Effect of flow rate, draw solution concentration and temperature on the performance of TFC FO membrane, and the potential use of RO reject brine as a draw solution in FO-RO hybrid systems

Akther, Nawshad; Daer, Sahar; Hasan, Shadi W.

doi:10.5004/dwt.2018.23195

Cited by 21 publications

(14 citation statements)

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“…resource recovery [5], wastewater treatment [6], brine or seawater dilution [7,8], osmotic membrane bioreactors [9], concentration of aqueous products like fruit juice [10] and dairy whey [11]. The difference in osmotic potential between the draw solution (DS) and feed solution (FS) mainly drives the water through the semi-permeable membrane in FO processes without the need for hydraulic pressure [12].…”

Section: Introductionmentioning

confidence: 99%

Influence of graphene oxide lateral size on the properties and performances of forward osmosis membrane

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Influence of graphene oxide lateral size on the properties and performances of forward osmosis membrane

et al. 2020

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“…However, the draw solute regeneration step in the FO process is significantly energy-intensive, which makes direct desalination with RO more energy-efficient than FO [15]. Nonetheless, FO may be more energetically favorable than RO for high salinity and high fouling potential applications that do not require draw solution regeneration, such as food concentration and brine dilution [16,17].…”

Section: Introductionmentioning

confidence: 99%

Recent advances in nanomaterial-modified polyamide thin-film composite membranes for forward osmosis processes

Akther

Phuntsho

Chen

et al. 2019

Journal of Membrane Science

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Polyamide thin-film composite (PA TFC) membranes have attained much attention for forward osmosis (FO) applications in separation processes, water and wastewater treatment due to their superior intrinsic properties, such as high salt rejection and water permeability compared to the first generation of cellulose-based FO membranes. Nonetheless, several problems like fouling and trade-off between membrane selectivity and water permeability are hindering the progress of conventional PA TFC FO membranes for real applications. To overcome these issues, nanomaterials or chemical additives have been integrated into the TFC membranes. Nanomaterial-modified membranes have demonstrated significant improvement in their anti-fouling properties and FO performance. In addition, PA TFC membranes can be designed for specific applications like heavy metal removal and osmotic membrane bioreactor by using nanomaterials to modify their physicochemical properties (porosity, surface charge, hydrophilicity, membrane structure and mechanical strength). This review provides a comprehensive summary of the progress of nanocomposite PA TFC membrane since its first development for FO in the year 2012. The nanomaterialincorporated TFC membranes are classified into four categories based on the location of nanomaterial in/on the membranes: embedded inside the PA active layer, incorporated within the substrate, coated on the PA layer surface, or deposited as an interlayer between the substrate and the PA active layer. The key challenges still being confronted and the future research directions for nanocomposite PA TFC FO are also discussed.

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“…process [6], heavy metals removal and pharmaceutical product concentration [7,8], food and brine concentration [9,10], membrane bioreactors [11,12], energy production [13] and desalination [14,15].…”

Section: Introductionmentioning

confidence: 99%

The effect of Schiff base network on the separation performance of thin film nanocomposite forward osmosis membranes

Akther

Lim

Tran

et al. 2019

Separation and Purification Technology

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In this study, Schiff base network-1 (SNW-1) nanoparticles, which are covalent organic frameworks (COFs), were used as fillers in the polyamide (PA) active layer to elevate the performance of thin-film nanocomposite (TFN) forward osmosis (FO) membranes. The TFN membranes were prepared by interfacial polymerization (IP) of m-phenylenediamine (MPD) and trimesoyl chloride (TMC), and the SNW-1 nanoparticles were dispersed in the MPD aqueous solution at various concentrations. The secondary amine groups of SNW-1 nanoparticles reacted with the acyl chloride groups of TMC during the IP reaction to form strong covalent/amide bonds, which facilitated better interface integration of SNW-1 nanoparticles in the PA layer. Additionally, the incorporation of amine-rich SNW-1 nanoparticles into the TFN membranes improved their surface hydrophilicity, and the porous structure of SNW-1 nanoparticles offered additional channels for transport of water molecules. The TFN0.005 membrane with a SNW-1 nanoparticle loading of 0.005 wt.% demonstrated a higher water flux than that of pristine TFC membrane in both AL-FS (12.0 vs. 9.3 Lm -2 h -1 ) and AL-DS (25.2 vs. 19.4 Lm -2 h -1 ) orientations when they were tested with deionized water and 0.5 M NaCl as feed and draw solution, respectively.

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Effect of flow rate, draw solution concentration and temperature on the performance of TFC FO membrane, and the potential use of RO reject brine as a draw solution in FO-RO hybrid systems

Cited by 21 publications

References 0 publications

Influence of graphene oxide lateral size on the properties and performances of forward osmosis membrane

Influence of graphene oxide lateral size on the properties and performances of forward osmosis membrane

Recent advances in nanomaterial-modified polyamide thin-film composite membranes for forward osmosis processes

The effect of Schiff base network on the separation performance of thin film nanocomposite forward osmosis membranes

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