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采用共沉淀方法室温下制备分别含有Ca和Ba的磷酸盐纳米颗粒,并作为吸附剂用于水溶液中甲基蓝染料的去除。实验通过研究不同接触时间和不同初始浓度的甲基蓝溶液对上述两种吸附剂吸附甲基蓝量的影响,对吸附过程进行等温吸附线和吸附动力学分析。结果表明:在20min内,两种吸附剂都达到吸附平衡,而且对甲基蓝的吸附符合准二级动力学方程。磷酸盐对甲基蓝的吸附性能满足Langmuir吸附等温线方程。
Phosphate nanoparticles containing Ca and Ba respectively were prepared at room temperature by coprecipitation method and used as adsorbents for the removal of methyl blue dye in aqueous solution. The effect of methyl blue solution with different initial contact time and different initial concentration on the amount of methyl blue adsorbed by the above two adsorbents was studied in this experiment. The adsorption isotherm and adsorption kinetics were analyzed. The results showed that both adsorbents reached adsorption equilibrium within 20 min, and the adsorption of methyl blue was in accordance with quasi-second-order kinetic equation. Phosphate adsorption of methyl blue to meet the Langmuir adsorption isotherm equation.