聚苯乙烯微塑料对罗丹明B的吸附性能研究  

Study on the adsorption properties of polystyrene microplastics on Rhodamine B

作　　者：刘俊彬 林超[1] 陈日耀[1,2] 刘键熙 LIU Junbin;LIN Chao;CHEN Riyao;LIU Jianxi(College of Environmental and Resource Sciences,College of Carbon Neutral Modern Industry,Fujian Normal University,Fuzhou 350117,China;Fujian Key Laboratory of Pollution Control&Resource Reuse,Fuzhou 350117,China)

机构地区：[1]福建师范大学环境与资源学院、碳中和现代产业学院,福建福州350117 [2]福建省污染控制与资源循环利用重点实验室,福建福州350117

出　　处：《应用化工》2024年第11期2551-2555,2561,共6页Applied Chemical Industry

基　　金：国家自然科学基金(21605020);福建省自然科学基金(2022J01651,2016J05027)。

摘　　要：研究了聚苯乙烯微塑料对于罗丹明B的吸附行为,结果表明,聚苯乙烯微塑料对罗丹明B的吸附在8 h基本达到平衡,平衡浓度为1.339 mg/g,吸附的最佳pH为4,盐度的质量分数为0.4‰,最大吸附容量为5.567 mg/g。通过吸附等温线和吸附动力学模型拟合发现其吸附行为更符合Freundlich等温吸附模型和准二级动力学吸附模型,说明了是一种单层表面吸附为主,多分子层吸附为辅的化学吸附行为。The adsorption behavior of polystyrene microplastics and Rhodamine B was investigated.The results showed that the adsorption of Rhodamine B by polystyrene microplastics basically reached equilibrium at 8 h,with an equilibrium concentration of 1.339 mg/g.The optimal pH for adsorption was 4,and the mass fraction of salinity is 0.4‰.The adsorption capacity reached 5.567 mg/g.The adsorption behavior was found to be more consistent with the Freundlich isothermal adsorption model and the pseudo-second-order kinetic adsorption model by adsorption isotherm and adsorption kinetic model fitting,which illustrated a chemical adsorption behavior dominated by adsorption on a monolayer surface and supplemented by adsorption on a multimolecular layer.

关 键 词：微塑料 吸附 罗丹明B 聚苯乙烯 

分 类 号：TQ9[化学工程]