蒙脱土/Fe_3O_4/腐殖酸复合材料对U(Ⅵ)的作用机制
作者：
司子彦;谢水波;朱奥琦;王国华;刘迎九;...
期刊：
材料工程 ,2021年49(3):158-166 ISSN：1001-4381
通讯作者：
Xie, Shui-Bo(xiesbmr@263.net)
作者机构：
[司子彦; 谢水波; 朱奥琦; 王国华; 刘迎九; 莫官海] School of Civil Engineering, University of South China, Hengyang;421000, China;Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang;[司子彦; 谢水波; 朱奥琦; 王国华; 刘迎九; 莫官海] 421000, China;[谢水波; 刘迎九] 421000, China<&wdkj&>Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang
通讯机构：
[Xie, S.-B.] S;School of Civil Engineering, China
关键词：
蒙脱土/Fe_3O_4/腐殖酸复合材料;吸附剂;吸附;还原;络合
摘要：
通过水热法制备蒙脱土/Fe_(3)O_(4)/腐殖酸复合材料(MFH),探究pH值、MFH的投加量、吸附时间、U(Ⅵ)初始浓度及温度等因素对MFH吸附U(Ⅵ)的影响。结果表明:在所选实验条件范围内,MFH的投加量对其吸附U(Ⅵ)的影响最大;当U(Ⅵ)初始浓度为5 mg·L^(-1),pH值为6,MFH投加量为0.3 g·L^(-1),温度为30℃时,MFH对U(Ⅵ)去除在30 min后达到平衡,此时去除率达到97.7%;MFH对U(Ⅵ)的吸附符合准二级动力学模型和Langmuir模型;MFH对U(Ⅵ)的去除机理为络合作用和还原作用。再生实验表明,经5次吸附-解吸后,MFH复合材料对U(Ⅵ)的吸附率仍在90%以上,表明MFH对U(Ⅵ)的去除效果较好且具有高效重复利用性。
语种：
中文
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MNO_2 /FeOOH复合材料对水中U(Ⅵ)的去除及机理试验研究
作者：
谢水波;王越;胡忠清;王国华;刘迎九
期刊：
安全与环境学报 ,2021年21(01):373-382 ISSN：1009-6094
作者机构：
[王国华; 王越; 刘迎九; 胡忠清] 南华大学土木工程学院;南华大学污染控制与资源化技术湖南省重点实验室;[谢水波] 南华大学土木工程学院<&wdkj&>南华大学污染控制与资源化技术湖南省重点实验室
关键词：
环境工程学;二氧化锰;羟基氧化铁;铀;吸附
摘要：
采用化学沉积法制备了二氧化锰/羟基氧化铁（MnO2/FeOOH）复合材料,并将其用于吸附去除水中的放射性重金属铀。通过静态吸附试验,考察了Fe/Mn物质的量比、pH值、吸附时间和干扰离子等因素对MnO2/FeOOH吸附U（Ⅵ）效果的影响,利用扫描电镜-能谱分析（SEM-EDS）、X射线衍射（XRD）、拉曼光谱（Raman）、红外光谱（FT-IR）和X射线光电子能谱（XPS）对材料结构和形貌进行表征,并分析其吸附机理。结果表明,在投加量为150 mg/L、温度为30℃、U（Ⅵ）初始质量浓度为10 mg/L、pH值为5、Fe/Mn物质的量比为1/2及吸附时间为120 min的条件下,MnO2/FeOOH对U（Ⅵ）的去除率最大可达97.7%,且pH值对铀去除效果的影响最为明显。MnO2/FeOOH对U（Ⅵ）吸附动力学符合准二级动力学模型,吸附等温线均能符合Langmuir和Freundlich模型,且最大吸附容量达260.34 mg/g。干扰离子试验表明,SO42-、CO32-和Fe3+对MnO2/FeOOH吸附U （VI）几乎没有影响,而Ca2+和Cu2+具有明显的抑制作用,且抑制随浓度的增大而增强。FTIR和XPS分析表明MnO2/FeOOH对U（Ⅵ）的主要作用机制为表面羟基、Mn-O与铀的配位作用。因此,MnO2/FeOOH可作为一种潜在的铀吸附材料。
语种：
中文
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聚吡咯/石墨相氮化碳光催化材料的制备及其铀降解性能研究
作者：
俞坤;葛玉杰;谢水波;刘迎九;刘金香
期刊：
应用化工 ,2021年50(01):35-38 ISSN：1671-3206
作者机构：
[刘迎九; 刘金香; 俞坤; 葛玉杰] 南华大学土木工程学院;南华大学污染控制与资源化技术湖南省重点实验室;[谢水波] 南华大学土木工程学院<&wdkj&>南华大学污染控制与资源化技术湖南省重点实验室
关键词：
聚吡咯;石墨相氮化碳;光催化;铀
摘要：
为了提高g-C3N4的光催化性能,通过原位聚合法制备了PPy/g-C3N4复合材料。通过SEM、XRD、BET和FTIR等表征手段研究PPy/g-C3N4的微观形貌、化学组成以及光催化降解铀的性能。结果表明,PPy抑制了g-C3N4晶粒的生长,提高了g-C3N4的比表面积。在降解时间60 min,pH=5,U（VI）初始浓度5 mg/L,光催化剂投加量200 mg/L的条件下,g-C3N4和PPy/g-C3N4复合材料对U（VI）的降解率分别为83.11%和96.20%。重复使用3次后,PPy/g-C3N4对U（VI）的降解率仍达92.4%。
