土壤细菌胞外聚合产物对溶液中U（VI）的去除动力学研究
作者：
董雪洁;宋平;吕俊文;邓晨阳
期刊：
南华大学学报(自然科学版) ,2020年34(03):68-72 ISSN：1673-0062
作者机构：
南华大学 资源环境与安全工程学院,湖南 衡阳421001;湖南省核工业中心实验室,湖南 长沙410100;衡阳市土壤污染控制与修复重点实验室,湖南 衡阳421001;[董雪洁; 邓晨阳; 吕俊文] 南华大学;[宋平] 湖南省核工业中心
关键词：
土壤细菌;胞外聚合物;铀;动力学分析
摘要：
通过分离和扩培土壤细菌,提取其胞外聚合产物,进行在不同温度下对土壤细菌胞外聚合产物和土壤细菌产量的影响研究,同时进行反应时间对土壤细菌胞外聚合产物去除溶液中U（VI）的影响研究。采用准一级动力学方程和准二级动力学方程对其进行动力学进行分析,研究结果显示在303 K下培养土壤细菌并进行土壤细菌胞外聚合产物的提取较为合适。298 K、308 K和318 K的温度下,土壤细菌胞外聚合产物去除U（VI）在120 min左右达到反应平衡,平衡去除量分别为4. 97 mg/g,8. 75 mg/g,6. 96 mg/g。准二级动力学方程比准一级动力学方程能更好的描述反应进程,说明了土壤细菌胞外聚合产物去除U（VI）是一个以化学机制为主的反应。
语种：
中文
展开
地浸终采残留液对某砂岩型铀矿的浸出性能研究
作者：
雷宗宇;仇月双;蒋宇红;吕俊文;戈玉华
期刊：
铀矿冶 ,2020年39(02):79-86 ISSN：1000-8063
作者机构：
南华大学资源环境与安全工程学院,湖南衡阳421001;核工业北京化工冶金研究院,北京101149;[戈玉华; 雷宗宇; 吕俊文] 南华大学;[蒋宇红; 仇月双] 核工业北京化工冶金研究院
关键词：
铀矿;酸法地浸采铀;残留液;浸出动力学
摘要：
为推动终场采场残留液在地浸采铀中的利用,通过室内静态试验,研究了酸法地浸终采残留液对砂岩铀矿含矿岩芯的浸出条件和浸出动力学。试验结果表明:1)该砂岩岩芯适合酸法浸出;2)残留液对该矿在自然粒径下的最佳浸出条件:固液质量体积比为1∶8 g/mL,浸出时间为48 h,双氧水加入质量浓度为1 g/L,铀浸出率为77.36%。残留液的铀浸出动力学研究（反应活化能Ea=27.519 kJ/mol）结果表明,残留液对该铀矿的浸出过程主要受混合控制。该研究可为终场残留液在地浸采铀中的应用提供参考。
语种：
中文
展开
工程教育认证背景下OBE教育理念的借鉴与思考
作者：
谭文发;周英;吕俊文;房琦;吴晓燕
期刊：
教育现代化 ,2019年(07):28-30 ISSN：2095-8420
作者机构：
1. 南华大学资源环境与安全工程学院;2. 南华大学船山学院
关键词：
工程教育认证;环境工程;人才培养
摘要：
环境工程专业的教育强调知识的应用性,注重培养学生分析问题、解决问题的能力。为促进工程教育的国际互认,环境工程专业工程教育认证势在必行。南华大学环境专业是在原核工业第六研究所通风辐射防护室等基础上发展而来的,特色鲜明。近年,南华大学环境工程专业基于 OBE（Outcome based education）教育模式,紧紧围绕学校"一基三实"中强调的"把人才培养做实","把服务社会做实"的学校发展思路,在培养目标分解、理论课程体系和实践教学改革、学生创新能力培养、评估体系完善和高素质教师队伍建设等方面进行了一系列的改革与尝试,取得了良好效果。
语种：
中文
展开
The effect of laterite density on radon diffusion behavior
作者：
Li, Yongmei;Tan, Wanyu;Tan, Kaixuan* ;Liu, Zehua;Fang, Qi;...
