Effect of Temperature, Salinity, and pH on the Adsorption of Lead by Sediment of a Tidal River in East China

Author

Zhang Ming ; Jin Chi-Cheng ; Xu Li-Heng ; Ding Tao

Author_Institution

Dept. of Safety & Environ. Eng., China Jiliang Univ., Hangzhou, China

fYear

2012

fDate

28-30 May 2012

Firstpage

1389

Lastpage

1391

Abstract

Adsorption/desorption of contaminants on sediment is an important process that affect the distribution and fate of contaminants between water and sediment particles. The sediment of tidal river was disturbed by tide periodically and some of the sediment was suspended in water, which has great influence in the migration of contaminants in water body. In this study, the adsorption of lead by sediment of Qiantang River, a tidal river in east China, was studied. Results showed that the equilibrium isotherm of lead on sediment fitted the Langmuir model, and the adsorption amount of lead on sediment increased with the increase of temperature, indicating an endothermic process, and decreased with the increase of salinity due to the competitive effect. The highest adsorption amount of lead in different pH values (1~7) appeared at pH=4.

Keywords

adsorption; contamination; desorption; geochemistry; lead; pH; river pollution; rivers; sediments; tides; Langmuir model; Pb; Qiantang River; competitive effect; contaminant adsorption; contaminant desorption; contaminant distribution; contaminant migration; east China; endothermic process; equilibrium isotherm; lead adsorption; pH effect; pH value; salinity; sediment particles; temperature effect; tidal river; water body; Cadmium; Lead; Ocean temperature; Rivers; Sediments; Temperature distribution; adsorption; lead; sediment; tidal river;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Biotechnology (iCBEB), 2012 International Conference on

Conference_Location

Macau, Macao

Print_ISBN

978-1-4577-1987-5

Type

conf

DOI

10.1109/iCBEB.2012.171

Filename

6245392