Recent Advances of Pervaporation Separation in DMF/H2O Solutions: A Review

Zhang, Zongqi; Xu, Shimei; Wu, Yuanfeng; Shi, Shengbin; Xiao, Guomin

doi:10.3390/membranes11060455

Cited by 13 publications

(11 citation statements)

References 146 publications

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“…Mixed-matrix membranes have commonly been found to improve the separation of CO 2 and CH 4 gases. Despite developing innovative membranes, researchers have extensively researched in order to improve the gas permeability and polymer structure of these membranes in order to ease gas separation [ 49 ].…”

Section: Development and Production Of Nano-based Polymeric Membranesmentioning

confidence: 99%

Nanoparticle-Embedded Polymers and Their Applications: A Review

Khdary,

Almuarqab,

El Enany

2023

Membranes

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There has been increasing interest in the study and development of nanoparticle-embedded polymeric materials and their applications to special membranes. Nanoparticle-embedded polymeric materials have been observed to have a desirable compatibility with commonly used membrane matrices, a wide range of functionalities, and tunable physicochemical properties. The development of nanoparticle-embedded polymeric materials has shown great potential to overcome the longstanding challenges faced by the membrane separation industry. One major challenge that has been a bottleneck to the progress and use of membranes is the balance between the selectivity and the permeability of the membranes. Recent developments in the fabrication of nanoparticle-embedded polymeric materials have focused on how to further tune the properties of the nanoparticles and membranes to improve the performance of the membranes even further. Techniques for improving the performance of nanoparticle-embedded membranes by exploiting their surface characteristics and internal pore and channel structures to a significant degree have been incorporated into the fabrication processes. Several fabrication techniques are discussed in this paper and used to produce both mixed-matrix membranes and homogenous nanoparticle-embedded polymeric materials. The discussed fabrication techniques include interfacial polymerization, self-assembly, surface coating, and phase inversion. With the current interest shown in the field of nanoparticle-embedded polymeric materials, it is expected that better-performing membranes will be developed soon.

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Section: Development and Production Of Nano-based Polymeric Membranesmentioning

confidence: 99%

Nanoparticle-Embedded Polymers and Their Applications: A Review

Khdary,

Almuarqab,

El Enany

2023

Membranes

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“…The undoubted advantages of PV are high separation efficiency, low pollution, safe operation, and low power consumption [ 27 ]. Successful realization of the pervaporation separation is possible only under the correct choice of a membrane material [ 28 , 29 ]. Up to date, various membrane materials have been studied for the separation of MeOH/DMC mixtures by pervaporation [ 30 , 31 , 32 , 33 , 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Design of Co-Poly(Hydrazide Imide) and Its Complex with Cu(I) for Membrane Separation of Methanol/Dimethyl Carbonate Mixture

et al. 2023

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Poly(2,2′-biquinoline-6,6′-dicarbohydrazide)-co-(bistrimelliteimide)methylene-bisanthranylide (PHI) and its metal–polymer complex PHI-Сu(I) containing several types of functional groups (hydrazide, carboxyl, amide, and imide fragments) were synthesized to prepare two types of dense nonporous membranes. The study on morphology using scanning electron microscopy (SEM), measurements of mechanical, thermal, and transport properties of the membrane samples was carried out. The main mechanical properties of both membranes do not differ significantly, but the values of ultimate deformation differ palpably as a result of a non-uniform character of the deformation process for the PHI membrane. The thermal analysis based on the curves of thermogravimetric (TGA) and differential thermal (DTA) analyses of the PHI and PHI-Cu(I) membranes revealed peculiarities of the membrane structure. Transport properties were studied in pervaporation (PV) of methanol (MeOH) and dimethyl carbonate (DMC) mixtures including an azeotropic point. Intrinsic properties of the penetrant–membrane system were also determined. It was found that the total flux is higher through the PHI membrane, but the PHI-Сu(I) membrane exhibits a higher separation factor. Calculation of the pervaporation separation index (PSI) allowed to conclude that the PHI-Сu(I) membrane exhibits better transport properties as compared with the PHI membrane.

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“…N,N-dimethylformamide (DMF) is a polar solvent with a high boiling point (153 °C) that can dissolve both in water and most organic solvents. It is commonly used for extracting acetylene and manufacturing polyacrylonitrile fibers, as well as in organic synthesis, dyes, pharmaceuticals, and petroleum refining and resin industries [ 1 , 2 , 3 ]. After being used, the DMF concentration up to ~5–25 (wt.%) in wastewater is difficult to be recycled with a distillation process and, moreover, it is known that DMF is chemically stable in wastewater and can hardly biodegrade [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Bis(triethoxysilyl)ethane (BTESE)–Organosilica Membranes for H2O/DMF Separation in Reverse Osmosis (RO): Evaluation and Correlation of Subnanopores via Nanopermporometry (NPP), Modified Gas Translation (mGT) and RO Performance

Mohd Ibrahim,

Sawamura,

Mishina

et al. 2023

Membranes

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A 40 cm length Bis(triethoxysilyl)ethane (BTESE) membrane having different pore sizes was successfully prepared by changing the number of coating times for gas permeation (GP) and organic solvent reverse osmosis (OSRO) separation study. It was found that BTESE-6 membranes prepared through six-time coating consisted of small-sized pores in the range 0.56 to 0.64 nm estimated using modified Gas Translation (mGT) method and 0.59 to 0.67 nm estimated by nanopermporometry (NPP) method, respectively. These membranes demonstrated a high DMF rejection, RDMF > 95% with total flux, Jv total > 5 kg m−2 h−1 at operating condition feed pressure, Pf: 8 MPa; feed temperature, Tf : 50 °C; and feed flowrate, Qf : 30 mL/min; and they exhibited a high degree selectivity of He/SF6 in the range of ~ 260–3400 at a permeation temperature 200 °C. On the other hand, the larger pore sizes of the BTESE-4 membranes (pore size estimates > 0.76 nm to 1.02 nm) exhibited low DMF rejection and a low degree selectivity of He/SF6 around ~30% and 25, respectively, at the same operating condition as BTESE-6. Both GT and NPP methods can be considered as an indicator of the measurement membrane pore size. From this study, it was found that He and SF6 gases can be some of the potential predictors for water and DMF permeance. Furthermore, by comparing our OSRO membrane with other PV membranes for DMF/H2O separation, our BTESE-6 membranes still exhibited high flux in the range of 3–6 kg m−2 h−1 with a separation factor H2O/DMF in the range of 80–120.

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Recent Advances of Pervaporation Separation in DMF/H2O Solutions: A Review

Cited by 13 publications

References 146 publications

Nanoparticle-Embedded Polymers and Their Applications: A Review

Nanoparticle-Embedded Polymers and Their Applications: A Review

Novel Design of Co-Poly(Hydrazide Imide) and Its Complex with Cu(I) for Membrane Separation of Methanol/Dimethyl Carbonate Mixture

Bis(triethoxysilyl)ethane (BTESE)–Organosilica Membranes for H2O/DMF Separation in Reverse Osmosis (RO): Evaluation and Correlation of Subnanopores via Nanopermporometry (NPP), Modified Gas Translation (mGT) and RO Performance

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