期刊：
Applied Radiation and Isotopes ,2018年132:164-169 ISSN：0969-8043
通讯作者：
Tan, Kaixuan
作者机构：
[Guo, Yueyue; Li, Yongmei; Liu, Zehua; Tan, Wanyu; Tan, Kaixuan; Duan, Xianzhe] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Hunan, Peoples R China.;[Fang, Qi; Lv, Junwen; Liu, Zhenzhong] Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Tan, Kaixuan] U;Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Diffusion coefficient;Laterite;Radon;Soil density
摘要：
Radon generated in porous media such as soils and rocks migrates into indoor and outdoor air mainly by diffusion, possessing significant hazards to human health. In order to reduce these hazards of radon, it is of great importance to study the diffusion behavior of radon. In this study, we systematically measured the radon diffusion coefficient of laterite with the density ranging from 0.917 g cm −3 to 2.238 g cm −3 , and studied the effect of laterite density on the radon diffusion. The results show that the radon diffusion coefficient of the laterite generally decreases with the increasing laterite density. In addition, three possible relationships between the radon diffusion coefficient and the laterite density are found out as follows: (1) the linear correlation with a slope of −4.48 × 10 −6 for laterite with density ranging from 0.917 to 1.095 g cm −3 , (2) the exponential correlation for laterite with density from 1.095 to 1.63 g cm −3 , (3) linear correlation with a slope of −3.1 × 10 −7 for laterite with density from 1.63 to 2.238 g cm −3 . The complex relationship between the radon diffusion coefficient and density is caused by the change of porosity and tortuosity of the laterite. Therefore, we suggest that a suitable density should be adopted while using the laterite to effectively cover uranium tailings or economically produce building materials that can curb the radon exhalation. © 2017 Elsevier Ltd
语种：
英文
展开
改性锯末对铀的吸附机理研究
作者：
宋勇;吕俊文;张园园;张潮滨;黎炽昊;...
期刊：
安全与环境工程 ,2018年25(3):86-92+129 ISSN：1671-1556
作者机构：
南华大学环境与安全工程学院,湖南衡阳,421001;[张园园; 宋勇; 黎炽昊; 吕俊文; 房琦; 张潮滨] 南华大学
关键词：
锯末;改性;铀;吸附机理
摘要：
基于锯末的吸附类型对锯末进行改性,通过静态吸附试验,研究改性锯末对模拟废水中铀的吸附影响因素以及吸附过程中的动力学和热力学行为,并分析改性锯末对铀的吸附机理.结果表明:氯化锌改性的锯末对铀的吸附效果最好;在溶液pH=4.5时,改性锯末对铀的去除率最高;改性锯末对铀的吸附平衡时间约为30 min;改性锯末对铀的吸附遵循Langmuir吸附等温线,符合准二级动力学方程;改性锯末对铀的吸附热力学参数△H=-25.792 kJ/mol、△G=-16.327～-15.851 kJ/mol、△S=-31.760 J/(mol· K)均小于零,说明吸附反应是一个放热自发的过程.SEM和FTIR分析表明:改性锯末对铀的吸附主要是表面络合吸附,吸附后改性锯末的表面变得相对平整;参与吸附活动的官能团主要为改性锯末表面的酰胺基、羟基、酮基和芳烃C-H键等基团.
语种：
中文
展开
Numerical simulation to quantify the leakage risk in a multi-layer aquifer system of pure brine recovery and CO2 -enhanced brine recovery: a case study of potassium-rich brine recovery in Jianghan Basin of China
作者：
Fang, Qi;Lv, Junwen;Peng, Guojian* ;Luo, Caiwu;Li, Mi;...
