Relating forward water and reverse salt fluxes to membrane porosity and tortuosity in forward osmosis: CFD modelling

Kahrizi, Mohammad; Lin, Jiuyang; Ji, Guozhao; Kong, Lingxue; Song, Chengwen; Dumée, Ludovic F.; Sahebi, Soleyman; Zhao, Shuaifei

doi:10.1016/j.seppur.2020.116727

Cited by 37 publications

(11 citation statements)

References 37 publications

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“…A recent study showed by CFD modeling that the porosity (support layer) has an effect on both RSF and forward water flux. Considering this, increasing support layer porosity or reducing tortuosity within is not always and necessarily desirable since it may also result in higher RSF 29 …”

Section: Resultsmentioning

confidence: 99%

“…Currently, applied membranes in the FO process are highly influenced by concentration polarization, leading to less water flux 29 . Therefore, researchers are attempting to make use of new and better membranes with high mechanical and chemical resistance to provide higher water flux and saline compounds rejection and to minimize internal concentration polarization (ICP) 22,30‐33 …”

Section: Introductionmentioning

confidence: 99%

“…27,28 Currently, applied membranes in the FO process are highly influenced by concentration polarization, leading to less water flux. 29 Therefore, researchers are attempting to make use of new and better membranes with high mechanical and chemical resistance to provide higher water flux and saline compounds rejection and to minimize internal concentration polarization (ICP). 22,[30][31][32][33] Taking inspiration from nature and in order to provide high water flux with the aid of natural proteins, a notable innovation in membrane technologies is being developed.…”

Section: Introductionmentioning

confidence: 99%

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Performance evaluation of aquaporin forward osmosis membrane using chemical fertilizers as a draw solution

Mirshekar

Kamarehie

Jafari

et al. 2020

Env Prog and Sustain Energy

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The performance of a newly commercialized aquaporin (AQP)‐based biomimetic forward osmosis (FO) membrane was evaluated with several commonly used fertilizers ((CO (NH2)2, KCl, CaCl2, (NH4)2SO4 and (NH4)2HPO4) as a draw solutions (DSs) to verifying the possible implementation of this AQP‐FO membrane in the fertigation industry. Also, DS and feed solution (FS) concentrations were evaluated under FO and pressure retarded osmosis (PRO) operation modes. The results showed that CaCl2 seems to be a more suitable DS in terms of the tradeoff between water flux and salt permeability, compared to the other DSs used in this study. However, KCl gained the highest performance in terms of water flux which was 13.9 and 24.1 Lm−2 h−1 in the FO and PRO mode, respectively. The performance of the AQP membrane in terms of water flux and reverse solute flux can be improved by modifying the structural and the membrane inhibitor layer characteristics for utilizing in commercial scales to compete with other available membranes of the FO process.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance evaluation of aquaporin forward osmosis membrane using chemical fertilizers as a draw solution

Mirshekar

Kamarehie

Jafari

et al. 2020

Env Prog and Sustain Energy

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“…Despite the minimal energy demand for FO, there are several challenges to consider in the development of FO: concentration polarization (CP), DS recovery, and fouling deposition in case of a high fouling feed stream [ 30 ]. CP can be divided into two types: internal concentration polarization (ICP) and external concentration polarization (ECP) [ 31 ]. The ECP could be mitigated by changing the operation condition such as the crossflow velocity and the spacer and module channel design, because it occurs on both side of the membrane surface [ 32 ]; by contrast, membrane support layer influences the ICP, so the solution is to modify the membrane structure such as porosity, tortuosity, and thickness to minimum the effect of ICP [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Zwitterions in Forward Osmosis: A Short Review

et al. 2021

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Forward osmosis (FO) is an important desalination method to produce potable water. It was also used to treat different wastewater streams, including industrial as well as municipal wastewater. Though FO is environmentally benign, energy intensive, and highly efficient; it still suffers from four types of fouling namely: organic fouling, inorganic scaling, biofouling and colloidal fouling or a combination of these types of fouling. Membrane fouling may require simple shear force and physical cleaning for sufficient recovery of membrane performance. Severe fouling may need chemical cleaning, especially when a slimy biofilm or severe microbial colony is formed. Modification of FO membrane through introducing zwitterionic moieties on the membrane surface has been proven to enhance antifouling property. In addition, it could also significantly improve the separation efficiency and longevity of the membrane. Zwitterion moieties can also incorporate in draw solution as electrolytes in FO process. It could be in a form of a monomer or a polymer. Hence, this review comprehensively discussed several methods of inclusion of zwitterionic moieties in FO membrane. These methods include atom transfer radical polymerization (ATRP); second interfacial polymerization (SIP); coating and in situ formation. Furthermore, an attempt was made to understand the mechanism of improvement in FO performance by zwitterionic moieties. Finally, the future prospective of the application of zwitterions in FO has been discussed.

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“…As an emerging membrane technology, forward osmosis (FO) has been intensively investigated for desalination (Zhao et al, 2012). However, the desalination performance of FO membranes in terms of water permeability, salt selectivity, and concentration polarization still needs improvement (Kahrizi et al, 2020). Li et al reported thin film composite FO membranes with graphene oxide nanosheets incorporated in the polyamide layer during interfacial polymerization.…”

mentioning

confidence: 99%

Editorial: Advanced Membrane Science and Technology for Sustainable Environmental Applications

Zhao

Shen

2020

Front. Chem.

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Relating forward water and reverse salt fluxes to membrane porosity and tortuosity in forward osmosis: CFD modelling

Cited by 37 publications

References 37 publications

Performance evaluation of aquaporin forward osmosis membrane using chemical fertilizers as a draw solution

Performance evaluation of aquaporin forward osmosis membrane using chemical fertilizers as a draw solution

Application of Zwitterions in Forward Osmosis: A Short Review

Editorial: Advanced Membrane Science and Technology for Sustainable Environmental Applications

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