Forward Osmosis Process: State-Of-The-Art of Membranes

Ndiaye, Issa; Vaudreuil, Sébastien; Bounahmidi, Tijani

doi:10.1080/15422119.2019.1622133

Cited by 26 publications

(11 citation statements)

References 121 publications

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“…Non‐solvent‐induced phase separation (NIPS), also known as immersion precipitation, is the most used technique to prepare FO membranes. [ 13 ] With NIPS, the polymer solution is first spread on suitable support before immersing the whole setup in a non‐solvent. The resulting solvent – non‐solvent exchange leads to membrane formation (Figure 2A).…”

Section: Database and Comparison Criteria Of The Manufacturing Techniquesmentioning

confidence: 99%

“…A commonly used approach to determine the FO membrane parameters is based on both RO and FO tests. [ 40,41 ] While RO test establishes the water permeability coefficient “A” and solute permeability coefficient “B” of the membranes, the FO test serves to characterize the membrane's structural parameter “S.” [ 13 ]…”

Section: Database and Comparison Criteria Of The Manufacturing Techniquesmentioning

confidence: 99%

“…The support layer (SL) is also responsible for the internal concentration polarization (ICP) which is considered as the main cause of water flux decline. [ 13,39,55,56 ] ICP, as characterized through the S parameter, is caused by dilution of the DS. [ 13,47 ] This results in a decreased osmotic pressure of the DS near the AL‐SL interface.…”

Section: Database and Comparison Criteria Of The Manufacturing Techniquesmentioning

confidence: 99%

“…FO membranes can be classified into three main categories by their manufacturing processes: phase inversion (PI)‐formed asymmetric membranes, [ 9,10 ] layer‐by‐layer (LbL) membranes, [ 11,12 ] and thin‐film composite membranes (TFC). [ 13–15 ] TFC membranes are considered as the most suitable in desalination applications. A TFC membrane consists of at least two layers prepared via two distinct techniques (Figure 1): a support layer and an active layer.…”

Section: Introductionmentioning

confidence: 99%

“…These PA‐TFC membranes have good stability over a wide range of temperatures and pH. [ 13 ] Since the active and support layers are prepared using two distinct processes, the properties of each layer can be optimized individually. [ 17,20–22 ] Researchers are increasingly interested nowadays in preparing TFC membranes with integrated sublayers between the substrate and their active layer, using various techniques.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Selection of substrate manufacturing techniques of polyamine‐based thin‐film composite membranes for forward osmosis process

Ndiaye

Chaoui

Vaudreuil

et al. 2021

Polymer Engineering & Sci

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This paper is a comparative study on the preparation techniques used to make the support layer of polyamide‐thin‐film composite forward osmosis (TFC‐FO) membranes. The role played by the support layer preparation technique in membrane performance is thoroughly investigated in this study. Electrospinning is shown to produce membranes of lower structural parameter compared to those obtained by conventional phase inversion techniques. The electrospun polyamide selective layer can also be tailored with the required properties. This makes electrospinning a promising process to design efficient FO membrane substrates. It is shown in this work that the FO water flux is more dependent on the internal structure of the support layer than the preparation materials. The main challenge remaining for substrates to operate in FO is to achieve simultaneously a low structural parameter, a high surface porosity, and the required mechanical properties. As most of today's approaches are not suitable, further materials development is essential in future investigations on TFC‐FO membranes.

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Section: Database and Comparison Criteria Of The Manufacturing Techniquesmentioning

confidence: 99%

Section: Database and Comparison Criteria Of The Manufacturing Techniquesmentioning

confidence: 99%

Section: Database and Comparison Criteria Of The Manufacturing Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Selection of substrate manufacturing techniques of polyamine‐based thin‐film composite membranes for forward osmosis process

Ndiaye

Chaoui

Vaudreuil

et al. 2021

Polymer Engineering & Sci

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Enhanced forward osmosis desalination of brackish water using phase‐separating ternary organic draw solutions of hydroxypropyl cellulose and propylene glycol propyl ether

Ruzvidzo,

Kaur,

Jain

2024

Water Environment Research

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This study introduces draw solutions for application in forward osmosis (FO) processes, combining mono propylene glycol propyl ether (PGPE) with the cellulose derivative hydroxypropyl cellulose (HPC). A total of 16 unique single‐solute and ternary organic draw solutions were prepared and evaluated, leading to the selection of three promising solutions for further investigation. Notably, eight of the initial organic draw solutions demonstrated osmotic pressures exceeding 2.4 MPa. The dynamic viscosities of all draw solutions exhibited a significant reduction with increasing temperature. Among the investigated solutions, the 0.25HPC‐3.75PGPE demonstrated the most favorable FO performance, achieving average experimental water fluxes of 11.062 and 9.852 Lm−2 h−1 (LMH) against a 1 g/L NaCl brackish feed solution across two FO runs.Practitioner Points Hydroxypropyl cellulose (HPC, MW ~100,000) was mixed with propylene glycol propyl ether (PGPE) as draw solutes for FO processes. Seven combinations of HPC and PGPE produced osmolalities greater than 1000 mOsm/kg. 0.5HPC‐7.5PGPE ternary draw solution achieved experimental water fluxes of 11.062 and 9.852 LMH against 1 g/L NaCl brackish feed solution. Leveraging the LCSTs of these ternary organic solutions holds promise for improved separation and regeneration processes.

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Hybrid Membrane-Thermal Seawater Desalination Engineering: Typical Technology Development and Future Prospects

Ren²,

Xie³

et al. 2022

Sustainable Development of Water and Environment

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Forward Osmosis Process: State-Of-The-Art of Membranes

Cited by 26 publications

References 121 publications

Selection of substrate manufacturing techniques of polyamine‐based thin‐film composite membranes for forward osmosis process

Selection of substrate manufacturing techniques of polyamine‐based thin‐film composite membranes for forward osmosis process

Enhanced forward osmosis desalination of brackish water using phase‐separating ternary organic draw solutions of hydroxypropyl cellulose and propylene glycol propyl ether

Hybrid Membrane-Thermal Seawater Desalination Engineering: Typical Technology Development and Future Prospects

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