Method for preparing high-loading iron cyanide complex/silicon dioxide hybrid materials

Abstract

The invention relates to a preparing method for ferrocyanide with high load / silica hybrid material, belonging to a preparing method for radionuclide ion absorbing material. The method uses the salt solution with metal ion such as Mn, Sn, Ti, Fe, and Ni so on to react with potassium (sodium) ferrocyanide so as to obtain nanometer particle of ferrocyannide. The particle is fixed by silica solution in water system or is fixed by polymerization siloxane in organic solvent and proper inorganic acid, organic amine or amine water is added to obtain hybrid gel. The hybrid gel is dried, rubbed and screened to obtain ferrocyanide with high load / silica hybrid material. The high load of the material is high and the absorption to nuclide ion is strong. In addition, the material intensity can satisfy the demand of packed bed. The particle diameter can be controlled so as to avoid the problem that the water resistance of bed layer generated by ferrocyanide used alone is overlarge.

Description

technical field

[0001] The invention relates to a preparation method of a radionuclide ion absorption material, in particular to a preparation method of a ferrocyanide / silicon dioxide hybrid material with a high loading capacity, and belongs to the technical field of material preparation and radioactive waste water treatment. Background technique

[0002] my country's energy policy has changed from "moderately developing nuclear power" to "actively developing nuclear power". By 2020, the domestic nuclear power installed capacity will increase from the current 8 million kW to about 40 million kW. After 2020, there will be even greater development. Whether the radioactive wastewater produced by the nuclear industry can be properly disposed of is one of the key links related to nuclear safety. It is a very meaningful work in the field of nuclear industry to research and develop efficient and highly selective radioactive wastewater treatment technology to maximize the miniatur...