期刊：
Environmental Earth Sciences ,2017年76(13):1-11 ISSN：1866-6280
通讯作者：
Peng, Guojian
作者机构：
[Li, Mi; Fang, Qi; Lv, Junwen; Tan, Wenfa; Luo, Caiwu; Luo, Yingfeng] Univ South China, Sch Environm & Safety Engn, Hengyang 421001, Peoples R China.;[Peng, Guojian] Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构：
[Peng, Guojian] U;Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
Pure brine recovery (PBR);CO2-enhanced brine recovery (CO2-EBR);A multi-layer aquifer;Leakage risk;Pressure control
摘要：
Deep brine recovery enhanced by supercritical CO2 injection is proposed to be a win–win method for the enhancement of brine production and CO2 storage capacity and security. However, the cross-flow through interlayers under different permeability conditions is not well investigated for a multi-layer aquifer system. In this work, a multi-layer aquifer system with different permeability conditions was built up to quantify the brine production yield and the leakage risk under both schemes of pure brine recovery and enhanced by supercritical CO2. Numerical simulation results show that the permeability conditions of the interlayers have a significant effect on the brine production and the leakage risk as well as the regional pressure. Brine recovery enhanced by supercritical CO2 injection can improve the brine production yield by a factor of 2–3.5 compared to the pure brine recovery. For the pure brine recovery, strong cross-flow through interlayers occurs due to the drastic and extensive pressure drop, even for the relative low permeability (k=10−20m2) mudstone interlayers. Brine recovery enhanced by supercritical CO2 can successfully manage the regional pressure and decrease the leakage risk, even for the relative high permeability (k=10−17m2) mudstone interlayers. In addition, since the leakage of brine mainly occurs in the early stage of brine production, it is possible to minimize the leakage risk by gradually decreasing the brine production pressure at the early stage. Since the leakage of CO2 occurs in the whole production period and is significantly influenced by the buoyancy force, it may be more effective by adopting horizontal wells and optimizing well placement to reduce the CO2 leakage risk. © 2017, Springer-Verlag GmbH Germany.
语种：
英文
展开
超临界CO2强化深层卤水开采的井群布设方法
作者：
彭国建;房琦;谭凯旋;吕俊文
期刊：
南华大学学报(自然科学版) ,2017年31(4):47-52 ISSN：1673-0062
作者机构：
南华大学 计算机学院,湖南 衡阳,421001;南华大学 环境与安全工程学院,湖南 衡阳,421001;南华大学 核资源工程学院,湖南 衡阳,421001;[彭国建; 吕俊文; 谭凯旋; 房琦] 南华大学
关键词：
超临界CO2强化卤水开采;井群布设方法;矩形井网;三角形井网
摘要：
超临界CO2强化深层卤水开采可显著地提高卤水的开采效率,同时增强CO2的封存安全也是一种实现卤水高效开发和减缓温室效应的双赢选择.本文通过数值模拟的方法对比研究了不同井群布设方法下超临界CO2强化深层卤水开采的效果,得到的结论如下:无论是矩形井网法还是三角形井网法,超临界CO2强化深层卤水开采的效果都是非常显著的.基于提出的4种布井方法,从卤水开采总量、卤水越流风险、CO2注入总量、CO2泄漏比和区域压力调控这几个方面对比分析:7B6C与9B4C相当、6B7C次之、4B9C效果略差,整体上集中式的三角形井网法略优于矩形井网法,但这两种布井方法没有明显的优势差别.因此,在实际的超临界CO2强化卤水开采项目中,可根据现场地形和工程条件选择比较合适的布井方法.
语种：
中文
展开
Study on kinetics of adsorption of humic acid modified by ferric chloride on U(VI)
作者：
Zhang, Y. Y.;Lv, J. W.* ;Song, Y.;Dong, X. J.;Fang, Q.
期刊：
IOP Conference Series: Earth and Environmental Science ,2017年94(1) ISSN：1755-1307
通讯作者：
Lv, J. W.
作者机构：
[Lv, J. W.; Song, Y.; Dong, X. J.; Fang, Q.; Zhang, Y. Y.] Univ South China, Sch Environm Protect & Safety Engn, Hengyang City 421001, Peoples R China.
通讯机构：
[Lv, J. W.] U;Univ South China, Sch Environm Protect & Safety Engn, Hengyang City 421001, Peoples R China.
