Preparation of composite hollow fiber membranes: co-extrusion of hydrophilic coatings onto porous hydrophobic support structures

He, Tianhu; Mulder, M.H.V.; Strathmann, H.; Weßling, Matthias

doi:10.1016/s0376-7388(02)00118-7

Cited by 116 publications

(63 citation statements)

References 22 publications

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“…Recent development of the co-casting technique, which was first introduced by He et al, [19], can potentially be another pathway to prepare a mechanically strong support layer but with a low S value. Co-casting involves the simultaneous casting of two layers of different polymer solutions [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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A sacrificial-layer approach to fabricate polysulfone support for forward osmosis thin-film composite membranes with reduced internal concentration polarisation

Xiao

Nghiem

Yin

et al. 2015

Journal of Membrane Science

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He, T. (2015). A sacrificial-layer approach to fabricate polysulfone support for forward osmosis thin-film composite membranes with reduced internal concentration polarisation. Journal of Membrane Science, 481 106-114.A sacrificial-layer approach to fabricate polysulfone support for forward osmosis thin-film composite membranes with reduced internal concentration polarisation AbstractThis study demonstrates a sacrificial-layer approach by co-casting, which is the simultaneous casting of two layers, to prepare a polysulfone support (denoted as PSfco) layer with open bottom surface morphology for fabricating thin-film composite forward osmosis (FO) membranes. In the co-casting process, polyetherimide (PEI), used as the sacrificial layer, was co-cast beneath the PSf layer. After the PEI layer was peeled off, PSfco was yielded with an open-bottom structure. Results showed that under the same operating condition, the FO membrane prepared by co-casting (denoted as PSfco-TFC) demonstrated a 10% higher water flux using 0.5 M NaCl draw solution and 30% higher water flux using 4 M NaCl draw solution in the AL-FS mode in comparison to membranes prepared in a single layer casting technique (denoted as PSfs-TFC). The PSfco-TFC exhibits a lower average structural parameter (S, 167 μm) than that of the PSfs-TFC (241 μm), while the water and salt permeability coefficients of both membranes are similar. Results reported here demonstrate that the co-casting technique can be used to fabricate FO membranes with significantly improved performance compared to the conventional approach. Results showed that under the same operating condition, the FO membrane prepared by cocasting (denoted as PSf co -TFC) demonstrated a 10% higher water flux using 0.5 M NaCl draw solution and 30% higher water flux using 4 M NaCl draw solution in the AL-FS mode in comparison to membranes prepared in a single layer casting technique (denoted as PSf s -TFC).The PSf co -TFC exhibits a lower average structural parameter (S, 167 microns) than that of the PSf s -TFC (241 microns), while the water and salt permeability coefficients of both membranes are similar. Results reported here demonstrate that the co-casting technique can be used to fabricate FO membranes with significantly improved performance compared to the conventional approach.

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Section: Introductionmentioning

confidence: 99%

“…Co-casting involves the simultaneous casting of two layers of different polymer solutions [19][20][21]. In a recent study, Liu and Ng [22] reported a co-casting technique to prepare a double PSf support layer.…”

Section: Introductionmentioning

confidence: 99%

A sacrificial-layer approach to fabricate polysulfone support for forward osmosis thin-film composite membranes with reduced internal concentration polarisation

Xiao

Nghiem

Yin

et al. 2015

Journal of Membrane Science

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“…The skin layer of TFC membrane is looser than that of reverse osmosis membrane, but denser than ultrafiltration membrane due to various preparing techniques. Currently, there are several methods to prepare TFC membranes like phase transformation, surface grafting, and interfacial polymerization [3][4][5][6]. Among these methods, interfacial polymerization is a common and effective approach to prepare TFC membrane, which is the maximum yield among commercial products currently.…”

Section: Introductionmentioning

confidence: 99%

Preparation of thin-film composite nanofiltration membranes with improved antifouling property and flux using 2,2′-oxybis-ethylamine

et al. 2015

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“…In this work, as described by He et al [30], a triple orifice spinneret was used. Moreover, simultaneous spinning, followed by drying and sintering, has many complications.…”

Section: Novel Wet-spinning Methodsmentioning

confidence: 99%

Recent Progresses in Ceramic Hollow‐Fiber Membranes

Dashti

Asghari

2015

ChemBioEng Reviews

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Membrane technology is one of the most important aspects in separation processes. Hollow fibers are one of the emerging technologies that had a new growth spurt during the past decades. Ceramic membranes have outstanding stability at high temperatures (> 100°C), at extreme pH, and in fouling environments. In this article, recent progresses on ceramic hollow-fiber membranes are discussed. The characterizations of membranes, particularly by different methods, are reported. New ceramics, especially perovskites and composites of ceramics, and new techniques are introduced in making high performance hollow fibers. New applications of ceramic hollow fibers are also discussed in detail.

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Preparation of composite hollow fiber membranes: co-extrusion of hydrophilic coatings onto porous hydrophobic support structures

Cited by 116 publications

References 22 publications

A sacrificial-layer approach to fabricate polysulfone support for forward osmosis thin-film composite membranes with reduced internal concentration polarisation

A sacrificial-layer approach to fabricate polysulfone support for forward osmosis thin-film composite membranes with reduced internal concentration polarisation

Preparation of thin-film composite nanofiltration membranes with improved antifouling property and flux using 2,2′-oxybis-ethylamine

Recent Progresses in Ceramic Hollow‐Fiber Membranes

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