Loose nanofiltration membrane custom-tailored for resource recovery

Guo, Shiwei; Wan, Yinhua; Chen, Xiangrong; Luo, Jianquan

doi:10.1016/j.cej.2020.127376

Cited by 196 publications

(32 citation statements)

References 240 publications

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“…Conventional NF membranes have pore sizes of around 1 nm, 21 and the incorporation of monoamine IDA in the aqueous amine monomer solution during IP successfully increased the effective pore diameter of the TFC NF membranes. Furthermore, the MWCO values of commercially available NF membranes are either within the following ranges: 150–300 and 3000–5000 Da 22 . According to the MWCO values presented in Table 3, the TFC NF membranes prepared in this study after the incorporation of IDA all exhibited MWCO values which are not found in current commercially available NF membranes (Figure 8).…”

Section: Resultsmentioning

confidence: 72%

“…Furthermore, the MWCO values of commercially available NF membranes are either within the following ranges: 150-300 and 3000-5000 Da. 22 According to the MWCO values presented in Table 3, the TFC NF membranes prepared in this study after the incorporation of IDA all exhibited MWCO values which are not found in current commercially available NF membranes (Figure 8). This allows the TFC NF membranes prepared in this study to be used for niche NF applications, such as fermentation product separation.…”

Section: Molecular Weight Cut-off Determinationmentioning

confidence: 69%

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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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Section: Resultsmentioning

confidence: 72%

Section: Molecular Weight Cut-off Determinationmentioning

confidence: 69%

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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“…By regulating the pore size and its homogeneity of NF membrane, the precise control of molecular weight of bio‐products can also be achieved [21]. For instance, the NF membranes with loose separation layer enabled to fractionate oligosaccharide and low‐molecular‐weight sugars/other substances, and the large membrane pore size enhanced permeate flux and reduced membrane fouling [22]. Moreover, as many biomolecules are ionizable, Donnan effect plays an important role in their separation.…”

Section: Application Of Nf In Bio‐separationmentioning

confidence: 99%

Nanofiltration membrane for bio‐separation: Process‐oriented materials innovation

Cao

Chen

Wan

et al. 2021

Engineering in Life Sciences

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Nanofiltration (NF) with advantages of high efficiency and low‐cost has attracted increasing attentions in bio‐separation. However, the large‐scale application is limited by the inferior molecular selectivity, low chemical stability and serious membrane fouling. Many efforts, thus, have been devoted in NF materials design for specific applications to enhance the separation efficiency of bio‐products and increase membrane life‐time, as well as reduce the operating cost. This review summarized the recent progress of NF applications in bio‐separation, discussed various demands for NF membrane in the bio‐products purification and corresponding material innovations, finally proposed several practical suggestions for future research, which provided directions and guidance toward further product development and process industrialization.

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“…In addition to the hydrophobicity and hydrophilicity of a membrane, membrane charge should be considered. Most of nanofiltration membrane carry negatively charged groups (Guo et al, 2020). Considering that BMOs and CMOs contain large amounts of acidic oligosaccharides (negatively charged), electrostatic repulsion forces between acidic oligosaccharides and the nanofiltration membrane could improve the retention of acidic oligosaccharides during the filtration, contributing to improve BMOs and CMOs retention.…”

Section: Membrane Typementioning

confidence: 99%

Membrane separation processes for enrichment of bovine and caprine milk oligosaccharides from dairy byproducts

Wang

JingHua

2021

Comp Rev Food Sci Food Safe

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Breast milk is an ideal source of human milk oligosaccharides (HMOs) for isolation and purification. However, breast milk is not for sale and at most is distributed to neonatal intensive care units as donor milk. To overcome this limitation, isolating HMOs analogs including bovine milk oligosaccharides (BMOs) and caprine milk oligosaccharides (CMOs) from other sources is timely and significant. Advances in the development of equipment and analytical methods have revealed that dairy processing byproducts are good sources of BMOs and CMOs. Enrichment of these oligosaccharides from dairy byproducts, such as whey, permeate, and mother liquor, is of increasing academic and economic value. The commonly employed approach for oligosaccharides purification is chromatographic technique, but it is only used at lab scale. In the dairy industry, chromatographic methods (large‐scale ion exchange, 10,000 L size) are currently routinely used for the isolation/purification of milk proteins (e.g., lactoferrin). In contrast, membrane technology has been proven to be a suitable approach for the isolation and purification of BMOs and CMOs from dairy byproducts. Therefore, this review simply introduces BMOs and CMOs in dairy processing byproducts. This review also summarizes membrane separation processes for isolating and purifying BMOs and CMOs from different dairy byproducts. Finally, the technological challenges and solutions of each processing strategy are discussed in detail.

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Loose nanofiltration membrane custom-tailored for resource recovery

Cited by 196 publications

References 240 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

Nanofiltration membrane for bio‐separation: Process‐oriented materials innovation

Membrane separation processes for enrichment of bovine and caprine milk oligosaccharides from dairy byproducts

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