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Selective removal and immobilization of cesium from aqueous solution using sludge functionalized with potassium copper hexacyanoferrate: a low-cost adsorbent. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07964-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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52
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Karabayir E, Taskin OS, Ozdemir A, Senkal BF. Effective removal of 137Cs ions from radioactive wastewater by Melamine-Styrene based Polymer (MSP). Appl Radiat Isot 2021; 176:109912. [PMID: 34418728 DOI: 10.1016/j.apradiso.2021.109912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/26/2021] [Accepted: 08/15/2021] [Indexed: 11/17/2022]
Abstract
Cesium (Cs) is a major product of uranium fission, which is one of the most existed radionuclides in radioactive wastes. Removal of Cs-137 has a critical role in the decontamination of liquid radioactive waste due to its half-life of 30.17 years. Concordantly, melamine styrene based conjugated polymer (MSP) was designed, synthesized, and characterized with FTIR, TGA, SEM and BET measurements. The novelty of the study is that the MSP adsorbent is designed as a highly conjugated structure to have better interaction with Cs over the Cs-π bond of the benzene groups of the adsorbent. In this work, the adsorption behavior and rate of MSP were investigated as parameters of adsorbent amount, pH, contact time, particle size, initial Cs+ concentration, and temperature. Besides, the adsorption efficiency of Cs-137 was examined by Gamma Spectroscopy. Adsorption results were fitted to three different isotherms which were Freundlich, Langmuir and Dubinin-Radushkevich (D-R). The maximum adsorption capacity of polymer for Cs+ ion was found from Langmuir isotherm as 78 mg g-1. As a part of kinetic parameters, pseudo first and second orders were investigated and in terms of the correlation coefficient pseudo second order was much more appropriate for adsorption of Cs-137 onto MSP.
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Affiliation(s)
- Erhan Karabayir
- Turkish Energy, Nuclear and Mineral Research Agency, Nuclear Energy Research Institute, TR34303, K. Cekmece, Istanbul, Turkey; Department of Chemistry, Sakarya University, TR54187, Serdivan, Sakarya, Turkey.
| | - Omer S Taskin
- Istanbul University, Institute of Marine Science and Management, Department of Chemical Oceanography, Fatih, 34134, Istanbul, Turkey.
| | - Abdil Ozdemir
- Department of Chemistry, Sakarya University, TR54187, Serdivan, Sakarya, Turkey
| | - B Filiz Senkal
- Istanbul Technical University, Faculty of Science and Letters, Department of Chemistry, Maslak, 34469, Istanbul, Turkey
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53
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Huo JB, Yu G, Wang J. Magnetic zeolitic imidazolate frameworks composite as an efficient adsorbent for arsenic removal from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125298. [PMID: 33951874 DOI: 10.1016/j.jhazmat.2021.125298] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 01/29/2021] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
In this study, magnetic zeolitic imidazolate frameworks (ZIF-8) was prepared by a one-step method, where its evolution involved the coprecipitation reactions concomitant with the self-assembly reactions. Structural characterizations indicated that magnetic ZIF-8 showed irregular polyhedral morphology with a large specific surface area (696.5 m2/g) and saturation magnetization (4.31 emu/g). The as-prepared magnetic ZIF-8 enhanced the adsorption performance of As(III) and As(V), compared with bare Fe3O4. The pseudo second-order kinetic model (R2 = 0.9627 and 0.9893 for As(III) and As(V), respectively) and the Langmuir model (R2 = 0.9441 for As(III) and 0.9851 for As(V)) can fit the adsorption process well, confirming the nature of single-layer homogeneous chemisorption. The adsorption capacity was 30.87 and 17.51 mg/g, and their corresponding values of PC were 2.664 and 1.286 L/g, for As(III) and As(V), respectively. Solution pH showed an adverse effect on As(V) adsorption whereas no obvious effect on As(III). The ionic strength and coexisting ions had not obvious influence on adsorption of As(III) and As(V). The adsorption mechanism was explored and discussed based on the detailed spectroscopy analysis. This adsorbent can be recovered magnetically after use, which is promising for the practical application.
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Affiliation(s)
- Jiang-Bo Huo
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China
| | - Guoce Yu
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, China.
