塑料科技2025，Vol.53Issue(5)：8-13,6.DOI:10.15925/j.cnki.issn1005-3360.2025.05.002
不同粒径聚苯乙烯微塑料对铜离子的吸附研究
Study on Adsorption of Copper Ions by Polystyrene Microplastics with Different Particle Sizes
摘要
Abstract
The article focused on the adsorption effects of two different sizes of polystyrene microplastics(PS-MPs)on Cu2+in aqueous solutions and their underlying mechanisms.The results showed that both 30-mesh and 200-mesh PS had the ability to adsorb Cu2+,and the pseudo-second-order kinetic model could fit the adsorption capacity of PS well.By fitting the adsorption isotherm results with the Langmuir model and Freundlich model,it was found that the Freundlich model was more suitable for describing the isothermal adsorption characteristics of PS-MPs on Cu2+,that is,the adsorption process was mainly multilayer adsorption.In addition,the adsorption capacity of PS for Cu2+first increased and then decreased with the increase of pH value,and the maximum adsorption capacity was reached at a pH value of 7.With the increase of Na+concentration,the adsorption capacity of PS gradually decreased.Meanwhile,the particle size of PS was also an important factor affecting the adsorption of heavy metals by PS-MPs,and the smaller the PS particle size,the stronger the adsorption capacity for Cu2+.关键词
微塑料/聚苯乙烯/铜离子/吸附Key words
Microplastics/Polystyrene/Copper ion/Adsorption分类
环境科学引用本文复制引用
张志琴,吕梅月,李丹,张志敏..不同粒径聚苯乙烯微塑料对铜离子的吸附研究[J].塑料科技,2025,53(5):8-13,6.基金项目
山西省基础研究计划自由探索类青年科学研究项目(202403021212116) （202403021212116）
山西省高等学校科技创新项目(2024L438) （2024L438）
山西工学院2023年第二批高层次人才科研启动经费(013016) （013016）