语种：
中文
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Fabrication and Optimization of the Thermo-Sensitive Hydrogel Carboxymethyl Cellulose/Poly(N-isopropylacrylamide-co-acrylic acid) for U(VI) Removal from Aqueous Solution
作者：
Tan, Juan;Xie, Shuibo* ;Wang, Guohua;Yu, Chuck Wah;Zeng, Taotao;...
期刊：
Polymers ,2020年12(1):151 ISSN：2073-4360
通讯作者：
Xie, Shuibo
作者机构：
[Tan, Juan; Zeng, Taotao; Wang, Guohua; Yu, Chuck Wah] Univ South China, Coll Civil Engn, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Huang, Huayong; Cai, Pingli] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Peoples R China.
通讯机构：
[Xie, Shuibo] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
U(VI);adsorption;orthogonal experiments;thermo-sensitive hydrogel;wastewater treatment
摘要：
In this work, the thermo-sensitive materials N-isopropylacrylamide (NIPAM) and acrylic acid (AA) were crosslinked with carboxymethyl cellulose (CMC) (CMC/P (NIPAM-co-AA) via a free radical polymerization method for the removal of U(VI) from aqueous solution. The L16 (45) orthogonal experiments were designed for the optimization of the synthesis condition. The chemical structures of the crosslinking hydrogel were confirmed by FTIR spectroscopy. The microstructural analyses were conducted though scanning electron microscopy (SEM) to show the pore structure of the hydrogel. The adsorption performance of the CMC/P (NIPAM-co-AA) hydrogel for the uptake of U(VI) from simulated wastewater was also investigated. The adsorption reached equilibrium within 1 h. Under the reaction of pH = 6 and a temperature of 298 K, an initial concentration of U(VI) of 5 mg L-1, and 10 mg of the CMC/P(NIPAM-co-AA) hydrogel, the maximum adsorption capacity was 14.69 mg g-1. The kinetics fitted perfectly with the pseudo-second-order model, and the isotherms for the composite hydrogel adsorption of U(VI) was in accordance with the Langmuir model. The chemical modification confirmed that the acylamino group played an important role in uranium adsorption. The desorption and reusability study revealed that the resolution rate was still available at approximately 77.74% after five alternate heating cycles at 20 and 50 °C of adsorption-desorption. © 2020 by the authors.
