摘要
采用磁性复合微球为吸附载体,将其应用于水体中氯仿的吸附研究,在此过程中以紫外吸光光度法就磁性复合微球粒径、表面性质对吸附性能的影响作了考察,最终选取粒径为1.5μm、表面富含胺基磁性的复合微球为最佳吸附材料。与此同时,利用CODCr法作为评价手段对磁性的复合微球吸附氯仿的处理工艺条件进行了优化,确定每处理质量浓度为74 mg/L的氯仿溶液2 mL需用磁性复合微球约1 mg,最佳吸附时间为4.0 h,磁性复合微球的富集时间为4.0 h,此时对氯仿的吸附效率大于83%。
Magnetic composite microspheres were used as adsorption carrier to adsorb chloroform existed in water.In this process the diameter and surface properties of magnetic composite microspheres that influence the adsorption were studied via ultraviolet absorption spectrophotometry;the microspheres with mean diameter of 1.5 μm and surface containing amine group were chosen as the best adsorption carrier.Meanwhile,the technological conditions of adsorption chloroform were optimized by using CODCr method as evaluation method.It shows that when 1 mg magnetic composite microspheres are used to treat 2 mL chloroform solution with mass concentration of 74 mg/L,and the optimum adsorption time and the enrichment time of microspheres are both 4.0 h,the adsorption efficiency of chloroform is higher than 83%.
出处
《化学工程》
CAS
CSCD
北大核心
2010年第10期60-64,共5页
Chemical Engineering(China)
基金
国家自然科学基金(50773063)
国家973计划(2010CB635111)
西北工业大学基础研究基金(G9KY1020)
关键词
磁性复合微球
氯仿
水处理
CODCr法
magnetic composite microspheres
chloroform
water treatment
CODCr method
