Farida Lolila  This email address is being protected from spambots. You need JavaScript enabled to view it.1, Mohamed S. Mazunga1, Ntombizikhona B. Ndabeni2,3 

1 Department of Physics, University of Dar es Salaam, P.O. Box 35063, Dar es Salaam, Tanzania
2 Department of Subatomic Physics, iThemba LABS, P.O. Box 722, Somerset West 7129, South Africa
3 Department of Physics, University of Cape Town, Rondebosch, 7700, South Africa


Received: May 17, 2022
Revised: September 23, 2022
Accepted: October 8, 2022

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.4209/aaqr.220214  

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Cite this article:

Lolila, F., Mazunga, M.S., Ndabeni, N.B. (2022). Demarcation of Pollution-Prone Areas around the Manyoni Uranium Project, Tanzania. Aerosol Air Qual. Res. 22, 220214. https://doi.org/10.4209/aaqr.220214


HIGHLIGHTS 

  • Areas prone to PM10 pollution were demarcated by AERMOD.
  • Areas with mean annual PM10 concentrations exceeding 20 µg m–3 were predicted.
  • Knowing pollution-prone areas before mining can help in protecting the environment.
 

ABSTRACT


This study employed PM10 source parameters and pre-processed topographical and meteorological data as input into the AERMOD atmospheric dispersion model to demarcate pollution-prone areas around the Manyoni Uranium Project. Knowing these areas before mining is an important step toward establishing efficient and effective environmental baseline data. This is because resources for collecting the data will be concentrated in areas with higher contamination potential. In this regard, AERMOD predicted that the regions suitable for pollution demarcation would be 25.55 km2, 25.85 km2, and 27.96 km2 if the prospective mine at Playa C1 operated for 5, 7, and 10 years, respectively. Within the demarcated areas, AERMOD predicted that the maximum annual ground level concentration of PM10 averaged over 5, 7, and 10 years would be 22.2 µg m–3, 22.8 µg m–3, and 25.7 µg m–3, respectively. These values are 11%, 14%, and 28.5% higher than the WHO annual limit of 20 µg m–3 for PM10. This information can help mine owners and government agencies figure out ways to protect people and the environment from the expected pollution.


Keywords: AERMOD, Uranium mining, Emission factors, Baseline data, PM10




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