作者机构：
[谢水波; 周洁; 林艳; 王劲松; 杨金辉; 朱雷] Key Discipline Laboratory of National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China
通讯机构：
[Wang, J.] K;Key Discipline Laboratory of National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
作者机构：
[Zheng Jian; Hu Yang; Wang Xiaoning; Song Jia; Duan Xianzhe; Yang Bifeng; Feng Zhigang] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Hunan, Peoples R China.;[Hu Yang] Univ South China, Post Doctoral Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.;[Hu Yang] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Hunan, Peoples R China.
会议名称：
3rd International Conference on Machinery, Materials Science and Energy Engineering (ICMMSEE)
会议时间：
JUL 18-19, 2015
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Duan Xianzhe;Zheng Jian;Wang Xiaoning;Yang Bifeng;Song Jia;Feng Zhigang;Hu Yang] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Hunan, Peoples R China.^[Hu Yang] Univ South China, Post Doctoral Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.^[Hu Yang] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Hunan, Peoples R China.
关键词：
Sandstone-type uranium deposit;Chemical speciation of uranium;Sequential chemical extraction;In-situ Leaching
摘要：
Sequential chemical extraction procedure was modified from Tessier process and demonstrates its application to sandstone uranium exploration. Use it to study uranium speciation with six different samples from in-situ leaching sandstone-type uranium deposits. The chemical speciation of uranium in samples was classified into six speciation: the exchangeable ion, carbonates bound, sulfide-organic matter speciation bound, amorphous Fe-Mn oxides bound, sparry Fe-Mn oxides bound and the residual state. Through the research, the uranium distribution characteristics were significantly different whether they were in different samples or in the same sample. Therefore, the research on chemical speciation of uranium Deposit before the production is essential to reasonable evaluation of Deposit and can guide the technology of in-situ leaching uranium Deposit. It also can rich the mineralization mechanism of sandstone-type uranium Deposit.
摘要：
To verifying the feasibility of uranium recovery with fungal metabolic products in large-scale applications, column leaching and ion exchange of uranium was carried out. The uranium recovery reached 81.76 % in 14 days. The ion exchange curve for the leach solution obtained with the metabolic products of Aspergillus niger was in the shape of a wave. The elution curve was similar to that of leaching with H2SO4. The results indicate that leaching with the metabolic products of A. niger is a promising and environmentally friendly method for exploitation of low grade uranium ores in large-scale applications.
作者：
Feng, Z. G.*;Zhang, B.;Duan, X. Z.;Chen, R.;Wang, X. L.;...
期刊：
Journal of Residuals Science & Technology,2015年12(SUPPL-1):S159-S163 ISSN：1544-8053
通讯作者：
Feng, Z. G.
作者机构：
[Ma, Q.; Han, S. L.; Zhang, B.; Duan, X. Z.; Chen, R.; Feng, Z. G.; Wang, X. L.] Univ South China, Sch Nucl Resource Engn, Hengyang 421001, Peoples R China.;[Zhang, B.; Chen, R.; Wang, X. L.] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium &, Hengyang 421001, Peoples R China.
通讯机构：
[Feng, Z. G.] U;Univ South China, Sch Nucl Resource Engn, Hengyang 421001, Peoples R China.
摘要：
Six uranium tailings samples from the shallow depth of two large-scale uranium tailings ponds in South China, which were affected by pedogenesis, were analyzed to determine the occurrence modes of uranium. The results demonstrated that an average of nearly 80% of the uranium in the samples was mobile and potentially mobile, indicating that this type of uranium tailings could significantly threaten their ambient environment when their contents of uranium were relatively high. In this sense, the possibility of the in-situ immobilization of active uranium in the uranium tailings was discussed. The experimental data indicated that the active uranium could be immobilized through its reaction with phosphate, which was theoretically feasible and promising in curbing uranium pollution.