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54
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Huo J, Yu G, Wang J. Efficient removal of Co(II) and Sr(II) from aqueous solution using polyvinyl alcohol/graphene oxide/MnO 2 composite as a novel adsorbent. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125117. [PMID: 33858095 DOI: 10.1016/j.jhazmat.2021.125117] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/02/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
In this study, a novel adsorbent, polyvinyl alcohol/graphene oxide/MnO2 composite was prepared, characterized and used for efficient removal of Co2+ and Sr2+ from aqueous solution. Polyvinyl alcohol (PVA) and Mn2+ played a synergistic role in the gelation of PVA/GO/Mn2+, while Mn2+ can be further converted into oxide to achieve functionalized aerogel (PVA/GO/MnO2). The spectroscopy analysis manifested that hydrogen bonds and electrostatic attraction were responsible for the formation of PVA/GO/MnO2. The functionalization of MnO2 enhanced the adsorption capacity for Co2+ (2.1 folds) and Sr2+ (1.3 folds) by PVA/GO/MnO2. The composite showed high adsorption capacity at broad pH range of 4.0-9.0. For competitive adsorption test, Ni2+/Zn2+ exerted the most interfering effect on Co2+ adsorption, while Mg2+/Ca2+ showed severe interfering effect on Sr2+ adsorption. Both electrostatic attraction and oxygen-containing groups contributed to the adsorption mechanism. This study may provide a new adsorbent for separation of Co2+ and Sr2+ from aqueous solution.
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Affiliation(s)
- Jiangbo Huo
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, China
| | - Guoce Yu
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, China.
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55
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Chen S, Yang X, Wang Z, Hu J, Han S, Guo Y, Deng T. Prussian blue analogs-based layered double hydroxides for highly efficient Cs + removal from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124608. [PMID: 33243651 DOI: 10.1016/j.jhazmat.2020.124608] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/14/2020] [Accepted: 11/16/2020] [Indexed: 06/11/2023]
Abstract
In this work, novel Prussian blue analogs-based layered double hydroxide (PBA@ZnTi-LDH) was in situ synthesized and used for radioactive Cs+ removal from wastewater. The results suggested that this PBA@ZnTi-LDH prepared using LDH as skeleton and transition metal source showed higher adsorption capacity (243.9 mg/g) and water stability than conventional PBAs, and promising application in scale-up Cs+ removal. Thus, it was granulated by calcium alginate and the PBA@ZnTi-LDH/CaALG exhibited favorable post-separation and fixed-bed adsorption ability at different Cs+ concentrations and flow rates, highlighting its application perspective on Cs+ removal from various kinds of wastewater. Moreover, the real-world Cs+ removal was preliminarily explored using natural complex Cs+-containing water. As a result, this stable and easily separated PBA@ZnTi-LDH/CaALG showed high removal efficiency, selectivity and good reusability, which was promising in scale-up Cs+ removal from the real-world wastewater.
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Affiliation(s)
- Shangqing Chen
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Xiaonan Yang
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zheng Wang
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jiayin Hu
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Senjian Han
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Yafei Guo
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Tianlong Deng
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
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56
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Xing H, Yang L, Wang L, Li M, Yu J, Lu D, Ye G, Liu H. Ion effects on the extraction of cesium (I) by 1,3-Diisopropoxycalix [4] arenecrown-6(BPC6) and the highly efficient extraction under neutral conditions. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2021.1922153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Huifang Xing
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, China
| | - Liangrong Yang
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, China
| | - Lu Wang
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, China
| | - Mengfang Li
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, China
| | - Jiemiao Yu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Diannan Lu
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Gang Ye
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
| | - Huizhou Liu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, China
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57
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Liu W, Liu X, Chang J, Jiang F, Pang S, Gao H, Liao Y, Yu S. Efficient removal of Cr(VI) and Pb(II) from aqueous solution by magnetic nitrogen-doped carbon. Front Chem Sci Eng 2021. [DOI: 10.1007/s11705-020-2032-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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58
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Li J, Jin J, Zou Y, Sun H, Zeng X, Huang X, Feng M, Kanatzidis MG. Efficient Removal of Cs + and Sr 2+ Ions by Granulous (Me 2NH 2) 4/3(Me 3NH) 2/3Sn 3S 7·1.25H 2O/Polyacrylonitrile Composite. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13434-13442. [PMID: 33705090 DOI: 10.1021/acsami.1c01983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The need to effectively and selectively remove radioactive 137Cs and 90Sr from nuclear waste solutions persists to mitigate their environmental mobility and high radiotoxicity. Because it is difficult to effectively remove them from acidic environments that degrade most sorbents, new sorbent materials are highly desirable. Here, efficient removal of Cs+ and Sr2+ is achieved by the composite of layered tin sulfide (Me2NH2)4/3(Me3NH)2/3Sn3S7·1.25H2O (FJSM-SnS) and polyacrylonitrile (PAN) (FJSM-SnS/PAN). The granulous composite possesses regular particle morphology and good mechanical strength as an engineered form. It shows excellent acid-base and γ-irradiation resistance, high maximum adsorption capacities (qm) of 296.12 and 62.88 mg/g for Cs+ and Sr2+ ions, respectively, and high selectivity even in the presence of excess Na+ ions or using lake water. Impressively, qmCs of FJSM-SnS/PAN reaches 89.29 mg/g under even acidic conditions (pH = 2.5). The column loaded with FJSM-SnS/PAN granules exhibits high removal rates (R) toward low-concentration Cs+ and Sr2+ ions under both neutral and acidic conditions. Moreover, the composite can be recycled and reused with high RCs and RSr. This work highlights the great potential of metal sulfide ion-exchangers in engineered form for the efficient removal of Cs+ or Sr2+ ions, especially under acidic conditions, for radionuclide remediation.
