Simulation of uranium formed in groundwater of a low-level radioactive waste repository site in southwest China - Details

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Abstract：

PHREEQC　software　was　used　to　study　the　chemical　form　of　uranium　based　on　the　chemical　composition　of　groundwater　from　a　low-level　radioactive　waste　repository　located　in　southwest　China.　The　effects　of　pH,　temperature,　and　pE　(the　equilibrium　state　of　electronic　activity)　on　the　distribution　in　uranium　chemical　form　were　studied.　The　results　show　that　uranium　presents　in　the　VI　chemical　valence　and　[UO2(CO3)2]2-　,　[UO2(CO3)3]4-　,　and　UO2CO3　forms　when　pH=7.6,　T=12.2　°C,　and　pE=4　in　groundwater.　Temperature　and　pH　strongly　impact　the　distribution　of　the　uranium　chemical　form.　However,　pE　has　little　effect　on　the　chemical　form　distribution.　Therefore,　pH　and　groundwater　temperature　should　be　taken　key　considerations　during　the　selection　of　waste　landfill　sites.　©　Editorial　office　of　Acta　Physico-Chimica　Sinica.

Keyword：

Chemical form; Groundwater; PHREEQC; Simulation; Uranium

Community：

[ 1 ] [Xu, Z.]Sichuan Key Laboratory of Applied Nuclear Techniques in Geosciences, Chengdu University of Technology, Chengdu, 610059, China
[ 2 ] [Lu, C.-H.]Sichuan Key Laboratory of Applied Nuclear Techniques in Geosciences, Chengdu University of Technology, Chengdu, 610059, China
[ 3 ] [Lu, C.-H.]Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang, 330013, China
[ 4 ] [Chen, M.]School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
[ 5 ] [Chen, W.-K.]Department of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Huang, S.]Sichuan Key Laboratory of Applied Nuclear Techniques in Geosciences, Chengdu University of Technology, Chengdu, 610059, China
[ 7 ] [Zhang, Q.]Sichuan Key Laboratory of Applied Nuclear Techniques in Geosciences, Chengdu University of Technology, Chengdu, 610059, China

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[Lu, C.-H.]Sichuan Key Laboratory of Applied Nuclear Techniques in Geosciences, Chengdu University of TechnologyChina

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Acta Physico - Chimica Sinica

ISSN： 1000-6818

Year： 2015

Volume： 31

Page： 45-48

0 . 8 4 4

JCR@2015

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JCR@2023

ESI HC Threshold：265

JCR Journal Grade：4

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ESI Highly Cited Papers on the List： 0 Unfold All

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