Publication detail

Air filtration performance of symmetric polypropylene hollow-fibre membranes for nanoparticle removal

BULEJKO, P. DOHNAL, M. POSPÍŠIL, J. SVĚRÁK, T.

Original Title

Air filtration performance of symmetric polypropylene hollow-fibre membranes for nanoparticle removal

English Title

Air filtration performance of symmetric polypropylene hollow-fibre membranes for nanoparticle removal

Type

journal article

Language

en

Original Abstract

This work aimed to determine filtration performance of polypropylene hollow-fibre membranes (HFMs) for removing submicron particles from air. Experiments were performed in a glass chamber supplied with a nanoaerosol particles formed by burning incense sticks. Three types of HFMs varying in packing density, active filtration area and pore-size distribution were tested in an outside-in configuration. By measuring the number of particles upstream and downstream of the HFM, the filtration efficiency was determined. Three permeate velocities (5, 10 and 15 cm/s) were used to compare the velocity effect on filtration efficiency. Particle counting was carried out using a TSI 3075 condensation particle counter connected to a TSI 3080 scanning mobility particle sizer in 48 particle size channels from 18.1 to 100 nm. The results show high efficiency, mostly higher than 99% for particles above 60 nm size. The most penetrating particle sizes (MPPS) were between 35.9 and 40 nm at 5 cm/s with an efficiency of 82–86%. At permeate velocity of 10 and 15 cm/s, MPPS slightly decreased to range of 34.6–40 nm, with efficiency decreasing to 72–84% and 69–83%, respectively. The quality factor of HFMs was within the 2 to 28 kPa−1 range.

English abstract

This work aimed to determine filtration performance of polypropylene hollow-fibre membranes (HFMs) for removing submicron particles from air. Experiments were performed in a glass chamber supplied with a nanoaerosol particles formed by burning incense sticks. Three types of HFMs varying in packing density, active filtration area and pore-size distribution were tested in an outside-in configuration. By measuring the number of particles upstream and downstream of the HFM, the filtration efficiency was determined. Three permeate velocities (5, 10 and 15 cm/s) were used to compare the velocity effect on filtration efficiency. Particle counting was carried out using a TSI 3075 condensation particle counter connected to a TSI 3080 scanning mobility particle sizer in 48 particle size channels from 18.1 to 100 nm. The results show high efficiency, mostly higher than 99% for particles above 60 nm size. The most penetrating particle sizes (MPPS) were between 35.9 and 40 nm at 5 cm/s with an efficiency of 82–86%. At permeate velocity of 10 and 15 cm/s, MPPS slightly decreased to range of 34.6–40 nm, with efficiency decreasing to 72–84% and 69–83%, respectively. The quality factor of HFMs was within the 2 to 28 kPa−1 range.

Keywords

Hollow-fibre membrane; Filtration efficiency; Pressure drop; Nanoaerosol

Released

31.05.2018

Publisher

Elsevier

Location

Amsterdam

Pages from

122

Pages to

128

Pages count

7

URL

BibTex


@article{BUT142780,
  author="Pavel {Bulejko} and Mirko {Dohnal} and Jiří {Pospíšil} and Tomáš {Svěrák}",
  title="Air filtration performance of symmetric polypropylene hollow-fibre membranes for nanoparticle removal",
  annote="This work aimed to determine filtration performance of polypropylene hollow-fibre membranes (HFMs) for
removing submicron particles from air. Experiments were performed in a glass chamber supplied with a
nanoaerosol particles formed by burning incense sticks. Three types of HFMs varying in packing density,
active filtration area and pore-size distribution were tested in an outside-in configuration. By measuring the
number of particles upstream and downstream of the HFM, the filtration efficiency was determined. Three
permeate velocities (5, 10 and 15 cm/s) were used to compare the velocity effect on filtration efficiency.
Particle counting was carried out using a TSI 3075 condensation particle counter connected to a TSI 3080
scanning mobility particle sizer in 48 particle size channels from 18.1 to 100 nm. The results show high
efficiency, mostly higher than 99% for particles above 60 nm size. The most penetrating particle sizes
(MPPS) were between 35.9 and 40 nm at 5 cm/s with an efficiency of 82–86%. At permeate velocity of 10
and 15 cm/s, MPPS slightly decreased to range of 34.6–40 nm, with efficiency decreasing to 72–84% and
69–83%, respectively. The quality factor of HFMs was within the 2 to 28 kPa−1 range.",
  address="Elsevier",
  chapter="142780",
  doi="10.1016/j.seppur.2017.12.056",
  howpublished="print",
  institution="Elsevier",
  number="1",
  volume="197",
  year="2018",
  month="may",
  pages="122--128",
  publisher="Elsevier",
  type="journal article"
}