不同生物炭对Y3+的吸附性能研究
Study on the Adsorption Performance of Different Biochar for Y3+
和松 1刘晶静1
作者信息
- 1. 江西理工大学能源与机械工程学院,江西南昌 330000
- 折叠
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(Y3+)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Y3+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Y3+的吸附,同时最为经济、吸附效率也最高,温度、初始浓度对Y3+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Y3+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.
Abstract
Biochar is a widely used adsorbent for heavy metal ions to explore the conditions for efficient adsorption of yttrium ions(Y3+)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 Y3+.Adsorption experiments were conducted to investigate the effects of different factors on the adsorption efficiency.The results show that the optimal environment for Y3+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 significant impact on Y3+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 Y3+,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Key words
biochar/rare earth yttrium ion/adsorb引用本文复制引用
出版年
2024
NETL
NSTL
万方数据