Dictyonema black shale and Triassic sandstones as potential sources of uranium

• Authors: Katarzyna Kiegiel , Grażyna Zakrzewska-Kołtuniewicz , Dorota Gajda , Agnieszka Miśkiewicz , Anna Abramowska , Paweł Biełuszka , Bożena Danko , Ewelina Chajduk , Stanisław Wołkowicz
• Languages of publication: EN

Abstracts

EN

The main objective of the present study was an assessment of the possibility of uranium recovery from domestic resources in Poland. In the first stage uranium was leached from the ground uranium ore by using acidic (sulfuric acid or hydrochloric acid) or alkaline (carbonate) solutions. The leaching efficiencies of uranium were dependent on the type of ore and it reached 81% for Dictyonemic shales and almost 100% for sandstones. The novel leaching routes, with the application of the helical membrane contactor equipped with rotating part were tested. The obtained postleaching solutions were concentrated and purified using solvent extraction or ion exchange chromatography. New methods of solvent extraction, as well as hybrid processes for separation and purification of the product, were studied. Extraction with the use of membrane capillary contactors that has many advantages above conventional methods was also proposed as an alternative purification method. The final product U3O8 could be obtained by the precipitation of ‘yellow cake’, followed by calcination step. The results of precipitation of ammonium diuranate and uranium peroxide from diluted uranium solution were presented

Keywords

EN

uranium ores · leaching · extraction · ion exchange chromatography · precipitation

• Publisher: De Gruyter Open
• Journal: Nukleonika
• Year: 2015
• Volume: 60
• Issue: 3
• Pages: 515-522

Dates

published

1 - 9 - 2015

accepted

20 - 5 - 2015

received

24 - 9 - 2014

online

25 - 9 - 2015

Contributors

author

Katarzyna Kiegiel

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Grażyna Zakrzewska-Kołtuniewicz

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Dorota Gajda

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Agnieszka Miśkiewicz

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Anna Abramowska

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Paweł Biełuszka

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Bożena Danko

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Ewelina Chajduk

• Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland, Tel.: [phone], Fax: [phone]

author

Stanisław Wołkowicz

• Polish Geological Institute-National Research Institute, 4 Rakowiecka Str., 00-975 Warsaw, Poland

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Identifiers

DOI

10.1515/nuka-2015-0096