Thin‐Film Composite Forward‐Osmosis Membranes Reinforced on Woven Mesh and Nonwoven Backing Fabric Supports

Sheikhi, Mohammad Hossein; Mirshekar, Leila; Kamarehie, Bahram; Ghaderpoori, Mansour; Ramavandi, Bahman; Amini, Fahim; Fadaie, Nasim; Sahebi, Soleyman

doi:10.1002/ceat.202000026

Cited by 6 publications

(2 citation statements)

References 39 publications

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“…Membranes made from woven fabrics had better mechanical properties, whereas higher pores were observed in membranes manufactured on nonwovens. In addition, nonwoven substrates exhibited better performance in terms of water flux because their structure was thinner and more porous [45]. Moreover, a polyamide (PA) thin film layer is created by the interfacial polymerization (IP) reaction between aromatic amine monomers, such as m-phenylenediamine (MPD), and aromatic acyl chloride monomer, such as trimesoyl chloride (TMC), over the top of the porous substrates [46].…”

Section: Role Of Active Layer and Substrate On Fo Performancementioning

confidence: 99%

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

et al. 2023

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Forward osmosis (FO) is a low-energy treatment process driven by osmosis to induce the separation of water from dissolved solutes/foulants through the membrane in hydraulic pressure absence while retaining all of these materials on the other side. All these advantages make it an alternative process to reduce the disadvantages of traditional desalination processes. However, several critical fundamentals still require more attention for understanding them, most notably the synthesis of novel membranes that offer a support layer with high flux and an active layer with high water permeability and solute rejection from both solutions at the same time, and a novel draw solution which provides low solute flux, high water flux, and easy regeneration. This work reviews the fundamentals controlling the FO process performance such as the role of the active layer and substrate and advances in the modification of FO membranes utilizing nanomaterials. Then, other aspects that affect the performance of FO are further summarized, including types of draw solutions and the role of operating conditions. Finally, challenges associated with the FO process, such as concentration polarization (CP), membrane fouling, and reverse solute diffusion (RSD) were analyzed by defining their causes and how to mitigate them. Moreover, factors affecting the energy consumption of the FO system were discussed and compared with reverse osmosis (RO). This review will provide in-depth details about FO technology, the issues it faces, and potential solutions to those issues to help the scientific researcher facilitate a full understanding of FO technology.

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Section: Role Of Active Layer and Substrate On Fo Performancementioning

confidence: 99%

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

et al. 2023

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“…However, due to chemical modification to induce hydrophilicity, membrane tensile strength was substantially decreased. Without backing fabric support, these substrates demonstrated low tensile strength and were not considered fit for commercial production [8,24]. Therefore, there is a need to develop a TFC FO membrane to have both ideal properties of mechanical strength and hydrophilicity for a higher performance.…”

Section: Introductionmentioning

confidence: 99%

Developing a Thin Film Composite Membrane with Hydrophilic Sulfonated Substrate on Nonwoven Backing Fabric Support for Forward Osmosis

et al. 2021

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This study describes the fabrication of sulfonated polyethersulfone (SPES) as a super-hydrophilic substrate for developing a composite forward osmosis (FO) membrane on a nonwoven backing fabric support. SPES was prepared through an indirect sulfonation procedure and then blended with PES at a certain ratio. Applying SPES as the substrate affected membrane properties, such as porosity, total thickness, morphology, and hydrophilicity. The PES-based FO membrane with a finger-like structure had lower performance in comparison with the SPES based FO membrane having a sponge-like structure. The finger-like morphology changed to a sponge-like morphology with the increase in the SPES concentration. The FO membrane based on a more hydrophilic substrate via sulfonation had a sponge morphology and showed better water flux results. Water flux of 26.1 L m−2 h−1 and specific reverse solute flux of 0.66 g L−1 were attained at a SPES blend ratio of 50 wt.% when 3 M NaCl was used as the draw solution and DI water as feed solution under the FO mode. This work offers significant insights into understanding the factors affecting FO membrane performance, such as porosity and functionality.

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Gas transport characteristics of mixed matrix membrane containing MIL-100 (Fe) metal-organic frameworks and PEBAX precursors

Pirouzfar

Roustaie

2023

Korean J. Chem. Eng.

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In this research, the effect of adding MIL-100 (Fe) MOFs on the PEBAX membranes has been scrutinized in two grades of 1657 and 2533. Initially, the intended membranes were synthesized by the solutioncasting method. Then, the XRD and SEM were applied to deliberate the in uence of adding to the structure of both types of membranes. In consequence, the separation function of the pair gases of CO 2 /CH 4 CO 2 /N 2 and CO 2 /O 2 and their permeability were considered at the pressure of 3.5 bar and temperature of 25°C. Eventually, their function was compared by Robeson diagrams of 1991 and 2008. The comparison results by Robeson diagrams indicated that the PEBAX1657/MIL-100 (Fe) and PEBAX2533/MIL-100 (Fe) membranes containing 5 wt.% of MOF represent more suitable performance in separating CO 2 /CH 4 in comparison with the axis of the Robeson diagram. However, their function for separating the aforementioned gases requires more modi cations.

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Thin‐Film Composite Forward‐Osmosis Membranes Reinforced on Woven Mesh and Nonwoven Backing Fabric Supports

Cited by 6 publications

References 39 publications

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

Forward Osmosis Membrane: Review of Fabrication, Modification, Challenges and Potential

Developing a Thin Film Composite Membrane with Hydrophilic Sulfonated Substrate on Nonwoven Backing Fabric Support for Forward Osmosis

Gas transport characteristics of mixed matrix membrane containing MIL-100 (Fe) metal-organic frameworks and PEBAX precursors

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