Study on the Synthesis of Oxide TiO2 and Its Adsorption Behavior on Radioactive Waste Containing 63Ni
The adsorption method is gaining increasing attention in the treatment of radioactive waste liquid due to its advantages of simplicity and environmental friendliness.In this study,TiO2 adsorbent was synthesized using the hydrothermal method and characterized through SEM,XRD,and BET analysis.Subsequently,the impact of contact time on the adsorption of 63Ni2+was investigated.The results revealed that equilibrium for 63Ni2+adsorption onto TiO2 could be achieved within 10 minutes with a remarkable removal rate of 99.3％.The adsorption process followed both Langmuir's adsorption model and pseudo-second-order kinetic equation,with a maximum adsorption capacity of 32.1 mg/L at 25 ℃.Moreover,TiO2 demonstrated efficient capability in capturing 63Ni2+over a wide pH range(3-12),although its performance was influenced by K+when the concentration exceeded 0.5 mol/L.This study presents a novel approach for treating radioactive waste liquid containing 63Ni2+.
NETL
NSTL
万方数据
