Authors :
Dr. Ahmed A. Bekair; Dr. Ashraf A. El-Shennawy
Volume/Issue :
Volume 7 - 2022, Issue 10 - October
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3ExjcQs
DOI :
https://doi.org/10.5281/zenodo.7184142
Abstract :
-Radionuclide concentrations in phosphate
sediments have always been higher than normal. Using a
gamma ray spectrometer's Multi-Channel Analyzer
(MCA), radionuclides from phosphate ore are
redistributed throughout the environment through the
production and enrichment of phosphogypsum and
phosphatic acid. Dose evaluation and radiological effects
were measured in each of the Nile Valley's sedimentary
phosphate ores, domestic phosphoric acid, and insoluble
calcium sulfate wastes precipitated during the primary
raw materials for the production of phosphatic fertilizers
have always been phosphate sediments and phosphatic
acid. For Nile Valley low grade phosphate sediment,
phosphoric acid, and insoluble calcium, natural
radionuclides from the thorium and uranium series,
radium equivalent activity (Raeq), external and internal
hazards index (Hex&Hin), radioactivity level index
(Gamma index) (I), alpha index (I), gamma-absorbed
dose rate (DEx), exposure rate (ER), and annual effective
dose equivalent (AEDE) were all calculated. East
Sebaiya phosphate sediments are suitable for
agricultural phosphatic fertilizers due to their high
hazards indices. The total annual effective dose
equivalent (AEDE) was the only exception, registering
2.96 mSvy-1
indoors and 0.74 mSvy-1
outdoors. The
exposure rate (ER) was found to be higher than the
world's permissible standard because of the waste's
extremely high specific activity for the naturally
occurring 226Ra radionuclide. This necessitated specific
radiological risk management measures.
Keywords:-Phosphate sediment; phosphoric acid;
Radionuclides; Radiological effects; Thorium; Uranium;
gamma ray spectroscopy; radiation hazard indices;
Radioactivity; agriculture fertilizer.
-Radionuclide concentrations in phosphate
sediments have always been higher than normal. Using a
gamma ray spectrometer's Multi-Channel Analyzer
(MCA), radionuclides from phosphate ore are
redistributed throughout the environment through the
production and enrichment of phosphogypsum and
phosphatic acid. Dose evaluation and radiological effects
were measured in each of the Nile Valley's sedimentary
phosphate ores, domestic phosphoric acid, and insoluble
calcium sulfate wastes precipitated during the primary
raw materials for the production of phosphatic fertilizers
have always been phosphate sediments and phosphatic
acid. For Nile Valley low grade phosphate sediment,
phosphoric acid, and insoluble calcium, natural
radionuclides from the thorium and uranium series,
radium equivalent activity (Raeq), external and internal
hazards index (Hex&Hin), radioactivity level index
(Gamma index) (I), alpha index (I), gamma-absorbed
dose rate (DEx), exposure rate (ER), and annual effective
dose equivalent (AEDE) were all calculated. East
Sebaiya phosphate sediments are suitable for
agricultural phosphatic fertilizers due to their high
hazards indices. The total annual effective dose
equivalent (AEDE) was the only exception, registering
2.96 mSvy-1
indoors and 0.74 mSvy-1
outdoors. The
exposure rate (ER) was found to be higher than the
world's permissible standard because of the waste's
extremely high specific activity for the naturally
occurring 226Ra radionuclide. This necessitated specific
radiological risk management measures.
Keywords:-Phosphate sediment; phosphoric acid;
Radionuclides; Radiological effects; Thorium; Uranium;
gamma ray spectroscopy; radiation hazard indices;
Radioactivity; agriculture fertilizer.
