Pervaporation of acetone/water mixture by PDMS-PTFE/PVDF composite membrane

Zhang, Qian-Zhi; Li, Bingbing; Li, Pengxian; Li, Dayong; Yang, Ping; Sun, De

doi:10.1080/19443994.2015.1137785

Cited by 6 publications

(3 citation statements)

References 56 publications

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“…Wang et al [5] used PVA pervaporation technology to explore the separation of acetone and water. Zhang et al [6] used the pervaporation technology to separate acetone and water solution by a PDMS composite membrane. Li et al [7] employed layer-by-layer assembled nanohybrid multilayer membranes to separate acetone aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Split Heat Pump Distillation Based on Two‐Stage Compression for Separating an Acetone‐Water Mixture

Yang

Lou

et al. 2021

Chem Eng & Technol

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There is a constant concentration zone for acetone-water mixtures, and the average relative volatility of the two components in the constant concentration zone is only 1.41, so the energy consumption of the conventional distillation process is high. Two kinds of split mechanical vapor recompression (MVR) heat pump distillation processes, i.e., single-stage and two-stage compression processes, were proposed to separate acetone-water mixtures. The thermodynamic data of the mixture were calculated and modules of Aspen Plus were used to simulate the distillation column and steam compressor. Taking the minimum total annual cost as the objective function, the conventional MVR and the two split MVR heat pump distillation processes were simulated and optimized. Compared with the conventional process, the MVR heat pump distillation process had greater economic advantages, and the split heat pump distillation (SHPD) with two-stage compression was superior to the other MVR heat pump distillation processes.

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Section: Introductionmentioning

confidence: 99%

Split Heat Pump Distillation Based on Two‐Stage Compression for Separating an Acetone‐Water Mixture

Yang

Lou

et al. 2021

Chem Eng & Technol

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“…However, PDMS membranes often display trade‐off effects between permeation fluxes and selectivity factor, as well as a large swelling degree . To improve the PV performances of PDMS membranes, various fillers such as silicalite‐1, ZSM‐5, hydrophobic TiO 2 nanoparticles, polytetrafluoroethylene (PTFE) particles, ZIF‐8, ZIF‐7, mesoporous silica spheres/ZIF‐8 core/shell structure particles, MCM‐41@ZIF‐8, etc. were added to PDMS, and the as‐obtained mixed matrix membranes (MMMs) showed improved stability, fluxes and selectivity in comparison with those of pristine PDMS membranes.…”

Section: Introductionmentioning

confidence: 99%

PAF‐11/poly (dimethylsiloxane) mixed matrix pervaporation membranes for dealcoholization of aqueous solutions

Jia

Hao

Jiang

2018

J of Chemical Tech & Biotech

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BACKGROUND Porous aromatic frameworks (PAFs) have received considerable attention due to their designable framework topologies and high stability. In this work PAF‐11 particles were synthesized and incorporated in poly(dimethylsiloxane) (PDMS) matrix for dealcoholation of aqueous solutions for the first time. The effects of PAF‐11 loading on the hydrophobilicity, sorption degree, partition coefficient and pervaporation (PV) performance of mixed matrix membranes (MMMs) were studied. RESULTS It was found that, with the increased PAF‐11 loading, the contact angle of MMMs with water increased whereas the sorption degree in water, ethanol and n‐butanol declined, demonstrating the improved swelling stability of MMMs. Pristine PDMS and MMMs displayed alcohol sorption‐selectivity, and the partition coefficients of ethanol and n‐butanol in MMMs increased with PAF‐11 loading. In the pervaporation of ethanol and n‐butanol aqueous solutions, the MMMs showed an increase in permeation fluxes and separation factor, as well as good stability in long‐term running, demonstrating anti‐trade‐off effects and good application prospects. CONCLUSIONS It was deduced that, in the pervaporation removal of organics from aqueous solutions, anti‐trade‐off effects could be fulfilled by introducing hydrophobic fillers with pore sizes larger than molecules of water and organics. © 2018 Society of Chemical Industry

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“…Thereby, it becomes hard to separate the dissolved acetone from the water by the conventional separation technique [25]. In the literature, purification of dilute acetone-water mixture by PV has been studied by the hydrophobic membrane [26,28].…”

Section: Introductionmentioning

confidence: 99%