文档介绍：Effect of pH and temperature on absorption-
desorption of Cu2+ in soil nearby a copper tailings
yard
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College of Life Sciences College of Life Sciences
Anhui Normal University Anhui Normal University
Wuhu, China Wuhu, China
wybzl@ zhangxuqing_84@
Abstract—A batch experiment was conducted to study the effect the behavior of adsorption-desorption of heavy metal ions on
of pH and temperature on absorption and desorption of copper the solid-liquid interfaces of soil depend on the feature of
in soil, soil samples were collected from the vicinity of a anic and ponents of the soil. The
tailings yard. The results showed that the pH value is one of the concentration of heavy metals, biological activity, and
most important factors that influence the adsorption of copper. biological effectiveness or toxicity are under the control of
The Cu adsorption was reduced at the low pH. By increasing the
pH value, the adsorption increased. As the pH arose, the Cu adsorption-desorption of heavy metals in the soil, which has
desorption was decreased. The temperature is another factor that been regarded as a most active field of soil chemistry, plant
[8~12]
may influence the Cu adsorption. The Cu adsorption increased nutrition and environmental science since 1960s .
with the elevation of temperature, while the tendency of Cu2+ In