CO 2  absorption using gas-liquid membrane contactors made of highly porous poly(vinyl chloride) hollow fiber membranes

Fashandi, Hossein; Ghodsi, Ali; Saghafi, Reza; Zarrebini, Mohammad

doi:10.1016/j.ijggc.2016.06.010

Cited by 32 publications

(8 citation statements)

References 49 publications

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“…Both MT-A and MT-B membranes showed a significant increase in water contact angle from 75 to 123, owing to the hydrophobic nature of perfluoro groups on the surface and the change in surface roughness of silica particles. It is noteworthy the water contact angles of our membranes are greater than those of other hydrophobic membranes including PVC, PVDF, PP and PDMS that have been used in membrane contactor applications [27][28][29]. Due to the increase in hydrophobicity, LEPw of both membranes were observed to be very high in contrast to the original membranes of which the pores are easily accessible by water even at low pressure.…”

Section: Polymer-fluorinated Silica Composite Hollow Fiber Membranesmentioning

confidence: 80%

Polymer-fluorinated silica composite hollow fiber membranes for the recovery of biogas dissolved in anaerobic effluent

Wongchitphimon

Rongwong

Chuah

et al. 2017

Journal of Membrane Science

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Section: Polymer-fluorinated Silica Composite Hollow Fiber Membranesmentioning

confidence: 80%

Polymer-fluorinated silica composite hollow fiber membranes for the recovery of biogas dissolved in anaerobic effluent

Wongchitphimon

Rongwong

Chuah

et al. 2017

Journal of Membrane Science

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“…Poly(vinylidene fluoride) (PVDF) is widely used in membrane products because of its good chemical resistance, high mechanical strength, and excellent thermal stability . PVDF has been broadly applied in the fields of wastewater treatment, membrane contactors, membrane distillation, and so on. However, because of the hydrophobic properties of PVDF membranes, they easily accumulate dirt in the filtration process; this can decrease the membrane efficiency and increase the cost of membrane cleaning .…”

Section: Introductionmentioning

confidence: 99%

Poly(vinylidene fluoride)–polyacrylonitrile blend flat‐sheet membranes reinforced with carbon nanotubes for wastewater treatment

Gao

et al. 2017

J of Applied Polymer Sci

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In this reported study, poly(vinylidene fluoride) (PVDF) and polyacrylonitrile (PAN) blend flat-sheet membranes were prepared via a phase-inversion method with various loadings of multiwalled carbon nanotubes. The effects of the carbon nanotubes (CNTs) on the performance and morphology of the PVDF-PAN composites were investigated via tests of the pure water flux and rejection of bovine serum albumin, scanning electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and contact angle (CA) analysis. The experimental results demonstrate that the CNTs contributed to the improvement of the flux and hydrophilicity of the membranes. The maximum value of the flux was 398.1 L m 22 h 21 , and the value of CA for the composite membranes was found to be 488. In addition, the results of the mechanical properties tests illustrate that the brittleness and plasticity of the hybrid membranes were greatly improved by the presence of the CNTs. The flux recovery ratio was maintained at 75%; this demonstrated that the PVDF-PAN membranes enhanced with the CNTs possessed good antifouling performance.Polyacrylonitrile (PAN) is also a common microfiltration and ultrafiltration membrane material by virtue of its chemical stability, thermal stability, low cost, and tolerance to organic solvents. 5,32 The molecular structures of PVDF and PAN are Additional Supporting Information may be found in the online version of this article.

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“…This phenomenon could be attributed to the difference in the mass transfer as every solution has its own surface tension. Liquid absorbent with low surface tension has low liquid phase boundary layer resistance, and therefore, allows high mass transfer 36,39 . Of all the liquid absorbents used in this study, DI water has the highest liquid surface tension value of 71.6 mN/m, while for 1 M KOH and 1 M NH 4 OH, the liquid surface tension value was in the range of 68.0–68.3 mN/m.…”

Section: Resultsmentioning

confidence: 93%

Comparison of separation performance of absorption column and membrane contactor system for biohydrogen upgraded from palm oil mill effluent fermentation

Rohani

Yusoff

Amran

et al. 2020

Env Prog and Sustain Energy

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Treatment of palm oil mill effluent (POME) via fermentation under controlled conditions can produce a high‐value biohydrogen (H2) mixture containing carbon dioxide (CO2). This H2 can be enriched before it can be used for renewable energy, that is, in fuel cell. In this work, H2 was upgraded via two techniques, namely absorption column and membrane contactor system. Ammonium hydroxide (NH4OH), potassium hydroxide (KOH), and mixed solution of NH4OH and KOH were used as the chemical absorbents for both techniques. In the absorption column, it was found that the mixed solution provided the highest H2 purity (99%) at 1 M concentration with a gas flow rate of 0.2 L/min. Meanwhile, the mixed solution and KOH solution showed similar separation performance with H2 purity of up to 75% in the gas–liquid membrane contactor. On investigating the separation performance for each of the compared techniques, it was found that the absorption column has a superior ability to purify H2 than the membrane contactor system. However, the membrane contactor is more sustainable as it has the least drop in H2 purity at a longer separation time during the separation process. Both techniques have their own advantages in purifying H2, and thus they can be fairly considered for gas upgrading.

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CO 2 absorption using gas-liquid membrane contactors made of highly porous poly(vinyl chloride) hollow fiber membranes

Cited by 32 publications

References 49 publications

Polymer-fluorinated silica composite hollow fiber membranes for the recovery of biogas dissolved in anaerobic effluent

Polymer-fluorinated silica composite hollow fiber membranes for the recovery of biogas dissolved in anaerobic effluent

Poly(vinylidene fluoride)–polyacrylonitrile blend flat‐sheet membranes reinforced with carbon nanotubes for wastewater treatment

Comparison of separation performance of absorption column and membrane contactor system for biohydrogen upgraded from palm oil mill effluent fermentation

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