Method for extracting palladium from high-level liquid waste

The invention provides a method for extracting palladium from high-level liquid waste, which belongs to the technical field of radioactive waste after treatment. The high-level liquid waste adopts nitric acid system, and the method comprises the following concrete steps of: a, adequately mixing the high-level liquid waste with extract phase; b, separating extract phase containing palladium from the mixture after extraction equilibrium; c, washing the separated extract phase containing palladium; d, repeating steps b and c 1 to 5 times; e, adding stripping agent to the washed extract phase containing palladium to perform back extraction; and the method is characterized in that triisobutyl phosphine sulfide (TiBPS) is adopted as extracting agent, and thinning agent is added for preparing the extract phase. The method has the following advantages: a, the extracting ratio of palladium in the nitric acid system is high by using TiBPS as extracting agent; b, the concentration range of adaptable ...

Method for extracting palladium from high-level liquid waste

The invention provides a method for extracting palladium from high-level liquid waste, which belongs to the technical field of radioactive waste after treatment. The high-level liquid waste adopts nitric acid system, and the method comprises the following concrete steps of: a, adequately mixing the high-level liquid waste with extract phase; b, separating extract phase containing palladium from the mixture after extraction equilibrium; c, washing the separated extract phase containing palladium; d, repeating steps b and c 1 to 5 times; e, adding stripping agent to the washed extract phase containing palladium to perform back extraction; and the method is characterized in that triisobutyl phosphine sulfide (TiBPS) is adopted as extracting agent, and thinning agent is added for preparing the extract phase. The method has the following advantages: a, the extracting ratio of palladium in the nitric acid system is high by using TiBPS as extracting agent; b, the concentration range of adaptable ...

Solution pretreating method and beginning end of purex flow process and used silica gel and its preparing process

Separating material for separating and extracting technetium from acidic solution system

The invention discloses a novel separating material, namely nano-aperture silicon-based quaternary ammonium salt, for separating and extracting technetium from an acidic solution system. The novel separating material has the advantages of good radiation resistance, high separation efficiency and low risk of loss of functional monomers, and is an ideal material suitable for separating trace technetium from radioactive waste liquids.