作者机构：
[刘明学; 聂小琴; 董发勤] Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest of Science and Technology, Mianyang, China;[张东] Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China;[Liu, Ning] Key Laboratory of Radiation Physics and Technology, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, China;[丁德馨; 刘宁] Fundamental Science on Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
通讯机构：
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest of Science and Technology, Mianyang, China
作者机构：
[谢焱石; 尹建文; 谭凯旋; 唐振平; 段先哲; 胡杨; 王正庆; 李春光; 王昭昭; 冯志刚] School of Nuclear Resources Engineering, Hunan Provincial Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China, Hengyang;Hunan;421001, China;[谢焱石; 尹建文; 谭凯旋; 唐振平; 段先哲; 胡杨; 王正庆; 李春光; 王昭昭; 冯志刚] Hunan;[谢焱石; 尹建文; 谭凯旋; 唐振平; 段先哲; 胡杨; 王正庆; 李春光; 王昭昭; 冯志刚] 421001, China
通讯机构：
[Tan, K.] S;School of Nuclear Resources Engineering, Hunan Provincial Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China, Hengyang, Hunan, China
作者机构：
[Zhang, Qiuyang; Zhang, Haifeng; Sun, Bing] Univ South China, Inst Urban Construct, Hengyang 421001, Peoples R China.;[Zeng, Sheng] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Peoples R China.
会议名称：
International Conference on Advances in Energy, Environment and Chemical Engineering (AEECE)
会议时间：
SEP 26-27, 2015
会议地点：
Changsha, PEOPLES R CHINA
会议主办单位：
[Sun, Bing;Zhang, Haifeng;Zhang, Qiuyang] Univ South China, Inst Urban Construct, Hengyang 421001, Peoples R China.^[Zeng, Sheng] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Peoples R China.
会议论文集名称：
AER-Advances in Engineering Research
关键词：
rock mechanics;crossover jointed rock;uniaxial compression;numerical simulation
摘要：
The rock structure is extremely complex, it is difficult to reflect the mechanical properties and the relevant failure mechanisms truly under loads whatever by the theoretical analysis or the laboratory test. In order to analyze the damage characteristics of the crossover jointed rock mass from the microscopic point, the discrete method PFC2D was used to simulate the damage mechanism in the assured jointed rock numerically under Axial compression. The results show that when the angle of the main joint is consistent with the direction of the load, the varying angle between the minor joint and the main joint has rarely influence on the stress-strain curve of the rock mass, the stress when the first fine crack comes up and the peak; when the angle between the minor joint and the main joint is not changing, the peak value gradually reduces as the direction angle between the main joint and the load varying from 0 degrees to 90 degrees; when the peak comes up, the direction angle between the main joint and the load is 45 degrees or 90 degrees, the varying angle between the minor joint and the main joint has rarely influence on the development of the number of new fine cracks, while the angle between the main crack and the load is 0 degrees, the impact on the development of the number of new fine cracks is obvious.
作者机构：
[刘金香; 王永华; 谢水波; 马华龙; 陈华柏; 李标] Hunan Provincial Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China;[谢水波] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
通讯机构：
Hunan Provincial Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China
作者：
Rong, L. S.*;Yang, R. L.;Dong, C. Q.;Zhao, C.;Yan, Z.;...
作者机构：
[Dong, C. Q.; Xie, S. B.; Zhao, C.; Rong, L. S.; Yang, R. L.] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang, Peoples R China.;[Xie, S. B.] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang, Peoples R China.;[Yan, Z.] Huda Technol & Educ Dev Co Ltd, Changsha, Hunan, Peoples R China.
会议名称：
International Conference on Computer Science and Environmental Engineering (CSEE)
会议时间：
MAY 17-18, 2015
会议地点：
Beijing, PEOPLES R CHINA
会议主办单位：
[Rong, L. S.;Yang, R. L.;Dong, C. Q.;Zhao, C.;Xie, S. B.] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang, Peoples R China.^[Xie, S. B.] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang, Peoples R China.^[Yan, Z.] Huda Technol & Educ Dev Co Ltd, Changsha, Hunan, Peoples R China.
关键词：
uranium;enrichment;plant restoring
摘要：
By using hydroponics experiments,we observed the change of photosynthetic pigments and Malondialdehyde(MDA) content of Eichhornia crassipes,Pistia stratiotes,Vetiveria zizanioides and Acorus calamus L