语种：
英文
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聚吡咯/石墨相氮化碳复合材料吸附铀（Ⅵ）的性能与机制
作者：
俞坤;刘金香;谢水波;刘迎九;葛玉杰
期刊：
材料导报 ,2020年(23):23020-23026 ISSN：1005-023X
作者机构：
1. 南华大学土木工程学院;2. 南华大学污染控制与资源化技术湖南省重点实验室
关键词：
石墨相氮化碳;聚吡咯;铀;吸附
摘要：
以石墨相氮化碳（g-C3N4）、聚吡咯（PPy）为原料,采用原位聚合法制备聚吡咯/石墨相氮化碳（PPy/g-C3N4）复合材料,探究PPy/g-C3N4对水中U（Ⅵ）的吸附性能。研究pH值、温度、PPy/g-C3N4投加量、反应时间、U（Ⅵ）初始浓度等影响因素对PPy/g-C3N4吸附U（Ⅵ）的影响。结果表明:在pH=5、U（Ⅵ）初始浓度为5 mg/L、PPy/g-C3N4的投加量为200 mg/L、吸附时间为20 min的条件下,PPy/g-C3N4对U（Ⅵ）的最大吸附率为93.22%。PPy/g-C3N4对U（Ⅵ）的吸附等温线符合Freundlich模型,吸附动力学符合准二级动力学。SEM-EDS、XRD分析表明,本工作成功制得了PPy/g-C3N4复合材料。XPS和FTIR结果说明,PPy/g-C3N4中的含碳、氮官能团和含氧官能团与U（Ⅵ）发生络合作用,从而显著提高了其吸附性能。
语种：
中文
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Microbial characteristic and bacterial community assessment of sediment sludge upon uranium exposure
作者：
Zeng, Taotao* ;Mo, Guanhai;Hu, Qing;Wang, Guohua;Liao, Wei;...
期刊：
Environmental Pollution ,2020年261(Jun.):114176 ISSN：0269-7491
通讯作者：
Zeng, Taotao
作者机构：
[Liao, Wei; Xie, Shuibo; Mo, Guanhai; Zeng, Taotao; Wang, Guohua; Hu, Qing] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
通讯机构：
[Zeng, Taotao] U;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
关键词：
Uranium;Bacterial community;High-throughput sequencing;Microbial characteristic
摘要：
The microbial characteristics and bacterial communities of sediment sludge upon different concentrations of exposure to uranium were investigated by high solution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and high-throughput sequencing. After exposure to initial uranium concentrations of 10-50 mu M for 24 h in synthetic wastewater, the removal efficiencies of uranium reached 80.7%-96.5%. The spherical and short rod bacteria were dominant in the sludge exposed to uranium. HRTEM-EDS and XPS analyses indicated that reduction and adsorption were the main mechanisms for uranium removal. Short-term exposure to low concentrations of uranium resulted in a decrease in bacterial richness but an increase in diversity. A dramatic change in the composition and abundances of the bacterial community were present in the sediment sludge exposed to uranium. The highest removal efficiency was identified in the sediment sludge exposed to 30 mu M uranium, and the dominant bacteria included Acinetobacter (44.9%), Klebsiella (20.0%), Proteiniclasticum (6.7%), Enterobacteriaceae (6.6%), Desulfovibrio (4.4%), Porphyromonadaceae (4.1%), Comamonas (2.4%) and Sedimentibacter (2.3%). By comparison to the inoculum sediment sludge, exposure to uranium caused a substantial difference in the majority of bacterial abundance. (C) 2020 Elsevier Ltd. All rights reserved.
语种：
英文
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β-环糊精改性介孔二氧化硅材料对U(Ⅵ)的去除机制
作者：
朱奥琦;谢水波;司子彦;刘迎久;莫官海
期刊：
原子能科学技术 ,2020年54(10):1753-1761 ISSN：1000-6931
通讯作者：
Xie, Shuibo(xiesbmr@263.net)
作者机构：
[朱奥琦; 司子彦; 莫官海] School of Civil Engineering, University of South China, Hengyang;421001, China;[谢水波; 刘迎久] Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang;[朱奥琦; 谢水波; 司子彦; 刘迎久; 莫官海] 421001, China
通讯机构：
Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang, China
关键词：
介孔二氧化硅;β-环糊精;吸附
摘要：
以三乙氧基(3-异氰酸丙基)硅为交联剂,通过后接枝法合成了β-环糊精改性介孔二氧化硅(SBA-15-CD)材料.通过静态吸附试验研究了溶液pH值、SBA-15-CD投加量、吸附时间、温度等因素对SBA-15-CD吸附U(Ⅵ)的影响.通过扫描电镜(SEM)、X射线粉末衍射(XRD)、BET比表面分析、傅里叶红外光谱(FT-IR)和X射线光电子能谱(XPS)对材料进行表征分析,并探讨了SBA-15-CD吸附U(Ⅵ)的机制.结果表明,当U(Ⅵ)初始浓度为5 mg/L、温度为30℃时,SBA-15-CD吸附U(Ⅵ)的最佳条件为:pH=5、SBA-15-CD投加量0.20 g/L、吸附平衡时间30 min,在此条件下,平衡吸附量为24.4 mg/g,U(Ⅵ)去除率为98.3％.吸附过程符合准二级动力学模型和Langmuir等温模型,即以化学吸附为主,且主要是通过表面的羟基、酯基和氨基与U(Ⅵ)配位.30℃下SBA-15-CD的饱和吸附量达330 mg/g,升高温度有利于吸附的进行.SBA-15-CD具有良好的重复使用性能.
