摘要
微塑料与孔雀石绿在近岸海域养殖区普遍存在.本文对原始的聚乙烯微塑料和老化的聚乙烯微塑料吸附孔雀石绿进行了研究.探索了接触时间、初始溶液浓度、初始pH值以及离子强度等参数对吸附性能的影响.结果表明,聚乙烯微塑料和老化聚乙烯微塑料对孔雀石绿的吸附过程更好地符合Elovich方程和Langmuir方程;聚乙烯微塑料与孔雀石绿的主要作用机理为静电相互作用和氢键.溶液pH(pH 2—6)升高导致孔雀石绿吸附量显著增加;溶液离子强度的增大,聚乙烯对孔雀石绿吸附效率则明显降低.
Microplastics and malachite green are ubiquitous in the coastal aquaculture areas.The effects of contact time,initial solution concentration,initial solution pH and ionic strength on malachite green adsorption by pristine polyethylene microplastics and aged polyethylene microplastics were investigated,respectively.The results showed that the adsorption of malachite green onto both polyethylene microplastics conformed to Elovich equation and Langmuir equation very well.The main mechanism of their interaction with malachite green might be electrostatic interaction and intermolecular hydrogen bond.The adsorption capacity increased with an increase in solution pH value(pH 2—6),while the adsorption efficiency of polyethylene to malachite green decreased with an increase in solution ionic strength.
作者
林陆健
汤帅
王学松
冯安芯
韩照祥
孙璇
赵雨
LIN Lujian;TANG Shuai;WANG Xuesong;FENG Anxin;HAN Zhaoxiang;SUN Xuan;ZHAO Yu(School of Environmental and Chemical Engineering,Jiangsu Ocean University,Lianyungang,222005,China)
出处
《环境化学》
CAS
CSCD
北大核心
2020年第9期2559-2566,共8页
Environmental Chemistry
基金
江苏省高等学校自然科学研究项目(19KJA430009)
江苏省研究生培养创新工程研究生科研与实践创新计划(KYCX19-2276,KYCX19-2268)
国家大学生创新培训项目(SZ201911641401001)资助
关键词
聚乙烯微塑料
老化
孔雀石绿
吸附
机理
polyethylene microplastics
aged
malachite green
adsorption
mechanism
作者简介
通讯联系人:韩照祥,Tel:13645138281,E-mail:895561709@qq.com
