摘要：Using diatomite as the main material, diatomite-based porous ceramsite was prepared by wet grinding,molding by rolling and high-temperature calcinations. The structure and properties were characterizedby X-ray diffraction, Scanning Electron Microscope, Mercury Injection Apparatus and so on. Theultraviolet-visible spectrophotometer was used to analyse the adsorption properties of diatomitebased porous ceramsite on Cu2+. The results show that the pore size distribution of materials is300~3500 nm, the specific surface area is 6.14 m2/g, and the pore porosity is 47.8%. Plenty ofunsaturated bonds, such as -OH, Si-O-Si and O-Si-O, cluster on the surface of ceramsite. Theremoval rate of Cu2+ reaches 92.5%.
