Radionuclide fluxes at a plant manufacturing dicalcium phosphate for domestic animals
(2001) In Journal of Environmental Radioactivity 54(1). p.61-73- Abstract
- We have studied a phosphate rock plant which produces dicalcium phosphate (DCP), used as a source of calcium and phosphorus for domestic animals. A by-product in the manufacturing process is calcium chloride which is used in the oil industry, the food industry and as road-salt. The objectives of our study were to describe the fluxes of radionuclides from the U-238 decay series and to estimate the radiation doses to workers at the plant. The radionuclides in the phosphate rock were found to be in secular radioactive equilibrium with U-238, With an average activity concentration of 837 Bq kg(-1). Separation and concentration processes were observed at different stages in the plant. Most of the Ra-226 was found in the calcium chloride, while... (More)
- We have studied a phosphate rock plant which produces dicalcium phosphate (DCP), used as a source of calcium and phosphorus for domestic animals. A by-product in the manufacturing process is calcium chloride which is used in the oil industry, the food industry and as road-salt. The objectives of our study were to describe the fluxes of radionuclides from the U-238 decay series and to estimate the radiation doses to workers at the plant. The radionuclides in the phosphate rock were found to be in secular radioactive equilibrium with U-238, With an average activity concentration of 837 Bq kg(-1). Separation and concentration processes were observed at different stages in the plant. Most of the Ra-226 was found in the calcium chloride, while the major part of the U-238, about 950 Bq kg(-1), was found in the dicalcium phosphate. The annual occupational effective dose to the workers was found to be below the 1 mSv limit recommended by ICRP (1991a) for the public. This study has shown a good example of an important non-nuclear industry with a high input of natural radionuclides with several conceivable pathways to man. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1119569
- author
- Gäfvert, Torbjörn LU ; Holm, Elis LU and Roos, Per LU
- organization
- publishing date
- 2001
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Calcium chloride, Dicalcium phosphate, Phosphate industry, Natural radioactivity
- in
- Journal of Environmental Radioactivity
- volume
- 54
- issue
- 1
- pages
- 61 - 73
- publisher
- Elsevier
- external identifiers
-
- wos:000167046600005
- scopus:0035185776
- ISSN
- 1879-1700
- DOI
- 10.1016/S0265-931X(00)00166-1
- language
- English
- LU publication?
- yes
- id
- 783a5a11-c284-45f1-acaf-f8bdb9041304 (old id 1119569)
- date added to LUP
- 2016-04-01 12:30:20
- date last changed
- 2025-10-14 09:57:51
@article{783a5a11-c284-45f1-acaf-f8bdb9041304,
abstract = {{We have studied a phosphate rock plant which produces dicalcium phosphate (DCP), used as a source of calcium and phosphorus for domestic animals. A by-product in the manufacturing process is calcium chloride which is used in the oil industry, the food industry and as road-salt. The objectives of our study were to describe the fluxes of radionuclides from the U-238 decay series and to estimate the radiation doses to workers at the plant. The radionuclides in the phosphate rock were found to be in secular radioactive equilibrium with U-238, With an average activity concentration of 837 Bq kg(-1). Separation and concentration processes were observed at different stages in the plant. Most of the Ra-226 was found in the calcium chloride, while the major part of the U-238, about 950 Bq kg(-1), was found in the dicalcium phosphate. The annual occupational effective dose to the workers was found to be below the 1 mSv limit recommended by ICRP (1991a) for the public. This study has shown a good example of an important non-nuclear industry with a high input of natural radionuclides with several conceivable pathways to man.}},
author = {{Gäfvert, Torbjörn and Holm, Elis and Roos, Per}},
issn = {{1879-1700}},
keywords = {{Calcium chloride; Dicalcium phosphate; Phosphate industry; Natural radioactivity}},
language = {{eng}},
number = {{1}},
pages = {{61--73}},
publisher = {{Elsevier}},
series = {{Journal of Environmental Radioactivity}},
title = {{Radionuclide fluxes at a plant manufacturing dicalcium phosphate for domestic animals}},
url = {{http://dx.doi.org/10.1016/S0265-931X(00)00166-1}},
doi = {{10.1016/S0265-931X(00)00166-1}},
volume = {{54}},
year = {{2001}},
}