语种：
中文
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高大空间建筑自动喷水灭火数值模拟研究
作者：
黄晓家;赵耀;谢水波;吴懂礼;杨世全;...
期刊：
中国给水排水 ,2020年36(17):6-12 ISSN：1000-4602
作者机构：
[黄晓家; 吴懂礼] 中国中元国际工程有限公司;南华大学土木工程学院;[赵耀; 谢水波; 尧炜杰; 杨世全] 南华大学
关键词：
高大空间建筑;自动喷水灭火系统;真实物品数值模拟;标准燃烧物;喷水强度;响应时间指数
摘要：
基于实体灭火试验,利用FDS数值模拟软件探究了净空高度为18 m的高大空间建筑自动喷水灭火系统不同喷水强度和响应时间指数(RTI)对灭火效果的影响。结果表明,喷水强度为30 L/(min·m^2)时,自动喷水灭火系统能快速抑制火灾;喷水强度为20 L/(min·m^2)时,喷头及时动作或开放多个喷头可实现控火;喷水强度为15 L/(min·m^2)时,由于喷水强度较小,水滴直接送达燃料表面的量很少,但在开放更多的喷头情况下,水能有效湿润燃烧物周边的可燃物,从而有效控火。根据不同参数下的真实物品数值模拟,对喷头动作时间、启动个数、控火时间、过火面积、物品损失,以及系统的可靠性等多方面比较,提出了工程应用设计参数,建议此类场所下喷头的喷水强度为20 L/(min·m^2),喷头响应类型采用快速响应。
语种：
中文
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基于贝叶斯网络的商场火灾概率估算研究
作者：
杨世全;黄晓家;谢水波;吴懂礼;赵耀;...
期刊：
消防科学与技术 ,2020年39(10):1380-1383 ISSN：1009-0029
作者机构：
南华大学土木工程学院;[吴懂礼] 中国中元国际工程有限公司;[赵耀; 尧伟杰; 黄晓家; 谢水波; 张雷; 杨世全] 南华大学
关键词：
安全管理;消防;贝叶斯网络;商场火灾
摘要：
针对人员密集场所之一商场的火灾问题,分析了商场火灾的特点,对火灾致灾因子进行分析,构建商场火灾的贝叶斯网络模型,采用国家统计局及《中国消防年鉴》《佛山统计年鉴》多年统计数据计算节点的初始概率,根据贝叶斯网络的传递原则计算商场火灾的发生概率。结果表明,贝叶斯方法可有效应用到火灾风险分析与管理中。
语种：
中文
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基于FDS的高架仓库火灾自动喷水灭火研究
作者：
黄晓家;尧炜杰;谢水波;赵耀;杨世全;...
期刊：
给水排水 ,2020年46(12):68-75 ISSN：1002-8471
作者机构：
[黄晓家] 中国中元国际工程有限公司;南华大学土木工程学院;[赵耀; 谢水波; 张雷; 尧炜杰; 杨世全] 南华大学
关键词：
高架仓库;自动喷水;快速响应喷头;喷水强度;工程参数
摘要：
利用FDS对标准燃烧体及三层货架仓库进行真实物品的仿真建模,探究了不同流量K系数分别为202、161、115下,以及不同喷水压力0.4 MPa、0.3 MPa、0.2 MPa及临界喷水强度16.3 L/(min·m2)下的ESFR喷头灭火效果.模拟结果表明当喷水强度小于16.3 L/(min·m2)便不能实现抑火而喷水强度取值27.1～36.1 L/(min·m2)是合理的,同时提出了合理工程设计参数.
