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(searched for: doi:10.4236/wjnst.2016.64022)
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Fatima Ezzahra Arhouni, Mohammed Hakkar, Ahmed Mahrou, Laila Belahbib, Hamid Mazouz, , , , Aziz Boukhair, Saad Ouakkas, et al.
Journal of Radioanalytical and Nuclear Chemistry, Volume 331, pp 1609-1617; https://doi.org/10.1007/s10967-022-08235-y

Abstract:
Reactive silica additives, such as clays, can increase the filterability of phosphogypsum (PG) during wet phosphoric acid production from phosphate rock (PR). In this study, the effect of adding inexpensive fly ash waste (34 kg per t PR) together with lower quantities of pure silica (8.5 kg per t PR) on the radioactivity of PG was investigated. The addition of fly ash waste/pure silica reduced the radiological activity of the PG by roughly 30%. The reduction was attributed to decreased activities from 238U (60% reduction) and 226Ra (30% reduction) in PG. Besides, P2O5 losses were slightly decreased.
Maged Ahmed Saleh Abdo, , Mohammed Fahad, Saad Ouakkas, Fatima Ezzahra Arhouni, Mohammed Hakkar, Laila Belahbib, Musherah Naji Al-Suhbani
Published: 11 June 2021
Journal of Environmental Radioactivity, Volume 237; https://doi.org/10.1016/j.jenvrad.2021.106665

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Maged Ahmed Saleh Abdo, , Mohammed Fahad, Saad Ouakkas, Mohammed Benjelloun
Published: 27 August 2020
Air Quality, Atmosphere & Health, Volume 14, pp 129-137; https://doi.org/10.1007/s11869-020-00919-2

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, A. Laamyem, A. Boukhair, E. Essediqi, M. Monkade, A. Zrabda
Journal of Radiation Research and Applied Sciences, Volume 11, pp 217-224; https://doi.org/10.1016/j.jrras.2018.01.006

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