An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration
In this work, we tried to analyze dust loading behavior of polypropylene hollow fiber membranes using average pressure drop models. Hollow fiber membranes varying in fiber diameter were loaded with a standardized test dust to simulate particle-polluted air. We measured pressure drop development of t...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-06-01
|
Series: | Membranes |
Subjects: | |
Online Access: | https://www.mdpi.com/2077-0375/11/7/467 |
id |
doaj-1a14dd0c96ee4e37b84d01bc0b3cf5bc |
---|---|
record_format |
Article |
spelling |
doaj-1a14dd0c96ee4e37b84d01bc0b3cf5bc2021-07-23T13:53:16ZengMDPI AGMembranes2077-03752021-06-011146746710.3390/membranes11070467An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air FiltrationPavel Bulejko0Ondřej Krištof1Miroslav Dohnal2Heat Transfer and Fluid Flow Laboratory, Faculty of Mechanical Engineering, Brno University of Technology, 61669 Brno, Czech RepublicZENA Membranes s.r.o., 62100 Brno, Czech RepublicZENA Membranes s.r.o., 62100 Brno, Czech RepublicIn this work, we tried to analyze dust loading behavior of polypropylene hollow fiber membranes using average pressure drop models. Hollow fiber membranes varying in fiber diameter were loaded with a standardized test dust to simulate particle-polluted air. We measured pressure drop development of the membranes at different flowrates and dust concentrations, and, after each experiment, the dust deposited on the membrane fibers was weighed to obtain dust holding capacity (DHC). The obtained experimental data was analyzed using various average pressure drop models and compared with average pressure drop obtained from pressure drop/dust load dependence using a curve fit. Exponential and polynomial fitting was used and compared. Pressure drop in relation to the dust load followed different trends depending on the experimental conditions and inner fiber diameter. At higher flowrate, the dependence was polynomial no matter what the fiber diameter. However, with higher fiber diameter at lower permeate velocities, the dependence was close to exponential curve and followed similar trends as observed in planar filter media. Dust-holding capacity of the membranes depended on the experimental conditions and was up to 21.4 g. However, higher dust holding capacity was impossible to reach no matter the experiment duration due to self-cleaning ability of the tested membranes.https://www.mdpi.com/2077-0375/11/7/467hollow-fiber membraneair filtrationpressure dropdust-holding capacity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pavel Bulejko Ondřej Krištof Miroslav Dohnal |
spellingShingle |
Pavel Bulejko Ondřej Krištof Miroslav Dohnal An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration Membranes hollow-fiber membrane air filtration pressure drop dust-holding capacity |
author_facet |
Pavel Bulejko Ondřej Krištof Miroslav Dohnal |
author_sort |
Pavel Bulejko |
title |
An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration |
title_short |
An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration |
title_full |
An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration |
title_fullStr |
An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration |
title_full_unstemmed |
An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration |
title_sort |
assessment on average pressure drop and dust-holding capacity of hollow-fiber membranes in air filtration |
publisher |
MDPI AG |
series |
Membranes |
issn |
2077-0375 |
publishDate |
2021-06-01 |
description |
In this work, we tried to analyze dust loading behavior of polypropylene hollow fiber membranes using average pressure drop models. Hollow fiber membranes varying in fiber diameter were loaded with a standardized test dust to simulate particle-polluted air. We measured pressure drop development of the membranes at different flowrates and dust concentrations, and, after each experiment, the dust deposited on the membrane fibers was weighed to obtain dust holding capacity (DHC). The obtained experimental data was analyzed using various average pressure drop models and compared with average pressure drop obtained from pressure drop/dust load dependence using a curve fit. Exponential and polynomial fitting was used and compared. Pressure drop in relation to the dust load followed different trends depending on the experimental conditions and inner fiber diameter. At higher flowrate, the dependence was polynomial no matter what the fiber diameter. However, with higher fiber diameter at lower permeate velocities, the dependence was close to exponential curve and followed similar trends as observed in planar filter media. Dust-holding capacity of the membranes depended on the experimental conditions and was up to 21.4 g. However, higher dust holding capacity was impossible to reach no matter the experiment duration due to self-cleaning ability of the tested membranes. |
topic |
hollow-fiber membrane air filtration pressure drop dust-holding capacity |
url |
https://www.mdpi.com/2077-0375/11/7/467 |
work_keys_str_mv |
AT pavelbulejko anassessmentonaveragepressuredropanddustholdingcapacityofhollowfibermembranesinairfiltration AT ondrejkristof anassessmentonaveragepressuredropanddustholdingcapacityofhollowfibermembranesinairfiltration AT miroslavdohnal anassessmentonaveragepressuredropanddustholdingcapacityofhollowfibermembranesinairfiltration AT pavelbulejko assessmentonaveragepressuredropanddustholdingcapacityofhollowfibermembranesinairfiltration AT ondrejkristof assessmentonaveragepressuredropanddustholdingcapacityofhollowfibermembranesinairfiltration AT miroslavdohnal assessmentonaveragepressuredropanddustholdingcapacityofhollowfibermembranesinairfiltration |
_version_ |
1721287121485955072 |