语种：
中文
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U(VI) removal efficiency and mechanism of biochars derived from sewage sludge at two pyrolysis temperatures
作者：
Zeng, Taotao* ;Mo, Guanhai;Zhang, Xiaoling;Liu, Jinxiang;Liu, Hongjuan;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2020年326(2):1413-1425 ISSN：0236-5731
通讯作者：
Zeng, Taotao
作者机构：
[Xie, Shuibo; Zhang, Xiaoling; Mo, Guanhai; Liu, Jinxiang; Zeng, Taotao] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;[Liu, Hongjuan] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构：
[Zeng, Taotao] U;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
关键词：
adsorption;article;complex formation;desorption;ion exchange;isotherm;pyrolysis;radioactive wastewater;regeneration;sewage;waste water management
摘要：
In this study, sewage sludge-derived biochars (SSBs) were prepared at two pyrolysis temperatures of 450°C (SSB450) and 600°C (SSB600) for U(VI) removal. The maximum adsorption capacity of SSB450 and SSB600 was 43.13 and 47.47mgg-1, respectively, at initialpH of 3. While the adsorption process of U(VI) onto the SSBs were accurately described by the pseudo-second-order model and Langmuir isotherm model. Ion exchange and complexation were assumed as the adsorption mechanism. The adsorption–desorption experiment showed that both the U(VI) removal efficiency and SSB regeneration efficiency were greater than 80%. Thus, the SSB has a potential application in U(VI)-containing wastewater treatment. © 2020, Akadémiai Kiadó, Budapest, Hungary.
语种：
英文
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基于多种LID模式的深圳市内涝防治研究
作者：
孙波;谢水波;王志远;吴浩祎;刘慧
期刊：
人民长江 ,2020年51(06):17-22 ISSN：1001-4179
作者机构：
南华大学建筑学院,湖南衡阳421001;南华大学湖南省健康城市营造工程技术研究中心,湖南衡阳421001;南华大学土木工程学院,湖南衡阳421001;深圳市坪山区规划国土事务中心,广东深圳518118;[王志远; 谢水波; 孙波; 刘慧] 南华大学
关键词：
内涝防治;径流控制;洪峰流量;低影响开发（LID）模式;SWMM模型;海绵城市
摘要：
随着城镇化进程的不断加快,不透水面面积不断增加,城市内涝问题也日益严重。为有效降低城市雨洪内涝出现频率及其影响破坏,选取深圳市光明区光明凤凰城新城公园周围区域,通过SWMM模型构建区域降雨径流模型,对比分析了4种单独布置方案与1种组合布置方案对于区域内径流总量和洪峰总量削减的效果。结果表明:①在削减径流总量方面,LID组合效果最佳,其次是生物滞留池、透水铺装、雨水桶,绿色屋顶最差;②在削减洪峰总量、推迟洪峰时间方面, LID组合效果最佳,其次是生物滞留池、透水铺装、绿色屋顶,最差的是雨水桶。