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Affiliation(s)
- Jilong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Jiance Jin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Yanmin Zou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
| | - Haiyan Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Xi Zeng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Xiaoying Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Meiling Feng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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59
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Liu X, Wang J. Electro-adsorption characteristics and mechanism of Sr2+ ions by capacitive deionization and CFD analysis study. PROGRESS IN NUCLEAR ENERGY 2021. [DOI: 10.1016/j.pnucene.2020.103628] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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60
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Zhuang S, Zhang Q, Wang J. Adsorption of Co2+ and Sr2+ from aqueous solution by chitosan grafted with EDTA. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115197] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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61
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Rani M, Shanker U. Insight in to sunlight-driven rapid photocatalytic degradation of organic dyes by hexacyanoferrate-based nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5637-5650. [PMID: 32974828 DOI: 10.1007/s11356-020-10925-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/17/2020] [Indexed: 06/11/2023]
Abstract
Release of colouring agents into the environment alarms the need to design a cheap, quick and safe process. Owing to environmental safety concern, synthesis of two metal hexacyanoferrates (MHCFs) based on cadmium (CdHCF) and manganese (MnHCF) was carried out using natural plant extract of Azadirachta indica and water as a solvent. Synthesized MHCFs were utilized for the removal of an acid dye (fuchsin acid, FA) and a xanthenes dye (rhodamine B, RB). The reactions were optimized at various conditions of dye concentration, catalyst dose, reaction pH, time and source of light. The MHCFs showed excellent results with both the dyes within very limited span of time (2 h). Consequently, 98% of FA and 97% of RB were degraded with 10 mg of CdHCF, at neutral pH and under sunlight. The degradation process followed the first-order reaction kinetics having t1/2 around 0.3 min. The MHCFs exhibited difference of only little percentage in degradation owing to a very slight difference between their surface areas (CdHCF: 54.1 m2 g-1; MnHCF: 49.7 m2 g-1). The synthesised nanocatalysts were stable as indicated by their higher negative zeta potential values. The adsorption of dyes was found to be maximum with CdHCF having Xm value 19.69 mg g-1 and 18.15 mg g-1 for FA and RB, respectively. Photocatalytic degradation involved the main role of hydroxyl radical as indicated by decline in activity of nanocatalyst in the presence of scavengers. All in all, this study presents highly active nanomaterials with higher surface area, stability and semiconducting properties under natural conditions.
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Affiliation(s)
- Manviri Rani
- Department of Chemistry, Malaviya National Institute of Technology, Jaipur, Rajasthan, 302017, India.
| | - Uma Shanker
- Department of Chemistry, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, 144011, India.
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62
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Liu X, Wang J. Adsorptive removal of Sr 2+ and Cs + from aqueous solution by capacitive deionization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3182-3195. [PMID: 32902750 DOI: 10.1007/s11356-020-10691-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
The electro-assisted adsorptive removal of Sr2+ and Cs+ ions from aqueous solution by capacitive deionization (CDI) was studied using activated carbon cloth (ACC) as electrode. Various influencing factors, including initial concentration and the applied voltage, on the removal efficiency of Sr2+ and Cs+ were examined. The results showed that ACC electrode had a large amount of oxygen- and nitrogen-containing functional groups. The removal efficiency of Sr2+ and Cs+ was 40.58% and 62.05%, respectively, which decreased when their initial concentration increased from 3 to 20 mg L-1. The removal efficiency of Sr2+ and Cs+ increased by 26.64% and 17.84% with increase of the applied voltage. CDI process is favorable to remove high valence ions due to the ion-exchange and charge interaction mechanisms. The mixed-order (MO) model could fit the adsorption kinetics of Sr2+ and Cs+ (R2 = 0.938). The Redlich-Peterson isotherm could be used for Sr2+ and Cs+ adsorption. After adsorption, Sr and Cs partly deposited on the surface of the ACC, which did not change the surface structure of the ACC electrode.
