茶渣吸附U(Ⅵ)的特性
作者：
刘希涛;李广悦;胡南;王永东;丁德馨
期刊：
化工学报 ,2012年63(10):3291-3296 ISSN：0438-1157
通讯作者：
Ding, D.(dingdxzzz@163.com)
作者机构：
[李广悦; 刘希涛; 丁德馨; 王永东; 胡南] Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China;[刘希涛] Jiaojia Gold Mine, Laizhou 264000, Shandong, China
通讯机构：
Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
茶渣;铀溶液;吸附动力学;等温吸附线
摘要：
通过静态吸附实验,考察了铀溶液初始pH、初始浓度以及吸附时间、吸附剂粒度、温度对茶渣吸附U(Ⅵ)的影响,分析了吸附过程的动力学行为及等温吸附特性,并通过红外光谱和扫描电镜探讨了吸附机理。结果表明:pH对茶渣吸附U(Ⅵ)的影响较大,pH为2和6时吸附量分别为13.90、43.19mg.g~(-1)。茶渣吸附U(Ⅵ)的过程较慢,吸附过程需要12h才能达到平衡。吸附过程的准二级动力学方程的拟合效果优于准一级动力学方程。吸附量随铀溶液浓度的增加而增大,而吸附率则相反。铀溶液初始浓度为10~100mg.L~(-1),相应的吸附量为9.40~70.05mg.g~(-1),吸附率为94.04%~70.05%。茶渣吸附U(Ⅵ)的动力学行为更符合准二级动力学方程,等温吸附数据对Freundlich方程的拟合度较高。茶渣粒度及温度对茶渣吸附U(Ⅵ)的影响不大。茶渣吸附U(Ⅵ)的过程中,起主要作用的基团有羟基、羰基、硝基、P—O、Si—O。
语种：
中文
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The influence of fractal size distribution of covers on radon exhalation from uranium mill tailings
作者：
Tan, Kaixuan* ;Liu, Zehua;Xia, Liangshu;Lv, Junwen;Hu, Hanqiao
期刊：
Radiation Measurements ,2012年47(2):163-167 ISSN：1350-4487
通讯作者：
Tan, Kaixuan
作者机构：
[Liu, Zehua; Lv, Junwen; Tan, Kaixuan; Xia, Liangshu; Hu, Hanqiao] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Tan, Kaixuan] U;Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Fractal;Size distribution;Covers;Radon exhalation rate;Uranium mill tailings
摘要：
Tailings produced during mining and milling of uranium ores represent potentially large volumes of low level radioactive materials. A typical environmental problem associated with mill tailings is radon emanation. Covering tailings is widely applied to reduce radon exhalation rate. In this paper, the fractal theories and field covering tests are used to study the fractal characters of size distribution of six types of covering materials, including waste rock, sand, laterite, kaolin, mixture of sand and laterite, and mixture of waste rock and laterite, and their influences on radon exhalation. The size distributions of uranium tailings and the six aforementioned covering materials all exhibit a good fractal structure. The contents of fine grain increase with the increasing value of fractal dimension. The results of field radon measurement show that the radon emanation rate of tailings without covers is 14.7-18.6 Bq/m<sup>2</sup> s. Covering tests were carried out of the six abovementioned covering materials with thickness of 0.4 m, 0.8 m, 1.2 m, 1.6 m and 2.0 m. The results indicate that the application of these materials for cover layers can decrease the radon exhalation rate markedly. The effectiveness of a cover layer in reducing radon exhalation is related to its fractal texture of size distribution. Under the same thickness conditions, the attenuation coefficient of radon exhalation rate increases with the increasing fractal dimension of size distribution of covers. The empirical expressions of the attenuation coefficients in relation to fractal dimension D of size distribution and thickness x of covers is obtained for evaluating the effectiveness of final covers for uranium tailings impoundments. ©2011 Elsevier Ltd. All rights reserved.
