface coatings were developed, even though manganese oxides was influenced obviously by particulates suspended in waters. The classical Langmuir adsorption isotherm was suitable to describe Pb and Cd adsorption to the surface coatings. It was observed that all of the iron oxides on the surface coatings contributed to Pb adsorption while manganese oxides on surface coatings developed in waters containing suspended particulates with a greater diameter contributed most to Cd adsorption. However, the adsorption capacities of Pb and Cd to the surface coatings increased with the decrease of diameter of suspended particulates in water.

Key words: Surface coatings, Suspended particulate, Cd, Pb, Adsorption

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