Fine tuning of pore size in metal-organic frameworks for superior removal of U(vi) from aqueous solution
作者：
Fu, Tianyu;Liu, Hongjuan;Wang, Xinyi;Liu, Yingjiu
期刊：
NEW JOURNAL OF CHEMISTRY ,2024年48(14):6211-6220 ISSN：1144-0546
通讯作者：
Liu, HJ
作者机构：
[Fu, Tianyu; Wang, Xinyi; Liu, Hongjuan; Liu, HJ] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Liu, Yingjiu] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reus, Hengyang 421001, Peoples R China.;[Liu, Hongjuan; Liu, HJ] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Min, Hengyang 421001, Peoples R China.
通讯机构：
[Liu, HJ ] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Min, Hengyang 421001, Peoples R China.
关键词：
Adsorption;Chemicals removal (water treatment);Naphthalene;Organometallics;Pore structure;Uranium dioxide;Adsorption performance;Fine tuning;Fumaric acids;Geometric dimensions;Metalorganic frameworks (MOFs);Naphthalene dicarboxylic acids;Organic chains;Pores structure;Synthesised;Terephthalic acids;Pore size;adsorbent;dicarboxylic acid;fumaric acid;metal organic framework;naphthalene;oxygen;terephthalic acid;uranium;adsorption;adsorption kinetics;aqueous solution;Article;complex formation;contact time;correlation coefficient;decomposition;desorption;diffusion;energy dispersive X ray spectroscopy;equilibrium constant;evaporation;Fourier transform infrared spectroscopy;geometry;heavy metal removal;pH;physical chemistry;pore size;pore size distribution;scanning electron microscopy;surface area;temperature;thermodynamics;X ray photoemission spectroscopy;X ray powder diffraction
摘要：
The pore structure of metal-organic frameworks (MOFs) is crucial to their adsorption performance, and it is still a challenge to precisely control the pore size to realize superior removal of uranium. The pore size of MOF-A, MOF-B and MOF-C was fine-tuned by using three organic chains with different lengths (fumaric acid, terephthalic acid and naphthalene dicarboxylic acid, respectively). The synthesized MOF-A, MOF-B and MOF-C had ordered increase in pore sizes with 3.8 Å, 5.7 Å and 7.6 Å, respectively. Pore size of 7.6 Å in MOF-C was a little larger than the geometric dimension of the UO22+ ion (maximum length 6.04-6.84 Å), which facilitated diffusion of UO22+ ions and achieved highly efficient adsorption. The maximum adsorption capacity (584 mg g−1) and removal rate (99.75%) of uranium for MOF-C were higher than those for MOF-A and MOF-B. The excellent adsorption performance of MOF-C was attributed to the specific pore structure of MOF-C and effective complexation of oxygen-containing groups with U(vi). Our work proposes a new strategy for the outstanding removal of uranium by using different organic chains to precisely regulate the pore size of MOF. © 2024 The Royal Society of Chemistry.
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Efficient uranium(VI) adsorbing bioinspired nano-sized hydroxyapatite composites: synthesis, tuning, and adsorption mechanism
作者：
Liu, Hongjuan;Wang, Xi;Li, Yongjiang;Min, Zefu;You, Hang;...
期刊：
Environmental Science and Pollution Research ,2023年30(7):18156-18167 ISSN：0944-1344
通讯作者：
Huaming Yang
作者机构：
[Liu, Hongjuan; Yang, Huaming] China Univ Geosci, Engn Res Ctr Nanogeomat, Minist Educ, Wuhan 430074, Peoples R China.;[Min, Zefu; Liu, Hongjuan; You, Hang; Wang, Xi; Li, Yongjiang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Yingjiu] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;[Yang, Huaming] China Univ Geosci, Key Lab Funct Geomat China Nonmet Minerals Ind, Wuhan 430074, Peoples R China.
通讯机构：
[Yang, Huaming] E;Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, People's Republic of China. hm.;Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan, 430074, People's Republic of China. hm.
