A Facile Surface Modification for Antifouling Reverse Osmosis Membranes Using Polydopamine under UV Irradiation

Youngbin Baek, Benny D. Freeman, Andrew L. Zydney, Jeyong Yoon

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Polydopamine (PDA) is widely used to modify the membrane surface to increase the hydrophilicity with the goal of producing a low fouling membrane. However, current methods of PDA modification require alkali conditions and relatively long reaction times. Herein, we introduced the use of UV irradiation during the PDA modification of the membrane surface. The effects of UV irradiation on the characteristics of the synthesized PDA and the performance of the resulting membrane were evaluated. The PDA was rapidly synthesized in DI water, providing a significant increase in hydrophilicity and a reduction in surface roughness of the polyamide reverse osmosis (RO) membranes. The PDA-modified RO membranes exhibited excellent antifouling behavior upon exposure to alginate while maintaining good water permeability and salt rejection. The use of UV allowed the PDA modification to be conducted in DI water in less than 30 min, a significant improvement compared to current methods.

Original languageEnglish (US)
Pages (from-to)5756-5760
Number of pages5
JournalIndustrial and Engineering Chemistry Research
Volume56
Issue number19
DOIs
StatePublished - May 17 2017

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Osmosis membranes
Reverse osmosis
Surface treatment
Hydrophilicity
Irradiation
Membranes
Water
Membrane fouling
Alginate
Polyamides
Surface roughness
Salts
Nylons
Alkalies
polydopamine

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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abstract = "Polydopamine (PDA) is widely used to modify the membrane surface to increase the hydrophilicity with the goal of producing a low fouling membrane. However, current methods of PDA modification require alkali conditions and relatively long reaction times. Herein, we introduced the use of UV irradiation during the PDA modification of the membrane surface. The effects of UV irradiation on the characteristics of the synthesized PDA and the performance of the resulting membrane were evaluated. The PDA was rapidly synthesized in DI water, providing a significant increase in hydrophilicity and a reduction in surface roughness of the polyamide reverse osmosis (RO) membranes. The PDA-modified RO membranes exhibited excellent antifouling behavior upon exposure to alginate while maintaining good water permeability and salt rejection. The use of UV allowed the PDA modification to be conducted in DI water in less than 30 min, a significant improvement compared to current methods.",
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A Facile Surface Modification for Antifouling Reverse Osmosis Membranes Using Polydopamine under UV Irradiation. / Baek, Youngbin; Freeman, Benny D.; Zydney, Andrew L.; Yoon, Jeyong.

In: Industrial and Engineering Chemistry Research, Vol. 56, No. 19, 17.05.2017, p. 5756-5760.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A Facile Surface Modification for Antifouling Reverse Osmosis Membranes Using Polydopamine under UV Irradiation

AU - Baek, Youngbin

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AU - Yoon, Jeyong

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AB - Polydopamine (PDA) is widely used to modify the membrane surface to increase the hydrophilicity with the goal of producing a low fouling membrane. However, current methods of PDA modification require alkali conditions and relatively long reaction times. Herein, we introduced the use of UV irradiation during the PDA modification of the membrane surface. The effects of UV irradiation on the characteristics of the synthesized PDA and the performance of the resulting membrane were evaluated. The PDA was rapidly synthesized in DI water, providing a significant increase in hydrophilicity and a reduction in surface roughness of the polyamide reverse osmosis (RO) membranes. The PDA-modified RO membranes exhibited excellent antifouling behavior upon exposure to alginate while maintaining good water permeability and salt rejection. The use of UV allowed the PDA modification to be conducted in DI water in less than 30 min, a significant improvement compared to current methods.

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