10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Filtrationof Liquid Aerosol on Fibrous Filters Modified with Silica Aerogel - Experimental and Modeling Study
JAKUB GAC, Bartosz Nowak, Marta Bojarska, Warsaw University of Technology
Abstract Number: 241 Working Group: Control and Mitigation
Abstract Removal of liquid droplets from gas flow is one of the most important process in many industrial processes (i.e. gas processing) environmental protection (air cleaning). One of the most efficient method to manage it is a filtration of a fibrous filters. For a last decade some methods of additional improvement filtration efficiency on such filters are investigated.
In our work we propose the modification of filters by covering their fiber with silica aerogels. These aerogels are material characterised by very high porosity, low density and extremely oleofilic properties. In our study they are obtained by means of sol-gel process. Last stage of this process is conducted in the presence of fibrous filter what causes the deposition of aerogel on fibers of this filter.
Our investigations show that such a filter has much greater efficiency than unmodified one. One of the reason us a presence of aerogel structures which act as additive collectors. The other effect is good sorprive properties of aerogel in respect to oil.
The experimental findings are confirmed with results of modeling of oil droplet filtration of single fiber covered by aerogel structure.