Nanoporous polypropylene membrane contactors for CO2 and H2S capture using alkali absorbents

Петухов, Д. И.; Komkova, Maria A.; Poyarkov, A.A.; Eliseev, A. A.

doi:10.1016/j.cherd.2021.11.005

Cited by 16 publications

(3 citation statements)

References 56 publications

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“…14 Waste oil treatment is generally performed at high temperature to decrease its viscosity. However, polymer membranes (poly-vinylidene fluoride (PVDF), [15][16][17] polysulfone (PS), [18][19][20] polyethersulfone (PES), [21][22][23] and polypropylene (PP) [24][25][26] etc.) cannot meet the long-term operation due to bad resistance to high temperatures and solvents.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of harsh environment‐tolerant and robust reinforced poly (tetrafluoroethylene) hollow fiber membranes with optimal heat setting technology

Chen,

Yan

et al. 2024

J of Applied Polymer Sci

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The high‐temperature industrial waste oil treatment has put forward new requirements for membrane materials. Poly (tetrafluoroethylene) (PTFE) is regarded as the excellent membrane material for membrane process, due to its excellent properties. Herein, the reinforced PTFE hollow fiber membrane (PTFE‐HFM) was prepared by the combination of wrapping and heat setting technology. The objection of this study was focusing on the outstanding chemical and thermal resistance of PTEF‐HFM for overcoming harsh waste oil treatment. PTFE‐HFM exhibited better chemical resistance in the experiment of acid and alkali compared to PVDF‐HFM, which the surface of PVDF‐HFM corroded obviously and none of PTFE‐HFM. The pore size and porosity were precisely adjusted by heat setting technology. Firstly, the morphologies of PTFE‐HFM was investigated by scanning electron microscopy, which exhibited favorable interfacial bonding state between PTFE separation layer and supporting layer. Subsequently, the prepared membranes exhibited high‐temperature waste oil permeability of 195 L m−2 h−1 bar−1with only 3% attenuation in long‐term operation. Besides, the rejection of lubricants contained activated carbon also reached to 99%. Overall, the facile preparation and excellent performance of robust reinforced PTFE‐HFM highlights its great potential in treating high‐temperature waste oil.

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Section: Introductionmentioning

confidence: 99%

Fabrication of harsh environment‐tolerant and robust reinforced poly (tetrafluoroethylene) hollow fiber membranes with optimal heat setting technology

Chen,

Yan

et al. 2024

J of Applied Polymer Sci

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“…The stability of various polymeric membranes is being studied by researchers for many applications. For example, in a number of works [ 29 , 30 , 31 , 32 ], the stability of polypropylene (PP), polyvinylidenefluoride (PVDF), polytetrafluoroethylene (PTFE) and polyethylene (PE) membranes was studied. In particular, the authors of [ 29 ] studied the stability of polypropylene membranes in NaOH during the separation of H 2 S and CO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…For example, in a number of works [ 29 , 30 , 31 , 32 ], the stability of polypropylene (PP), polyvinylidenefluoride (PVDF), polytetrafluoroethylene (PTFE) and polyethylene (PE) membranes was studied. In particular, the authors of [ 29 ] studied the stability of polypropylene membranes in NaOH during the separation of H 2 S and CO 2 . On the other side, despite the alkaline environment, even after six months of exposure, the membranes almost did not degrade.…”

Section: Introductionmentioning

confidence: 99%

Stability of Porous Polymeric Membranes in Amine Solvents for Membrane Contactor Applications

et al. 2023

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Membrane gas–liquid contactors have great potential to meet the challenges of amine CO2 capture. In this case, the most effective approach is the use of composite membranes. However, to obtain these, it is necessary to take into account the chemical and morphological resistance of membrane supports to long-term exposure to amine absorbents and their oxidative degradation products. In this work, we studied the chemical and morphological stability of a number of commercial porous polymeric membranes exposed to various types of alkanolamines with the addition of heat-stable salt anions as a model of real industrial CO2 amine solvents. The results of the physicochemical analysis of the chemical and morphological stability of porous polymer membranes after exposure to alkanolamines, their oxidative degradation products, and oxygen scavengers were presented. According to the results of studies by FTIR spectroscopy and AFM, a significant destruction of porous membranes based on polypropylene (PP), polyvinylidenefluoride (PVDF), polyethersulfone (PES) and polyamide (nylon, PA) was revealed. At the same time, the polytetrafluoroethylene (PTFE) membranes had relatively high stability. On the basis of these results, composite membranes with porous supports that are stable in amine solvents can be successfully obtained to create liquid–liquid and gas–liquid membrane contactors for membrane deoxygenation.

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High-pressure adsorption of H2S, CO2 and CH4 on porous aromatic framework (PAF-30) at different temperatures

Ferreira,

Duarte,

de Oliveira

et al. 2024

Adsorption

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Nanoporous polypropylene membrane contactors for CO2 and H2S capture using alkali absorbents

Cited by 16 publications

References 56 publications

Fabrication of harsh environment‐tolerant and robust reinforced poly (tetrafluoroethylene) hollow fiber membranes with optimal heat setting technology

Fabrication of harsh environment‐tolerant and robust reinforced poly (tetrafluoroethylene) hollow fiber membranes with optimal heat setting technology

Stability of Porous Polymeric Membranes in Amine Solvents for Membrane Contactor Applications

High-pressure adsorption of H2S, CO2 and CH4 on porous aromatic framework (PAF-30) at different temperatures

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