关键词：
Uranium;Hydroxyapatite;Adsorption mechanisms;Chitosan;Wastewater
摘要：
The production of large amounts of uranium-containing wastewater and its potential hazards has stimulated green and efficient material removal of uranium (VI). Inspired by the natural mineralization of bone, a facile and eco-friendly biomimetic synthesis of nano-hydroxyapatite (HAP) was carried out using chitosan (CS) as a template. It was found that the reaction temperature and the amount of precursors influence the particle size, crystallinity and specific surface area of the CS/HAP nanorods, and consequently their U(VI) adsorption efficiency. Moreover, the synthesized CS/HAP-40 with smaller particle size, lower crystallinity, and larger specific surface area show a more efficient U(VI) removal compared with CS/HAP-55 and CS/HAP-55-AT. It has a maximum adsorption capacity of 294.12mg·g−1 of the CS/HAP-40. Interestingly, the U(VI) removal mechanism of CS/HAP-40 in acidic (pH = 3) and alkaline (pH = 8) aqueous solutions was found to be different. As one of the main results, the U(VI) adsorption mechanisms at pH 8 could be surface complexation and ion exchange. On the contrary, three different mechanisms could be observed at pH 3: dissolution–precipitation to form chernikovite, surface complexation, and ion exchange. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
语种：
英文
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3D ZnO modified biochar-based hydrogels for removing U(VI) in aqueous solution
作者：
Guo, Yu;Liu, Xiaoyang;Xie, Shuibo;Liu, Haiyan;Wang, Chenxu;...
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects ,2022年642:128606 ISSN：0927-7757
通讯作者：
Xie, Shuibo(xiesbmr@263.net)
作者机构：
[Guo, Yu; Xie, Shuibo; Wang, Chenxu; Wang, Lingzhi; Liu, Haiyan] 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.;[Liu, Xiaoyang] Water Resources Bur Ziyang Dist, Yiyang City 413001, Peoples R China.
通讯机构：
[Shuibo Xie] C;College of Civil Engineering, University of South China, Hengyang 421001, China<&wdkj&>Key Discipline Laboratory for National Defence of Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
关键词：
Adsorption mechanism;Adsorption properties;Modified biochar;Polyacrylamide gel;U(VI)
摘要：
A novel three dimensional ZnO modified biochar-based hydrogel (ZBCG) was fabricated and employed for removing U(VI) in aqueous solution. The ZBCG hydrogel, the successful loading of ZnO modified biochar (ZBC) confirmed by SEM and FTIR, has showed a well mechanical characteristics, thermal stability, anti-swelling property and adsorption performance for U(VI) than pure hydrogels (BG). At T = 40 ℃, pH = 5, the maximum adsorption capacity of the Langmuir model was 239.21 mg/g. According to adsorption kinetics tests, the chemical adsorption has occupied the leading status in the adsorption process of ZBCG for U(VI). More importantly, ZBCG could be quickly separated and easily regenerated. After 5 cycles of adsorption-desorption, ZBCG have kept the uranium adsorption efficiency of 78.88%. On account of spectroscopic analyses, the mechanisms between ZBCG and U(VI) were involved ion exchange with Zn2+ and chelation by -OH and -COOH. This study proved that ZBCG could be considered the effective and promising material for U(VI) removement from an aqueous solution. © 2022
语种：
英文
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Fabrication of environmentally sensitive amidoxime hydrogel for extraction of uranium (VI) from an aqueous solution
作者：
Liu, Xiaoyang;Xie, Shuibo* ;Wang, Guohua;Huang, Xin;Duan, Yi;...
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects ,2021年611:125813 ISSN：0927-7757
通讯作者：
Xie, Shuibo
作者机构：
[Huang, Xin; Duan, Yi; Xie, Shuibo; Liu, Haiyan; Liu, Xiaoyang; Wang, Guohua] 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.;[Xie, Shuibo] Univ South China, 28 Changshen Rd, Zhengxiang Dist 421001, Hengyang, Peoples R China.
通讯机构：
[Xie, Shuibo] U;Univ South China, 28 Changshen Rd, Zhengxiang Dist 421001, Hengyang, Peoples R China.
关键词：
Adsorption;Environmentally sensitive amidoxime hydrogel;Mechanisms;Uranium
摘要：
The main aim of this study is to evaluate the removal efficiency of U(VI) using an environmentally sensitive amidoxime hydrogel (AO-NIAMP). The sensitivity of the swelling behaviours to the temperature and pH of AO-NIAMP could promote the adsorption of uranium and facilitate the extraction out itself from solutions. Under the reaction pH of 6.0, and an initial U(VI) concentration o of 16.65 mg L−1,with 22.43 mg of AO-NIAMP, the maximum adsorption capacity was 36.3 mg g−1 as calculated by using response surface methodology (RSM). The adsorption process followed the pseudo-second-order and the Freundlich isotherm model. Moreover, AO-NIAMP showed a stable ability to remove U(VI) from a solution that contained multiple interfering metal ions. Based on spectroscopic analyses, the mechanisms of the removal of U(VI) by AO-NIAMP were the chelation of functional groups and electrostatic interactions. Additionally, the adsorption ability of sites on AO-NIAMP for UO22+ was calculated by density functional theory (DFT),which determined the following orders: oxime nitrogen > [sbnd]CO[dbnd] > oxime type O and N[sbnd](C(NH[sbnd]2)N[dbnd]OH) > oxime oxygen > [sbnd]SO3H. AO-NIAMP could maintain a uranium adsorption rate of 82.5 % after four adsorption (at 30 °C) - desorption (at 40 °C) cycles. By having good swelling properties triggered by external stimuli and the ability to remove uranium, AO-NIAMP has the potential to serve as a uranium extractor. © 2020 Elsevier B.V.
