纳滤膜去除水中痕量雌二醇的试验研究  

Applied Study on the Treatment of Trace Estradiol from Water by NF Membrane

作　　者：张虹[1] 王磊[1] 程爱华[1,2] 王旭东[1] 孙晓丽[1] 林峰[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]西安科技大学地质与环境科学系,陕西西安710054

出　　处：《环境科学与技术》2009年第5期48-51,共4页Environmental Science & Technology

基　　金：国家自然科学基金项目资助(50578131);霍英东教育基金高等院校青年教师优选课题资助(94003);陕西省自然科学基金项目资助(2005E240);陕西省教育厅专项科研计划项目(05JK243,07JK294)

摘　　要：以水中痕量雌二醇为研究对象,考察了操作压力、pH、离子强度以及腐殖酸的存在对纳滤膜截留雌二醇的影响。结果表明,NF90膜对雌二醇的去除效果显著。纯水条件下,当操作压力为0.4MPa时雌二醇的截留率最高;随着离子强度的增大截留率下降,离子强度为0时,截留效果最好;在pH为10.5时,接近雌二醇的离解常数(pKa),截留率最大。腐殖酸共存时,截留率随pH和离子强度的变化趋势与纯水条件下相似。The removal of tracc estradiol from synthetic water by nanofiltration（NF） membrane was investigated, the impacts of operating pressure,pH,ionic strength and humic acid were studied.The experimental results showed that NF90 membrane has obvious removal effects. Under the pure water conditions,the highest retention of estradiol was at 0.4 MPa. An increace in ionic strength results in an reduction in retention,when the ionic strength was zero,there was the highest retention;When the pH values at 10.5 nearly appoach the dissociation coefficient pKa of estradiol,the retention was the highest.The variation tendency of the retention with pH and ionic strength in presence of humic acid was in line with pure water.

关 键 词：雌二醇 纳滤 截留率 

分 类 号：X131[环境科学与工程—环境科学] TQ028.8[化学工程]