会议名称：
2017 3rd International Conference on Energy, Environment and Materials Science (EEMS)
会议时间：
JUL 28-30, 2017
会议地点：
Northwestern Polytechnical University, Singapore, SINGAPORE
会议主办单位：
Northwestern Polytechnical University
会议论文集名称：
IOP Conference Series-Earth and Environmental Science
摘要：
In order to reveal the adsorption mechanism of the ferric chloride modified humic acid on uranium, the influence of pH value and contact time of adsorption on uranium was studied through a series of batch experiments. Meanwhile, the adsorption kinetics was analyzed with pseudo-first order kinetic model and pseudo-second order kinetic model. The results show that adsorption is affected by the pH value of the solution and by contract time, and the best condition for adsorption on uranium is at pH=5 and the adsorption equilibrium time is about 80 min. Kinetics of HA-Fe adsorption on uranium accords with pseudo-second order kinetic model. The adsorption is mainly chemical adsorption, and complexes were produced by the reaction between uranium ions and the functional groups on the surface of HA-Fe, which can provide reference for further study of humic acid effecting on the migration of U(VI) in soil.
语种：
英文
展开
Application of a combination of municipal solid waste incineration fly ash and lightweight aggregate in concrete
作者：
Tan, Wen-fa* ;Lv, Jun-wen;Deng, Qin-wen;Zhang, Xiao-wen
期刊：
Journal of Adhesion Science and Technology ,2016年30(8):866-877 ISSN：0169-4243
通讯作者：
Tan, Wen-fa
作者机构：
[Tan, Wen-fa; Zhang, Xiao-wen; Lv, Jun-wen; Deng, Qin-wen] Univ South China, Dept Environm Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Tan, Wen-fa] U;Univ South China, Dept Environm Engn, Hengyang 421001, Peoples R China.
关键词：
Fly ash;hazardous waste;lightweight aggregate;concrete
摘要：
This paper highlights significant findings from focusing on developing a sustainable lightweight aggregate (LWA) concrete, which replaced Portland cement partially with municipal solid waste incineration fly ash (MSWI FA) and all of the conventional coarse aggregate with LWA sintered by MSWI FA, shale, and sludge. A series of four experiments, differing in dosage of MSWI FA and aggregate, were conducted for this project. The results of this study generally showed that appropriate amount of MSWI FA substitution for cement has no significantly lowered the compressive strengths of LWA concrete, while it can lower the oven-dry density and the thermal conductivity. The optimum performance of LWA concrete (after 28 days of curing) is as follows: (1) slump flow of 700 mm, (2) compressive strength of 30.14 MPa, (3) dry apparent density of 1.66 g/cm3, (4) thermal conductivity of 0.73 W (m K)−1; the mixture ratio of LWA, fly ash, cement, and fine sand is 3.0: 0.1: 0.9: 2.0 based on dry weight. Meanwhile, the results of leaching test are much lower than the concentration limits of hazardous constituents of hazardous waste identification standard (GB/T 5083.3-2007) and landfill standard (GB16889-2008).
语种：
英文
展开
表面活性剂提高铀矿石浸出率研究
作者：
Lü* ;, Yang;, Junwen;Zhou, Jianliang;...
