Membranes and processes for forward osmosis-based desalination: Recent advances and future prospects

Wang, Yining; Goh, Kunli; Li, Xuesong; Setiawan, Laurentia; Wang, Rong

doi:10.1016/j.desal.2017.10.028

Cited by 146 publications

(80 citation statements)

References 196 publications

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“…Hollow fiber membranes (as shown in Figure 2) are tubular-shaped membranes and this configuration provides key benefits including a self-supporting structure and high packing density in membrane modules [49]. Hollow fiber membranes commonly feature a higher mechanical strength due to their geometrical (circular) structure.…”

Section: Membrane Configurationsmentioning

confidence: 99%

“…Hollow fiber membranes commonly feature a higher mechanical strength due to their geometrical (circular) structure. The fabric support-free hollow fiber configurations could also give rise to better control of the structural parameters [49]. Furthermore, the hollow fiber membrane module demonstrates higher efficiency (flux) of mass transfer compared to the flat-sheet (spiral-wound) module [50].…”

Section: Membrane Configurationsmentioning

confidence: 99%

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Factors Affecting the Performance of Membrane Osmotic Processes for Bioenergy Development

et al. 2020

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Forward osmosis (FO) and pressure-retarded osmosis (PRO) have gained attention recently as potential processes to solve water and energy scarcity problems with advantages over pressure-driven membrane processes. These processes can be designed to produce bioenergy and clean water at the same time (i.e., wastewater treatment with power generation). Despite having significant technological advancement, these bioenergy processes are yet to be implemented in full scale and commercialized due to its relatively low performance. Hence, massive and extensive research has been carried out to evaluate the variables in FO and PRO processes such as osmotic membrane, feed solutions, draw solutions, and operating conditions in order to maximize the outcomes, which include water flux and power density. However, these research findings have not been summarized and properly reviewed. The key parts of this review are to discuss the factors influencing the performance of FO and PRO with respective resulting effects and to determine the research gaps in their optimization with the aim of further improving these bioenergy processes and commercializing them in various industrial applications.

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Section: Membrane Configurationsmentioning

confidence: 99%

Section: Membrane Configurationsmentioning

confidence: 99%

Factors Affecting the Performance of Membrane Osmotic Processes for Bioenergy Development

et al. 2020

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“…Flat sheet TFC-FO membranes were prepared by phase inversion of PSf support layer and cast on to a fabric backing layer followed by IP for the active layer [6,56].In comparison with the TFC-RO membrane, the TFC-FO membrane is thinner, has higher porosity and hydrophilicity [45].…”

Section: Thin Film Composite Membranes (Tfc)mentioning

confidence: 99%

“…Accordingly, the difference in osmotic pressure drives the water through a semi-permeable membrane to the higher osmotic pressure side while hindering the transport of ions [5,6,7,8].…”

mentioning

confidence: 99%

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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“…Among various technologies for desalination, forward osmosis (FO) process has been recently adopted as a promising alternative to conventional RO processes [9,10]. This is because FO does not rely on hydraulic pressure difference to separate salts from fresh water [11].…”

Section: Introductionmentioning

confidence: 99%

Scale formation mechanisms and its control by antiscalants in FO membrane under low temperature conditions

Lee¹,

Choi²,

Cho³

et al. 2019

Desalination and Water Treatment

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The performance of forward osmosis (FO) membrane process is generally influenced by the characteristics of the feed and draw solutions. Assuming that FO is applied in cold regions, the temperature of the feed or draw solution may be low, thereby affecting the water productivity and fouling propensity of FO membranes. Unfortunately, little information is available on the capability of FO to low-temperature waters. Accordingly, this study intends to examine the scale formation in FO membrane process under low temperature conditions. Experiments were carried out in a bench-scale experimental setup using flat sheet commercial FO membrane. The feed temperature was fixed at 25°C and the draw solution temperature was varied from 5°C to 25°C. Mechanisms of scale formation under low-temperature conditions were explored. The effectiveness of antiscalant to control scale formation in FO process was also investigated as a function of draw solution temperature. Results showed that the mechanism of scale formation under low-temperature is different from those under room temperature condition. The comparison of morphologies of the crystals on the FO membrane surfaces revealed the different mechanisms of scale control by the antiscalant under different temperatures.

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Membranes and processes for forward osmosis-based desalination: Recent advances and future prospects

Cited by 146 publications

References 196 publications

Factors Affecting the Performance of Membrane Osmotic Processes for Bioenergy Development

Factors Affecting the Performance of Membrane Osmotic Processes for Bioenergy Development

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

Scale formation mechanisms and its control by antiscalants in FO membrane under low temperature conditions

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