【摘要】 以伊利石-石灰石-石膏焙烧活化物为前驱体,采用水热法成功合成了沸石相吸附材料（ZAM）,通过XRD和SEM表征其微观结构并考察了其对水溶液中Ni²⁺的吸附性能,结果表明,制备ZAM的较佳工艺条件为:硅铝比2.0,水热反应温度150℃,水热反应时间4 h。此条件下合成的ZAM对Ni²⁺有较强的吸附性能,在温度25℃,pH值为6时,ZAM吸附Ni²⁺在180 min内达到平衡,吸附剂的较佳投加量为0.4 g/L、较大吸附量为121.21 mg/g,吸附过程符合拟二级动力学方程和Freundllich吸附模型,为以离子交换为主的多分子层的化学吸附。更多还原

【Abstract】 Zeolite phase adsorption materials （ZAM） were successfully synthesized from calcined treatment of a solid-state mixture containing illite,limestone and gypsum as the precursor by hydrothermal method.Their microstructures were characterized by XRD and SEM,and their adsorption characteristics for Ni²⁺ in aqueous solutions were studied.The results showed that the optimal conditions for the preparation of zeolite phase adsorption materials were:the ratio of silicon to aluminum of 2.0,hydrothermal temperature of 150℃ and hydrothermal time of 4 h.Testing at a temperature of 25℃ and solution initial pH value of 6 showed that the adsorption process of Ni²⁺ by the optimum zeolite phase adsorption materials reached equilibrium within 180 min.The maximum adsorption amount of zeolite phase adsorption materials for Ni²⁺ could reach 121.21 mg/g at the optimal dosage of 0.4 g/L.The adsorption of Ni²⁺ by ZAM was in accordance with the pseudo second-order kinetic equation and the Freundlich isotherm adsorption model,which proved that adsorption was dominated by ion exchange and multi-layer chemical adsorption.更多还原