Preparation of Sands Modified by Aluminous Salt and its Adsorption Capability of CD2+
In this experiment quartz sand was chosen as a carrier to be coated by aluminous salt under alkaline condition, and then the specific surface area was tested, and the adsorption capability and Cd2+ removal influencing factors of modified sand were studied. The investigation results showed that the specific surface area of modified sand was 75.244m2/g which was 9.38 times of that of original sand; the removal efficiency of Cd2+ by aluminous salt modified sand reached 59% contrast to 39% of original sand with pH 7.00. It was also found that the removal efficiency of Cd2+ by the aluminous salt modified sand was reduced with the increase of initial concentration of Cd2+ solution, and was enhanced with the increase of pH value, the Cd2+ removal efficiency was almost 71% with pH 9.0.
C. S. Ding et al., "Preparation of Sands Modified by Aluminous Salt and its Adsorption Capability of CD2+", Applied Mechanics and Materials, Vols. 130-134, pp. 856-859, 2012