~(99)Tc在活性炭上的吸附行为

THE SORPTION BEHAVIOUR OF ~(99)Tc ON ACTIVATED CARBON

摘要: <正> 一、前言在高放废物处置中,~(99)Tc是长半衰期的裂变产物(T_(1/2)=2.12×10~5a),多以阴离子TcO_4~-形式存在于溶液中。已经证明,一般地质介质及回填材料对锝的吸附很差,因此,研究对锝有较高吸附性的材料已经引起人们的重视。其中,人工材料活性炭对锝的吸附也进行了研究,结果表明,活性炭对锝有较高的吸附性,特别是椰壳活性炭对锝的吸附性更好。

Abstract: The sorption behaviour of ~(99)Tc on apricot-pit activated carbon with batch experiment is studied. The influence of such factors as sorbent particie size, temperature, pH value on sorption ratio, and the Freundlich sorption isotherms are reported in this paper.