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The performance and mechanism of U(VI) removal from aqueous solutions by a metal–organic framework (DUT-69)
作者：
Chen, Xiang;Xie, Shuibo;Wang, Guohua;Liu, Haiyan;Guo, Yu;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2021年328(1):181-194 ISSN：0236-5731
通讯作者：
Shuibo Xie
作者机构：
[Guo, Yu; Wu, Shanshan; Xie, Shuibo; Liu, Haiyan; Liu, Xiaoyang; Wang, Guohua; Yang, Siqin; Chen, Xiang] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Haiyan] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
通讯机构：
[Shuibo Xie] S;School of Civil Engineering, University of South China, Hengyang, China<&wdkj&>Key Discipline Laboratory for National Defence of Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China
关键词：
metal organic framework;uranium;zirconium;adsorption;aqueous solution;Article;chemical bond;complex formation;concentration (parameter);static electricity;synthesis
摘要：
A zirconium-based metal–organic framework (DUT-69) was fabricated via a hydrothermalsynthesis for U(VI) removal in aqueous solutions. Experimental results showed that the maximum adsorption capacity for U(VI) was 362.32mg·g−1 at 303K, pH = 6 and initial U(VI) concentration of 80mg L−1. The adsorption process fit well with the pseudo-second-order kinetic and Langmuir models. Various characterizations indicated that complexation interactions was the central adsorption mechanism and electrostatic was the secondary. The carboxyl, Zr–O, and C–S bonds in the framework participated in the adsorption process. Reusability experiments showed that 80.34% adsorption rate could be maintained after 5 cycles. © 2021, Akadémiai Kiadó, Budapest, Hungary.
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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.
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英文
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An investigation on physical, mechanical, leaching and radiation shielding behaviors of barite concrete containing recycled cathode ray tube funnel glass aggregate
作者：
Liu, Hualiang;Shi, Jianjun;Qu, Huiqiong;Ding, Dexin*
期刊：
Construction and Building Materials ,2019年201:818-827 ISSN：0950-0618
通讯作者：
Ding, Dexin
作者机构：
[Ding, Dexin; Shi, Jianjun; Liu, Hualiang] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.;[Ding, Dexin; Shi, Jianjun; Liu, Hualiang] Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Hunan, Peoples R China.;[Ding, Dexin; Qu, Huiqiong] Univ South China, Nucl Resources Engn Coll, Hengyang 421001, Peoples R China.
通讯机构：
[Ding, Dexin] U;Univ South China, Nucl Resources Engn Coll, Hengyang 421001, Peoples R China.
关键词：
Alkali-silica reaction expansion;Barite concrete;Dry shrinkage;Funnel glass;Lead leaching;MCNP;Physical and mechanical behaviors;Radiation shielding;Waste cathode ray tube;XCOM
摘要：
In order to explore the feasibility of using hazardous waste cathode ray tube (CRT) funnel glass to replace high density mineral aggregates in the radiation shielding concrete, various barite concrete samples were prepared with portland cement, ground funnel glass sand as the substitute for barite aggregates, and fly ash as mineral admixtures, and the rates of funnel glass for fine and coarse (5–10 mm) barite aggregate were 25%, 50%, 75%, 100% and 10%, 20%, 30%, respectively. The work performance, mechanical properties, dry shrinkage, alkali-silica reaction (ASR) expansion and lead leaching were investigated, and the γ-ray attenuation coefficients were obtained by experiment, XCOM program and MCNP code. The results show that the slump, ASR expansion and lead leaching of the concrete increase while its apparent density, mechanical properties, dry shrinkage, and γ-ray shielding properties decrease with the increase of the rate of funnel glass. Adding fly ash to the concrete can inhibit the leaching of Pb, and reduce the ASR expansion. The concrete samples with 25–50% fine funnel glass sand or 10–20% 5–10 mm coarse aggregate have good performances. The results show that it's efficient, economical and environmental-benign to use funnel glass to produce the high density radiation shielding concrete. © 2019 Elsevier Ltd
语种：
英文
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Synthesis of polyethylenimine/graphene oxide for the adsorption of U(VI) from aqueous solution
作者：
Liu, Hongjuan* ;Zhou, Yuancheng;Yang, Yibo;Zou, Ke;Wu, Renjie;...