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Affiliation(s)
- Xiaojing Liu
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
- Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
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63
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Liu X, Wang J. Electro-assisted adsorption of Cs(I) and Co(II) from aqueous solution by capacitive deionization with activated carbon cloth/graphene oxide composite electrode. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 749:141524. [PMID: 32836125 DOI: 10.1016/j.scitotenv.2020.141524] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/25/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
In this study, a new composite of activated carbon cloth/graphene oxide (ACC/GO) was prepared, characterized and used as electrode material for the electro-assisted adsorptive removal of Co2+ and Cs+ from aqueous solution. The ACC/GO composite was synthesized by a vacuum filtration method, and characterized by cyclic voltammetry and various surface characterization methods. Effect of applied voltage and initial concentration of Co2+ and Cs+ on their removal efficiency was examined. The kinetics and isotherms of Co2+ and Cs+ adsorption were investigated to explain the adsorption mechanism. At 0 V, the removal efficiency of Co2+ and Cs+ was 10.1% and 21.4%; at 1.2 V, electro-assistance increased the removal efficiency of Co2+ and Cs+ to 40.8% and 39.7%, respectively. Moreover, ACC/GO composite electrode had higher adsorption capacity compared to the pristine ACC electrode, due to its higher specific surface area and more oxygen-containing functional groups. The maximum adsorption capacity of Co2+ and Cs+ was 16.7 mg g-1 and 22.9 mg g-1, respectively at 1.2 V and 20 mg L-1 by ACC/GO composite electrode. The modeling and experimental results demonstrated that the removal mechanism involved in physical adsorption, chemical adsorption, and electro-adsorption. Overall, the prepared ACC/GO composite electrode had high capacitive deionization performance in removing heavy metal ions from wastewater.
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Affiliation(s)
- Xiaojing Liu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing 100084, PR China.
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64
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Guo X, Liu Y, Wang J. Equilibrium, kinetics and molecular dynamic modeling of Sr 2+ sorption onto microplastics. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123324. [PMID: 32947721 DOI: 10.1016/j.jhazmat.2020.123324] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/21/2020] [Accepted: 06/25/2020] [Indexed: 05/22/2023]
Abstract
Microplastics (MPs) are becoming ubiquitous pollutants in the global environments, which can potentially sorb metals ions in aquatic environments, causing adverse consequences. The interaction between Sr2+ and MPs, and the involved mechanisms have not been studied. Here we investigated the sorption behaviors of Sr2+ by polyamide (PA), polystyrene (PS), and polypropylene (PP). Three phenomenological mathematical models were developed and applied to describe the rate-limiting step in the sorption process. The molecular dynamic (MD) simulation was also conducted to investigate the sorption mechanism. The results showed that the optimum isotherm was presented by the nonlinear Temkin model. The maximum sorption capacities of Sr2+ by PA, PS and PP were 31.8, 51.4 and 52.4 μg g-1, respectively, with the initial Sr2+concentration of 3400 μg L-1. The phenomenological models adequately described the sorption kinetics data, concluding that the internal diffusion was the limiting step for Sr2+ sorption onto PS; while the external and internal diffusion were the slowest steps in the case of PA and PP. The MD study revealed that the main sorption mechanism was electrostatic interaction. The interaction energies of PA-SrCl2, PS-SrCl2, and PP-SrCl2 were -5.638, -6.418, and -13.05 kcal mol-1.
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Affiliation(s)
- Xuan Guo
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Yong Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing, 100084, PR China.
