Preprint Article Version 1 This version is not peer-reviewed

Morphology and Elemental Analysis of Freshly Emitted Particles from Packed-bed Domestic Coal Combustion

Version 1 : Received: 27 November 2019 / Approved: 28 November 2019 / Online: 28 November 2019 (12:05:34 CET)

How to cite: Masekameni, M.D.; Makonese, T.; Rampedi, I.T. Morphology and Elemental Analysis of Freshly Emitted Particles from Packed-bed Domestic Coal Combustion. Preprints 2019, 2019110363 (doi: 10.20944/preprints201911.0363.v1). Masekameni, M.D.; Makonese, T.; Rampedi, I.T. Morphology and Elemental Analysis of Freshly Emitted Particles from Packed-bed Domestic Coal Combustion. Preprints 2019, 2019110363 (doi: 10.20944/preprints201911.0363.v1).

Abstract

This study was conducted in a laboratory-controlled environment aiming at studying the physical properties and elemental composition of coal combustion particles in a brazier. Particles were sampled ~1 m above the stove using a partector, where particles were collected on gold Transmission Electron Microscopy (TEM) grids and polycarbonate filters for TEM and inductively coupled plasma mass spectrometry (ICP-MS) analysis, respectively. Particles for elemental analysis collected on a 37 µm polycarbonate filters whereby a Gillian pump was used to draw in air. During sampling, a 2.5 µm cyclone was attached to the sampling cassette to isolate larger particles. The results have shown that combustion particles emitted during the early stage of combustion where single spherical particles with a diameter of around 450 nm. As the combustion progresses, the particle diameter gradually decreases and the morphology changes to accretion chain and fluffy bead structure for the flaming and char-burning phase, respectively.

Subject Areas

physical properties; tem, icp-ms; elemental composition

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