期刊：
Applied Surface Science ,2019年471:88-95 ISSN：0169-4332
通讯作者：
Liu, Hongjuan;Xie, Shuibo
作者机构：
[Xia, Ke; Liu, Hongjuan; Yang, Yibo; Wu, Renjie; Zhou, Yuancheng; Zou, Ke] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, HJ] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
通讯机构：
[Liu, HJ; Xie, SB] U;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
Adsorption;Graphene oxide;Polyethyleneimine;U(VI)
摘要：
Polyethyleneimine (PEI)/graphene oxide (GO) was synthesized through a self-assembly method with the formation of the amide group –CONH– between –NH 2 on PEI and –COOH on GO. The formation was confirmed by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The oxygen- and nitrogen-containing functional groups of PEI/GO were involved in the adsorption of U(VI), as determined under the FT-IR and XPS analyses of PEI/GO and U(VI)-adsorbed PEI/GO. The pH, contact times, and initial concentration, which are the factors influencing the removal of U(VI), were investigated. The adsorption of U(VI) onto PEI/GO was fitted well with the pseudo-second-order kinetic model and Langmuir isotherm model. The maximum sorption capacities of U(VI) on PEI/GO (145.14 mg·g −1 ) at pH = 7 and T = 303 K were higher than that of U(VI) on GO (94.61 mg·g −1 ). This study provides a novel and simple method for synthesizing GO derivatives with efficient adsorption performances of U(VI) from aqueous solution. © 2018
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英文
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Analysis of uranium removal capacity of anaerobic granular sludge bacterial communities under different initial pH conditions.
作者：
Zeng, Taotao* ;Li, Licheng;Mo, Guanhai;Wang, Guohua;Liu, Haiyan;...
期刊：
Environmental Science and Pollution Research ,2019年26(6):5613-5622 ISSN：0944-1344
通讯作者：
Zeng, Taotao;Xie, Shuibo
作者机构：
[Xie, Shuibo; Zeng, TT; Mo, Guanhai; Liu, Haiyan; Zeng, Taotao; Li, Licheng; Wang, Guohua] 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, TT; Xie, SB; Xie, Shuibo] U;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.
关键词：
Bacterial community;Uranium removal;Anaerobic granular sludge;pH
摘要：
The bacterial community of an anaerobic granular sludge associated with uranium depletion was investigated following its exposure to uranium under different initial pH conditions (pH4.5, 5.5, and 6.5). The highest uranium removal efficiency (98.1%) was obtained for the sample with an initial pH of 6.5, which also supported the highest bacterial community richness and diversity. Venn diagrams visualized the decrease in the number of genera present in both the inoculum and the uranium-exposed biomass as the initial pH decreased from 6.5 to 4.5. Compared with the inoculum, a significant increase in the abundances of the phyla Chloroflexi and Proteobacteria was observed following uranium exposure. At initial pH conditions of 6.5 to 4.5, the proportions of the taxa Anaerolineaceae, Chryseobacterium, Acinetobacter, Pseudomonas, and Sulfurovum increased significantly, likely contributing to the observed uranium removal. Uranium exposure induced a greater level of dynamic diversification of bacterial abundances than did the initial pH difference. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
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英文
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Poly (β-cyclodextrin)/bentonite composite: synthesis mechanism and adsorption property for cesium in water
作者：
Liu, Hongjuan* ;Xie, Shuibo* ;Zhang, Xichen;Liu, Yingjiu;Zeng, Taotao
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2018年318(3):2117-2127 ISSN：0236-5731
通讯作者：
Liu, Hongjuan;Xie, Shuibo
作者机构：
[Liu, Hongjuan] Univ South China, Inst Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Liu, Hongjuan; Xie, Shuibo; Liu, HJ] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Yingjiu; Zhang, Xichen; Zeng, Taotao] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
通讯机构：
[Liu, Hongjuan; Liu, HJ; Xie, SB; Xie, Shuibo] U;Univ South China, Inst Nucl Sci & Technol, Hengyang 421001, Peoples R China.;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
关键词：
bentonite;beta cyclodextrin;cesium;water;adsorption kinetics;aqueous solution;Article;concentration (parameters);controlled study;energy dispersive X ray spectroscopy;Fourier transform infrared spectroscopy;limit of quantitation;polymerization;scanning electron microscopy;synthesis;thermogravimetry;X ray photoemission spectroscopy
