【摘要】 详细考察了CaTiO3投加量、溶液pH值以及亚甲基蓝(methylene blue,MB)初始质量浓度对MB在CaTiO3上的平衡吸附率的影响,分析了MB在CaTiO3上的吸附等温式.结果表明,CaTiO3投加量对MB的平衡吸附率影响很小.溶液pH值为7时MB的平衡吸附率高于溶液pH值为4和10时MB的平衡吸附率,说明中性条件有利于MB在CaTiO3上的吸附.MB在CaTiO3上的平衡吸附率随MB初始质量浓度增加而显著降低.MB在CaTiO3上的吸附符合Langmuir吸附等温式,MB在CaTiO3上的饱和吸附量为1.64 mg/g.更多还原

【Abstract】 The effects of CaTiO3 dosage,solution p H value,and initial methylene blue( M B)mass concentration on equilibrium adsorption rate of M B on CaTiO3 were experimentally investigated in detail. The adsorption isotherm of M B on CaTiO3 was also discussed. The results showed that CaTiO3 dosage has little effect on equilibrium adsorption rate of M B. The equilibrium adsorption rate of M B on CaTiO3 at the solution p H value of 7 is greater than that at the solution p H values of 4 and 10,suggesting that neutral condition is in favor of the adsorption of M B on CaTiO3. The equilibrium adsorption rate of M B on CaTiO3 decreases significantly with increasing initial mass concentration of M B. The adsorption of M B on CaTiO3 follows the Langmuir adsorption isotherm and the adsorption saturation capacity of M B on CaTiO3 is 1. 64 mg / g.更多还原