期刊：
稀有金属 ,2016年40(2):182-187 ISSN：0258-7076
通讯作者：
Lü, Junwen(jwlv9892@aliyun.com)
作者机构：
南华大学核科学技术学院, 湖南, 衡阳, 421001;南华大学环境保护与安全工程学院, 湖南, 衡阳, 421001;南华大学核资源工程学院, 湖南, 衡阳, 421001;[吕洋; Zhou, Jianliang] 南华大学核科学技术学院, 湖南, 衡阳, 421001;[吕俊文] 南华大学环境保护与安全工程学院, 湖南, 衡阳, 421001
通讯机构：
School of Environment Protection and Safety Engineering, University of South China, Hengyang, China
关键词：
表面活性剂;表面张力;渗透性;铀浸出率
摘要：
为了解决铀矿堆浸过程中渗透性差以及浸出率不高的问题, 通过添加表面活性剂提高渗透性而强化铀矿石浸出。 本研究采用静态实验研究3种不同的表面活性剂脂肪酸甲酯磺酸盐(MES)、 十二烷基硫酸钠(SDS)、 吐温80对铀浸出率的影响, 并测定溶浸剂的表面张力, 选出使铀浸出率提升最大的表面活性剂后确定其最佳用量; 再通过动态柱实验进一步研究铀矿堆浸过程中表面活性剂对渗透性大小的改变及铀浸出率的影响。 静态实验结果表明: 3种表面活性剂均能提高铀浸出率, 其中十二烷基硫酸钠对铀的浸出效果最好且使溶浸剂表面张力降低最低, 为52.94%; 接近临界胶束浓度时铀浸出率最高, 故选用0.008 mol·L~(-1)的十二烷基硫酸钠进行动态实验。 动态实验结果表明: 十二烷基硫酸钠的加入最终使实验柱的渗透系数提高至4.6倍, 铀的浸出率由48.41%提升至60.20%, 增加了11.79%。 表面活性剂增大了铀矿石堆浸过程中的渗透性, 使铀浸出率提高。
语种：
中文
展开
Effects of feldspar and salinity on the mineral sequestration capacity of CO2 in high-salinity aquifers
作者：
Fang, Qi* ;Li, Yilian;Peng, Guojian;Cheng, Peng;Lv, Junwen
期刊：
Environmental Earth Sciences ,2016年75(18):1-13 ISSN：1866-6280
通讯作者：
Fang, Qi
作者机构：
[Fang, Qi; Lv, Junwen] Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Peoples R China.;[Li, Yilian] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China.;[Peng, Guojian] Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.;[Cheng, Peng] Team 217 Hunan Nonferrous Geol Explorat Bur, Hengyang 421001, Peoples R China.
通讯机构：
[Fang, Qi] U;Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Peoples R China.
关键词：
CO2 geological storage;Mineral sequestration capacity;Feldspar;Salinity;High-salinity aquifers
摘要：
Mineral sequestration of CO2 is considered to be the safest mechanism in the long-term storage of CO2 in deep saline aquifers. This study aims to investigate the effect of feldspar and salinity on the mineral sequestration capacity of CO2 in deep high-salinity brine aquifers by taking Jiangling Depression of Jianghan Basin for instance. Numerical simulation on the long-term geochemical reaction and transport was performed by taking TOUGHREACT as the simulation tool. Simulation results indicate that the effect of feldspar on the mineral trapping capacity of CO2 does not depend on the total content of feldspar, but depends on feldspar type and relative content. With Mg-rich minerals such as chlorite or dolomite present, the mineral composition abundant in K-feldspar is less favorable for the mineral sequestration capacity of CO2 for the reason that a large amount of illite precipitates, consuming a lot of Al3+ in the aqueous solution, thereby limiting the precipitation of dawsonite, especially for the high-temperature sedimentary environment. In addition, the effect of salinity on the mineral sequestration capacity of CO2 represents two aspects: one for the longer migration distance due to the lower solubility of higher salinity and the other for CO2 mineral trapping capacity per 1m3 medium which is not in simple decreased with salinity, depending on K-feldspar present or not. For the mineral composition with K-feldspar present, CO2 mineral trapping capacity decreases with salinity, while with albite instead of K-feldspar, it increases with salinity owing to more precipitation of dawsonite. © 2016, Springer-Verlag Berlin Heidelberg.
语种：
英文
展开
Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive
作者：
Yao, Ya;Zhang, Xiaowen* ;Li, Mi;Yang, Rong;Jiang, Tianjiao;...
期刊：
Radiation Physics and Chemistry ,2016年127:188-193 ISSN：0969-806X
通讯作者：
Zhang, Xiaowen
作者机构：
[Yao, Ya; Yang, Rong; Jiang, Tianjiao] Univ South China, Sch Environm Protect & Safety Engn, Hengyang 42100, Peoples R China.;[Li, Mi; Lv, Junwen; Zhang, Xiaowen] Univ South China, Key Lab Radioact Waste Treatment & Disposal, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Zhang, Xiaowen] U;Univ South China, Key Lab Radioact Waste Treatment & Disposal, Hengyang 421001, Hunan, Peoples R China.
