作者：
Hamza, Mohammed F.;Guibal, Eric;Althumayri, Khalid;Wei, Yuezhou;Eid, Ahmed M.;...
期刊：
Chemical Engineering Journal,2023年454:140155 ISSN：1385-8947
通讯作者：
Guibal, Eric(eric.guibal@mines-ales.fr)
作者机构：
[Wei, Yuezhou; Hamza, Mohammed F.] Univ South China, Sch Nucl Sci & Technol, Heng Yang 421001, Peoples R China.;[Hamza, Mohammed F.] Nucl Mat Author, POB 530, Cairo, Egypt.;[Guibal, Eric] IMT Mines Ales, Polymers Compos & Hybrids PCH, Ales, France.;[Althumayri, Khalid] Taibah Univ, Coll Sci, Dept Chem, Al Madinah Al Munawarah 30002, Saudi Arabia.;[Wei, Yuezhou] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China.
通讯机构：
[Eric Guibal] P;[Yuezhou Wei] S;Polymers Composites and Hybrids (PCH), IMT Mines Ales, Alès, France<&wdkj&>School of Nuclear Science and Technology, University of South China, Heng Yang 421001, China<&wdkj&>School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
关键词：
Easy synthesis of a highly efficient sorbent for cesium through ready condensation of acetamido-aminomethanesulfonic acid (via formaldehyde reaction);Fast cesium uptake onto microparticles (fitted by the pseudo-first order rate equation);Good sorption performance in seawater;Limited toxicity against Gram+ and Gram- bacteria and pathogenic yeast, reduced cytotoxicity against normal cells (but inhibiting cancerous cells);Remarkable desorption and sorbent recycling using 0.3 M HNO3 solution;Selectivity against alkali and alkali-earth metal ions
摘要：
A new sorbent (ACES-F micro-particles) is readily synthesized by the one-pot reaction of N-(2-acetamido)-2-aminoethanesulfonic acid with formaldehyde (poly-condensation reaction). The mesoporous sorbent is charac-terized by BET analysis (SBET: approximate to 6 m2 g-1), SEM-EDX (N: approximate to 7-8 % and S: 5 %), FTIR spectroscopy (identification of amine, sulfonic groups and their interactions with metal ions), TGA, elemental analysis, and titration (pHPZC: approximate to 5.7). The study of pH effect on Cs(I) shows an optimum close to 8 (with intermediary optimum at pH 4, associated with different reactive groups). The micron-size sorbent shows fast sorption (equilibrium in 60 min) and the pseudo-first order rate equation fits the kinetic profile. The sorption isotherm reaches up to 1.99 mmol Cs g-1; the Langmuir equation models isotherm profiles. The sorption decreases with increasing temperature; sorption is exothermic. Cesium uptake is affected by the presence of NaCl; however, even in large excess of salt (i. e., 4 M) sorption remains relatively high (loss <60 %). Selectivity is confirmed by the remarkable preference of the sorbent for Cs against alkali and other competitor metal ions, especially at pHeq approximate to 7. Metal desorption is highly effective using 0.3 M HNO3 solutions: complete desorption occurs in 30 min. The sorbent can be recycled for at least five cycles (losses <3 %). The interest of ACES-F for cesium recovery from seawater is confirmed by the study of Cs(I) sorption (and other major elements) from Vietnam and Egypt samples. The safety of the sorbent for aqueous bodies is evaluated by the cytotoxicity of the sorbent (limited against normal cells but highly reactive for cancerous cells); while the sorbent shows interesting antimicrobial properties for Gram+, Gram-and path-ogenic yeast.
作者机构：
[Wei, Yuezhou; Hamza, Mohammed F.] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Hamza, Mohammed F.] Nucl Mat Author, POB 530, Cairo, Egypt.;[Guibal, Eric] IMT Mines Ales, Polymers Compos & Hybrids PCH, Ales, France.;[Wei, Yuezhou] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China.;[Fouda, Amr] Al Azhar Univ, Fac Sci, Bot & Microbiol Dept, Cairo 11884, Egypt.
