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通过甲醛与多酚的交联反应低成本地制备了原位固化木麻黄树皮(YGMS),并考察了YGMS对稀土金属离子Dy(Ⅲ)的吸附行为.研究结果表明,YGMS对Dy(Ⅲ)的吸附容量大,在本研究的条件下最大吸附容量达205.5 mg·g-1.YGMS对Dy(Ⅲ)的吸附行为符合Freundlich方程和拟二级速度方程.随着Dy(Ⅲ)初始质量浓度和pH值的升高,YGMS对Dy(Ⅲ)的吸附容量增大,但pH>5后溶液出现沉淀.随温度的升高YGMS对Dy(Ⅲ)的吸附容量增大.
The in situ cured Casuarina equisetiva (YGMS) was prepared by cross-linking reaction of formaldehyde with polyphenols, and the adsorption behavior of rare earth metal ions Dy (Ⅲ) on YGMS was investigated. ) Adsorption capacity was large, and the maximum adsorption capacity was 205.5 mg · g-1 under the conditions of this study. The adsorption behavior of Dy (Ⅲ) by YGMS conformed to the Freundlich equation and quasi-second-order velocity equation. The adsorption capacity of Dy (Ⅲ) by YGMS increased with increasing concentration and pH, but the solution was precipitated when pH> 5. The adsorption capacity of YGMS to Dy (Ⅲ) increased with increasing temperature.