A comparison of uranium recovery from low-grade ore by bioleaching and acid leaching

• Autorzy: Szolucha M. M. , Chmielewski A. G.

Identyfikatory

DOI

10.5277/ppmp170111

• Języki publikacji: EN

Abstrakty

EN

The objective of this work was to compare the bioleaching with the acid leaching of uranium under similar process conditions within 65 days. The low-grade uranium ore used in the experiments was collected from Radoniow’s ‘small’ dump, Poland. Bioleaching and acid leaching studies were carried out in identical columns. The isolated bacterial consortium from the Radoniow’s mine was used for the bioleaching process. A solution of sulphuric acid and H2O2 as oxidizing agent was used for the acid leaching. The extraction of uranium under acid leaching conditions reached maximum of 64±13 % w/w after 31 days. The bioleaching of uranium achieved a maximum extraction of 75±15 % w/w after 55 days. In this study an attempt was made to demonstrate the relationship between the shrinking-core model and the experimental data by plotting the fractional conversion of uranium against time.

Słowa kluczowe

EN

bioleaching; acid leaching; column leaching; low-grade ore; uranium; recovery; shrinking core model

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 1
• Strony: 136--149
• Opis fizyczny: Bibliogr. 35 poz., rys., tab.

Twórcy

autor

Szolucha M. M.

• Institute of Nuclear Chemistry and Technology, Dorodna 16 Street, 03-195 Warsaw, Poland

autor

Chmielewski A. G.

• Institute of Nuclear Chemistry and Technology, Dorodna 16 Street, 03-195 Warsaw, Poland

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).