Pervaporation dehydration of acetic acid through hollow fiber supported DD3R zeolite membrane

Zhang, Yuting; Chen, Shengze; Du, Peng; Qiu, Xufeng; Gu, Xuehong

doi:10.1016/j.seppur.2018.04.066

Cited by 43 publications

(17 citation statements)

References 37 publications

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“…When the dewatering test temperature was increased from 110 to 140°C, membrane flux increased from 0.20 kg m −2 hr −1 up to 3.48 kg m −2 hr −1 while the rejection rate remained stable. It can be explained that, higher temperature increased the saturation fugacity partial pressure of water on the feed side, which enhanced its driving force for permeation through the membrane; additionally, the self‐diffusion coefficient of water was also accelerated at higher temperatures 46,47 . The rejection rate was above 80% during the first 18, 10, 5, and 2 hr for membranes tested at 110, 120, 130, and 140°C, respectively.…”

Section: Resultsmentioning

confidence: 96%

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

2020

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In amine-based CO 2 capture processes, aqueous amine solvent is circulated between absorber (CO 2 absorption) and stripping (solvent regeneration) columns. To reduce solvent regeneration energy demand, a selective membrane can dewater and enrich the CO 2 concentration in solution prior to the stripper, lowering steam requirements for solution heating. In this work, a facile synthesis strategy was developed to prepare faujasite (FAU) zeolite membranes built upon polydopamine (PDA) modified α-Al 2 O 3 substrates. PDA facilitated the attachment of zeolite phases onto the substrate surface to form a 3 μm membrane layer. Membrane permeation flux of 4.45 kg m −2 h −1 and 95% rejection rate calculated by either CO 2 loading or total alkalinity was achieved in dewatering of CO 2 loaded 30 wt% monoethanolamine (MEA) solution. The effects of temperature on membrane dewatering performance and stability were investigated. This study highlights the potential for process integration of membrane technology in amine-based post-combustion CO 2 capture operations.

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Section: Resultsmentioning

confidence: 96%

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

2020

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“…[12] 3.6 | Hydrophobicity of membrane Generally, with the increase of Si/Al ratio, the hydrophilicity of zeolite membrane gradually decreases, while the acid-resistance concurrently increases. [11] When WCA ranges from 90 to 180 , the hydrophobicity increases with the enhancement of WCA. The water contact angles of different membranes were shown in Table 2.…”

Section: Mechanical Property Analysis Of Membranementioning

confidence: 99%

“…The film, with a stable water flux of 2.2 kg/(m 2 h), had a great separation selectivity. [11] Effective and selective transport in PV also can be incorporated with zeolite filled in. When PDMS/polyvinylidene fluoride (PVDF) was doped with ZSM-5 zeolite, [12] A better separation performance of the composite membranes was observed.…”

Section: Introductionmentioning

confidence: 99%

Pervaporation separation of levulinic acid aqueous solution by ZSM‐5/PDMS composite membrane

Zhang

Gao

et al. 2020

J of Applied Polymer Sci

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This work aims at investigating the special application of ZSM-5/polydimethylsiloxane (PDMS) membrane being used for pervaporation separation of levulinic acid aqueous solutions. The effects of temperature, downstream pressure, feed concentration, and raw material ratio on the separation performance are investigated by self-made flat-sheet films. When the flow rate of feed pump remained at 0.4 ml/min (10 wt% levulinic acid), a levulinic acid permeation flux of 334.13 g/(m 2 h) and a separation factor of 2.382 at 75 C are observed over the composite membrane doped with 10 wt% ZSM-5. In addition, the acid resistance is enhanced after the PDMS membranes are doped with ZSM-5. Besides, the functionalized process also makes the membranes increase in its hydrophobicity. The results demonstrate that the ZSM-5/PDMSbased membranes show profound prospects for separating levulinic acid aqueous solution.

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“…The application of PV for dehydration is not limited to alcohols. Membranes have been developed which have allowed the drying of other industrially useful solvents such as acetic acid [64,[77][78][79], tetrahydrofuran [64,77,80], acetone [64,77,81] and acetonitrile [82].…”

Section: Aqueous-organic Separationsmentioning

confidence: 99%

The potential of polymers of intrinsic microporosity (PIMs) and PIM/graphene composites for pervaporation membranes

et al. 2019

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Pervaporation (PV), a membrane process in which the feed is a liquid mixture and the permeate is removed as a vapour, offers an energy-efficient alternative to conventional separation processes such as distillation, and can be applied to mixtures that are difficult to separate, such as azeotropes. Here the principles of pervaporation and its industrial applications are outlined. Two classes of material that show promise for use in PV membranes are described: Polymers of intrinsic microporosity (PIMs) and 2D materials such as graphene. The literature regarding PV utilizing the prototypical PIM (PIM-1) and it hydrophilic hydrolysed form (cPIM-1) is reviewed. Self-standing PIM-1 membranes give competitive results compared to other membranes reported in the literature for the separation of alcohols and other volatile organic compounds from aqueous solution, and for organic/organic separations such as methanol/ethylene glycol and dimethyl carbonate/methanol mixtures. Blends of cPIM-1 with conventional polymers improve the flux for dehydration of alcohols. The incorporation of fillers, such as functionalised graphene-like fillers, into PIM-1 to form mixed matrix membranes can enhance the separation performance. Thin film composite (TFC) membranes enable very high fluxes to be achieved when a suitable support with high surface porosity is utilised. When functionalised graphene-like fillers are introduced into the selective layer of a TFC membrane, the lateral size of the flakes needs to be carefully controlled. There is a wide range of PIMs and 2D materials yet to be explored for PV applications, which offer potential to create bespoke membranes for a wide variety of organic/aqueous and organic/organic separations.

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Pervaporation dehydration of acetic acid through hollow fiber supported DD3R zeolite membrane

Cited by 43 publications

References 37 publications

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

Pervaporation separation of levulinic acid aqueous solution by ZSM‐5/PDMS composite membrane

The potential of polymers of intrinsic microporosity (PIMs) and PIM/graphene composites for pervaporation membranes

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Pervaporation dehydration of acetic acid through hollow fiber supported DD3R zeolite membrane

Cited by 43 publications

References 37 publications

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO2 capture solutions

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO2 capture solutions

Pervaporation separation of levulinic acid aqueous solution by ZSM‐5/PDMS composite membrane

The potential of polymers of intrinsic microporosity (PIMs) and PIM/graphene composites for pervaporation membranes

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Product

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About

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions