[1]邹卫华,刘晨湘,江利,等.二氧化锰对铜、铅离子的吸附研究[J].郑州大学学报(工学版),2005,26(03):15-19.[doi:10.3969/j.issn.1671-6833.2005.03.005]
　Zou Weihua,LIU Chenxiang,Jiang Li,et al.Study on adsorption of copper and lead ions by manganese dioxide[J].Journal of Zhengzhou University (Engineering Science),2005,26(03):15-19.[doi:10.3969/j.issn.1671-6833.2005.03.005]

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二氧化锰对铜、铅离子的吸附研究()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

26

期数:

2005年03期

页码:

15-19

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Study on adsorption of copper and lead ions by manganese dioxide

作者:

邹卫华; 刘晨湘; 江利; 等.

郑州大学化工学院,河南,郑州,450002, 郑州大学化学系,河南,郑州,450052

Author(s):

Zou Weihua; LIU Chenxiang; Jiang Li; etc

关键词:

二氧化锰;  铜离子;  铅离子;  吸附

Keywords:

manganese dioxide;  copper ions;  lead ions;  Adsorption

DOI:

10.3969/j.issn.1671-6833.2005.03.005

文献标志码:

A

摘要:

研究了δ型二氧化锰对Cu2+和Pb+的吸附及竞争吸附性能,考察了溶液的pH值、温度、盐浓度、吸附时间等因素对吸附的影响.结果表明,吸附量随着溶液pH值的增大、温度的升高以及盐浓度的降低而增加.二氧化锰对单一体系中Cu2+和Pb2+的吸附符合Langmiur吸附等温式,吸附过程的△G°均为负值,△H°大于零,表明该过程是自发的吸热过程.二氧化锰对Cu2+和Pb2+的吸附过程可用准二级反应动力学模型较好地描述.共存离子的存在影响金属离子的吸附效率,Pb2+对Cu2+的吸附影响很大.二氧化锰对Cu2+和Pb2+的吸附强弱顺序为Pb2+＞Cu2+.

Abstract:

The adsorption and competitive adsorption properties of δ-type manganese dioxide on Cu2+ and Pb+ were studied, and the effects of pH, temperature, salt concentration, adsorption time and other factors on adsorption were investigated. The results showed that the adsorption capacity increased with the increase of pH value, temperature and salt concentration. The adsorption of Cu2+ and Pb2+ by manganese dioxide in a single system conforms to the Langmiur adsorption isotherm, and the △G° of the adsorption process is negative, and the △H° is greater than zero, indicating that the process is a spontaneous endothermic process. The adsorption process of manganese dioxide to Cu2+ and Pb2+ can be well described by the quasi-secondary reaction kinetic model. The presence of coexisting ions affects the adsorption efficiency of metal ions, and Pb2+ has a great influence on the adsorption of Cu2+. The adsorption order of manganese dioxide on Cu2+ and Pb2+ was Pb2+>Cu2+.

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