Measurement and simulation of indoor radon concentration distribution in students’ residential hostels around Ladoke Akintola University of Technology, Ogbomoso, Nigeria

Authors

  • E. A. Oni
    Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
    https://orcid.org/0000-0001-6499-1593
  • C. O. Ajiboye
    Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
  • P. S. Ayanlola
    Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
  • O. O. Oloyede
    Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
  • A. A. Aremu
    Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
  • T. A. Olajide
    Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
  • O. O. Oladapo
    Department of Science Laboratory Technology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
  • O. P. Oyero
    Department of Physics, Adeleke University Ede, Nigeria
  • A. E. Oladipo
    Department of Physics, Bowen University Iwo, Osun State, Nigeria
  • M. K. Lawal
    Department of Science Laboratory Technology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

Keywords:

Indoor radon, Air change rate, Annual absorbed dose, Annual effective dose, Radon monitoring

Abstract

Radon is a harmful gas and class I carcinogen posing global challenge to human health. Being an inert gas, it is impossible to perceive its presence by any of the sense organs, thus the application of Computational Fluid Dynamics (CFD) simulation in radon study is enhancing human understanding of the behavior and distribution of radon in indoor air. Hence, this work measured the indoor radon concentration (Ri) in student’s residential hostels and evaluate radon gas distribution in indoor air. In-situ measurement of the Ri in 10 student’s residential hostels was carried for a period of one month using RAD7. The CFD code ANSYS Fluent 2024R2, based on the finite volume method was employed in modeling the geometry of the student’s room, calculate, predict and visualize the concentration and distribution of radon inside the room. The average measured Ri was 45.89 Bq/m3 with a corresponding annual effective dose of 1.042 mSv/yr. The simulation revealed an average value of 45.51 Bq/m3 and the annual effective dose from the inhalation of radon when ACH is 2, 3 and 4 h-1 respectively was calculated to be 1.03 mSv/yr, which is lower than the recommended value by ICRP. The simulation revealed that radon gas is more concentrated at the building window compare to other parts of the building. It is therefore recommended that the indoor radon induced air be diffused with external or fresh air by ensuring adequate ventilation and maintaining healthy air circulation.

Dimensions

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Published

2025-09-07

How to Cite

Measurement and simulation of indoor radon concentration distribution in students’ residential hostels around Ladoke Akintola University of Technology, Ogbomoso, Nigeria. (2025). African Scientific Reports, 4(3), 328. https://doi.org/10.46481/asr.2025.4.3.328

Issue

Volume 4, Issue 3, December 2025

Section

PHYSICS SECTION
Copyright & Licensing

Copyright (c) 2025 E. A. Oni, C. O. Ajiboye, P. S. Ayanlola, O. O. Oloyede, A. A. Aremu, T. A. Olajide, O. O. Oladapo, O. P. Oyero, A. E. Oladipo, M. K. Lawal

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Measurement and simulation of indoor radon concentration distribution in students’ residential hostels around Ladoke Akintola University of Technology, Ogbomoso, Nigeria. (2025). African Scientific Reports, 4(3), 328. https://doi.org/10.46481/asr.2025.4.3.328

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