语种：
英文
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新疆某地浸砂岩型铀矿中铀赋存形态的研究
作者：
马强;冯志刚;孙静;谢二举;李小军
期刊：
岩矿测试 ,2012年31(3):501-506 ISSN：0254-5357
作者机构：
[马强; 冯志刚; 谢二举; 李小军] 南华大学核资源与核燃料工程学院;[孙静] 南华大学
关键词：
砂岩型铀矿;铀赋存形态;逐级化学提取;活性铀
摘要：
以新疆某地浸砂岩型铀矿为研究对象,参考Tessier逐级化学提取方法,对10件矿芯试样进行铀赋存形态的研究。将铀赋存形态分为可交换离子态、碳酸盐结合态、铁锰氧化物结合态、硫化物及有机物结合态和残渣态,其中前4种形态铀为活性铀,残渣态铀为惰性铀。研究结果显示,无论是试样间还是同一试样内,铀的形态分布特征都存在明显的差异。各形态铀的含量(平均值)占总量铀的比例为:残渣态(37.75%,RSD为1.80%)>碳酸盐结合态(20.56%,RSD为2.72%)>可交换离子态(15.51%,RSD为1.85%)>硫化物及有机物结合态(14.26%,RSD为2.08%)>铁锰氧化物结合态(11.91%,RSD为1.75%),表明残渣态铀是砂岩型铀矿石中铀的重要赋存形式。针对目前酸法地浸工艺,活性铀是可被浸出的部分,而惰性铀对资源回收是无效的,对于残渣态铀所占比例较高的铀矿石,铀的浸出值较低,在地浸过程中依靠提高溶浸剂的酸度和增加氧化剂对提高浸出率是无益的。
语种：
中文
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核特色矿物资源工程毕业设计（论文）的形式与教学
作者：
曾晟;孙冰;喻清
期刊：
华北理工大学学报(社会科学版) ,2012年12(4):163-165,172 ISSN：2095-2708
作者机构：
南华大学核资源与核燃料工程学院,湖南衡阳,421001;[喻清; 孙冰; 曾晟] 南华大学
会议名称：
第26届全国高校采矿工程专业学术年会
会议时间：
2012-08-20
会议地点：
北戴河
会议论文集名称：
第26届全国高校采矿工程专业学术年会论文集
关键词：
毕业设计(论文);矿物资源工程;形式与教学经验;核特色
摘要：
毕业设计（论文）是本科教学的最后一个实践教学环节,是实现本科人才培养目标的重要阶段,也是培养学生综合应用所学知识进行实践的重要环节。结合我校矿物资源工程专业的特色,积极探索了本专业毕业设计（论文）的多样化形式,同时阐述了我系矿物资源工程专业毕业设计（论文）实践教学中的教学经验。
语种：
中文
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矿物资源工程专业“岩体力学”课程教学
作者：
喻清;曾晟;杨月平;张志军
期刊：
华北理工大学学报(社会科学版) ,2012年12(4):122-124 ISSN：2095-2708
作者机构：
南华大学核资源与核燃料工程学院,湖南衡阳,421001;[杨月平; 喻清; 曾晟; 张志军] 南华大学
会议名称：
第26届全国高校采矿工程专业学术年会
会议时间：
2012-08-20
会议地点：
北戴河
会议论文集名称：
第26届全国高校采矿工程专业学术年会论文集
关键词：
岩体力学;铀矿开采;教学改革
摘要：
课程教学与实践改革是促进教师专业化成长的一个平台,是提升学生综合素质的有效途径。以南华大学核特色矿物资源工程专业＂岩体力学＂课程教学为例,从教材选择与教学安排、教学方法与教学手段、实践教学内容与安排等几个方面作了详细的介绍,为国内高校岩石力学教学提供了有益的参考。
语种：
中文
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Evaluation of the toxic effect on zebrafish (Danio rerio) exposed to uranium mill tailings leaching solution
作者：
Geng, Fang;Hu, Nan;Zheng, Ji-Fang* ;Wang, Cheng-Lei;Chen, Xin;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2012年292(1):453-463 ISSN：0236-5731
通讯作者：
Zheng, Ji-Fang
作者机构：
[Chen, Xin; Geng, Fang; Zheng, Ji-Fang; Hu, Nan; Wang, Cheng-Lei; Ding, De-Xin; Yu, Jia] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Zheng, Ji-Fang] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
关键词：
Antioxidant enzyme;MDA;Na + -K + -ATPase;Uranium mill tailings leaching solution;Zebrafish
摘要：
The objective of this study was to evaluate the potential ecological danger and toxic effect of uranium mill tailings leaching solution (UMTLS) on aquatic animals. UMTLS was identified to contain two radioactive elements, nine heavy metal elements, and five non-metallic materials. The acute toxicity test indicated that the 1, 12, 24, 48, 72, 96 h LC 50 values of UMTLS to the zebrafish were 12.1, 7.1, 4.4, 3.8, 3.4, and 2.9%, respectively. In sub-lethal toxicity tests, superoxide dismutase, catalase, Na + -K + -ATPase activities, and malondialdehyde content were respectively determined and analyzed in the zebrafish gill, gonad, muscle, and liver after exposed to four different concentration levels of UMTLS for 7 and 14 days, respectively. The