关键词：
Bismuth oxide;Compressive strength;Concrete;Lead oxide;Linear attenuation coefficient
摘要：
Concrete has a proven ability to attenuate gamma rays and neutrons without compromising structural property;therefore, it is widely used as the primary shielding material in many nuclear facilities. Recently, there is a tendency toward using various additives to enhance the shielding properties of these concrete mixtures. However, most of these additives being used either pose hygiene hazards or require special handling processes. It would be ideal if environmentally friendly additives were available for use. The bismuth oxide (Bi<inf>2</inf>O<inf>3</inf>) additive shows promise in various shielding applications due to its proven radiation attenuation ability and environmentally friendly nature. To the best of our knowledge, however, Bi<inf>2</inf>O<inf>3</inf>has never been used in concrete mixtures. Therefore, for this research, we fabricated the Bi<inf>2</inf>O<inf>3</inf>-based concrete mixtures by adding Bi<inf>2</inf>O<inf>3</inf>powder in the ordinary concrete mixture. Concrete mixtures with lead oxide (PbO) additives were used for comparison. Radiation shielding parameters like the linear attenuation coefficients (LAC) of all these concrete mixtures showing the effects of the Bi<inf>2</inf>O<inf>3</inf>additions are presented. The mechanical performances of concrete mixtures incorporated with Bi<inf>2</inf>O<inf>3</inf>additive were also investigated. It suggested that the concrete mixture containing 25% Bi<inf>2</inf>O<inf>3</inf>powder (B5 in this study) provided the best shielding capacity and mechanical performance among other mixes. It has a significant potential for application as a structural concrete where radiological protection capability is required. ©2016 Elsevier Ltd
语种：
英文
展开
生物技术处理含铀废水的研究进展
作者：
谭文发;吕俊文;唐东山
期刊：
生物技术通报 ,2015年31(3):82-87 ISSN：1002-5464
作者机构：
[谭文发; 吕俊文; 唐东山] 南华大学环境工程系;南华大学放射性三废处理与处置重点实验室
关键词：
含铀废水;微生物;转化;机理
摘要：
随着核能的大力推广与应用,放射性含铀废水的种类和数量越来越多,为防止水体中放射性核素迁移扩散,含铀放射性废水的有效处理成为一项亟待解决的问题。目前研究前沿的生物处理方法具有高效、价廉的优势,对于含铀废水的治理前景乐观。综述了近几年生物法处理含铀废水的进展,评述了生物法处理含铀废水的主要原理及其优缺点,并提出生物技术处理含铀废水的进一步研究方向。
语种：
中文
展开
Surfactant accelerating leaching of uranium ores
作者：
Yang Lv;Jun-wen Lv;Jian-liang Zhou;Jian Shen
期刊：
Advanced Materials Research ,2014年1051:182-186 ISSN：1022-6680
通讯作者：
Lv, J.-W.
作者机构：
[Zhou J.-L.; Lv Y.] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[Lv J.-W.] School of Environment Protection and Safety Engineering, University of South China, Hengyang, 421001, China;[Shen J.] School of Nuclear Resources Engineering, University of South China, Hengyang, 421001, China
通讯机构：
[Lv, J.-W.] S;School of Environment Protection and Safety Engineering, University of South ChinaChina
会议名称：
2014 International Conference on Green Materials and Environmental Engineering （GMEE2014）
会议时间：
2014-09-21
会议地点：
中国香港
会议论文集名称：
Proceedings of 2014 International Conference on Green Materials and Environmental Engineering (GMEE2014)
关键词：
Leaching rate of uranium;Permeability;Surface tension;Surfactant
摘要：
The effect of surfactant on improving the leaching rate of uranium was studied under both batch and column experiments. Batch experiments show that surfactant DMSS can improve the leaching rate and the the surface tension is decreased about 55.29%. 70 mg/l DMSS has the highest leaching rate of uranium, which close to the micellar concentration of DMSS. In the column study, with the addition of DMSS, the leaching rate of uranium is improved 8.3%. Thus the surfactant DMSS can accelerate leaching of uranium. © (2014) Trans Tech Publications, Switzerland.