语种：
中文
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聚吡咯/石墨相氮化碳复合材料吸附铀(Ⅵ)的性能与机制
作者：
俞坤;刘金香;谢水波;刘迎九;葛玉杰
期刊：
材料导报 ,2020年34(23):23020-23026 ISSN：1005-023X
作者机构：
南华大学土木工程学院,衡阳421001;南华大学污染控制与资源化技术湖南省重点实验室,衡阳421001;[葛玉杰; 刘金香; 俞坤; 谢水波; 刘迎九] 南华大学
关键词：
石墨相氮化碳;聚吡咯;铀;吸附
摘要：
以石墨相氮化碳(g-C_3N_4)、聚吡咯(PPy)为原料,采用原位聚合法制备聚吡咯/石墨相氮化碳(PPy/g-C_3N_4)复合材料,探究PPy/g-C_3N_4对水中U(Ⅵ)的吸附性能。研究pH值、温度、PPy/g-C_3N_4投加量、反应时间、U(Ⅵ)初始浓度等影响因素对PPy/g-C_3N_4吸附U(Ⅵ)的影响。结果表明:在pH= 5、U(Ⅵ)初始浓度为5 mg/L、PPy/g-C_3N_4的投加量为200 mg/L、吸附时间为20 min的条件下,PPy/g-C_3N_4对U(Ⅵ)的最大吸附率为93.22%。PPy/g-C_3N_4对U(Ⅵ)的吸附等温线符合Freundlich模型,吸附动力学符合准二级动力学。SEM-EDS、XRD分析表明,本工作成功制得了PPy/g-C_3N_4复合材料。XPS和FTIR结果说明,PPy/g-C_3N_4中的含碳、氮官能团和含氧官能团与U(Ⅵ)发生络合作用,从而显著提高了其吸附性能。
语种：
中文
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SWMM辅助海绵城市专项规划的指标分解方法研究
作者：
刘慧;谢水波;曾凡勇;孙波
期刊：
中国农村水利水电 ,2020年(5):73-77+83 ISSN：1007-2284
作者机构：
南华大学建筑学院,湖南 衡阳421001;南华大学土木工程学院,湖南 衡阳421001;[曾凡勇; 谢水波; 孙波; 刘慧] 南华大学
关键词：
海绵城市;年径流总量控制率;指标分解
摘要：
《指南》提出了试算法与模型模拟法对海绵城市专项规划中的年径流总量控制率这一刚性指标进行分解落实,但由于《指南》尚处于试行阶段未对如何运用模型模拟法进行指标分解作出解答,且以SWMM为典型代表的水文水力模拟研究也较少以此作为切入点展开探讨。因此,研究借助SWMM模型探索出一条具有普遍适用性的指标分解途径,通过现状评估、刚性指标分解及引导性指标分解三个阶段完成年径流总量管控指标的分解,并借助案例对分解赋值方法进行详尽阐述,愿能为今后海绵城市专项规划的编制工作提供些许参考。
语种：
中文
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基于贝叶斯网络的酒店火灾概率评估
作者：
张雷;黄晓家;谢水波;吴懂礼;杨世全;...
期刊：
消防科学与技术 ,2020年39(7):916-919+934 ISSN：1009-0029
作者机构：
南华大学土木工程学院;[吴懂礼] 中国中元国际工程有限公司;[赵耀; 黄晓家; 谢水波; 张雷; 杨世全] 南华大学
关键词：
消防安全;权重分析;贝叶斯网络;酒店火灾
摘要：
为加强酒店场所对火灾风险的预警和管理工作,对《中国消防年鉴》及广东省东莞市火灾数据进行分析总结并查阅相关文献,建立了基于贝叶斯网络的酒店火灾风险模型,采用权重占比法计算出了东莞市酒店火灾发生概率,使用软件Genie2.1对东莞市酒店火灾风险因素建模,并对各火灾风险进行了敏感性分析,识别对火灾风险影响显著的因素,针对显著因素提出酒店的火灾风险改进意见。
语种：
中文
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Investigation of a modified metal-organic framework UiO-66 with nanoscale zero-valent iron for removal of uranium (VI) from aqueous solution
作者：
Yang, Fan;Xie, Shuibo* ;Wang, Guohua;Yu, Chuck Wah;Liu, Haiyan;...
