Effect of irradiation energy and residence time on decomposition efficiency of polycyclic aromatic hydrocarbons (PAHs) from rubber wood combustion emission using soft X-rays

This research aims to investigate the effects of irradiation energy and residence time of soft X-ray irradiation in the decomposition of sixteen polycyclic aromatic hydrocarbons (PAHs) in smoke particles emitted from the Para rubber wood burning. The burning process was carried out in a tube furnace...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2018-11, Vol.210, p.417-423
Main Authors: Chomanee, Jiraporn, Tekasakul, Surajit, Tekasakul, Perapong, Furuuchi, Masami
Format: Article
Language:English
Subjects:
Biomass combustion
Nanoparticles
PAH decomposition
Rubber wood
Soft X-rays
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Summary:This research aims to investigate the effects of irradiation energy and residence time of soft X-ray irradiation in the decomposition of sixteen polycyclic aromatic hydrocarbons (PAHs) in smoke particles emitted from the Para rubber wood burning. The burning process was carried out in a tube furnace and the soft X-ray radiation used had a wave length of 0.13–0.41 nm. The irradiated (IR) and non irradiated (N-IR) smoke particles were collected simultaneously using a 10-stage Andersen sampler equipped with an inertial-filter stage (ANIF), in order to determine the physicochemical characteristic of both IR and N-IR smoke particles, including particle size distribution and concentration, and particle-bound PAHs concentration. Results show that the nano-size smoke particles contained the highest amount of PAHs and of carcinogenic potency equivalent (BaP-TEQ). About 75% of PAH compounds on the total smoke particles were decomposed at the highest irradiation energy. Moreover, 4–6 ring PAHs in nanoparticles (
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2018.07.001