XSC-700硼选择性树脂对硼酸的吸附性能研究

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Adsorption Characteristics of Boron on Boron Selective Resin

Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 以硼选择性树脂为固定相研究树脂对硼酸的吸附性能。研究发现,硼酸的平衡吸附量受树脂类型的影响明显,平衡吸附量由大到小树脂类型的排列顺序为氢氧型>氯型>硫酸型。硼酸的平衡吸附量随原料浓度的增加而增加,随温度的升高而减少,随原料液的酸度降低而增加。吸附等温线的拟合表明,氯型和氢氧型硼选择性树脂对硼酸的吸附过程都符合Freundlich吸附等温方程,属优惠型吸附。吸附热力学研究证明,吸附为自发、放热和熵减少的过程;硼选择性树脂对硼的吸附速率由颗粒扩散控制。
- 硼选择性树脂 /
- 吸附等温线 /
- 吸附热力学 /
- 吸附动力学
Abstract: Research was carried on the adsorption of boron on boron selective resin.The results show that the quantum of adsorption of boron is obviously affected by the type of resin,and the turn is OH^-＞Cl^-＞SO₄^2-.For the same type resin,the adsorptive quantity of boron increases with the concentration of feed solution and decreases with the temperature rise;The isotherm of adsorption is in accordance with Freundlich isotherm equation,the adsorption belongs to favourable type and the process of adsorption is spontaneous and radiative.Particle diffusion is the key step of adsorption.
- Boron selected resin /
- Adsorption isotherm /
- Adsorption thermodynamics /
- Adsorption dynamics