通讯机构：
[Guibal, E.] P;[Wei, Y.] S;Polymers Composites and Hybrids (PCH), France;School of Nuclear Science and Technology, China
关键词：
An efficient magnetic composite sorbent was synthesized by incorporation of magnetite nanoparticles into polymer matrix (obtained by formaldehyde polycondensation of guanidine and amino hydroxynaphthalene sulfonic acid);Temkin equations fitted sorption isotherms while uptake kinetics are successfully modeled with the pseudo-first order rate equation;The sensitivity of uranyl ions to reduction explains the complementary metal sorption and enhanced selectivity under UV irradiation for both synthetic and complex industrial solutions;UV exposure improves the stability of sorption properties at recycling (uranium being fully desorbed using nitric acid solution);UV irradiation allows to both increase uranium sorption capacity and enhance uptake kinetics
作者机构：
[余清远; 赵鹏程] School of Nuclear Science and Technology, University of South China, Hunan, Hengyang;421001, China;[马誉高; 张英楠] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu;610213, China;Department of Engineering Physics, Tsinghua University, Beijing
作者机构：
[于涛; 赵鹏程; 赵亚楠; 杨涛] School of Nuclear Science and Technology, University of South China, Hunan, Hengyang;421001, China;Hunan Engineering and Technology Research Center for Virtual Nuclear Reactor, University of South China, Hunan, Hengyang;[于涛; 赵鹏程; 赵亚楠; 杨涛] 421001, China<&wdkj&>Hunan Engineering and Technology Research Center for Virtual Nuclear Reactor, University of South China, Hunan, Hengyang;[于涛; 赵鹏程; 赵亚楠; 杨涛] 421001, China
作者：
Hamza, Mohammed F.;Guibal, Eric;Wei, Yuezhou;Ning, Shunyan
期刊：
Chemical Engineering Journal,2023年464:142638 ISSN：1385-8947
通讯作者：
Wei, YZ;Guibal, E
作者机构：
[Ning, Shunyan; Wei, Yuezhou; Hamza, Mohammed F.] Univ South China, Sch Nucl Sci & Technol, Heng Yang 421001, Peoples R China.;[Guibal, Eric; Guibal, E] IMT Mines Ales, Polymers Compos & Hybrids PCH, Ales, France.;[Wei, Yuezhou] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China.
通讯机构：
[Wei, YZ ] U;[Guibal, E ] I;Univ South China, Sch Nucl Sci & Technol, Heng Yang 421001, Peoples R China.;IMT Mines Ales, Polymers Compos & Hybrids PCH, Ales, France.;Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China.
关键词：
The functionalization of the copolymer of;maleic anhydride withN;N'-methylenebisacrylamide (MaMb) obtained by;the reaction of pristine sorbent with thiocarbazide (TcMaMb) increases the density;and diversity of reactive groups;The chemical derivative strongly enhances the;sorption properties of the material for Th(IV);removal;Faster kinetics are obtained together with doubled sorption capacity at saturation;The selectivity for thorium binding from;complex synthetic solutions (especially at pH;>4) and real ore leachate (in acidic solution but;with lower sorption capacities) is enhanced by;the grafting of thiocarbazide;The readily functionalization of MaMb with thiocarbazide opens promising perspective for;the recovery of thorium from complex solutions
作者机构：
[Lei, Zeyong; Deng, Jian; Lei, ZY; Zhong, Lin] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Wang, Guolong; Deng, Jian] Univ South China, Sch Mech Engn, Hengyang 421001, Peoples R China.;[Lei, Jieheng] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.;[Zhao, Mu] China Nucl Ind 24 Construct Co Ltd, Beijing 102400, Peoples R China.
