Influence of polydopamine deposition conditions on pure water flux and foulant adhesion resistance of reverse osmosis, ultrafiltration, and microfiltration membranes

McCloskey, Bryan D.; Park, Ho Bum; Ju, Hao; Rowe, Brandon W.; Miller, Daniel J.; Chun, Byeong Jae; Kin, Katherine; Freeman, Benny D.

doi:10.1016/j.polymer.2010.05.008

Cited by 348 publications

(286 citation statements)

References 33 publications

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“…Both physical and chemical types of the polymer impose the membrane manufacturing [62]. An acceptable RO membrane has to be resistant against chemicals and microbes [63].…”

Section: Ro Membrane Materialsmentioning

confidence: 99%

Short Communication: Requiring Reverse Osmosis Membranes Modifications – An Overview

Ghernaout¹

2017

AJCHE

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Do really reverse osmosis (RO) membranes need modification to cover their disadvantages or enhance their efficiency? Are there any defects in RO membranes manufacturing that require modification? These questions are discussed here in this short review. Through the world, there are thousands of patents, publications, and PhD theses dealing with surface modification and grafting of RO membranes. This growing phenomenon should attract the attention of the scientific community for technologic and economic reasons. Due to the increasing water pollution levels, which overpassed the RO membranes capacities, there is an urgent need to manufacture RO membranes, with multidisciplinary characteristics and high performance regarding both salts removal and fouling resistance, before sending them to the market and avoiding to think to their following modification.

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“…Both physical and chemical types of the polymer impose the membrane manufacturing [62]. An acceptable RO membrane has to be resistant against chemicals and microbes [63].…”

Section: Ro Membrane Materialsmentioning

confidence: 99%

Short Communication: Requiring Reverse Osmosis Membranes Modifications – An Overview

Ghernaout¹

2017

AJCHE

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“…The hydraulic resistance of porous or non-porous membranes can be calculated using the following equation [10]: where R i is the hydraulic resistance of the membrane (m −1 ), ∆P is the transmembrane pressure (Pa), η is the feed solution viscosity (Pa·s), J w is the pure water flux (m 3 ·m −2 ·s −1 ), and V (m 3 ) is the volume of water collected within a time period t (s) using a membrane of area a (m 2 ). The modification procedures can influence the hydraulic resistance of the membranes.…”

Section: Hydraulic Resistance Of Polydopamine and Tio 2 -Modified Memmentioning

confidence: 99%

“…Prior to each modification or test, the commercial TFC membranes were immersed in distilled water for 12 h [10]. Before using these membranes, they were all dried using compressed air for 5 min.…”

Section: Surface Modification Of a Thin Film Composite (Tfc) Membranementioning

confidence: 99%

Remarkable Anti-Fouling Performance of TiO2-Modified TFC Membranes with Mussel-Inspired Polydopamine Binding

et al. 2017

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It has been proven that a versatile bio-glue, polydopamine, can firmly bind TiO 2 (titanium dioxide) nanoparticles on thin film composite (TFC) membranes. In this work, the anti-fouling behaviour of this novel polydopamine-TiO 2 -modified membrane is evaluated, based on the static bovine serum albumin (BSA) surface adhesion of the membranes and the relative flux decline. The results show that the anti-fouling performance of this new membrane is significantly improved in dark conditions when compared with the neat TFC membrane and the membranes only modified by polydopamine or TiO 2 . When filtrating a 0.5 g·L −1 BSA solution in dark conditions, the flux of the polydopamine-TiO 2 -modified membrane remains constant, at 95% of its pure water flux after 30 min filtration for 8 h of the experiment. This indicates a significant increase in anti-fouling performance when compared to the 25% flux decline observed for the neat TFC membrane, and to the 15% flux decline of those only modified by polydopamine or TiO 2 . This remarkable anti-fouling behaviour is attributed to an improved and uniform hydrophilicity, due to the presence of TiO 2 and to the regular nanosized papillae structure of the polydopamine-TiO 2 coating. Furthermore, since dopamine-modified TiO 2 has visible light-induced photocatalytic properties, the membrane's photocatalytic performance was also tested in light conditions. However an increase of flux and decrease of retention were observed after 24 h of continuous illumination, indicating that light may also affect the top layer of the membrane.

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“…Questions regarding the ligands that can be used to functionalize pores are also diicult to address, in particular if discrimination such as that is seen in potassium channels, is desirable. On the other hand, their application to DNA sequencing has reached commercialization level with several technologies licensed to startup organizations [3].…”

Section: Biomimetic Nanoporesmentioning

confidence: 99%

Challenges and Opportunities for Biomimetic Membranes

Abdelrasoul¹,

Doan²,

Lohi³

2017

Biomimetic and Bioinspired Membranes for New Frontiers in Sustainable Water Treatment Technology

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Influence of polydopamine deposition conditions on pure water flux and foulant adhesion resistance of reverse osmosis, ultrafiltration, and microfiltration membranes

Cited by 348 publications

References 33 publications

Short Communication: Requiring Reverse Osmosis Membranes Modifications – An Overview

Short Communication: Requiring Reverse Osmosis Membranes Modifications – An Overview

Remarkable Anti-Fouling Performance of TiO2-Modified TFC Membranes with Mussel-Inspired Polydopamine Binding

Challenges and Opportunities for Biomimetic Membranes

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