语种：
英文
展开
Influence of Radionuclides on Farmland Soil and Creek Sediment Around a Uranium Mine in the Southwest of China
作者：
Lv, Junwen* ;Deng, Qinwen;Zhang, Yu
期刊：
MECHANICAL MATERIALS AND MANUFACTURING ENGINEERING III ,2014年455:23-27 ISSN：1662-7482
通讯作者：
Lv, Junwen
作者机构：
[Lv, Junwen; Zhang, Yu; Deng, Qinwen] Univ South China, Sch Environm Protect & Safety Engn, Hengyang, Peoples R China.
通讯机构：
[Lv, Junwen] U;Univ South China, Sch Environm Protect & Safety Engn, Hengyang, Peoples R China.
会议名称：
2013 3rd International Conference on Mechanical Materials and Manufacturing Engineering(ICMMME 2013)
会议时间：
2013-01-01
会议地点：
Shanghai,China
会议主办单位：
[Lv, Junwen;Deng, Qinwen;Zhang, Yu] Univ South China, Sch Environm Protect & Safety Engn, Hengyang, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Farmland soil;Creek sediment;Radionuclide;Influence
摘要：
The farmland soil and creek sediments in different depth in the mining area were sampled, and their content of 238U,226Ra and 232Th were determined by gamma spectrometric method to assess the impact of the soil environment by single index method. The result shows 232Th was not influenced on soil in survey area. 226Ra influenced more seriously than 238U on farmland soil, meanwhile, the farmland soil at downstream of tailings dam was contaminated seriously by radionuclides than at other places. For creak sediments ,adit water resulted in more serious pollution by 238U than 226Ra, however, tailings erosion resulted in more serious pollution by 226Ra than 238U.
语种：
英文
展开
中英土木工程专业培养方案的比较研究
作者：
邓钦文;吕俊文;杨金辉
期刊：
网友世界·云教育 ,2014年(14):189-190 ISSN：1671-7074
作者机构：
南华大学环境保护与安全工程学院环境工程系;南华大学城市建设学院市政工程系,湖南衡阳,421001;[杨金辉; 吕俊文; 邓钦文] 南华大学
关键词：
土木工程;培养方案;比较研究
摘要：
中国的土木工程行业飞速发展,在我国加入WTO与国际接轨以后,迫切需要一批国际化的专业土木工程人才。高校的土木工程师的培养改革迫在眉睫,合理制定土木工程专业的培养方案是培养国际化的专业人才的重要环节。本文通过比较中英两所大学该专业的培养方案,包括:培养目标、学习基本要求和课程设置,以及教师的授课方式等。通过比较研究借鉴其优势,并对培养方案的制订提出意见及建议。
语种：
中文
展开
红壤胶体对U(Ⅵ)的吸附性能及机理
作者：
夏良树;黄欣;曹存存;吕俊文;陈伟
期刊：
原子能科学技术 ,2013年47(10):1692-1699 ISSN：1000-6931
通讯作者：
Xia, L.-S.