通讯机构：
[Lei, ZY ] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
304SS;cobalt;deposition;spinel;primary loop
摘要：
The radioactive corrosion products (58)Co and (60)Co in the primary loops of pressurized water reactors (PWRs) are the main sources of radiation doses to which workers in nuclear power plants are exposed. To understand cobalt deposition on 304 stainless steel (304SS), which is the main structural material used in the primary loop, the microstructural characteristics and chemical composition of a 304SS surface layer immersed for 240 h in borated and lithiated high-temperature water containing cobalt were investigated with scanning electron microscopy (SEM), X-ray diffraction (XRD), laser Raman spectroscopy (LRS), X-ray photoelectron spectroscopy (XPS), glow discharge optical emission spectrometry (GD-OES), and inductively coupled plasma emission mass spectrometry (ICP-MS). The results showed that two distinct cobalt deposition layers (an outer layer of CoFe(2)O(4) and an inner layer of CoCr(2)O(4)) were formed on the 304SS after 240 h of immersion. Further research showed that CoFe(2)O(4) was formed on the metal surface by coprecipitation of the iron preferentially dissolved from the 304SS surface with cobalt ions from the solution. The CoCr(2)O(4) was formed by ion exchange between the cobalt ions entering the metal inner oxide layer and (Fe, Ni) Cr(2)O(4). These results are useful in understanding cobalt deposition on 304SS and have a certain reference value for exploring the deposition behavior and mechanism of radionuclide cobalt on 304SS in the PWR primary loop water environment.
通讯作者：
Su, Zhe'an(suza@csu.edu.cn);Liao, Jingjing(511839026@qq.com)
作者机构：
[Tang, Xian; Xie, Xiangmin; Liao, Jingjing] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Xiangmin; Huang, Qizhong; Su, Zhe'an] Cent South Univ, Natl Key Lab Sci & Technol Natl Def High strength, Changsha 410083, Peoples R China.;[Yang, Cheng] Hunan Changyu Sci & Technol Dev Co Ltd, Changsha 410600, Peoples R China.
通讯机构：
[Zhe'an Su] N;[Jingjing Liao] S;National Key Laboratory of Science and Technology for National Defence on High-strength Structural Materials, Central South University, Changsha, 410083, PR China<&wdkj&>School of Nuclear Science and Technology, University of South China, Hengyang, 421001, PR China
关键词：
SiC-Si coating;SiC nanowires;Thermal evaporation;Gaseous silicon infiltration;Oxidation and ablation behaviours
通讯机构：
[Xiaohua Yang] U;University of South China, School of Nuclear Science and Technology, Hengyang, Hunan, 421000, China<&wdkj&>University of South China, School of Computing/Software, Hengyang, Hunan, 421000, China
关键词：
Nuclear power plant;PCTRAN;AutoPCTRAN;CNN-LSTM;fault diagnosis
作者机构：
[杨超; 于涛; 陈珍平] School of Nuclear Science and Technology, University of South China, Hunan, Hengyang;421001, China;[李志鹏] Institute of Applied Physics and Computational Mathematics, Beijing;100088, China;[杨超; 于涛; 陈珍平] 421001, China
作者机构：
[梁乐华; 王雪鉴; Zeng, Wenjie; 李楚豪] School of Nuclear Science and Technology, University of South China, Hunan, Hengyang;421001, China;Department of Nuclear engineering design and Research, China Institute of Atomic Energy, Beijing;102413, China;[梁乐华; 王雪鉴; 李楚豪] 421001, China
通讯机构：
[Yun Liao; Meng Wang] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China<&wdkj&>Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang, Hunan 421001, China<&wdkj&>School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China
通讯机构：
[Jinsen Xie; Jianliang Zhou] A;Authors to whom correspondence should be addressed.<&wdkj&>School of Nuclear Science and Technology, University of South China, Hengyang 421000, China
关键词：
nuclear power plant;PCTRAN;deep learning;fault diagnosis;deep LSTM
