不同生物炭对Y3+的吸附性能研究  

Study on the Adsorption Performance of Different Biochar for Y^(3+)

作　　者：和松 刘晶静[1] HE Song;LIU Jingjing

机构地区：[1]江西理工大学能源与机械工程学院,江西南昌330000

出　　处：《化工设计通讯》2024年第6期89-92,共4页Chemical Engineering Design Communications

摘　　要：生物炭是一种应用广泛的重金属离子吸附剂,为探寻不同生物炭对钇离子(Y^(3+))高效吸附的条件,以污泥炭(WBC)、猪粪炭(ZBC)和稻壳炭(DBC)3种生物炭以及Y^(3+)为研究对象,采用吸附实验研究不同因素对吸附效果的影响。结果表明:在生物炭添加量为1.5 g、溶液pH>5时的环境最适于对Y^(3+)的吸附,同时最为经济、吸附效率也最高,温度、初始浓度对Y^(3+)吸附有显著的影响;吸附动力学和等温吸附分析表明,吸附过程符合准二级动力学模型和Langmuir模型,表明该过程为单分子层吸附过程;该研究为稀土Y^(3+)吸附提供合适吸附剂和最佳条件,为离子型稀土矿区矿后修复提供理论支持。Biochar is a widely used adsorbent for heavy metal ions to explore the conditions for efficient adsorption of yttrium ions(Y^(3+))by different types of Biochar,this study focused on three types of Biochar:sewage peat(WBC),pig manure charcoal(ZBC),rice husk charcoal(DBC),and Y^(3+).Adsorption experiments were conducted to investigate the effects of different factors on the adsorption effi ciency.The results show that the optimal environment for Y^(3+)adsorption is when the addition amount of Biochar is 1.5 g and the solution pH is greater than 5.At the same time,it is the most economical and has the highest adsorption efficiency.Temperature and initial concentration have a signifi cant impact on Y^(3+)adsorption;The adsorption kinetics and isothermal adsorption analysis indicate that the adsorption process conforms to the quasi second order kinetic model and Langmuir model,indicating that the process is a single-layer adsorption process;This study provides suitable adsorbents and optimal conditions for the adsorption of rare earth Y^(3+),and provides theoretical support for the post mining remediation of ion type rare earth mining areas.

关 键 词：生物炭 稀土钇离子 吸附 

分 类 号：X505[环境科学与工程—环境工程]