期刊：
Environmental Science and Pollution Research ,2020年27(16):20246-20258 ISSN：0944-1344
通讯作者：
Xie, Shuibo
作者机构：
[Yang, Fan; Liu, Haiyan; Wang, Guohua; Yu, Chuck Wah] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Liu, Yingjiu] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
通讯机构：
[Xie, Shuibo] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
Metal-organic frameworks;UiO-66;Nanoscale zero-valent iron;U(VI) adsorption;nZVI reduction;U(VI) removal
摘要：
A novel composite material (nZVI/UiO-66) of nanoscale zero-valent iron (nZVI) with a functionalized metal-organic framework was synthesized by this study via a coprecipitation method, which was used for the efficient removal of U(VI) in the aqueous solution. The nZVI/UiO-66 had an excellent removal capacity of 404.86mgg−1 with an initial U(VI) concentration of 80mgL−1, 313K and pH = 6. The transmission electron microscopy (TEM) revealed that nZVI particles were inhomogeneously distributed on the surface of UiO-66. The analysis by the X-ray diffraction (XRD) has further illustrated that the introduction of nZVI did not change the structure of UiO-66. The adsorption process closely followed the pseudo-second-order kinetic and the Freundlich isotherm model. The removal process of U(VI) by nZVI/UiO-66 was spontaneous and endothermic. Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses have illustrated that the mechanism was mainly related to adsorption of U(VI) from UiO-66 and reduction of U(VI) by nZVI. The Zr-O bonds were shown to play a vital role in the uranium removal. nZVI/UiO-66 could be recycled. The uptake rate could be maintained at around 80% after 5cycles of use. Therefore, these results manifested that the nZVI/UiO-66 is a promising sorbent for the efficient and selective removal of U(VI) in radioactive wastewaters. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
语种：
英文
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Manganese ferrite/porous graphite carbon nitride composites for U(VI) adsorption from aqueous solutions
作者：
Ge, Yujie;He, Zhiqiang;Wu, Jiao;Wang, Guohua;Xie, Shuibo;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2020年326(1):157-171 ISSN：0236-5731
通讯作者：
Liu, Jinxiang
作者机构：
[Ge, Yujie; Xie, Shuibo; Wu, Jiao; Wang, Guohua; He, Zhiqiang] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Jinxiang] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Peoples R China.
通讯机构：
[Liu, Jinxiang] U;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Peoples R China.
关键词：
carbon;ferrite;graphite;manganese;oxygen;uranium;adsorption kinetics;aqueous solution;Article;chemical interaction;chemical reaction kinetics;desorption;ecosystem restoration;ionic strength;isotherm;pH;polymerization;radioactive wastewater;synthesis;thermodynamics;X ray photoemission spectroscopy
摘要：
Manganese ferrite/porous graphite carbon nitride composites (MnFe2O4/porous g-C3N4[PCN]) were synthesized by template-assisted thermal polymerization and hydrothermal method and applied for high adsorption of U(VI) from aqueous solution. Results indicated that the maximum adsorption capacity of MnFe2O4/PCN (MPCN) was 367.9mgg−1 under optimum conditions (pH = 5, t = 15min, and T = 308K), which was higher than that of g-C3N4 (185.1mgg−1). Adsorption was well fitted with Langmuir isotherm model and pseudo-second-order kinetic equation. Thermodynamic analysis showed that adsorption is an endothermic, spontaneous process. X-ray photoelectron spectra revealed that amino and metal oxygen groups are involved in the complexing adsorption of uranium. Adsorption efficiency remained 92.5% after five adsorption–desorption cycles. The results of this paper indicated that MnFe2O4/PCN composites can be efficiently used as an ideal material for U(VI) adsorption. © 2020, Akadémiai Kiadó, Budapest, Hungary.
语种：
英文
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Study on Flood Control in Multi-LID Model Based on SWMM
作者：
Sun, Bo;Xie, Shuibo* ;Wang, Zhiyuan;Wu, Haoyi;Liu, Hui
作者机构：
[Sun, Bo; Wang, Zhiyuan; Liu, Hui] Univ South China, Sch Architecture, Hengyang, Peoples R China.;[Xie, Shuibo] Univ South China, Sch Civil Engn, Hengyang, Peoples R China.;[Wu, Haoyi] Planning & Land Affairs Ctr, Shenzhen, Guangdong, Peoples R China.
会议名称：
International Low Impact Development Conference (LID)
会议时间：
JUL 20-24, 2020
会议地点：
Bethesda, MD
会议主办单位：
[Sun, Bo;Wang, Zhiyuan;Liu, Hui] Univ South China, Sch Architecture, Hengyang, Peoples R China.^[Xie, Shuibo] Univ South China, Sch Civil Engn, Hengyang, Peoples R China.^[Wu, Haoyi] Planning & Land Affairs Ctr, Shenzhen, Guangdong, Peoples R China.
