Deliquescence- and efflorescence-behaviour of hygroscopic salt particles in non-hygroscopic dust cakes

D. Horst*, Q. Zhang, E. Schmidt, University of Wuppertal, Germany

Salt particles are natural components of ambient aerosols and also are typically used in laboratory test standards for filter loading tests. Hence, the deliquescence and efflorescence behaviour of hygroscopic salt particles is well known and can be described by different thermodynamical models as long as the particles can be assumed as isolated single particles. Investigations on the influence of particle-particle and particle-wall contacts on this process are notable by their absence. As part of a dust cake salt particles can affect the operating behaviour of surface filters dependent on the gas humidity. For this reason the study of the deliquescence and efflorescence process of hygroscopic salt particles in contact with non-hygroscopic particles of a dust cake is appropriate.

The focus of this research is to understand and to describe the deliquescence and efflorescence phenomena of hygroscopic salt particles in contact with fiber material and/or non-hygroscopic particles of a dust cake....

Session: G10 - Short Oral + Poster Presentations I
Day: 14 March 2018
Time: 14:45 - 16:45 h

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