摘要：
A poly(β-Cyclodextrin)/bentonite composite (β-CD/BNC) were characterized by N2–BET measurement, scanning electron microscopy, energy dispersive spectrometer, fourier transform infrared spectroscopy, thermogravimetric analysis and X-ray photoelectron spectroscopy. Its synthesis mechanism of graft polymerisation was expounded. The maximum sorption capacities of Cs+ onto β-CD/BNC in absence and presence of Cl− and CO3 2− were 48.83mgg−1, 48.90mgg−1, and 46.19mgg−1, respectively. The effect of Cl− and CO3 2− on Cs+ adsorption was not obvious. β-CD/BNC displayed good stability and reusability. The main adsorption mechanism of cesium by β-CD/BNC was ion exchange, and the surface coordination was subordinated mechanism. © 2018, Akadémiai Kiadó, Budapest, Hungary.
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英文
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Novel graphene oxide/bentonite composite for uranium(VI) adsorption from aqueous solution
作者：
Liu, Hongjuan* ;Xie, Shuibo* ;Liao, Ju;Yan, Tianrun;Liu, Yingjiu;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2018年317(3):1349-1360 ISSN：0236-5731
通讯作者：
Liu, Hongjuan;Xie, Shuibo
作者机构：
[Liu, Hongjuan; Liao, Ju; Yan, Tianrun] Univ South China, Inst Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Yingjiu] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;[Tang, Xinhai] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China.
通讯机构：
[Liu, Hongjuan; Xie, Shuibo] U;Univ South China, Inst Nucl Sci & Technol, Hengyang 421001, Peoples R China.;Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
关键词：
adsorbent;bentonite;bentonite graphene oxide composite;graphene oxide;unclassified drug;uranium;adsorption;adsorption kinetics;aqueous solution;Article;controlled study;cross linking;energy dispersive X ray spectroscopy;Fourier transform infrared spectroscopy;heavy metal removal;ionic strength;isotherm;pH;scanning electron microscopy;structure analysis;surface area;temperature;thermodynamics;thermogravimetry;waste water management;X ray diffraction
摘要：
A novel graphene oxide/bentonite composite (GO/bentonite) was synthesized and then characterized through powder X-ray diffraction, fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and energy dispersive spectroscopy. Adsorption achieved equilibrium within 10min. Moreover, U(VI) adsorption on GO/bentonite was highly dependent on solution pH and independent of ionic strength. These characteristics suggested that inner-sphere surface complexes of U(VI) formed on GO/bentonite. The adsorption of U(VI) from aqueous solution on GO/bentonite was fitted to the pseudo-second-order and Freundlich isotherm models. The maximum sorption capacity of GO/bentonite was 234.19mgg−1 under neutral pH at 303K. GO/bentonite is a potentially powerful adsorbent for the efficient removal of U(VI) from aqueous solutions. © 2018, Akadémiai Kiadó, Budapest, Hungary.
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英文
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Removal of Cr(VI) from electroplating industry effluent via electrochemical reduction
作者：
Li, Shiyou;Hu, Zhongqing;Xie, Shuibo;Liu, Haiyan;Liu, Jinxiang*
期刊：
International Journal of Electrochemical Science ,2018年13(1):655-663 ISSN：1452-3981
通讯作者：
Liu, Jinxiang
作者机构：
[Hu, Zhongqing; Xie, Shuibo; Liu, Haiyan; Liu, Jinxiang; Li, Shiyou] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.;[Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Liu, Jinxiang] U;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
关键词：
Pollution management;Electrode configuration;Industry Effluent;Electrochemical reduction;Cr(VI) removal
摘要：
In the present work, an electrochemical reduction process with iron and titanium electrodes was investigated for hexavalent chromium (Cr(VI)) removal. The removal of Cr(VI) and its resulting species was investigated by measuring the efficiency of the electrochemical reduction treatment. For the Cr(VI) removal, a lower performance was found for the titanium electrode than the iron electrode. Therefore, the resulting Cr(VI) reduction, which occurred through electrochemical reduction using iron electrodes, was chemical reduction by the anodically generated Fe(II). Furthermore, the resulting Cr(III) was efficiently precipitated as Cr(OH)3 and was rapidly removed from solution. © 2018 The Authors.
