Title :
Effect of pH and Temperature on Absorption-Desorption of Cu²+ in Soil Nearby a Copper Tailings Yard
Author :
Wang, Y.B. ; Zhang, X.Q.
Author_Institution :
Coll. of Life Sci., Anhui Normal Univ., Wuhu, China
Abstract :
A batch experiment was conducted to study the effect of pH and temperature on absorption and desorption of copper in soil, soil samples were collected from the vicinity of a copper tailings yard. The results showed that the pH value is one of the most important factors that influence the adsorption of copper. The Cu adsorption was reduced at the low pH. By increasing the pH value, the adsorption increased. As the pH arose, the Cu desorption was decreased. The temperature is another factor that may influence the Cu adsorption. The Cu adsorption increased with the elevation of temperature, while the tendency of Cu2+ desorption declined. Because of the temperature of 25°C is suitable for ions exchange, the desorption rate at 25°C appeared to be a bit higher in this study.
Keywords :
absorption; copper; desorption; ion exchange; pH; positive ions; soil; soil pollution; thermochemistry; Cu2+; batch experiment; copper tailings yard; ion exchange; pH effects; soil Cu2+ absorption; soil Cu2+ desorption; temperature 25 degC; temperature effects; Biological materials; Biology; Chemicals; Copper; Educational institutions; Environmentally friendly manufacturing techniques; Industrial pollution; Soil pollution; Temperature; Water pollution;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5516809
