Review on methodology for determining forward osmosis (FO) membrane characteristics: Water permeability (A), solute permeability (B), and structural parameter (S)

Kim, Bongchul; Gwak, Gimun; Hong, Seungkwan

doi:10.1016/j.desal.2017.08.006

Cited by 143 publications

(72 citation statements)

References 88 publications

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“…This hydrated radius dependent rejection behavior suggests that steric hindrance played an important role. The hydrated radius of NO 3 − is 0.340 nm, 21 which is close to those of NH 4 + and K + , however, the rejection of NO 3 − is significantly higher than that of NH 4 + and K + . This may be because the membrane surface charge was negative when NH 4 + , K + or NO 3 − was used as the FS (Fig.…”

Section: Rejection Of the Tested Solutes At Different Concentrationsmentioning

confidence: 60%

“…The rejections of NH 4 + and K + with smaller hydrated radius were lower than those of Ca 2+ and Mg 2+ with larger hydrated radius. The rejection of NO 3 − was significantly higher than NH 4 + and K + although they had similar hydrated radius. The rejections of the organic solutes followed the following order: lactic acid<glucose<SDS ≈ SDBS.…”

Section: Discussionmentioning

confidence: 86%

“…With the increase in FS concentration, the FS osmotic pressure increased, and in turn the transmembrane osmotic pressure difference decreased, which could be the reason behind the decrease in water fluxes. 32 3 and Na 2 SO 4 were increased from C1 levels to C2 and C3 levels, the water fluxes decreased by 3.5-4.9% and 28.6-31.7%, respectively. When increasing the concentration of KH 2 PO 4 from C1 level to C2 and C3 levels, the water flux reductions were 6.3% and 34.0%, respectively, which were slightly higher than those of the former six inorganic solutes.…”

Section: Characteristics Of the Fo Membrane And The Fsmentioning

confidence: 92%

“…Forward osmosis (FO) is recognized as an emerging membrane separation technology which has the advantages of low energy consumption and high rejection of a broad range of pollutants. [1][2][3] FO uses the osmotic pressure gradient as the driving force for the www.soci.org C Wang, Y Li transport of water across the semi-permeable membrane from a relatively low concentration feed solution (FS) to a concentrated draw solution (DS) and consequently resulting in concentration of the FS and dilution of the DS. 4,5 A good FO membrane should have excellent water flux, high salt rejection and superb membrane stability simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Permeation of greywater constituents in an aquaporin based biomimetic forward osmosis membrane process: experimental performance and modeling

2019

J of Chemical Tech & Biotech

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BACKGROUND An aquaporin based biomimetic forward osmosis (FO) membrane was tested with 11 greywater constituents to evaluate the membrane performance. The effects of solute type and concentration on water flux and rejection were investigated. A model was developed to predict the rejection of greywater constituents in the FO process. RESULTS The aquaporin based biomimetic membrane (ABBM) presented high water flux (16.1–17.4 L m‐2 h−1) for greywater. Inorganic ions had little effect on permeability of the ABBM. For the tested organic solutes, while lactic acid, glucose and sodium dodecyl benzene sulfonate showed a positive impact on permeability of the ABBM, sodium dodecyl sulfate had a negative effect. After the tests of 11 selected constituents in greywater, the ABBM showed good chemical stability. Steric hindrance and electrostatic interaction both governed the diffusion of feed solutes through the ABBM. The mathematical model developed in this study accurately predicted the solute with small permeability coefficient (Bp value <3 L m‐2 h−1) transport through the ABBM. And it was suitable for predicting the rejections of target solutes at low FS concentration (≤ 6 mmol L–1). CONCLUSION This study demonstrated that the ABBM could be used in greywater treatment and the developed model could contribute to greywater reuse. © 2019 Society of Chemical Industry

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Section: Rejection Of the Tested Solutes At Different Concentrationsmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 86%

Section: Characteristics Of the Fo Membrane And The Fsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Permeation of greywater constituents in an aquaporin based biomimetic forward osmosis membrane process: experimental performance and modeling

2019

J of Chemical Tech & Biotech

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“…The first discovered two-stage PRO-FO method was proposed by Kim et al [16], yet was not experimentally demonstrated. Their theory seems reliable as both transport parameters and structural parameters were separately determined based on its corresponding layer.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the intrinsic parameters (A, B, and S) of a forward osmosis membrane using pressurized and non-pressurized methods

Aziz

Rahman

Nizam

et al. 2018

Desalination and Water Treatment

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Thin‐film composite forward osmosis membrane prepared from polyvinyl chloride/cellulose carbamate substrate and its potential application in brackish water desalination

Zheng

Zhou

Cheng

et al. 2020

J of Applied Polymer Sci

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Synthesized by the reaction between α-cellulose and m-tolyl isocyanate (MTI), cellulose carbamate (CC) was blended with polyvinyl chloride (PVC) to fabricate substrates for thin-film composite (TFC) forward osmosis (FO) membranes. The introduction of CC into substrates improved both membrane structure and performance. The substrates exhibited higher porosity and hydrophilicity, and better connective pore structure; while rejection layer exhibited better morphology but limited cross-linked degree decrease after the introduction of CC. According to the results, the CC blend ratio of 10% was the optimal ratio. With this blend ratio, the TFC-10 membrane presented favorable water permeability (1.86 LMH/bar) and structure parameter (337 μm), which resulted in excellent FO performance (water flux with a value of 40.40 LMH and specific salt flux with a value of 0.099 g/L under rejection layer faces draw solution [DS] mode when 1 M NaCl and deionized water were utilized as DS and feed solution). In addition, the TFC-10 membrane showed good water flux and low-sulfate ion leakage in the potential application of brackish water desalination.

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Review on methodology for determining forward osmosis (FO) membrane characteristics: Water permeability (A), solute permeability (B), and structural parameter (S)

Cited by 143 publications

References 88 publications

Permeation of greywater constituents in an aquaporin based biomimetic forward osmosis membrane process: experimental performance and modeling

Permeation of greywater constituents in an aquaporin based biomimetic forward osmosis membrane process: experimental performance and modeling

Comparison of the intrinsic parameters (A, B, and S) of a forward osmosis membrane using pressurized and non-pressurized methods

Thin‐film composite forward osmosis membrane prepared from polyvinyl chloride/cellulose carbamate substrate and its potential application in brackish water desalination

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