Title :
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
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;
Conference_Titel :
Biomedical Engineering and Biotechnology (iCBEB), 2012 International Conference on
Conference_Location :
Macau, Macao
Print_ISBN :
978-1-4577-1987-5
DOI :
10.1109/iCBEB.2012.171
