Accession Number : ADA192149

Title :   Chemical Effects in Particulate Filtration. 2. Observations on Particle Loss.

Descriptive Note : Technical note,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Coleman, John R

PDF Url : ADA192149

Report Date : Jul 1987

Pagination or Media Count : 23

Abstract : As part of a program of filter testing, monodisperse aerosols ranging in size from 0.01 to 0.30 micrometers were prepared from seventeen materials. With particles of a few hundredths of a micron diameter, losses in the test system lines were frequently much larger than expected, and varied greatly from one material to another. There was no obvious correlation between the magnitude of the effect and the chemical nature of the aerosol. These abnormal losses were greatly reduced or eliminated when the aerosol was passed through a neutralizer, which removed most of the particle charge in this size range. A more systematic study of the phenomenon should be made, with a system designed expressly for the purpose.

Descriptors :   *AEROSOLS, *FILTERS, ABNORMALITIES, CANADA, CHEMICALS, FILTRATION, LOSSES, PARTICLES, PARTICULATES, TEST AND EVALUATION, PENETRATION, CHARGED PARTICLES, PARTICLE SIZE, NEUTRALIZATION

Subject Categories : Physical Chemistry
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE