... subsequent decrease from 40 to 100%;
Rolnick, 1954; Amjad, 1988; Azimi, 2010) was used as a driving
mechanism for the recrystallization process. The mass balance
of the recrystallization experiment for the PGI sample is as
follows: the yield of purified gypsum (PG1P) was 90.50%, with
4.29% of insoluble ...
... performed by
ICP-OES, confirming the enrichment of Ca and S and the drastic
depletion of Si and Fe after recrystallization (Table 3). These
results support the effectiveness of recrystallization, which
removed most of the slightly soluble impurities, which contain
Si, Fe, Al, Ti, etc., fo-m phosphogypsum ...
... analysis showed that after the recrystallization process,
the activity concentration of “Ra decreased by approximately
five- to six-fold, and for other natural nuclides, their activity con-
centrations were below the minimum detectable level. During
recrystallization, all radionuclides precipitated ...
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11