result showed that the most sensitivity of the antioxidant system in zebrafish tissues in UMTLS was gill, and then decreased in gonad, muscle and liver respectively. Na + -K + -ATPase activity in the liver and gonad may be considered as a reference biomarker of UMTLS stress. The data in this study may be valuable that the toxicity of such as the leaching solution of potentially hazardous material was compared with that of each constituent. © 2011 Akadémiai Kiadó.
语种：
英文
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Sustainable development of uranium industry from the ideas of ecological security
作者：
Tan, Kaixuan* ;Huang, Yongxiang;Wang, Weiguang;Cai, Guilong
期刊：
Advanced Materials Research ,2012年524-527:2935-2939 ISSN：1022-6680
通讯作者：
Tan, Kaixuan
作者机构：
[Cai, Guilong; Tan, Kaixuan; Huang, Yongxiang; Wang, Weiguang] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Tan, Kaixuan] U;Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Peoples R China.
会议名称：
International Conference on Energy and Environmental Protection (ICEEP)
会议时间：
2012-06-23
会议地点：
Hohhot, China
会议主办单位：
[Tan, Kaixuan;Huang, Yongxiang;Wang, Weiguang;Cai, Guilong] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Peoples R China.
会议论文集名称：
Natural Resources and Sustainable Development II. Part 1
关键词：
Ecological security;Sustainable development;Uranium mining industry
摘要：
Ecological security is an important issue for sustainable development of mining industry. Uranium mining industry is the base for development of nuclear industry and nuclear power. But uranium mining and processing has larger effect on ecological environment which mainly include tailings, waste rock, waste water, and radiation effects. This paper probes into the role that ecological safety plays in the sustainable development of uranium mining based on analysis of restricting factors on uranium mining in China from the perspective of ecological security. The uranium mining industry in China to achieve sustainable development, we must establish ecological security ideas.
语种：
英文
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Particle swarm optimization for transportation dispatching system of open-pit mines
作者：
霍晓宇;杨仕教;吴长振;戴剑勇;羊帆
期刊：
煤炭学报 ,2012年37(S1):234-239 ISSN：0253-9993
通讯作者：
Yang, S.-J.(cute1088@sina.com)
作者机构：
[霍晓宇; 杨仕教; 戴剑勇; 羊帆; 吴长振] School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, Hengyang 421001, China
通讯机构：
School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, China
关键词：
露天矿山;运输调度系统;粒子群算法;整数规划
摘要：
结合露天矿山运输调度系统实际,考虑到计划产量、生产能力、质量要求和运输过程等方面的约束,建立了一个通用性较强的露天矿山运输调度系统模型。该调度模型以总的运营成本最低为目标函数,采用惩罚函数法把诸多约束条件化为无约束,构建优化系统中粒子群算法的适应度函数。通过引入自适应变异程序对粒子群算法进行改进,避免算法过早收敛,提高了收敛效果。运用改进后的自适应变异粒子群算法对露天矿山运输调度系统模型优化求解,并采用Matlab软件对求解过程进行仿真,研究结果表明该算法能够快速得到当前班次的车辆调度的满意方案,提高了露天矿山运输调度的效率,进而提高露天矿山生产率,为数字化矿山建设提供一定参考。
语种：
中文
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Study on adsorption of uranium in wastewater by clay
作者：
Li, Shiyou* ;Xie, Shuibo;Zhao, Cong;Liu, Jinxiang;Ling, Hui;...
