Electrospun nanofiber from various source of expanded polystyrene (EPS) waste and their characterization as potential air filter media

Rajak, Abdul; Hapidin, Dian Ahmad; Iskandar, Ferry; Munir, Muhammad Miftahul; Khairurrijal, Khairurrijal

doi:10.1016/j.wasman.2019.12.017

Cited by 80 publications

(47 citation statements)

References 53 publications

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“…The filter thickness can be controlled by the time of collection of the fiber and the distance between the needle and the collector [34,40,[57][58][59]. In this sense, the thickness must be controlled so as not to compromise the air filtration process, that is, the collection efficiency of the nanoparticles and the filter pressure drop [58]. In the present study, it was observed that the produced filter media had slightly different thicknesses (see in Table 2); for all samples, the collection time was 6 h and the distance from the needle to the collector was 10 cm.…”

Section: Characterization Of Microfibersmentioning

confidence: 99%

A Sustainable Recycling Alternative: Electrospun PET-Membranes for Air Nanofiltration

et al. 2021

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Currently, the inappropriate disposal of plastic materials, such as polyethylene terephthalate (PET) wastes, is a major environmental problem since it can cause serious damage to the environment and contribute to the proliferation of pathogenic microorganisms. To reduce this accumulation, PET-type bottles have been recycled, and also explored in other applications such as the development of membranes. Thus, this research aims to develop electrospun microfiber membranes from PET wastes and evaluate their use as an air filter media. The solution concentrations varied from 20 to 12% wt% of PET wastes, which caused a reduction of the average fiber diameter by 60% (from 3.25 µm to 1.27 µm). The electrospun filter membranes showed high mechanical resistance (4 MPa), adequate permeability (4.4 × 10−8 m2), high porosity (96%), and provided a high collection efficiency (about 100%) and low-pressure drop (212 Pa, whose face velocity was 4.8 cm/s) for the removal of viable aerosol nanoparticles. It can include bacteria, fungi, and also viruses, mainly SARS-CoV-2 (about 100 nm). Therefore, the developed electrospun membranes can be applied as indoor air filters, where extremely clean air is needed (e.g., hospitals, clean zones of pharmaceutical and food industry, aircraft, among others).

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Section: Characterization Of Microfibersmentioning

confidence: 99%

A Sustainable Recycling Alternative: Electrospun PET-Membranes for Air Nanofiltration

et al. 2021

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“…[13,[55][56][57][58][59][60] Furthermore, expanded polystyrene (EPS) waste was successfully used for the production of air filters by electrospinning. [61] In addition to the material type and additives, which can be used to functionalize the formed fibers, [12] process variables such as applied voltage, flow rate, type of collector, and distance between needle tip and collector were adjusted to tailor the final fiber properties such as diameter, length, porosity, pore size, and morphology. [62] For instance, uniform polymeric PBI nanofiber filters were obtained by electrospinning with a single solvent, see Figure 4b, [51] whereas the usage of a mixed solvent system allows producing polymer-rich and polymer-lean phases within the fiber, resulting in porous bead-on-string PLA fiber filters, as shown in Figure 4c.…”

Section: Electrospinningmentioning

confidence: 99%

Review on Polymeric, Inorganic, and Composite Materials for Air Filters: From Processing to Properties

Henning

Abdullayev

Vakifahmetoğlu

et al. 2021

Adv Energy and Sustain Res

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Particulate and gaseous air pollutants pose a threat to human health and contribute to climate change. By today, air filters, stationary and portable, are markedly improved and can often provide innocuous air pollution levels. After introducing the classification and standards on air filters, the influence of the processing route and its parameters on the resulting air filter properties and consequently its performance are discussed. Numerous tools are presented to adjust structural properties such as fiber or pore diameter, specific surface area, surface charge, hydrophilicity, or photocatalytic activity to achieve the desired performance in terms of high filtration efficiencies, sufficient mechanical stability, regeneration eligibility, antimicrobial and optical properties. In particular, inorganic and composite materials as well as nonfibrous structures are covered, which are currently holding an outsider position in an air filter community dominated by polymeric materials and fibrous structures.

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“…Although the samples from NFM10 to NFM16 have the equivalent basis weight, they displayed different pressure drops resulting from the change in the packing density (Figure 3b). The trade-off parameter between the pressure drop and filtration efficiency, known as quality factor (QF), was used to evaluate the overall filtration performance (22,23). The QF was calculated by the formula as follows:…”

Section: Characterizationmentioning

confidence: 99%

Multilayer-structured fibrous membrane with directional moisture transportability and thermal radiation for high-performance air filtration

Yang

Cheng

et al. 2020

E-Polymers

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AbstractThe demand of high-performance filter media for the face masks is urgent nowadays due to the severe air pollution. Herein, a highly breathable and thermal comfort membrane that combines the asymmetrically superwettable skin layer with the nanofibrous membrane has been fabricated via successive electrospinning and electrospraying technologies. Thanks to high porosity, interconnected pore structure, and across-thickness wettability gradient, the composite membrane with a low basis weight of 3.0 g m−2 exhibits a good air permeability of 278 mm s−1, a comparable water vapor permeability difference of 3.61 kg m−2 d−1, a high filtration efficiency of 99.3%, a low pressure drop of 64 Pa, and a favorable quality factor of 0.1089 Pa−1, which are better than those of the commercial polypropylene. Moreover, the multilayer-structured membrane displays a modest infrared transmittance of 92.1% that can keep the human face cool and comfort. This composite fibrous medium is expected to protect humans from PM2.5 and keep them comfortable even in a hygrothermal environment.

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Electrospun nanofiber from various source of expanded polystyrene (EPS) waste and their characterization as potential air filter media

Cited by 80 publications

References 53 publications

A Sustainable Recycling Alternative: Electrospun PET-Membranes for Air Nanofiltration

A Sustainable Recycling Alternative: Electrospun PET-Membranes for Air Nanofiltration

Review on Polymeric, Inorganic, and Composite Materials for Air Filters: From Processing to Properties

Multilayer-structured fibrous membrane with directional moisture transportability and thermal radiation for high-performance air filtration

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