Nanofiltration of NaCl solutions using a SPPO membrane (BQ01) Part 1. Membrane characterization and separation mechanisms

Noël, Isabelle M.; Lebrun, Rémi E.; Bouchard, Christian

doi:10.1016/s0011-9164(03)00301-1

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Based on a literature review, it was found that supported membranes based on pristine (unfunctionalized) PPO have not been yet studied for NF. Its derivatives (for example, brominated and sulfonated PPO) were mainly used for NF of different electrolytes [ 22 , 23 , 24 , 25 , 26 ]. Only membranes from brominated PPO (BPPO) were developed for OSN (namely, for the rejection of dyes such as Bengal rose, Safranine T, Alizarin yellow GG, Eriochome black T, Crystal violet, Bromophenol blue, and Coomassie brilliant blue R250) [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Modification Approaches of Polyphenylene Oxide Membranes to Enhance Nanofiltration Performance

Dmitrenko,

Sushkova,

Chepeleva

et al. 2023

Membranes

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Presently, water pollution poses a serious threat to the environment; the removal of organic pollutants from resources, especially dyes, is very important. Nanofiltration (NF) is a promising membrane method to carry out this task. In the present work, advanced supported poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) membranes were developed for NF of anionic dyes using bulk (the introduction of graphene oxide (GO) into the polymer matrix) and surface (the deposition of polyelectrolyte (PEL) layers by layer-by-layer (LbL) technique) modifications. The effect of PEL combinations (polydiallyldimethylammonium chloride/polyacrylic acid (PAA), polyethyleneimine (PEI)/PAA, and polyallylamine hydrochloride/PAA) and the number of PEL bilayers deposited by LbL method on properties of PPO-based membranes were studied by scanning electron microscopy (SEM), atomic force microscopy (AFM), and contact angle measurements. Membranes were evaluated in NF of food dye solutions in ethanol (Sunset yellow (SY), Congo red (CR), and Alphazurine (AZ)). The supported PPO membrane, modified with 0.7 wt.% GO and three PEI/PAA bilayers, exhibited optimal transport characteristics: ethanol, SY, CR, and AZ solutions permeability of 0.58, 0.57, 0.50, and 0.44 kg/(m2h atm), respectively, with a high level of rejection coefficients—58% for SY, 63% for CR, and 58% for AZ. It was shown that the combined use of bulk and surface modifications significantly improved the characteristics of the PPO membrane in NF of dyes.

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Section: Introductionmentioning

confidence: 99%

Modification Approaches of Polyphenylene Oxide Membranes to Enhance Nanofiltration Performance

Dmitrenko,

Sushkova,

Chepeleva

et al. 2023

Membranes

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show abstract

“…In the case of uncharged molecules, mainly size exclusion is thought to be responsible for the separation, whereas concerning the separation of charged species, e.g., ions, both size and charge effects may play a role [3,6,7]. The charge effects that partly cause the rejection of ions result from interactions between the charged particles and the charged membrane.…”

Section: Introductionmentioning

confidence: 99%

Membrane potential model for an asymmetrical nanofiltration membrane — consideration of noncontinuous concentration at the interface

Wang

2005

Desalination

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Characterization and retention of UF membranes using PEG, HS and polyelectrolytes

Hilal¹,

Al‐Abri²,

Al-Hinai³

2007

Desalination

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Nanofiltration of NaCl solutions using a SPPO membrane (BQ01) Part 1. Membrane characterization and separation mechanisms

Cited by 5 publications

References 18 publications

Modification Approaches of Polyphenylene Oxide Membranes to Enhance Nanofiltration Performance

Modification Approaches of Polyphenylene Oxide Membranes to Enhance Nanofiltration Performance

Membrane potential model for an asymmetrical nanofiltration membrane — consideration of noncontinuous concentration at the interface

Characterization and retention of UF membranes using PEG, HS and polyelectrolytes

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