期刊：
Applied Mechanics and Materials ,2012年209-211:2081-2085 ISSN：1660-9336
通讯作者：
Li, Shiyou
作者机构：
[Xie, Shuibo; Zhao, Cong; Liu, Jinxiang; Ling, Hui; Li, Shiyou; Gu, Zhonghua] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Li, Shiyou] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
会议名称：
International Conference on Civil, Architectural and Hydraulic Engineering (ICCAHE 2012)
会议时间：
AUG 10-12, 2012
会议地点：
Zhangjiajie, PEOPLES R CHINA
会议主办单位：
[Li, Shiyou;Xie, Shuibo;Zhao, Cong;Liu, Jinxiang;Ling, Hui;Gu, Zhonghua] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Adsorption;Clay;Uranium;Wastewater
摘要：
The effectives of pH value, contact time, sorbent dose and different initial concentration were analyzed to study the properties of the adsorption of uranium in wastewater by clay. The results show the highest adsorption capacity was obtained around neutral pH.The amount adsorbed of uranium on clay increase rapidly with increasing initial uranium concentration, but the removal rates of uranium are declined.Clay has a good adsorption capability to uranium with 18.25mg/g of adsorption capacity. The adsorption data on clay are followed by both Langmuir and Freundlich models and the results are well described by Langmuir isotherm. The pseudo-second-order kinetic model is more appropriate for the sorption process. ©(2012) Trans Tech Publications, Switzerland.
语种：
英文
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Studies on adsorption of uranium (VI) from aqueous solution by wheat straw
作者：
Wang, Xiao;Xia, Liangshu* ;Tan, Kaixuan;Zheng, Weina
期刊：
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY ,2012年31(4):566-576 ISSN：1944-7442
通讯作者：
Xia, Liangshu
作者机构：
[Zheng, Weina; Wang, Xiao] Univ S China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Tan, Kaixuan; Xia, Liangshu] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Xia, Liangshu] U;Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
wheat straw;uranium;modified;adsorption;mechanism
摘要：
A fundamental investigation on the removal of uranium from aqueous solutions by wheat straw was conducted in batch conditions. The influence of different experimental parameters such as modified methods, pH, contact time, adsorbent dose, initial concentration, and temperature, on the kinetics of uranium removal was studied. The results showed that the higher adsorption rate of uranium on wheat straw was modified by NaOH. At 303 K and pH was 3.0, the saturation adsorption was up to 1.20 mg/g at approximately 120 min. The uranium uptake was quantitatively evaluated using sorption isotherms and the correlation coefficients showed that the Freundlich model gave a better fit than the Langmuir equation. The process followed a pseudo-second-order kinetics. Scanning electron microscope coupled with Fourier transform infrared analysis for wheat straw, demonstrated that uranium-containing sites existed on the surface structure with hydroxyl, carbonyl, Pi-O and Si=O groups. Copyright © 2011 American Institute of Chemical Engineers (AIChE).
语种：
英文
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The effects of structural characteristics of low seepage sandstone uranium ore rock on permeability
作者：
Zeng, Sheng* ;Tan, Kaixuan;Du, Xueming;Li, Chunguang
期刊：
Advanced Materials Research ,2012年524-527:371-374 ISSN：1022-6680
通讯作者：
Zeng, Sheng
作者机构：
[Zeng, Sheng] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Tan, Kaixuan; Du, Xueming; Li, Chunguang] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Zeng, Sheng] U;Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
会议名称：
International Conference on Energy and Environmental Protection (ICEEP)
会议时间：
2012-06-23
会议地点：
Hohhot, China
会议主办单位：
[Zeng, Sheng] Univ S China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.^[Tan, Kaixuan;Du, Xueming;Li, Chunguang] Univ S China, Sch Nucl Resources & Nucl Fuel Engn, Hengyang 421001, Peoples R China.
