Publication detail

Air filtration using hollow-fibre membranes for nanoparticle removal

BULEJKO, P. DOHNAL, M. POSPÍŠIL, J. KRIŠTOF, O. SVĚRÁK, T. KEJÍK, P.

Original Title

Air filtration using hollow-fibre membranes for nanoparticle removal

English Title

Air filtration using hollow-fibre membranes for nanoparticle removal

Type

conference paper

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 polydisperse submicrometric size aerosol. Two types of HFMs varying in packing density, active filtration area and pore-size distribution were tested in outside-in configuration in suction mode. By measuring the number of particles upstream and downstream of the HFM, the filtration efficiency was determined. Three air flow 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 64 particle size channels from 16.8 to 572.5 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 efficiency of 82–86%. However, with twofold airflow velocity, MPPS decreased with efficiency decreasing to values of 72–84% and down to 69–83% at 15 cm/s. Quality factor of HFMs was in range of 0.003 to 0.028 Pa−1.

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 polydisperse submicrometric size aerosol. Two types of HFMs varying in packing density, active filtration area and pore-size distribution were tested in outside-in configuration in suction mode. By measuring the number of particles upstream and downstream of the HFM, the filtration efficiency was determined. Three air flow 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 64 particle size channels from 16.8 to 572.5 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 efficiency of 82–86%. However, with twofold airflow velocity, MPPS decreased with efficiency decreasing to values of 72–84% and down to 69–83% at 15 cm/s. Quality factor of HFMs was in range of 0.003 to 0.028 Pa−1.

Keywords

Hollow-fibre membrane, filtration efficiency, pressure drop, submicron particles

Released

12.03.2018

ISBN

978-3-941655-15-7

Book

FILTECH 2018, March 13-15, Cologne – Germany

Pages from

1

Pages to

12

Pages count

12

BibTex


@inproceedings{BUT146651,
  author="Pavel {Bulejko} and Mirko {Dohnal} and Jiří {Pospíšil} and Ondřej {Krištof} and Tomáš {Svěrák} and Pavel {Kejík}",
  title="Air filtration using 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 polydisperse submicrometric size aerosol. Two types of HFMs varying in packing
density, active filtration area and pore-size distribution were tested in outside-in configuration in
suction mode. By measuring the number of particles upstream and downstream of the HFM, the
filtration efficiency was determined. Three air flow 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 64
particle size channels from 16.8 to 572.5 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 efficiency of 82–86%. However, with twofold airflow velocity, MPPS
decreased with efficiency decreasing to values of 72–84% and down to 69–83% at 15 cm/s. Quality
factor of HFMs was in range of 0.003 to 0.028 Pa−1.",
  booktitle="FILTECH 2018, March 13-15, Cologne – Germany",
  chapter="146651",
  howpublished="electronic, physical medium",
  year="2018",
  month="march",
  pages="1--12",
  type="conference paper"
}