木炭粉烧结改性赤泥对磷酸盐的吸附特性研究  

Study on the Adsorption Characteristics of Phosphate by Sintered Modified Red Mud with Charcoal Powder

作　　者：杨智文 李龙江[1,2,3] 邱跃琴 Yang Zhiwen;Li Longjiang;Qiu Yueqing(Mining College,Guizhou University,Guiyang,Guizhou 550025;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources,Guiyang,Guizhou 550025;National&Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guizhou University,Guiyang,Guizhou 550025)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550025 [3]喀斯特地区优势矿产资源高效利用国家地方联合工程实验室,贵州贵阳550025

出　　处：《非金属矿》2022年第2期99-102,106,共5页Non-Metallic Mines

基　　金：国家自然科学基金(51964010)。

摘　　要：采用木炭粉烧结改性赤泥并进行吸附试验,探究吸附含磷废水的最佳吸附条件和吸附特性。结果表明,当赤泥、木炭粉、硅溶胶质量比为92∶5∶3,烧结时间为30 min,烧结温度为700℃时,吸附效果最佳,当反应温度为35℃,反应时间为18 h时,对磷酸盐的吸附率为99.26%。根据吸附等温线模型、吸附动力学计算,得出该吸附反应主要是单分子层化学吸附。The red mud modified by charcoal powder sintering was used for adsorption test to explore the optimal adsorption conditions and adsorption characteristics of phosphorus containing wastewater.The results show that when the mass ratio of red mud,charcoal powder and silica sol was 92∶5∶3,the sintering time was 30 min and the sintering temperature was 700℃,the adsorption effect was the best.When the reaction temperature was 35℃ and the reaction time was 18 h,the adsorption rate of phosphate was 99.26%.The adsorption reaction is mainly a single molecular layer chemisorption,as calculated from the adsorption isotherm model and the adsorption kinetics.

关 键 词：赤泥 含磷废水 烧结改性 吸附 

分 类 号：TQ126.35[化学工程—无机化工]