会议论文集名称：
Natural Resources and Sustainable Development II. Part 1
关键词：
Fractal dimensionthe;Low seepage sandstone uranium ore rock;Permeability;Structure characteristics
摘要：
It is great important for the development of China's uranium mining to efficiently extract low seepage sandstone uranium ore rock. It is the objective of this paper to present the effects of the structural characteristics of the low seepage sandstone uranium ore rock on permeability. Samples of sandstone from a uranium mine in XinJiang province were used to carry out experimental research on permeability. These tests were carried out on ore rock with particle size and distribution characteristics determined by a homemade permeability test device. The research indicates that the sandstone uranium deposits may be classified as low seepage because the particle size falls within the range 0.1∼1.6mm, that the distribution of particle sizes observed conforms to low seepage fractal characteristics, the permeability decreases when the value of the ore particle size distribution of fractal dimensions increases, and the permeability decreases with particle size decreasing, and that the decrease of the permeability is not a linear change, but is an obviously exponentially decreasing functional relationship. ©(2012) Trans Tech Publications.
语种：
英文
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腐殖质AQS存在条件下腐败希瓦氏菌还原U(Ⅵ)的特性
作者：
谢水波1,2;张亚萍1;刘金香2;刘迎九1;李仕友2;...
期刊：
中国有色金属学报 ,2012年22(11):3285-3291 ISSN：1004-0609
通讯作者：
Xie, S.-B.(xiesbmr@263.net)
作者机构：
[张亚萍1; 刘海燕1; 刘迎九1; 谢水波1,2; 王劲松1] School of Urban Construction, University of South China, Hengyang 421001, China;[李仕友2; 谢水波1,2; 刘金香2] Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
通讯机构：
School of Urban Construction, University of South China, China
关键词：
蒽醌2磺酸钠(AQS);腐败希瓦氏菌;重金属;有毒有机物
摘要：
在厌氧条件下,研究腐败希瓦氏菌还原U(Ⅵ)的特性,考察腐殖质模式物蒽醌2磺酸钠(AQS)浓度、金属离子(Cu~(2+)、Ca~(2+)、Cr~(6+)等)与有毒有机物等对U(Ⅵ)还原的影响。结果表明:腐败希瓦氏菌可以利用一些有机酸盐作为电子供体,以AQS作为电子穿梭载体,进行醌呼吸,高效还原U(Ⅵ)。当AQS的浓度为0~2 mmol/L时,能显著加速U(Ⅵ)的还原过程;当AQS的浓度高于2 mmol/L时,随着AQS浓度从2 mol/L增加到10 mol/L,AQS与U(Ⅵ)竞争电子,明显抑制U(Ⅵ)的还原。同时,Ca~(2+)和Cu~(2+)对U(Ⅵ)的还原均表现出较强的抑制作用,Cu~(2+)的抑制作用通过抑制呼吸链上脱氢酶的活性实现;但Mn~(2+)和Cr~(6+)对腐殖质还原U(Ⅵ)的影响较小,在60 h内,未观测到溶液中Cr~(6+)浓度的明显变化。金属离子对还原U(Ⅵ)抑制作用的强度与其浓度正相关。环境中甲苯、三氯乙酸和对硝基苯酚等有毒有机物可以作为电子供体被腐败希瓦氏菌利用而降解,得到氧化降解,同时实现U(Ⅵ)的高效还原。
语种：
中文
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Effect of culture parameters on the biosorption of uranium onto chlorella pyrenoidosa
作者：
Li, Shiyou* ;Xie, Shuibo;Liu, Jinxiang;Rong, Lishan;Zhao, Cong;...
