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:研究了氧化铝自水溶液中对Eu(Ⅲ )离子的吸附和解吸附规律 .结果表明 :①吸附等温线服从Lang muir极限公式 ,吸附过程为焓驱动的放热、熵减的自发过程 ;②吸附服从Lagergren一级动力学方程 ,表观活化能为 43.43kJ·mol-1,属内扩散控制 ;③溶液pH值对吸附影响显著 ,S形曲线的突跃范围为pH =4.0～ 6 .5 ;④微波和超声波能明显加快解吸和提高解吸率 ,用 0 .1mol·L-1HNO3 在微波下解吸 30min ,解吸率达 96 % .
: The law of adsorption and desorption of Eu (Ⅲ) ions from aqueous solution was investigated. The results showed that: ①The adsorption isotherms obeys Langmuir limit formula, and the adsorption process is the exothermic and entropy-reduction spontaneous process driven by enthalpy; ②The adsorption Under the first-order Lagergren kinetic equation, the apparent activation energy is 43.43 kJ · mol-1, which is controlled by internal diffusion. ③ The pH value of the solution has a significant effect on the adsorption. The range of the S-shaped curve is pH = 4.0-6.5. ④ microwave and ultrasound can significantly accelerate the desorption and increase the desorption rate, with 0. 1mol · L-1HNO3 desorption in the microwave 30min, desorption rate of 96%.