Advances in particulate matter filtration: Materials, performance, and application

Ji, Xuzheng; Huang, Jianying; Teng, Lin; Li, Shuhui; Li, Xiao; Cai, Weilong; Chen, Zhong; Lai, Yuekun

doi:10.1016/j.gee.2022.03.012

Cited by 69 publications

(23 citation statements)

References 190 publications

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“…Given the growing concerns over air pollution and environmental safety, studies of air filtration technologies and applications are actively conducted. , As a cost-effective and quick solution, fibrous filters with tortuous interconnected pores are widely used. − Filter media are comprised of fibers of various sizes ranging from the nanoscale to the microscale . Commonly, low resistance is achieved by large fibers and a low packing density (higher porosity), with low resistance and high efficiency existing in a trade-off relationship. − By understanding the structure–performance relationship, an optimum balance between resistance and efficiency that satisfies performance requirements in a specific use environment can be attained. − …”

Section: Introductionmentioning

confidence: 99%

“…Given the growing concerns over air pollution and environmental safety, studies of air filtration technologies and applications are actively conducted. 1,2 As a cost-effective and quick solution, fibrous filters with tortuous interconnected pores are widely used. 3−5 Filter media are comprised of fibers of various sizes ranging from the nanoscale to the microscale.…”

Section: ■ Introductionmentioning

confidence: 99%

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Computational Modeling of Multiscale Air Filter Media Consisting of Nano- and Microfibers

Lee

Kim

2023

ACS Appl. Nano Mater.

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With regard to air filtration, computational work has been performed to predict filter performance outcomes in different particulate scenarios, yet comparative verification of different modeling methods is rarely studied. In this study, computational simulations with different modeling techniques are demonstrated for filter media with various fiber diameters, thicknesses, and basis weights. For a microscale meltblown (Micro) filter web, a resolved model reconstructed by X-ray micro-computed tomography (Xμ-CT) is generated. The representative volume elements and the number of voxels are determined by examining the simulation accuracy and the computational time. For a multiscale dual-layer web composed of nanofibers (Nano) and microscale spunbond fibers (SB), a parametric model and a porous plane model are generated. The accuracy of the models is verified in terms of the morphological parameters and flow resistance in comparison, with actual test results. The parametric model and porous plane model suitably predict the characteristics of multiscale filter media. Simulated filtration is conducted for particles of different sizes (0.05−1 μm) in an effort to understand the relationships among the filter morphology, face velocity (71 and 142 mm/s), and particle size. This study presents relevant modeling methods, specifically a resolved model, a parametric model, and a porous plane model for virtualizing filter media on various scales. It provides an informative discussion of various modeling parameters for accurate predictions of filtering behaviors with potential applicability to the reverse-engineering of filter products.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Computational Modeling of Multiscale Air Filter Media Consisting of Nano- and Microfibers

Lee

Kim

2023

ACS Appl. Nano Mater.

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“…[18][19][20][21] The pioneering work of Wang et al has led to a series of follow-up studies on the incorporation of MOFs into filtration systems for enhanced PM capture via electrostatic forces. [22][23][24] However, the exposure degree of MOFs remains challenging due to the limited loading process. 22,24 To date, loading MOFs on substrates has mainly included in situ growth, 25,26 mechanical loading, 27,28 binder-assistant binding, 29,30 and electrospinning.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Cu-MOF hollow nanowire modified copper mesh for efficient antibacterial PM filtration

Wang

Ying

et al. 2023

Inorg. Chem. Front.

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“…5 The effective removal of these pollutants is of utmost importance for safeguarding both human health and environmental remediation efforts. [6][7][8] Selective catalytic reduction (SCR), represented by the equation…”

Section: Introductionmentioning

confidence: 99%

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM₂_.5, NO, and toluene

Chen,

Yin,

Tan

et al. 2023

AIChE Journal

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SiC catalytic membranes exhibit remarkable promise in controlling of dust and atmospheric pollutant emissions. However, their fabrication is limited to small‐scale production, with dimensions up to a disc of 30 mm in diameter. Scaling up the fabrication to tubular SiC catalytic membranes without compromising their application performance remains a challenge due to uncontrollable structural defects during processing. Herein, a tubular Co‐SiC (TCS) catalytic membrane was fabricated through a combination of cold‐isostatic‐pressure molding, spin spray‐coating and acid‐treating processes. The TCS catalytic membrane shows high filtration efficiencies toward industrial‐PM2.5 concentrations. A competitive reaction between NO and toluene was observed on TCS catalytic membrane, and the toluene oxidation is prioritized at low temperatures. In a 52 h stability test, the TCS catalytic membrane achieved PM2.5, NO, and toluene removal efficiencies of 98.92%, 70%, and 100%, respectively. This study lays the foundation for the practical implementation of SiC catalytic membranes in industrial emissions treatment.

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Advances in particulate matter filtration: Materials, performance, and application

Cited by 69 publications

References 190 publications

Computational Modeling of Multiscale Air Filter Media Consisting of Nano- and Microfibers

Computational Modeling of Multiscale Air Filter Media Consisting of Nano- and Microfibers

Hierarchical Cu-MOF hollow nanowire modified copper mesh for efficient antibacterial PM filtration

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM₂_.5, NO, and toluene

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Advances in particulate matter filtration: Materials, performance, and application

Cited by 69 publications

References 190 publications

Computational Modeling of Multiscale Air Filter Media Consisting of Nano- and Microfibers

Computational Modeling of Multiscale Air Filter Media Consisting of Nano- and Microfibers

Hierarchical Cu-MOF hollow nanowire modified copper mesh for efficient antibacterial PM filtration

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM2.5, NO, and toluene

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Product

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Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM₂_.5, NO, and toluene