Přístupnostní navigace
E-application
Search Search Close
Publication detail
BULEJKO, P. SVĚRÁK, T. KRIŠTOF, O. DOHNAL, M. ONDRÁČEK, J.
Original Title
Aerosol separation efficiency and pressure drop evolution with intense particle loading of hollow-fiber membranes
Type
abstract
Language
English
Original Abstract
Hollow-fiber membranes (HFMs) have been widely applied to many liquid treatment applications such as wastewater treatment, membrane contactors/bioreactors and membrane distillation. Despite the fact that HFMs are widely used for gas separation from gas mixtures, their use for mechanical filtration of aerosols is very scarce. This work aimed to study filtration performance of polypropylene HFMs of different filtration area challenged with various submicron size aerosols (a monodisperse ammonium sulfate, TiO2, a nanoaerosol generated from incense stick burning). Size-resolved penetration was measured at different airflow velocities in both outside/in and inside/out arrangement. Pressure drop evolution with long term dust loading was measured until double the value of initial pressure drop with an A2 ASHRAE dust. The results show very high efficiency for submicron particles (Fig. 1). Pressure drops are rather higher due to hollow fiber geometry strongly dependent on inner fiber diameter. Long-term loading by the A2 dust shows very slow pressure drop increase even with very high dust concentrations. HFM reaches the final pressure drop (double the initial value) after 30 hours of loading with 14 g/m3 of dust. Furthermore, the results have shown very simple regeneration of the membrane using vibrations. After shaking the membrane, the initial pressure drop was obtained with practically no residual resistance.
Keywords
Hollow-fiber membrane, aerosol, air filtration, pressure drop, dust loading
Authors
BULEJKO, P.; SVĚRÁK, T.; KRIŠTOF, O.; DOHNAL, M.; ONDRÁČEK, J.
Released
29. 8. 2018
Pages from
1
Pages to
Pages count
BibTex
@misc{BUT150461, author="BULEJKO, P. and SVĚRÁK, T. and KRIŠTOF, O. and DOHNAL, M. and ONDRÁČEK, J.", title="Aerosol separation efficiency and pressure drop evolution with intense particle loading of hollow-fiber membranes", booktitle="23rd International Congress of Chemical and Process Engineering CHISA 2018 Prague", year="2018", pages="1--1", note="abstract" }