Cellulose acetate nanofiltration hollow fiber membranes for forward osmosis processes

Su, Juing‐Huei; Yang, Qian; Teo, Nicholas; Chung, Tai‐Shung

doi:10.1016/j.memsci.2010.03.003

Cited by 271 publications

(151 citation statements)

References 57 publications

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“…In an earlier study (Tahir et al 2013), HFFO membrane was also evaluated under the same conditions for different fertilizer DS and compared with HTI's CTA membrane outcome. It was seen that although in this study, HFFO gave better results but not as par with other published work showed with HFFO membranes [18,40,42,56].…”

Section: Introductioncontrasting

confidence: 63%

“…FO performance was evaluated for new kinds of FO membranes as hollow fiber FO (HFFO) membrane [36], polybenzimidazole (PBI) nanofiltration membrane [37], crosslinked layer-by-layer (xLbL) FO membrane [29], layerby-layer polyelectrolyte applied on a PES hollow fiber substrate [38], high flux FO membranes by chemically crosslinked layer-by-layer polyelectrolytes [39], novel poly (amide-imide) FO hollow fiber membranes with a positively charged selective layer [28], TFC FO membrane for PRO [40], FO membrane with sulfonated polyphenylenesulfone (sPPSU) as the supporting substrate [41], Cellulose acetate nanofiltration hollow fiber membranes for FO [42] cellulose acetate membranes for forward osmosis with an ultra-thin selective layer [43] and others [33,[44][45][46]. Some other unique and distinctive polifilration membranes, carbon nano tubes [47], aquaporin membranes [48] are also used for forward osmosis applications.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the process parameters on hollow fiber-forward osmosis membrane performances

Majeed

Phuntsho

Sahebi

et al. 2015

Desalination and Water Treatment

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Continued efforts are made in improving the performance of the low-cost forward osmosis (FO) membrane process which utilizes naturally available osmotic pressure of the draw solution (DS) as the driving force. Selection of a suitable DS and development of a better performing membrane remained the main research focus. In this study, the performance of a hollow fiber forward osmosis (HFFO) membrane was evaluated with respect to various operating conditions such as different cross-flow directions, membrane orientation, solution properties, and solution flow rates (Reynolds number). The study observed that operating parameters significantly affect the performance of the FO process. FO comparatively showed better performance at counter-current orientation. NaCl, KCl, and NH 4 Cl were evaluated as DS carrying common anion. Properties of the anionic part of the DS were found important for flux outcome, whereas reverse solute flux (RSF) was largely influenced by the properties of DS cationic part. FO was operated at different DS and feed solution (FS) flow rates and FO outcome was assessed for varying DS and FS Reynolds number ratio. FO showed better flux outcome as Re ratio for DS and FS decreases and vice versa. Results indicated that by adjusting FO processes conditions, HFFO membrane could achieve significantly lower specific RSF and higher water flux outcome. It was observed that using 2 M NaCl as DS and deionized water as FS, HFFO successfully delivered flux of 62.9 LMH which is significantly high compared to many FO membranes reported in the literature under the active layer-DS membrane orientation mode.

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Section: Introductioncontrasting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Influence of the process parameters on hollow fiber-forward osmosis membrane performances

Majeed

Phuntsho

Sahebi

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

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“…However, the detrimental effect is that high temperature results in lower water permeability. This phenomenon is consistent with the results reported by Su et al (2010a). Fig.…”

Section: Effect Of the Coagulation Processsupporting

confidence: 94%

Fabrication and performance of PET mesh enhanced cellulose acetate membranes for forward osmosis

Wang

Hou

et al. 2016

Journal of Environmental Sciences

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“…These methods utilize osmotic pressure difference between a dilute feed solution and a concentrated draw solution to induce mass transport of water through semipermeable membranes from the feed stream into the draw solution. Increasing demand for water and electricity, combined with encouraging results from ODMP studies in recent years, have accelerated the development of ODMP technologies, including a flurry of membrane development work [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] intended to enable further improvement and commercialization of ODMPs.…”

Section: Introductionmentioning

confidence: 99%

Standard Methodology for Evaluating Membrane Performance in Osmotically Driven Membrane Processes

et al. 2013

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Osmotically driven membrane processes (ODMPs) such as forward osmosis (FO) and pressure retarded osmosis (PRO) are extensively investigated for utilization in a broad range of applications. In ODMPs, the operating conditions and membrane properties play more critical roles in mass transport and process performance than in pressure-driven membrane processes. Search of the literature reveals that ODMP membranes, especially newly developed ones, are tested under different temperatures, draw solution compositions and concentrations, flow rates, and pressures. In order to compare different membranes, it is important to develop standard protocols for testing of membranes for ODMPs. In this article we present a standard methodology for testing of ODMP membranes based on experience gained and operating conditions used in FO and PRO studies in recent years. A round-robin testing of two commercial membranes in seven independent laboratories revealed that water flux and membrane permeability coefficients were similar when participants performed the experiments and calculations using the same protocols. The thin film composite polyamide membrane exhibited higher water and salt permeability than the asymmetric cellulosebased membrane, but results with the high permeability thin-film composite membrane were more scattered. While salt rejection results in RO mode were relatively similar, salt permeability coefficients for both membranes in FO mode were more varied. Results suggest that high permeability ODMP membranes should be tested at lower hydraulic pressure in RO mode and that RO testing be conducted with the same membrane sample used for testing in FO mode. AbstractOsmotically driven membrane processes (ODMP) such as forward osmosis (FO) and pressure retarded osmosis (PRO) are extensively investigated for utilization in a broad range of applications. In ODMPs, the operating conditions and membrane properties play more critical roles in mass transport and process performance than in pressure-driven membrane processes.Search of the literature reveals that ODMP membranes, especially newly developed ones, are tested under different temperatures, draw solution compositions and concentrations, flowrates, and pressures. In order to compare different membranes, it is important to develop standard protocols for testing of membranes for ODMP. In this article we present a standard methodology for testing of ODMP membranes based on experience gained and operating conditions used in FO and PRO studies in recent years. A round-robin testing of two commercial membranes in seven independent laboratories revealed that water flux and membrane permeability coefficients were similar when participants performed the experiments and calculations using the same protocols. The thin film composite polyamide membrane exhibited higher water and salt permeability than the asymmetric cellulose-based membrane, but results with the high permeability thin-film composite membrane were more scattered. While salt rejection results in RO mode were...

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Cellulose acetate nanofiltration hollow fiber membranes for forward osmosis processes

Cited by 271 publications

References 57 publications

Influence of the process parameters on hollow fiber-forward osmosis membrane performances

Influence of the process parameters on hollow fiber-forward osmosis membrane performances

Fabrication and performance of PET mesh enhanced cellulose acetate membranes for forward osmosis

Standard Methodology for Evaluating Membrane Performance in Osmotically Driven Membrane Processes

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