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65
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Biosorption of Sr2+ and Cs+ onto Undaria pinnatifida: Isothermal titration calorimetry and molecular dynamics simulation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114146] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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66
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Zhuang S, Wang J. Poly amidoxime functionalized carbon nanotube as an efficient adsorbent for removal of uranium from aqueous solution. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114288] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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67
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Rahayu NWST, Park J, Yang M, Wang S, Lee M. Cesium removal from a water system using a polysulfone carrier containing nitric acid-treated bamboo charcoal. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2020; 225:106374. [PMID: 33065426 DOI: 10.1016/j.jenvrad.2020.106374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/25/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Laboratory scale sorption and desorption experiments were performed to investigate the cesium (Cs) removal efficiency of a bead-shaped polysulfone carrier containing HNO3-treated bamboo charcoal (BC). The average Cs removal efficiency of BC only and of polysulfone carrier without BC after 1 h sorption reaction was 53 and 18%, respectively. However, the Cs removal efficiency for the polysulfone carrier with 5% HNO3-treated BC (P-5N-BC) after 1 h and 24 h reaction was 66 and 98%, respectively. The Cs removal efficiency after 24 h reaction remained >85% over a wide range of pH and temperature conditions, suggesting that using P-5N-BC as the Cs adsorbent is feasible in a variety of aquatic environments. The maximum Cs sorption capacity (qm) of P-5N-BC, as calculated from a Langmuir isotherm model, was 60.9 mg/g, which is much higher than those of other adsorbents from previous studies for 1 h of sorption time. The Cs desorption rate of P-5N-BC for 24 h desorption time was <17%, showing that the Cs was stably enough attached to the HNO3-treated BC for long-term use. The results of continuous column experiments showed that the total amount of treated water from the column packed with P-5N-BC increased more than nine times when compared with that from the only BC-granule-packed column. The P-5N-BC maintained more than 68% Cs removal efficiency after 90 pore volumes of flushing, suggesting that only 15 g of P-5N-BC (with only 0.75 g of HNO3-treated BC) could clean 5 L of Cs-contaminated water (initial Cs concentration: 1.0 mg/L; effluent concentration: < 0.09 mg/L). The present results demonstrate that P-5N-BC has remarkable potential for removal of Cs from diverse water systems.
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Affiliation(s)
- Ni Wayan Sukma Taraning Rahayu
- Department of Earth Environmental Sciences, Pukyong National University, 599-1 Daeyondong, Namgu, Busan, 608-737, Republic of Korea
| | - Jinyoung Park
- Department of Earth Environmental Sciences, Pukyong National University, 599-1 Daeyondong, Namgu, Busan, 608-737, Republic of Korea
| | - Minjune Yang
- Department of Earth Environmental Sciences, Pukyong National University, 599-1 Daeyondong, Namgu, Busan, 608-737, Republic of Korea
| | - Sookyun Wang
- Department of Energy and Resource Engineering, Pukyong National University, 599-1 Daeyondong, Namgu, Busan, 608-737, Republic of Korea
| | - Minhee Lee
- Department of Earth Environmental Sciences, Pukyong National University, 599-1 Daeyondong, Namgu, Busan, 608-737, Republic of Korea.
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68
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A review on emerging composite materials for cesium adsorption and environmental remediation on the latest decade. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117340] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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69
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Wang J, Guo X. Adsorption isotherm models: Classification, physical meaning, application and solving method. CHEMOSPHERE 2020; 258:127279. [PMID: 32947678 DOI: 10.1016/j.chemosphere.2020.127279] [Citation(s) in RCA: 449] [Impact Index Per Article: 112.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/28/2020] [Accepted: 05/30/2020] [Indexed: 05/28/2023]
Abstract
Adsorption is widely applied separation process, especially in environmental remediation, due to its low cost and high efficiency. Adsorption isotherm models can provide mechanism information of the adsorption process, which is important for the design of adsorption system. However, the classification, physical meaning, application and solving method of the isotherms have not been systematical analyzed and summarized. In this paper, the adsorption isotherms were classified into adsorption empirical isotherms, isotherms based on Polanyi's theory, chemical adsorption isotherms, physical adsorption isotherms, and the ion exchange model. The derivation and physical meaning of the isotherm models were discussed in detail. In addition, the application of the isotherm models were analyzed and summarized based on over 200 adsorption equilibrium data in literature. The statistical parameters for evaluating the fitness of the models were also discussed. Finally, a user interface (UI) was developed based on Excel software for solving the isotherm models, which was provided in supplemental material and can be easily used to model the adsorption equilibrium data. This paper will provide theoretical basis and guiding methodology for the selection and use of the adsorption isotherms.