期刊：
Advanced Materials Research ,2012年518-523:3321-3327 ISSN：1022-6680
通讯作者：
Li, Shiyou
作者机构：
[Zhou, Shuai; Rong, Lishan; Zhao, Cong; Liu, Jinxiang; Li, Shiyou] Univ S China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Li, Shiyou] U;Univ S China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
会议名称：
1st International Conference on Energy and Environmental Protection (ICEEP 2012)
会议时间：
JUN 23-24, 2012
会议地点：
Hohhot, PEOPLES R CHINA
会议主办单位：
[Li, Shiyou;Liu, Jinxiang;Rong, Lishan;Zhao, Cong;Zhou, Shuai] Univ S China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Biosorption;Chlorella pyrenoidosa;Orthogonal experiment;U(VI)
摘要：
The usefulness of chlorella pyrenoidosa were investigated for the removel of U(VI) from aqueous solution. Employing monofactorial and orthogonal experiment method for evaluating the biosorption of U(VI) onto chlorella pyrenoidosa, respectively, the influence of U(VI) concentration, pH, N/P and temperature on the biosorption of U(VI) by chlorella pyrenoidosa were studied.The results showed that the pH and U(VI) concentration were significant to remove U(VI) and that the increases of pH as well as U(VI) concentration was beneficial to the U(VI) absorption. However, the U(VI) absorption was affected less by the N/P and the temperature. Confirmed through orthogonal experiment, the optimum condition composition to attenuate U(VI) was 3.4mg/L U(VI) concentration at pH 6.0 with temperature 293K,and 3/1 of N/P. It was also proved that fresh cell of 1g/L(in dry weight) was able to attenuate U(VI) in wastewater from 3.4mg/L to 0.72 mg/L after batch experiments under the optimum conditions, which indicated good prospect in its future application. ©(2012) Trans Tech Publications, Switzerland.
语种：
英文
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煤矿矿区生态恢复研究实践——以耒阳石界煤矿为例
作者：
田超;曾凡勇;谢水波;廖建军;胡凯光
期刊：
南华大学学报(自然科学版) ,2012年26(4):25-30 ISSN：1673-0062
作者机构：
南华大学城市建设学院;[曾凡勇] 湖南省国际工程咨询中心;南华大学设计与艺术学院;南华大学核资源工程学院;[田超; 胡凯光; 廖建军; 谢水波] 南华大学
关键词：
煤矿区;生态恢复;城市污泥;植物样方
摘要：
为了对湖南耒阳石界煤矿矿区进行生态恢复,首先对矿区约1.05 km2开采区域进行了实地调查分析,并运用矿山模糊综合评价方法对矿山地质环境影响进行评估.调查结果表明,矿区土壤pH值约为6.0且约0.35 km2矿区土壤结构严重破坏.采用城市污泥作为矿区土壤改良剂和肥料,并利用当地优势植物进行矿区生态恢复.实践表明,城市污泥不仅可以改良矿区的土壤特性,还可以增强矿区土壤的保水性能并能促进植物生长.综合城市污泥对土壤环境及植物生长状况的改良情况,结果表明在矿区土壤进行污泥堆肥的基础上进行混合植株种植较单植有更显著的土壤改良效果.
语种：
中文
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Effects of radioactive effluence of uranium mine exhaust well on the surface ecological environment
作者：
Wang, H. Q.;Wang, Z. Y.* ;Liu, C. R.;Zhou, X. H.
期刊：
Advanced Science Letters ,2012年10(1):391-395 ISSN：1936-6612
通讯作者：
Wang, Z. Y.
作者机构：
[Liu, C. R.] Department of Civil Engineering, Hunan University of Technology, Zhuzhou 412008, Hunan, China;School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan, China;[Zhou, X. H.] School of Nuclear Resources and Safety Engineering, Nanhua University, Hengyang 421001, China;[Wang, H. Q.; Wang, Z. Y.] Department of Civil Engineering, Hunan University of Technology, Zhuzhou 412008, Hunan, China, School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan, China
通讯机构：
[Wang, Z. Y.] D;Department of Civil Engineering, Hunan University of Technology, China
关键词：
Effusion;Nuclide;Radioactive effluence;Surface ecological environment;Uranium mine
摘要：
In this paper, the effects of radioactive effluence of uranium mine exhaust well on the surface ecological environment are discussed based on the data analysis of nuclide distributions and the effusions. It is pointed out that the effluence is the most primary pollution source of the ground ecological environment, and its pollution law accords with a regression equation. It is also presented that controlling effusions is a major method for improving the surface ecological environment around exhaust well. Simultaneously, constructive suggestions such as establishing control zone and supervision zone, quickening the research of effusions purifying equipment are proposed. © 2012 American Scientific Publishers, All rights reserved.
