Poly(vinyl) alcohol coating of the support layer of reverse osmosis membranes to enhance performance in forward osmosis

Saraf, Aditi; Johnson, Kaitlin; Lind, Mary Laura

doi:10.1016/j.desal.2013.11.024

Cited by 29 publications

(18 citation statements)

References 24 publications

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“…Regarding the subsequent PVA solution, its theoretical concentration of the crosslinking agent was estimated through eq. , in terms of the molar ratio of the crosslinking agent to PVA

X_{GA} = \frac{W_{GA} \cdot M_{PVA} \cdot 2}{W_{PVA} \cdot M_{GA}} \cdot 100

…”

Section: Methodsmentioning

confidence: 95%

Immobilization of bacteriocin nisin into a poly(vinyl alcohol) polymer matrix crosslinked with nontoxic dicarboxylic acid

Hrabalíková

Holčapková

Šuly

et al. 2016

J of Applied Polymer Sci

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This work is focused on novel methodology of poly(vinyl alcohol) crosslinking by non-toxic dicarboxylic acid, glutaric acid. The cross-linked system was used as a matrix for immobilization of bacteriocin nisin. Effect of the crosslinking degree on physico-chemical, morphology, mechanical, and thermal properties of poly(vinyl alcohol) films were investigated by using swelling test, Fourier transform infrared spectroscopy, scanning electron microscopy, stress-strain analysis, differential scanning calorimetry, and thermogravimetry. Release profile of the nisin from the cross-linked poly(vinyl alcohol) was studied by high performance liquid chromatography. Antibacterial activity of the prepared systems was tested by agar diffusion test and dilution and spread plate technique. Results showed suitability of glutaric acid as effective crosslinking agent of poly(vinyl alcohol) that acts synergistically with bacteriocin nisin against the tested Gram-positive and Gram-negative bacterial strains. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43674.

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“…Regarding the subsequent PVA solution, its theoretical concentration of the crosslinking agent was estimated through eq. , in terms of the molar ratio of the crosslinking agent to PVA

X_{GA} = \frac{W_{GA} \cdot M_{PVA} \cdot 2}{W_{PVA} \cdot M_{GA}} \cdot 100

…”

Section: Methodsmentioning

confidence: 95%

Immobilization of bacteriocin nisin into a poly(vinyl alcohol) polymer matrix crosslinked with nontoxic dicarboxylic acid

Hrabalíková

Holčapková

Šuly

et al. 2016

J of Applied Polymer Sci

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“…The aim of using this modifier was to obtain highly hydrophilic substrate leading to higher water permeation and salt separation. Saraf et al [131] Evidently, the reverse salt flux was very low because of pore clogging.…”

Section: Chemical Cross-linking Treatmentmentioning

confidence: 98%

Advances in forward osmosis membranes: Altering the sub-layer structure via recent fabrication and chemical modification approaches

et al. 2018

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The forward osmosis process has obtained renewed interest nowadays and it might become an alternative solution for many industrial applications to meet the current and future requirements for potable water. The FO process depends on the osmotic pressure gradient between a high salinity draw solute and low salinity feed solution across a semi-permeable membrane to extract pure water. Despite the potential advantages of FO, there are some technical drawbacks that hinder FO application for water desalination. One of the most significant critical challenges is the need for membrane compatible with the FO process. To improve FO desalination feasibility, membrane development is required to obtain maximum water permeability and minimum Highlights  Comprehensive overview of commercial FO membranes and modified FO sub-layers.  Discussion of fundamental and practical challenges of FO membrane performance.  Chemical modification strategies to minimize the structural parameter of FO sub-layer.

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“…Recent studies have also focused on chemical modification of RO membranes that generally tend to exhibit very poor FO performance due to severe ICP effects caused by their highly hydrophobic support layers [166,168]. Imparting hydrophilicity by coating the polysulfone support layer with polydopamine (PDA) or poly(vinyl) alcohol (PVA) has been shown to enhance the FO water flux of seawater RO membranes [166,168].…”

Section: Chemically Modified Fo Membranesmentioning

confidence: 99%

“…Imparting hydrophilicity by coating the polysulfone support layer with polydopamine (PDA) or poly(vinyl) alcohol (PVA) has been shown to enhance the FO water flux of seawater RO membranes [166,168].…”

Section: Chemically Modified Fo Membranesmentioning

confidence: 99%

Water desalination by forward (direct) osmosis phenomenon: A comprehensive review

et al. 2015

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Poly(vinyl) alcohol coating of the support layer of reverse osmosis membranes to enhance performance in forward osmosis

Cited by 29 publications

References 24 publications

Immobilization of bacteriocin nisin into a poly(vinyl alcohol) polymer matrix crosslinked with nontoxic dicarboxylic acid

Immobilization of bacteriocin nisin into a poly(vinyl alcohol) polymer matrix crosslinked with nontoxic dicarboxylic acid

Advances in forward osmosis membranes: Altering the sub-layer structure via recent fabrication and chemical modification approaches

Water desalination by forward (direct) osmosis phenomenon: A comprehensive review

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