锆改性颗粒活性氧化铝饮用水除氟研究
发布时间：2018-09-13 14:42
【摘要】：对锆改性颗粒活性氧化铝(Zr-GAA)的改性条件进行了研究,并对Zr-GAA的除氟性能进行了评价。结果表明,制备Zr-GAA锆的最佳质量浓度为2.0 g/L,此时锆的负载量为32.58 mg/g;Zr-GAA的吸附平衡时间为180min,吸附速率比GAA提高25%以上;Zr-GAA在低浓度下对氟离子吸附量提高显著,在氟离子的平衡浓度为1.0mg/L时,其吸附量为GAA的5.25倍;Zr-GAA的适用p H范围为4.5~9.7,较GAA明显增大;SO2-4和HCO-3对ZrGAA吸附量的影响较大。
[Abstract]:The modification conditions of zirconium modified granular active alumina (Zr-GAA) were studied and the defluorination performance of Zr-GAA was evaluated. The results showed that the optimum mass concentration of Zr-GAA zirconium was 2.0 g / L, and the adsorption equilibrium time of zirconium loading was 32.58 mg/g;Zr-GAA, and the adsorption rate was more than 25% higher than that of GAA. When the equilibrium concentration of fluorine ion is 1.0mg/L, the suitable pH range of GAA is 5.25 times that of Zr-GAA, which is significantly larger than that of GAA and so _ 2-4 and HCO-3 on the adsorption capacity of ZrGAA.
【作者单位】： 北京化工大学化学工程学院;
【分类号】：TQ424.2;R123.6
[Abstract]:The modification conditions of zirconium modified granular active alumina (Zr-GAA) were studied and the defluorination performance of Zr-GAA was evaluated. The results showed that the optimum mass concentration of Zr-GAA zirconium was 2.0 g / L, and the adsorption equilibrium time of zirconium loading was 32.58 mg/g;Zr-GAA, and the adsorption rate was more than 25% higher than that of GAA. When the equilibrium concentration of fluorine ion is 1.0mg/L, the suitable pH range of GAA is 5.25 times that of Zr-GAA, which is significantly larger than that of GAA and so _ 2-4 and HCO-3 on the adsorption capacity of ZrGAA.
【作者单位】： 北京化工大学化学工程学院;
【分类号】：TQ424.2;R123.6
【共引文献】
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