语种：
英文
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固定床生物反应器模拟溶浸采铀吸附尾液中Fe~(2+)的氧化试验
作者：
王清良;杨懿全;杨敬;陈勇博;胡鄂明;...
期刊：
化工学报 ,2012年63(11):3688-3693 ISSN：0438-1157
通讯作者：
Wang, Q.(nhwql@sina.com)
作者机构：
[余润兰; 邱冠周] School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China;[杨懿全; 杨敬; 陈勇博; 胡鄂明; 张洪灿] School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, Hengyang 421001, Hunan, China;[王清良] School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China<&wdkj&>School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, Hengyang 421001, Hunan, China
通讯机构：
School of Minerals Processing and Bioengineering, Central South University, China
关键词：
固定床生物反应器;嗜酸氧化亚铁硫杆菌;氧化;溶浸采铀
摘要：
以活性炭作载体固定嗜酸氧化亚铁硫杆菌,构建固定床生物反应器,模拟溶浸采铀矿山吸附尾液全Fe浓度和溶液pH条件,对生物反应器氧化Fe~(2+)工艺参数进行了试验研究。结果表明:活性炭作载体比无载体时生物反应器氧化Fe~(2+)速率增加了1.4倍,由0.5g·L~(-1)·h~(-1)增大至1.2g·L~(-1)·h~(-1);生物反应器运行过程中溶液中全Fe因生成铁钒而不断消耗,需要定期清理反应器中的铁矾和补充FeSO_4以保持溶液中全Fe浓度;生物反应器最优的操作条件是:底部通气,Fe~(2+)浓度为5g·L~(-1)时,溶液流量为1.2~1.4L·h~(-1);Fe~(2+)浓度为1g·L~(-1)时,溶液流量为5.4L·h~(-1)。
语种：
中文
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黑曲霉产有机酸浸出铀矿石的影响因素
作者：
王永东;李广悦;丁德馨;胡南;邓钦文;...
期刊：
化工学报 ,2012年63(5):1584-1591 ISSN：0438-1157
通讯作者：
Ding, D.(dingdxzzz@163.com)
作者机构：
[王永东; 李广悦; 丁德馨; 胡南; 邓钦文; 周支香] Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China
通讯机构：
Key Discipline Lab. for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
真菌;黑曲霉;有机酸;浸铀;影响因素
摘要：
为了解培养基种类、培养温度和pH值等因素对黑曲霉产生的混合有机酸浸出铀矿石的影响,从铀矿山水样中分离、纯化得到了一株真菌——黑曲霉,应用马铃薯-蔗糖培养基(potato sucrose agar,PSA)和葡萄糖-玉米浆培养基(dextrose corn syrup,PCS)进行黑曲霉培养,获得了不同培养温度下产生的pH值不同的黑曲霉产混合有机酸,并将之作为浸出剂用于浸铀实验研究.研究表明,黑曲霉产生的有机酸的主要组分为草酸和柠檬酸等有机酸,培养基种类的不同会影响黑曲霉所产有机酸的浸铀效果,采用PSA培养基培养的黑曲霉产生的有机酸浸铀效果更好(p＜0.05).培养温度和混合有机酸的pH值也会对黑曲霉代谢产物的铀浸出率有显著性影响(p＜0.05),且二者具有交互效应,pH值对铀浸出率的影响相对较大.应用PSA培养基时,最佳培养温度为25℃,最佳代谢产物pH值为2.3；应用PCS培养基时,最佳培养温度为30℃,最佳混合有机酸pH值为2.0.培养基种类、温度和pH值主要通过改变黑曲霉产生的有机酸的成分和含量对铀浸出率产生影响.
