Cellulose acetate/SiO2-poly(2-Acrylamido-2-methylpropane sulfonic acid) hybrid nanofiltration membrane: application in removal of ceftriaxone sodium

被引:16
作者
Mahdavi, Hossein [1 ]
Bagherifar, Rafie [1 ]
机构
[1] Univ Tehran, Coll Sci, Sch Chem, POB 14155-6455, Tehran, Iran
关键词
Nanofiltration; Ceftriaxone removal; Cellulose acetate; Mixed matrix membrane; Modified silica nanoparticles; ULTRAFILTRATION MEMBRANES; WASTE-WATER; SEPARATION; NANOPARTICLES; PERFORMANCE; REJECTION; ANTIBIOTICS; AMOXICILLIN; MECHANISMS; ETHANOL;
D O I
10.1007/s13738-018-1470-4
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
tRemoval of ceftriaxone sodium antibiotic from water using cellulose acetate (CA) mixed matrix nanofiltration membranes was investigated in this work. Silica nanoparticles were functionalized with (3-aminopropyl)triethoxysilane (APTES). Then, the hydrophilic and negatively charged 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) monomer was grafted from the surface of the amino-functionalized silica nanoparticles via surface-initiated redox polymerization. Finally, CA/silica and CA/modified silica nanocomposite membranes were prepared via phase inversion method, and the rejection of ceftriaxone sodium was studied. Rejection ratios were about 90 and 96% for CA/silica and CA/modified silica membranes at pH 8, respectively, wherein both were higher compared to the neat CA membrane. In fact, in case of nanocomposite membranes, size exclusion and charge repulsion between negatively charged functional groups of the membrane and anionic groups of drug operated synergistically at alkaline pH values, and the pharmaceutical rejection was improved. [GRAPHICS]
引用
收藏
页码:2839 / 2849
页数:11
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