Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/60946
Title: Experimental investigation of backpulse and backblow cleaning of nanofiber filter loaded with nano-aerosols
Authors: Hau, CWY
Leung, WWF 
Keywords: Air filtration
Backblow cleaning
Backpulse cleaning
Cake filtration
Depth filtration
Loaded filter
Nano-aerosols
Nanofiber filter
Issue Date: 2016
Publisher: Pergamon Press
Source: Separation and purification technology, 2016, v. 163, p. 30-38 How to cite?
Journal: Separation and purification technology 
Abstract: Nanofibrous filter have been proven effective to remove nano-aerosols with size less than 100 nm. Cleaning is required after long-term use; however, very little has been published on the subject. An experimental investigation has been launched to determine backpulse, backblow and combined backpulse-backblow on cleaning of a loaded nanofiber filter. Nylon 6 nanofiber filters were loaded with polydispersed NaCl particles, 60% < 100 nm and 90% < 160 nm, generated from an aerosol generator. Air jets in form of backpulse, backblow and their combined mode were used to clean a loaded filter. During cleaning, the filter cake was removed first for which the pressure drop across the loaded filter decreased rapidly, followed by loosely attached aerosols in the filter being removed with finite pressure drop reduction at a reasonable rate, ending in the final stage for which much lesser aerosols were being removed. Ultimately, the filter reached a residual pressure drop which was higher than that of the initial clean filter indicating residual aerosols were trapped both in the cake heel and filter. Backpulse has been found to be more effective in removing the cake from the filter surface, whereas backblow provides an added advantage of removing by convection of the detached aerosols away from the filter preventing recapture. The synergistic combination of backpulse-backblow provides the best cleaning performance of a nanofibrous filter loaded with nano-aerosols.
URI: http://hdl.handle.net/10397/60946
ISSN: 1383-5866
EISSN: 1873-3794
DOI: 10.1016/j.seppur.2016.02.041
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

1
Last Week
0
Last month
Citations as of Sep 15, 2017

WEB OF SCIENCETM
Citations

1
Last Week
0
Last month
Citations as of Sep 14, 2017

Page view(s)

15
Last Week
1
Last month
Checked on Sep 18, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.