Thesis-1975-Davies.pdf (7.18 MB)

The physical separation of particulates

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thesis
posted on 25.10.2018, 15:57 by Reginald Davies
Particulates are present in the atmosphere as a result of both natural and man-made processes. Typical particulates include windblown soil, sea salt, sulphur, nitr0gen and hydrocarbon complexes, ammonium sulphate and nitrate, carbonaceous matter, biological debris, metal oxides, trace metals, and extra-terrestrial magnetic and radioactive compounds. Natural processes such as cloud formation, rainfall, and sedimentation cleanse the atmosphere of these particulates and, in so doing, form particle groups or agglomerates which can contain many unit particles. For the purpose of atmospheric research and, in particular, the physical tracing of pollution sources, particulates are a useful emission indicator. Consequently, if one wishes to use them effectively, it is necessary to separate the agglomerate into its independent particle units prior to analysis and identification. This is no simple matter, as the particles are held together by strong physical forces. The purpose of this thesis is to investigate a method of separating particulates for physical tracer studies, but the atmospheric aerosol was considered too complex a model for the initial studies. [Continues.]

Funding

United States Air Force (contract no.: F33657-71-C-0859).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Publisher

© R. Davies

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

1975

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.

Language

en

Exports

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Keywords

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