Characterization of pore size distribution of non-woven fibrous filter by inscribed sphere within 3D filter model

Nakamura, Kazuho; Suda, T; Matsumoto, Kanji

doi:10.1016/j.seppur.2018.01.012

Cited by 13 publications

(7 citation statements)

References 24 publications

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“…The membranes also become more porous with a larger average pore size as a higher amount of OCT-MMT particles is embedded (Figure b). The more porous structure renders a higher surface area and provides a more effective platform for adsorption. , The incorporation of metallic or ceramic nanoparticles in the electrospinning solutions increases the electrospinning dope viscosity. , Higher viscoelastic forces of more viscous spinning solution resist the axial stretching during whipping; hence, larger fiber diameters are formed. , As shown in eq , the larger fiber diameter leads to larger pore sizes and slightly bigger pore volumes. , Based on the studies in the literature and eq , the pore size of the ENMs depends on both fiber diameter and porosity. However, the fiber diameter is the more dominant factor compared to the porosity of the ENMs.…”

Section: Resultsmentioning

confidence: 84%

“… 45 , 46 As shown in eq 14 , the larger fiber diameter leads to larger pore sizes and slightly bigger pore volumes. 47 , 48 Based on the studies in the literature 49 and eq 14 , the pore size of the ENMs depends on both fiber diameter and porosity. However, the fiber diameter is the more dominant factor compared to the porosity of the ENMs.…”

Section: Resultsmentioning

confidence: 99%

“…Nakamura et al investigated the effect of porosity on the pore size of the fibrous filter media with fixed fiber diameter and reported that the effect of porosity on the pore size is insignificant compared to the fiber diameter. 49 This result can be attributed to the three-dimensional, highly interconnected, and tortuous structure of the nanofibrous membranes, resulting in high porosity values. 50 , 51 Kiani et al reported the same observation for the effect of porosity on the pore size of ENMs.…”

Section: Resultsmentioning

confidence: 99%

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Green Electrospun Membranes Based on Chitosan/Amino-Functionalized Nanoclay Composite Fibers for Cationic Dye Removal: Synthesis and Kinetic Studies

et al. 2021

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Chitosan/poly(vinyl alcohol)/amino-functionalized montmorillonite nanocomposite electrospun membranes with enhanced adsorption capacity and thermomechanical properties were fabricated and utilized for the removal of a model cationic dye (Basic Blue 41). Effects of nanofiller concentrations (up to 3.0 wt %) on the morphology and size of the nanofibers as well as the porosity and thermomechanical properties of the nanocomposite membranes are studied. It is shown that the incorporation of the nanoclay particles with ∼10 nm lateral sizes into the polymer increases the size of the pores by about 80%. To demonstrate the efficiency of the adsorbents, the dye removal rate is investigated as a function of pH, adsorbent dosage, dye concentration, and nanofiller loading. The highest and fastest dye removal occurs for the nanofibrous membranes containing 2 wt % nanofiller, where about 80% of the cationic dye is removed after 15 min. This performance is at least 20% better than the pristine chitosan/poly(vinyl alcohol) membrane. The thermal stability and compression resistance of the nanocomposite membranes are found to be higher than those of the pristine membrane. In addition, reusability studies show that the dye removal performance of this nanocomposite membrane reduces by only about 5% over four cycles. The adsorption kinetics is explained by the Langmuir isotherm model and is expressed by a pseudo-second-order kinetic mechanism that determines a spontaneous chemisorption process. The results of this study provide a valuable perspective on the fabrication of high-performance, reusable, and efficient electrospun fibrous nanocomposite adsorbents.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Green Electrospun Membranes Based on Chitosan/Amino-Functionalized Nanoclay Composite Fibers for Cationic Dye Removal: Synthesis and Kinetic Studies

et al. 2021

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“…9 Since membrane separation serves only for liquid-solid separation, manufacturing a low-cost filter would be more favourable in the AnMBR system in order to reduce the membrane cost. [23][24][25] Thus, low-cost filters have been modified to tune the surface with anti-fouling functional groups to reduce membrane fouling. 26,27 Although achieving a high water flux due to high permeability and larger pore size, low-cost filters are unsuitable for long-term operation because of their low shear and tensile strength.…”

Section: Membrane Characteristicsmentioning

confidence: 99%

A critical review on advanced anaerobic membrane bioreactors (AnMBRs) for wastewater treatment: advanced membrane materials and energy demand

Zarak

Cheng

Tian

2022

Environ. Sci.: Water Res. Technol.

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“…Pulverized coal particles produced by combustion is an important source of air pollution (Cai, Zhang, & Bao, 2018;Shi et al, 2018). Metal fiber felt has been widely used in removing fine particles in the air due to its excellent filtration performance (Mao et al, 2017;Nakamura, Suda, & Matsumoto, 2018;Tian, Qi, Su, Zhou, & Jing, 2016). Besides, it has an ideal uniform pore size distribution and excellent permeability.…”

Section: Introductionmentioning

confidence: 99%

Investigating the filtration behavior of metal fiber felt using CFD-DEM simulation

Liu

Ding

Chen

et al. 2019

Engineering Applications of Computational Fluid Mechanics

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This paper studies the dynamic filtration behavior of coal particles in metal fiber felt, by developing a three-dimensional model based on microstructure and arrangement mode of metal fiber felt identified by scanning electron microscope. Discrete element method (DEM) is coupled with Computational fluid dynamics (CFD) to simulate filtration of coal particles in metal fiber felt. The simulation mainly studies the moving trail and deposition characteristics of spherical coal particles. The results demonstrated that coal particles can bypass the metal fibers and enter the inside of the metal fiber felt through mesh channels. The moving trail of coal particles is similar to a broken line. It is also shown that most coal particles are trapped due to the deep filtration of metal fiber felt and the distribution pattern of them is inhomogeneous. The number of particles trapped by metal fiber felt is reduced in the direction of thickness. It is found that coal particles can be trapped not only by randomly arranged metal fibers, but also by coal particles deposited previously. Finally, the kinetic energy loss of coal particles mainly occurs in the initial stage when particles pass through metal fiber felt. And the velocity of coal particles inside metal fiber felt is maintained at 0.15-0.25 m/s. Highlights • A more realistic three-dimensional model was reconstructed according to scanning electron microscope pictures. • The particle trajectory, deposition mode of particle groups and speed change of particles were investigated using CFD-DEM in the paper. • The simulation method was validated by the experiment.

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Characterization of pore size distribution of non-woven fibrous filter by inscribed sphere within 3D filter model

Cited by 13 publications

References 24 publications

Green Electrospun Membranes Based on Chitosan/Amino-Functionalized Nanoclay Composite Fibers for Cationic Dye Removal: Synthesis and Kinetic Studies

Green Electrospun Membranes Based on Chitosan/Amino-Functionalized Nanoclay Composite Fibers for Cationic Dye Removal: Synthesis and Kinetic Studies

A critical review on advanced anaerobic membrane bioreactors (AnMBRs) for wastewater treatment: advanced membrane materials and energy demand

Investigating the filtration behavior of metal fiber felt using CFD-DEM simulation

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