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Affiliation(s)
- Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, PR China.
| | - Xuan Guo
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
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70
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Chen S, Hu J, Guo Y, Belzile N, Deng T. Enhanced kinetics and super selectivity toward Cs + in multicomponent aqueous solutions: A robust Prussian blue analogue/polyvinyl chloride composite membrane. ENVIRONMENTAL RESEARCH 2020; 189:109952. [PMID: 32980023 DOI: 10.1016/j.envres.2020.109952] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/12/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Developing effective adsorbents for 137Cs removal from complex wastewater systems has been a significant challenge. Although existing spheres adsorbents could improve the post-separation ability and practical operability, the adsorption kinetics are still significantly retarded due to the large intra-particle diffusion resistance. Here, we demonstrate the efficiency of a robust Prussian blue analogue/polyvinyl chloride composite membrane (PPM), which was easily prepared by a simple solvent evaporation method. In virtue of the less dense layer and ion-sieving functionality, it showed enhanced kinetics (5 h) and super selectivity (SF = 248.3-5388.6) towards Cs+. New PPM was robust within a wide pH range (2-10) and exhibited favorable removal capacity (152.8 mg/g), placing it at an outstanding material for Cs+ removal among other adsorbents. Moreover, PPM could be simply eluted and reused using a KCl solution as eluent. A study of the adsorption mechanism confirmed an ion-exchange action during the removal process. Thus, PPM is considered to be a promising candidate for the removal of Cs+ from multicomponent aqueous solutions.
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Affiliation(s)
- Shangqing Chen
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Jiayin Hu
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
| | - Yafei Guo
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Nelson Belzile
- Department of Chemistry & Biochemistry, Laurentian University, Sudbury, ON, P3E2C6, Canada
| | - Tianlong Deng
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
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71
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Yuan T, Chen Q, Shen X. Adsorption of cesium using mesoporous silica gel evenly doped by Prussian blue nanoparticles. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.03.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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72
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Tachibana Y, Kalak T, Nogami M, Tanaka M. Combined use of tannic acid-type organic composite adsorbents and ozone for simultaneous removal of various kinds of radionuclides in river water. WATER RESEARCH 2020; 182:116032. [PMID: 32574820 DOI: 10.1016/j.watres.2020.116032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 05/25/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
Tannic acid-type organic composite adsorbents (PA316TAS, AR-01TAS, PYRTAS, WA10TAS, WA20TAS, and WA30TAS), combined with hydrolyzed and sulfonated tannic acid (TAS) and porous-type strongly basic anion-exchange resin (PA316), benzimidazole-type anion-exchange resin embedded in high-porous silica beads (AR-01), pyridine-type anion-exchange resin (PYR), acrylic-type weakly basic anion-exchange resin (WA10), or styrene-type weakly basic anion-exchange resins (WA20 and WA30) for simultaneous removal of various kinds of radionuclides in river water were successfully synthesized. The adsorption behavior of twelve kinds of simulated radionuclides (Mn, Co, Sr, Y, Ru, Rh, Sb, Te, Cs, Ba, Eu, and I (I- and IO3-)) on these composite adsorbents has been studied in real river water at room temperature. PA316TAS adsorbents showed much higher distribution coefficients (Kd) for all metal ions. TAS structure has more selective adsorption ability for Mn, Co, Sr, Y, Cs, Ba, Eu, and IO3-. On the other hand, Y, Ru, Rh, Sb, Te, Eu, I (I- and IO3-) were adsorbed on both PA316 and TAS structures. To evaluate the validity of these mechanistic expectations, the respective chemical adsorption behaviors of Mn, Co, Sr, etc. and PA316TAS adsorbent were examined in river water ranging in temperature from 278 to 333 K. As was expected, one adsorption mechanism for Mn, Co, Sr, Cs, and Ba systems and two types of adsorption mechanisms for Y, Ru, Rh, Sb, Te, Eu, I (I- and IO3-) systems were observed. On the other hand, the precipitation of Mn, Co, Y, Ru, Rh, Te, and Eu was formed by ozonation for river water, that is, ozone can transform Mn, Co, Y, Ru, Rh, Te, and Eu ions into the insoluble precipitates. Hence, one straight line for Sr, Cs, Ba systems and two types of straight lines for Sb, I (I- and IO3-) systems were obtained in river water treated with ozone. The chromatography experiments of Cs, Sr, I (I- and IO3-) were carried out to calculate their maximum adsorption capacities. The obtained maximum adsorption capacities of Cs, Sr, and I- mixed with IO3- were 1.7 × 10-4 (Cs), 1.8 × 10-3 (Cs/O3), 7.8 × 10-5 (Sr), 5.6 × 10-4 (Sr/O3), 5.4 × 10-2 (I- and IO3-), 3.1 × 10-2 (I- and IO3-/O3) mol/g - PA316TAS. It was discovered that the maximum adsorption capacities of I- and IO3- for the composite adsorbent is unprecedented high and the capacity become much greater than an order of magnitude, compared with those of previous reports. This phenomenon suggests the formation of electron-donor-acceptor (EDA) complexes or pseudo EDA complex. Based on these results, it was concluded that the combined use of tannic acid-type organic composite adsorbents and ozone made it possible to remove simultaneously and effectively various kinds of radionuclides in river water in the wide pH and temperature ranges.
