公开(公告)号：US20160303518A1

公开(公告)日：2016-10-20

申请号：US15064280

申请日：2016-03-08

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Saira BANO ,  Asif MAHMOOD ,  Seong-Joong Kim ,  Kew Ho Lee

IPC: B01D71/42 ,  B01D69/12 ,  B01D67/00 ,  B01D61/14

Abstract: Provided is a nanocomposite ultrafiltration membrane including a hydrophobic polymer matrix impregnated with graphene oxide or reduced graphene oxide. The PAN/GO nanocomposite ultrafiltration membrane has improved mechanical properties, high permeability and a high salt rejection ratio, and excellent anti-fouling property and durability. Thus, the nanocomposite ultrafiltration membrane may be manufactured in the form of a membrane module applied to a water treatment system so that it may be utilized in an actual ultrafiltration separation process.

Abstract translation: 提供了一种纳米复合超滤膜，其包括浸渍有氧化石墨烯或氧化还原型石墨烯的疏水性聚合物基体。 PAN / GO纳米复合超滤膜具有改善的机械性能，高渗透性和高脱盐率，优异的防污性能和耐久性。 因此，纳米复合超滤膜可以以应用于水处理系统的膜组件的形式制造，从而可以在实际的超滤分离过程中使用。

公开(公告)号：US10427104B2

公开(公告)日：2019-10-01

申请号：US15064317

申请日：2016-03-08

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Saira Bano ,  Asif Mahmood ,  Seong-Joong Kim ,  Kew Ho Lee

IPC: B01D69/12 ,  B01D67/00 ,  C02F1/44 ,  B01D61/02 ,  B01D71/08 ,  B01D71/38

Abstract: Provided is a double crosslinked sodium alginate/polyvinyl alcohol composite nanofiltration membrane, including: a porous polymer support; and a sodium alginate/polyvinyl alcohol blend coating layer formed on the porous polymer support and having a first crosslinking structure formed by complexation with divalent metal ions and a second crosslinking structure formed by acetalization with aldehyde groups. The double crosslinked sodium alginate/polyvinyl alcohol composite nanofiltration membrane disclosed herein not only shows excellent chlorine resistance but also has improved water permeation flux and salt rejection ratio, and thus may be manufactured in the form of a spirally wound type membrane module and applied to a water treatment system in which it may be utilized for an actual nanofiltration separation process.