Autor: Chmielewski, Paweł - Katalog OPAC zbiorów

Skocz do pozycji: 2.

Tytuł:: Studies on uranium recovery from a U-bearing Radoniów Dump
Autorzy:: Kiegiel, Katarzyna
Roubinek, Otton
Gajda, Dorota
Kalbarczyk, Paweł
Zakrzewska-Kołtuniewicz, Grażyna
Chmielewski, Andrzej G.
Powiązania:: https://bibliotekanauki.pl/articles/2055668.pdf
Data publikacji:: 2021
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: ammonium diuranate precipitation
bioleaching
uranium
Opis:: This work reports the possibility of uranium recovery from a post-mining uranium ore dump in Poland by a bioleaching method. The studies were conducted on the dump leaching model with the mass of 570 kg of uranium bearing mineral material from Radoniów pile and in the periodic bioreactor with a work volume of 80 dm3 and with mechanical mixing and aeration of the charge. The uranium concentration in the examined material was about 800 ppm. In this process, the consortium of microorganisms isolated from former mines was used. It was composed of the following microorganisms: Bacillius, Pseudomonas, Sphingomonas, Thiobacillus, Halothiobacillus, Thiomonas, and Geothrix. The effi ciency of the uranium bioleaching process was 98% in the reactor, and a yield of 70% was obtained in the dump leaching model. The post-leaching solution contained signifi cant amounts of uranium ions that were separated in two stages: (1) by ion chromatography and then (2) by a two-step precipitation method. The resulting solution was a source of ammonium diuranate, the precursor of yellowcake (uranium oxides).
Źródło:: Nukleonika; 2021, 66, 4; 115--119
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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