Organic solvent mixture separation using fluorine-incorporated thin film composite reverse osmosis membrane

Kushida, Wataru; Gonzales, Ralph Rolly; Shintani, Takuji; Matsuoka, Atsushi; Nakagawa, Keizo; Yoshioka, Tomohisa; Matsuyama, Hideto

doi:10.1039/d1ta09192a

Cited by 36 publications

(17 citation statements)

References 62 publications

(82 reference statements)

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“…Pressure in the range of 1 to 3 MPa was applied using a back pressure valve. To suppress the concentration polarization on the membrane surface, a magnetic stirrer stirring at 200 rpm was placed in the membrane cell 11 . Membrane permeance ( J w ) was calculated using the equation:

J_{w} goodbreak= \frac{V_{italicpermeate}}{A ∙ t}

where V permeate , A , and t are the permeate volume, membrane area, and filtration time, respectively.…”

Section: Methodsmentioning

confidence: 99%

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Monoamine‐modified thin film composite nanofiltration membrane for permselective separation of fermentation bioproducts

Gonzales

Shintani

Sunami

et al. 2022

J of Applied Polymer Sci

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One process involved in biorefinery for generation of value-added products is fermentation. After fermentation, the downstream bioproduct purification process is conventionally performed by organic solvent extraction, which is environmentallyhazardous and costly. Membrane-based separation is a cost-efficient and environmentally-benign method for bioproduct separation and purification. In this study, a thin film composite (TFC) nanofiltration (NF) membrane was prepared and the pore size and charge of the polyamide layer were controlled by introducing iminodiacetic acid (IDA), a charged monoamine monomer, with piperazine (PIP) during interfacial polymerization (IP). The newly-developed NF membrane was found to have a molecular weight cut-off (MWCO) of 500 to 1350 Da, allowing the permeation of the fermentation product, while rejecting other higher molecular weight compounds. IDA addition in the aqueous amine solution during IP effectively engineered the MWCO values and pore sizes of TFC NF membranes for specific applications, such as separation of fermentation bioproducts. This study successfully showed that IDA reduced the diffusivity of PIP during IP, which negatively affected the polyamide formation and membrane performance. The optimal PIP:IDA concentration ratio was determined by MWCO and effective pore diameter for effective bioproduct separation and purification, which could not be performed by the current commercially-available NF membranes.

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J_{w} goodbreak= \frac{V_{italicpermeate}}{A ∙ t}

where V permeate , A , and t are the permeate volume, membrane area, and filtration time, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…To suppress the concentration polarization on the membrane surface, a magnetic stirrer stirring at 200 rpm was placed in the membrane cell. 11 Membrane permeance (J w ) was calculated using the equation:…”

Section: Membrane Performance Evaluationmentioning

confidence: 99%

Monoamine‐modified thin film composite nanofiltration membrane for permselective separation of fermentation bioproducts

Gonzales

Shintani

Sunami

et al. 2022

J of Applied Polymer Sci

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“…where SAC is salt adsorption capacity (mg g −1 ), and t is the time at which desalination takes place (s). Charge efficiency (L, %) represents the percentage of charge used for salt removal and is calculated according to eqn (3).…”

Section: Tests With Prepared Electrodesmentioning

confidence: 99%

“…1,2 Purication techniques such as multi-effect distillation, reverse osmosis (RO), and electrodialysis have been developed for brackish water desalination. 3,4 Nevertheless, the intense energy input for these conventional desalination techniques dramatically enhances the overall carbon footprint and thus restricts their large-scale application. Capacitive deionization (CDI) is an energy-efficient and recyclable water treatment technique.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline-decorated porous carbons with engineered meso/macrochannels for high performance capacitive deionization

Cao

et al. 2022

J. Mater. Chem. A

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“…However, thin-film composite membranes made from conventional chemistry exhibit limited permeance of hydrocarbon liquids, owing to the hydrophilic nature of polyamide or polyester networks in the separating layer (7)(8)(9). To enhance the hydrophobicity, attempts have been made to cap the polyamide layer with hydrophobic groups or introduce hydrophobic groups to the monomers used during the interfacial reaction (10)(11)(12)(13)(14)(15). The permeanceselectivity range of the resulting membranes improved, but the permeance remains too low for industrial crude separation (5,6,16).…”

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confidence: 99%

Hydrophobic polyamide nanofilms provide rapid transport for crude oil separation

Dong

Musteata

et al. 2022

Science

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Hydrocarbon separation relies on energy-intensive distillation. Membrane technology can offer an energy-efficient alternative but requires selective differentiation of crude oil molecules with rapid liquid transport. We synthesized multiblock oligomer amines, which comprised a central amine segment with two hydrophobic oligomer blocks, and used them to fabricate hydrophobic polyamide nanofilms by interfacial polymerization from self-assembled vesicles. These polyamide nanofilms provide transport of hydrophobic liquids more than 100 times faster than that of conventional hydrophilic counterparts. In the fractionation of light crude oil, manipulation of the film thickness down to ~10 nanometers achieves permeance one order of magnitude higher than that of current state-of-the-art hydrophobic membranes while retaining comparable size- and class-based separation. This high permeance can markedly reduce plant footprint, which expands the potential for using membranes made of ultrathin nanofilms in crude oil fractionation.

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Organic solvent mixture separation using fluorine-incorporated thin film composite reverse osmosis membrane

Abstract: Organic solvent reverse osmosis (OSRO) is currently considered as an energy-efficient membrane technology for separation of organic liquid mixtures. The conventional hydrophilic polyamide thin film (TFC) membrane was previously reported...

Cited by 36 publications

References 62 publications

Monoamine‐modified thin film composite nanofiltration membrane for permselective separation of fermentation bioproducts

Monoamine‐modified thin film composite nanofiltration membrane for permselective separation of fermentation bioproducts

Polyaniline-decorated porous carbons with engineered meso/macrochannels for high performance capacitive deionization

Hydrophobic polyamide nanofilms provide rapid transport for crude oil separation

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