语种：
中文
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位移反分析的模式搜索支持向量机方法及其应用
作者：
刘永;张志军;贺桂成;丁德馨
期刊：
中国有色金属学报 ,2012年22(11):3193-3200 ISSN：1004-0609
通讯作者：
Ding, D.-X.(dingdxzzz@163.com)
作者机构：
[刘永; 丁德馨; 张志军; 贺桂成] School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, Hengyang 421001, China
通讯机构：
School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, China
关键词：
模式搜索算法;支持向量机;位移反分析;围岩;数值模拟
摘要：
针对现有位移反分析方法所存在的反分析模型复杂、计算量大、分析过程人为干预多、求解难度高等问题,提出采用模式搜索算法优化支持向量机,建立一种位移反分析的模式搜索支持向量机方法(PSA-SVM)。以湖南某矿山一个地下矿房为例,应用所建方法对其围岩力学特性参数进行反演,并对该矿房围岩稳定性进行数值模拟计算,分析矿房回采后对地面沉降的影响;并将模拟计算结果与长期监测结果进行比较分析。结果表明:这种位移反分析的模式搜索支持向量机方法的反演结果与实际值吻合良好,完全能够满足工程应用的要求;此外,该方法还具有模型建立简捷、参数调节明确且结果为全局最优等特点,是一种优异的位移反分析方法。
语种：
中文
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Adsorption properties and mechanism of saccharomyces cerevisiae loaded by nano-Fe3 O4 on uranium
作者：
彭国文;丁德馨;胡南;杨雨山;王晓亮
期刊：
中国有色金属学报 ,2012年22(2):604-610 ISSN：1004-0609
通讯作者：
Ding, D.-X.(dingdxzzz@163.com)
作者机构：
[杨雨山; 彭国文] School of Resources and Safety Engineering, Central South University, Changsha 410083, China;[王晓亮; 彭国文] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;[杨雨山; 彭国文; 胡南; 丁德馨] Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
通讯机构：
Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
纳米Fe3O4啤酒酵母菌;负载;吸附性能;吸附机理;铀
摘要：
以纳米Fe_3O_4磁性微粒负载啤酒酵母菌,制备一种新型铀吸附剂,考察其吸附铀的主要影响因素,即溶液pH值、铀初始浓度、吸附剂投加量及其粒度,分析吸附过程的反应动力学和等温吸附规律,并用扫描电镜和能谱仪分析吸附机理。结果表明:纳米Fe_3O_4负载啤酒酵母菌(NFSC)吸附铀的最佳条件是pH值为7.0,铀初始浓度为60 mg/L,NFSC加入量为50 mg,NFSC的最佳粒径为12 nm。NFSC对铀的吸附动力学较好地符合准二级动力学模型,相关系数为0.999 6;吸附等温线均能符合Langmuir和Freundlich等温线模型,说明该吸附体系是一个单层覆盖与多层吸附相结合的模式。扫描电镜和能谱图表明:NFSC吸附铀后表面形态发生变化,且吸附过程中共存物理吸附和化学吸附,属于混合吸附类型。
语种：
中文
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化学修饰啤酒酵母菌对铀的吸附特性
作者：
彭国文;丁德馨;胡南;杨雨山;王晓亮
期刊：
化工学报 ,2011年62(11):3201-3206 ISSN：0438-1157
通讯作者：
Ding, D.(dingdxzzz@163.com)
作者机构：
School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China;[丁德馨; 胡南] Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China;[王晓亮] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, Hunan, China;[彭国文] School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China<&wdkj&>Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China<&wdkj&>School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, Hunan, China;[杨雨山] School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China<&wdkj&>Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China
通讯机构：
Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, China
关键词：
修饰啤酒酵母;化学修饰;铀;生物吸附;动力学模型
摘要：
以甲醛为交联剂,将胱氨酸修饰到啤酒酵母菌(SC)上,并采用海藻酸钠和明胶固定化,得到一种新型的生物吸附剂——修饰啤酒酵母菌( MSC).通过红外光谱(IR)分别表征了两种吸附剂的结构,考察了其吸附铀的主要影响因素即溶液pH值、吸附时间等.结果表明:MSC细胞表面具有大量吸附铀的基团,MSC和SC吸附铀的最佳条件是:pH值为6.0,吸附时间分别为1.8、1.5h.对吸附动力学模型和吸附等温模型进行了分析,MSC和SC对铀的吸附动力学模型较好地符合了准二级动力学模型,MSC和SC的相关系数均大于0.99;吸附等温线均能符合Langmuir和Freundlich等温线模型,说明该吸附体系是一个单层覆盖与多层吸附相结合的吸附模式,且MSC的最大吸附量是SC的6.5倍.
语种：
中文
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