Influence of nanoparticle inclusions on the performance of reverse osmosis membranes

Yifan Liu, Jian Tan, Woongchul Choi, Jui Hung Hsu, Dong Suk Han, Arum Han, Ahmed Abdel-Wahab, Choongho Yu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

With the rising demand for sustainable production of fresh water from saline sources, various types of water desalination membranes have been reported. Recent papers have used nanomaterials to improve water flux and salt rejection. Herein, we report comparative studies about the performance of reverse osmosis membranes whose selective layers were modified by embedding two different types of hydrophilic filler particles for higher water permeability as well as coating the surface for better antifouling performance. To evaluate the influence of the fillers and coating on the membrane performance, seven different types of samples were prepared and tested by altering one parameter at a time for systematic studies. When zeolite and graphene oxide were embedded in the selective layer made of polyamide, the water permeability was greatly improved. Graphene oxide and polyethylene glycol layers coated on the selective layer resulted in better antifouling performances. We observed a water permeability of 13.2 L m-2 h-1 bar-1 at 96% salt rejection and 15.9 L m-2 h-1 bar-1 at 94.3% salt rejection, which are better than or comparable to those of the unmodified polyamide membranes and superior to many other advanced membranes in the literature. Our systematic and comparative studies identified the influence of each nanoparticle and its concentration on the membrane performances (water permeability and salt rejection) and characteristics (surface roughness and hydrophilicity), which will be of great help to select the nanomaterials and their concentrations for better membrane performances.

Original languageEnglish
Pages (from-to)411-420
Number of pages10
JournalEnvironmental Science: Water Research and Technology
Volume4
Issue number3
DOIs
Publication statusPublished - 1 Mar 2018

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Osmosis membranes
Reverse osmosis
Nanoparticles
membrane
Membranes
Water
permeability
Salts
salt
antifouling
Polyamides
Nanostructured materials
water
Graphene
Fillers
coating
comparative study
oxide
Coatings
Oxides

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Influence of nanoparticle inclusions on the performance of reverse osmosis membranes. / Liu, Yifan; Tan, Jian; Choi, Woongchul; Hsu, Jui Hung; Han, Dong Suk; Han, Arum; Abdel-Wahab, Ahmed; Yu, Choongho.

In: Environmental Science: Water Research and Technology, Vol. 4, No. 3, 01.03.2018, p. 411-420.

Research output: Contribution to journalArticle

Liu, Yifan ; Tan, Jian ; Choi, Woongchul ; Hsu, Jui Hung ; Han, Dong Suk ; Han, Arum ; Abdel-Wahab, Ahmed ; Yu, Choongho. / Influence of nanoparticle inclusions on the performance of reverse osmosis membranes. In: Environmental Science: Water Research and Technology. 2018 ; Vol. 4, No. 3. pp. 411-420.
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