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Affiliation(s)
- Yu Tachibana
- Department of Nuclear System Safety Engineering, Graduate School of Engineering, Nagaoka University of Technology, 1603-1, Kamitomioka-machi, Nagaoka-shi, Niigata, 940-2188, Japan.
| | - Tomasz Kalak
- Department of Industrial Products and Packaging Quality, Institute of Quality Science, Poznań University of Economics and Business, Niepodległości 10, Poznań, 61-875, Poland
| | - Masanobu Nogami
- Department of Electric and Electronic Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka-shi, Osaka, 577-8502, Japan
| | - Masahiro Tanaka
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki-shi, Gifu, 509-5292, Japan
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73
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Optimization of the Solidification Method of High-Level Waste for Increasing the Thermal Stability of the Magnesium Potassium Phosphate Compound. ENERGIES 2020. [DOI: 10.3390/en13153789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The key task in the solidification of high-level waste (HLW) into a magnesium potassium phosphate (MPP) compound is the immobilization of mobile cesium isotopes, the activity of which provides the main contribution to the total HLW activity. In addition, the obtained compound containing heat-generating radionuclides can be significantly heated, which increases the necessity of its thermal stability. The current work is aimed at assessing the impact of various methodological approaches to HLW solidification on the thermal stability of the MPP compound, which is evaluated by the mechanical strength of the compound and its resistance to cesium leaching. High-salt surrogate HLW solution (S-HLW) used in the investigation was prepared for solidification by adding sorbents of various types binding at least 93% of 137Cs: ferrocyanide K-Ni (FKN), natural zeolite (NZ), synthetic zeolite Na-mordenite (MOR), and silicotungstic acid (STA). Prepared S-HLW was solidified into the MPP compound. Wollastonite (W) and NZ as fillers were added to the compound composition in the case of using FKN and STA, respectively. It was found that heat treatment up to 450 °C of the compound containing FKN and W (MPP-FKN-W) almost did not affect its compressive strength (about 12–19 МPa), and it led to a decrease of high compressive strength (40–50 MPa) of the compounds containing NZ, MOR, and STA (MPP-NZ, MPP-MOR, and MPP-STA-NZ, respectively) by an average of 2–3 times. It was shown that the differential leaching rate of 137Cs on the 28th day from MPP-FKN-W after heating to 250 °C was 5.3 × 10−6 g/(cm2∙day), however, at a higher temperature, it increased by 20 and more times. The differential leaching rate of 137Cs from MPP-NZ, MPP-MOR, and MPP-STA-NZ had values of (2.9–11) × 10−5 g/(cm2∙day), while the dependence on the heat treatment temperature of the compound was negligible.
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74
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Chen S, Hu J, Guo Y, Deng T. Facile Synthesis of Porous Polymer Using Biomass Polyphenol Source for Highly Efficient Separation of Cs + from Aqueous Solution. Sci Rep 2020; 10:8221. [PMID: 32427956 PMCID: PMC7237466 DOI: 10.1038/s41598-020-65099-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/23/2020] [Indexed: 11/09/2022] Open
Abstract
In this work, a series of polyphenol porous polymers were derived from biomass polyphenols via a facile azo-coupling method. The structure and morphologies of the polymer were characterized by BET, TEM, SEM, XRD, TGA and FT-IR techniques. Batch experiments demonstrated their potentialities for adsorptive separation of Cs+ from aqueous solution. Among them, porous polymers prepared with gallic acid as starting material (GAPP) could adsorb Cs+ at wide pH value range effectively, and the optimal adsorption capacity was up to 163.6 mg/g, placing it at top material for Cs+ adsorption. GAPP exhibited significantly high adsorption performance toward Cs+ compared to Na+ and K+, making it possible in selective removal of Cs+ from ground water in presence of co-existing competitive ions. Moreover, the Cs-laden GAPP could be facilely eluted and reused in consecutive adsorption-desorption processes. As a result, we hope this work could provide ideas about the potential utilization of biomass polyphenol in environmental remediation.
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Affiliation(s)
- Shangqing Chen
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, P.R. China
| | - Jiayin Hu
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, P.R. China.
| | - Yafei Guo
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, P.R. China
| | - Tianlong Deng
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, P.R. China.