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英文
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Study on Occurrence Speciation and Activity of Uranium Tailing Contaminants in the Presence of S.oneidensis MR-1 under Anaerobic Conditions
作者：
Xichen Zhang;Shuibo Xie;Hongjuan Liu;Yingjiu Liu
期刊：
IOP Conference Series: Earth and Environmental Science ,2018年170(3):032087 ISSN：1755-1307
通讯作者：
Xie, S.
作者机构：
[Zhang X.; Liu Y.] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China;Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China;Institute of Nuclear Science and Technology, University of South China, Hengyang, China;[Xie S.] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China<&wdkj&>Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, China;[Liu H.] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China<&wdkj&>Institute of Nuclear Science and Technology, University of South China, Hengyang, China
通讯机构：
Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China
关键词：
Bacteria;Biogeochemistry;Biological materials;Chemical analysis;Extraction;Iron oxides;Manganese oxide;Metals;Minerals;Natural resources exploration;Organic compounds;Sustainable development;Uranium;Amorphous iron;Anaerobic conditions;Iron manganese oxide;Occurrence modes;Reaction system;Research object;Sequential batch;Sequential chemical extraction methods;Tailings
摘要：
Taked a uranium tailings pond in Hunan province as the research object, three groups of reaction systems including min (mineral group), min-dbio (mineral-dead bacteria) and min-bio (mineral-viable bacteria) were set up for the sequential batch experiments. The metal elements of U, Fe, Cd, and Pb in the uranium tailings which have reacted with S. oneidensis MR-1 for 2d, 4d, 10d, and 20d were studied by the sequential chemical extraction methods, to analyzed the effect of species of contaminants in Uranium Tailings by S. oneidensis MR-1. The results showed that the residual state is the main occurrence mode of each metal element. The release of contaminants from tailings is mainly attributed to the dissolution of exchangeable state. The complexation or adsorption of the dead bacteria and metal elements leads to the increase of the organic matter. The effect of S.oneidensis MR-1 promoted the release of each metal elements in the exchangeable state, carbonate binding state, organic matter binding state and the amorphous iron manganese oxide binding state of tailings sample, and the reduction of S. oneidensis MR-1 caused U6+ to produce U4+, resulting in an increase in the content of residuals, while Fe3+ was reduced to Fe2+, resulted in an increase in the binding state of crystalline iron-manganese oxides. © Published under licence by IOP Publishing Ltd.
语种：
英文
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Effect of coexisting cations on the adsorption of cesium onto poly (β-cyclodextrin)/bentonite composite
作者：
Liu, Hongjuan;Xie, Shuibo* ;Wang, Tiancheng;Liu, Yingjiu;Zeng, Taotao
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2017年312(3):557-565 ISSN：0236-5731
通讯作者：
Xie, Shuibo
作者机构：
[Liu, Hongjuan; Xie, Shuibo] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.;[Wang, Tiancheng; Liu, Hongjuan] Univ South China, Inst Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Xie, Shuibo; Liu, Yingjiu; Zeng, Taotao] 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.;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.
关键词：
bentonite;cation;cesium;magnesium;poly(beta cyclodextrin);polymer;sodium;unclassified drug;adsorption;adsorption kinetics;Article;binding affinity;energy dispersive X ray spectroscopy;infrared spectroscopy;pH;polymerization;temperature;thermodynamics;waste water management
摘要：
A novel poly(β-cyclodextrin)/bentonite composite (β-CD/BNC) was successfully prepared through graft polymerisation by using ammonium persulphate–sodium bisulphate as initiators, and characterized by FT-IR and EDS. The equilibrium data fit Freundlich isotherm satisfactorily. Adsorption kinetic was fitted with pseudo-second-order. The maximum adsorption capacities for Cs+ by β-CD/BNC in absence and presence of Na+ and Mg2+ were 48.83±0.35, 47.30±0.28, and 42.52±0.85mgg−1, respectively. Adsorption of Cs+ was suppressed by presence of Mg2+ more than Na+. β-CD/BNC had a higher affinity to Cs+ than Na+ and Mg2+. β-CD/BNC was an effective sorbent for the treatment cesium waste water. © 2017, Akadémiai Kiadó, Budapest, Hungary.
语种：
英文
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