作者机构：
[夏良树; 黄欣] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;[吕俊文] School of Environment Protection and Safety Engineering, University of South China, Hengyang 421001, China;[曹存存; 陈伟] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
通讯机构：
School of Nuclear Science and Technology, University of South China, China
关键词：
红壤胶体;吸附;机理
摘要：
采用静态法研究了某铀矿山附近土壤中的红壤胶体在不同pH值、离子强度、吸附平衡时间、铀溶液初始浓度、胶体用量、胶体粒径和有机质条件下对U (Ⅵ)的吸附影响,从热力学和动力学方面对吸附过程进行了分析,并通过元素分析、红外光谱(FT-IR)和扫描电镜(SEM)对吸附机理进行了初步探讨。实验结果表明:离子强度越小,胶体粒径越小,胶体对U(Ⅵ)的吸附量越大;单位质量红壤胶体对铀的吸附量随铀初始质量浓度的增大而增大,随红壤胶体用量的增大而减少;在25℃、pH值为3.5、离子强度为0.001 mol/L时,粒径小于1μm的红壤胶体的饱和吸附量q_(max)为76.76μg/mg。红壤胶体吸附铀酰离子前后的红外光谱表明,与吸附相关的主要基团为羟基、羰基、Si-O、Si-O-Fe等。红壤胶体对铀的吸附遵循Langmuir吸附等温线,符合准二级吸附动力学方程。
语种：
中文
展开
Transformation behaviors of U(VI) on irons hydroxide colloids
作者：
Tan, Yanpeng* ;Zhang, Xiaowen;Lv, Junwen;Tang, Dongshan;Su, Qin
期刊：
Advanced Materials Research ,2013年734-737:2563-2567 ISSN：1022-6680
通讯作者：
Tan, Yanpeng
作者机构：
[Tan, Yanpeng; Su, Qin] Univ South China, Sch Urban Construct, Hengyang 421001, Hunan, Peoples R China.;[Lv, Junwen; Zhang, Xiaowen; Tang, Dongshan] Univ South China, Sch Environm Protect & Safety Engn, Hengyang, Hunan, Peoples R China.
通讯机构：
[Tan, Yanpeng] U;Univ South China, Sch Urban Construct, Hengyang 421001, Hunan, Peoples R China.
会议名称：
2nd International Conference on Energy and Environmental Protection (ICEEP 2013)
会议时间：
APR 19-21, 2013
会议地点：
Guilin, PEOPLES R CHINA
会议主办单位：
[Tan, Yanpeng;Su, Qin] Univ South China, Sch Urban Construct, Hengyang 421001, Hunan, Peoples R China.^[Zhang, Xiaowen;Lv, Junwen;Tang, Dongshan] Univ South China, Sch Environm Protect & Safety Engn, Hengyang, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Adsorption;Iron hydroxide colloids;Uranium
摘要：
The presence of the colloid will affect uranium heap leaching. The objective of this study was the examination of the ability of colloid retardation to uranium by irons hydroxide colloids simulated heap leaching process. Batch studies have been carried by observing the effects of pH, contact time, uranium concentration. Iron hydroxide colloids can exist stably at pH 1.5-3.0. The size of the colloid samples is between 20 nm and 1000 nm. The sorption equilibrium was attained at 24 h. The load uranium capacity on iron hydroxide colloids are between 2.43×10-3 and 3.84×10-3 mmol/mol. The colloid morphology of before and after loaded uranium were identified using S-4800 scanning electron microscopy (SEM/EDS). The load uranium capacity on iron hydroxide colloids is least at pH=2, it implies that the appropriate pH of uranium heap leach is 2.0 on the point of retardation of colloid to uranium migration. © (2013) Trans Tech Publications, Switzerland.
语种：
英文
展开
土壤胶体对渗滤液中铀(Ⅵ)迁移影响的研究进展
作者：
曹存存;吕俊文;夏良树;陈伟
期刊：
核化学与放射化学 ,2012年34(1):1-7 ISSN：0253-9950
通讯作者：
Xia, L.-S.
作者机构：
[曹存存; 陈伟] 南华大学化学化工学院;[吕俊文] 南华大学环境保护与安全工程学院;[夏良树] 南华大学核资源与核燃料工程学院
通讯机构：
School of Nuclear Resources and Nuclear Fuel Engineering, University of South China, China
关键词：
土壤胶体;铀;重金属;迁移
摘要：
铀废石渗滤液中铀(Ⅵ)进入土壤后极易通过食物链对人类及周围环境产生危害。在已有研究基础上,简述了土壤胶体的来源和分类及其与铀(Ⅵ)的相互作用,重点讨论了土壤胶体结构、铀离子形态、土壤Eh-pH值、离子强度和有机质对溶液中铀(Ⅵ)的阻滞迁移影响,介绍了近年来土壤胶体在吸附溶液中铀(Ⅵ)的应用进展,提出了铀废石渗滤液中铀(Ⅵ)对环境的长期影响可能取得突破的几条途径。
语种：
中文
展开
