摘要
以50kD和100kD超滤膜为研究对象,牛血清白蛋白为测试的标准物质,测试不同的过滤方式、运行时间、测试压力和料液浓度对超滤膜截留率和通量的影响。结果表明:50kD超滤膜的截留率,不同测试条件对其影响小,偏离值<±10%;100kD超滤膜的截留率,不同测试条件对其影响较大,偏离值可以达到50%。50kD和100kD超滤膜的通量受测试条件影响都较大,实验表明截留物质相对分子质量与超滤膜截留相对分子质量之间的相对大小对通量有较大的影响;长时间的过滤(>20 min),超滤膜采用错流过滤的方式比死端过滤更有优势,通量衰减慢且更稳定。
With 50kD and 100kD ultrafiltration membranes as the research object and bovine serum albumin as the test standard material,the effects of different filtration methods,running time,test pressure and feed liquid concentration on the ultrafiltration membrane retention and flux were tested.The results show that the retention rate of 50kD ultrafiltration membrane is little affected by different test conditions,and the deviation value is<±10%.The retention rate of 100kD ultrafiltration membrane is greatly affected by different test conditions,and the deviation value of different test conditions can reach 50%.The flux of 50kD and 100kD ultrafiltration membranes is greatly affected by the test condition,the results show that the relative size between the molecular weight of the trapped substance and the molecular weight of the ultrafiltration membrane has a great influence on the flux.For a long time of filtration(>20 min),the cross-flow filtration method of ultrafiltration membrane has more advantages than that of dead-end filtration,and the flux decay is slow and more stable.
作者
郭秋兰
陈顺权
王建明
谢绍业
Guo Qiulan;Chen Shunquan;Wang Jianming;Xie Shaoye(Guangzhou Institute of Advanced Technology,Guanghzou 510000,China)
出处
《山东化工》
CAS
2024年第5期26-28,31,共4页
Shandong Chemical Industry
基金
广东省重点领域研发计划(2023A1111030001)
广州市基础与应用基础研究项目(202201011763)
深圳市科技计划可持续发展专项(KCXFZ20201221173402006)。
关键词
超滤膜
截留率
通量
牛血清白蛋白
测试条件
ultrafiltration membrane
interception rate
flux
bovine serum albumin
test condition