会议论文集名称：
International Low Impact Development Conference 2020<&wdkj&>International Low Impact Development Conference 2020<&wdkj&>International Low Impact Development Conference 2020
摘要：
With the acceleration of the urbanization process, and the increase of the impervious surface area, the problems of urban waterlogging are becoming more and more serious. How to effectively reduce the frequency of urban rain and flooding and its impact and destruction has become a major problem in urban construction. This paper selects the area around Guangming Phoenix New City Park in Guangming District, Shenzhen, constructs regional rainfall runoff model by SWMM model, and simulates the operation of the existing drainage network and the degree of waterlogging under six types of rainstorm return period of 1a, 3a, 5a, 10a, 20a, and 50a. Consequently, on this basis, four kinds of low impact development (LID) measures including separating the placement of bioretention cells, green roof, permeable paving, and rain barrels, and combined arrangement as the fifth schemes, are used to stimulate the reduction of the regional total runoff and total peak flow. By the comparison, in the current state of study, LID combination has the best effect in reducing the total runoff, followed by the bioretention cells, permeable paving, and rain barrels; green roof is the worst. In terms of reducing total peak flow and delaying the time of peak flow, LID combination is the best, followed by bioretention cells, permeable paving, and green roof; the worst is rain barrels. In basis of this to consider the problem of combining low impact development measures with the sponge city special plan. In the future, it is expected to inspire the construction of sponge cities in south coastal cities, especially the low impact development measures.
语种：
英文
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自动喷水灭火技术的发展与回顾
作者：
黄晓家;赵耀;谢水波;吴懂礼;杨世全;...
期刊：
给水排水 ,2020年46(8):84-89 ISSN：1002-8471
作者机构：
[黄晓家; 吴懂礼] 中国中元国际工程有限公司;南华大学土木工程学院;[赵耀; 谢水波; 尧炜杰; 杨世全] 南华大学
关键词：
自动喷水灭火系统;响应时间指数;实际洒水密度;必需洒水密度;早期抑制快速响应喷头;特殊应用控火型喷头
摘要：
回顾了自动喷水灭火系统的发展历程,介绍了响应时间指数、实际洒水密度、必需洒水密度、灭火临界条件等自动喷水核心技术,概述了大水滴喷头、早期抑制快速响应喷头、特殊应用控火型喷头等喷头技术的应用。
语种：
中文
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Properties and characterization of a metakaolin phosphate acid–based geopolymer synthesized in a humid environment
作者：
Dong, Teng;Xie, Shuibo* ;Wang, Jingsong;Chen, Zhenfu;Liu, Qing
期刊：
Journal of the Australian Ceramic Society ,2020年56(1):175-184 ISSN：2510-1560
通讯作者：
Xie, Shuibo
作者机构：
[Dong, Teng; Wang, Jingsong; Xie, Shuibo; Chen, Zhenfu; Liu, Qing] Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.;[Dong, Teng; Xie, Shuibo] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Xie, Shuibo] U;Univ South China, Sch Civil Engn, Hengyang 421001, Hunan, Peoples R China.;Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Aluminum;Aluminum compounds;Geopolymers;Inorganic polymers;Leaching;Molar ratio;Phosphoric acid;Pore size;Calcined kaolins;Capillary pores;Geopolymer;Geopolymerization;High-humidity environment;Humid environment;Metakaolins;Structural unit;Silicon
摘要：
To synthesize a metakaolin phosphate acid-based geopolymer (PAG), calcined kaolin and phosphoric acid solutions with phosphorus-to-aluminium molar ratios (P/Al) of 0.6 to 1.0 were prepared. Fresh PAG was cured in a high-humidity environment at 50°C for 7days. High humidity is helpful for generating AlPO4 during the geopolymerization of PAG. Si and Al are depolymerized from metakaolin upon attack of H3PO4, and the amounts of leached Si and Al are directly proportional to P/Al. Leached Al increases with time, while leached Si decreases and then becomes stable. Pyrophosphate and hexa-coordinate Al could be components of the basic structural unit of PAG. Porosity and cracking increased with increasing P/Al and reduced the strength of PAG. The degree of shrinkage and the pore size are directly proportional to P/Al. The concentrated pores in PAG are gel pores, transitional pores and capillary pores corresponding to different P/Al ratios. © 2019, Australian Ceramic Society.
语种：
英文
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