High performance flat sheet forward osmosis membrane with an NF-like selective layer on a woven fabric embedded substrate

Qiu, Changquan; Setiawan, Laurentia; Wang, Rong; Tang, Chuyang Y.; Fane, Anthony G.

doi:10.1016/j.desal.2011.06.047

Cited by 93 publications

(67 citation statements)

References 14 publications

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“…By embedding the PAI membrane on a woven fabric, the thickness of the substrate was reduced to 55 lm and the mechanical strength of the membrane was enhanced. [129]. In addition to the above FO membrane fabrication methods, novel FO membranes using the layer-by-layer (LbL) assembly method were first synthesized and characterized by Saren et al [14].…”

Section: Membrane Advancementmentioning

confidence: 99%

Recent advancements in forward osmosis desalination: A review

Akther¹,

Sodiq²,

Giwa³

et al. 2015

Chemical Engineering Journal

395

203

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Section: Membrane Advancementmentioning

confidence: 99%

Recent advancements in forward osmosis desalination: A review

Akther¹,

Sodiq²,

Giwa³

et al. 2015

Chemical Engineering Journal

395

203

View full text Add to dashboard Cite

“…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%

“…As a result, the reported water and salt fluxes are scattered over a broad range. Testing conditions reported in recent publications on FO membrane development [7,8,12,13,15,[17][18][19][23][24][25][26][27][28][29] are summarized in Table 1. It can be seen from the data that both temperatures and draw solution concentrations are not consistent, and therefore, make membrane performance difficult to compare.…”

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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“…For FO, the main direction of current research is towards improving intrinsic and transport properties of membranes on a molecular level [20][21][22][23][24][25][26][27][28]. However, the effects of these improvements on the energy efficiency of different FO desalination processes remain unexplored.…”

Section: Introductionmentioning

confidence: 99%