Ultra-high selectivity self-supporting symmetric membrane for forward osmosis separation

Liang, Shiqiang; Wu, Jiequn; Wang, Chi; Zhao, Xiaoxuan; Wang, Chuang; Xia, Yang; Huo, Hongliang; Wang, Tong; Geng, Zhi; Wang, Xiaohong

doi:10.1016/j.desal.2022.115796

Cited by 11 publications

(1 citation statement)

References 42 publications

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“…An ideal FO membrane would have no porous support layer or fiber support layer to eliminate the phenomenon of internal concentration polarization, but the strength of such a membrane would be poor [48]. Therefore, it is necessary to optimize the structure of a membrane by balancing the needs for high performance and high strength [49].…”

Section: Concentration Polarizationmentioning

confidence: 99%

A Comprehensive Review on Forward Osmosis Water Treatment: Recent Advances and Prospects of Membranes and Draw Solutes

Zhu

Chen

et al. 2022

IJERPH

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Forward osmosis (FO) is an evolving membrane separation technology for water treatment and reclamation. However, FO water treatment technology is limited by factors such as concentration polarization, membrane fouling, and reverse solute flux. Therefore, it is of a great importance to prepare an efficient high-density porous membrane and to select an appropriate draw solute to reduce concentration polarization, membrane fouling, and reverse solute flux. This review aims to present a thorough evaluation of the advancement of different draw solutes and membranes with their effects on FO performance. NaCl is still widely used in a large number of studies, and several general draw solutes, such as organic-based and inorganic-based, are selected based on their osmotic pressure and water solubility. The selection criteria for reusable solutes, such as heat-recovered gaseous draw, magnetic field-recovered MNPs, and electrically or thermally-responsive hydrogel are primarily based on their industrial efficiency and energy requirements. CA membranes are resistant to chlorine degradation and are hydrophilic, while TFC/TFN exhibit a high inhibition of bio-adhesion and hydrolysis. AQPs are emerging membranes, due to proteins with complete retention capacity. Moreover, the development of the hybrid system combining FO with other energy or water treatment technologies is crucial to the sustainability of FO.

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Section: Concentration Polarizationmentioning

confidence: 99%