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Critical insight and indication on particle size effects towards uranium release from uranium mill tailings: Geochemical and mineralogical aspects by Meiling Yin; Daniel C.W. Tsang; Jing Sun; Jin Wang; Jianying Shang; Fa Fang; Yang Wu; Juan Liu; Gang Song; Tangfu Xiao; Diyun Chen is a Environmental Science article available to read on EtoBox.
What is Critical insight and indication on particle size effects towards uranium release from uranium mill tailings: Geochemical and mineralogical aspects about?
Uranium (U) is both chemically toxic and radioactive. Uranium mill tailings (UMTs) are one of the most important sources of U contamination in the environment, wherein the mechanisms that control U release from UMTs with different granularities have not yet been well understood. Herein, the release behaviours and underlying release mechanisms of U from UMTs with five different particle size fractions (<0.45, 0.45-0.9, 0.9-2, 2-6 and 6-10 mm) were studied with a well-defined leaching test (ANS 16.1) combined with geochemical and mineralogical characterizations. The results showed that the most remarkable U release unexpectedly emerged from UMT; in contrast, the smallest particle size UMT contributed to the least U release. The predominant mechanism of U release from UMT was the oxidative dissolution of U-bearing sulfides, while abundant gypsum present in UMT inhibited U release. The study highlights the importance of combined geochemical and mineralogical investigation when performing leaching tests of mineral-containing hazardous materials such as UMTs with consideration of particle size effects. The findings also indicate that elevating the content of gypsum and avoiding the oxida
Who reads Critical insight and indication on particle size effects towards uranium release from uranium mill tailings: Geochemical and mineralogical aspects?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Meiling Yin; Daniel C.W. Tsang; Jing Sun; Jin Wang; Jianying Shang; Fa Fang; Yang Wu; Juan Liu; Gang Song; Tangfu Xiao; Diyun Chen
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0045-6535)
- Published
- 2020
- Language
- EN
- Field
- Environmental Science (Physical Sciences)