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75
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Wang J, Guo X. Adsorption kinetic models: Physical meanings, applications, and solving methods. JOURNAL OF HAZARDOUS MATERIALS 2020; 390:122156. [PMID: 32006847 DOI: 10.1016/j.jhazmat.2020.122156] [Citation(s) in RCA: 592] [Impact Index Per Article: 148.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/20/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Adsorption technology has been widely applied in water and wastewater treatment, due to its low cost and high efficiency. The adsorption kinetic models have been used to evaluate the performance of the adsorbent and to investigate the adsorption mass transfer mechanisms. However, the physical meanings and the solving methods of the kinetic models have not been well established. The proper interpretation of the physical meanings and the standard solving methods for the adsorption kinetic models are very important for the applications of the kinetic models. This paper mainly focused on the physical meanings, applications, as well as the solving methods of 16 adsorption kinetic models. Firstly, the mathematical derivations, physical meanings and applications of the adsorption reaction models, the empirical models, the diffusion models, and the models for adsorption onto active sites were analyzed and discussed in detail. Secondly, the model validity evaluation equations were summarized based on literature. Thirdly, a convenient user interface (UI) for solving the kinetic models was developed based on Excel software and provided in supplementary information, which is helpful for readers to simulate the adsorption kinetic process.
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Affiliation(s)
- Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing 100084, PR China.
| | - Xuan Guo
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
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76
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Removing Sr(II) and Cs(I) from the Aqueous Phase Using Basil Seed and Elucidating the Adsorption Mechanism. SUSTAINABILITY 2020. [DOI: 10.3390/su12072895] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To confirm the capability and mechanisms of Sr(II) and Cs(I) adsorption from the aqueous phase using basil seed (BS), virgin BS, calcined BS (BS500 and BS1000), and enzymatically treated BS, namely Mannanase BGM (M-BS), Pectinase G (P-BS), Hemicellulase (H-BS), and Cellulase A (C-BS) was evaluated. The adsorption capabilities of Sr(II) and Cs(I) of various BS adsorbents were also evaluated. The quantity of Sr(II) and Cs(I) adsorbed onto BS was greater than that of BS500 or BS1000, suggesting that the physicochemical characteristics of the BS surface affected Sr(II) and Cs(I) removal from the aqueous phase. Furthermore, the quantity of Sr(II) and Cs(I) adsorbed onto virgin BS was greater than that of enzymatically treated BS, indicating that glucomannan or (1,4)-xylan in the cellulosic hydrocolloid of the BS strongly affected the adsorption capability of Cs(I) or Sr(II) (except for M-BS in Sr(II) adsorption). Our obtained results indicate that, as an adsorbent, BS was capable of removing Sr(II) and Cs(I) from the aqueous solution.
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77
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Ali S, Shah IA, Huang H. Selectivity of Ar/O2 plasma-treated carbon nanotube membranes for Sr(II) and Cs(I) in water and wastewater: Fit-for-purpose water treatment. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116352] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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78
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Liu X, Wu J, Hou LA, Wang J. Fouling and cleaning protocols for forward osmosis membrane used for radioactive wastewater treatment. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2019.08.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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79
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Chen C, Hu J, Wang J. Biosorption of uranium by immobilized Saccharomyces cerevisiae. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2020; 213:106158. [PMID: 31983440 DOI: 10.1016/j.jenvrad.2020.106158] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/31/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
A novel biosorbent was prepared and applied for the removal of uranium from aqueous solution. A new immobilization method was studied and used to embed living yeast cells of Saccharomyces cerevisiae (2% w/v) by sodium sulfate (0.5 mol/L) based on saturated boric acid-alginate calcium cross-linking method. The swelling ratio, hydraulic and chemical stability and bioactivity of immobilized microbial cells were examined. Their ultra-microstructure and property were observed by SEM, TEM and FTIR techniques. The influencing factors, such as contact time, initial uranium concentration, and initial pH were investigated. The adsorption capacity of biosorbent increased from 0.75 to 113.4 μmol/g when the equilibrium concentration of U was 0.9, and 43.9 μmol/L, respectively. U adsorption followed pseudo first-order kinetic model. SEM-EDS and TEM-EDS observation indicated that uranium was adsorbed both on the surface and the inner parts of the biosorbent. FTIR and the XPS results confirmed the role of oxygen in capturing uranium from aqueous solution. XPS analysis showed that the mixture of U (VI) and U (IV) existed on the surface of biosorbent, which evidenced that uranium was microbiologically reduced.
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Affiliation(s)
- Can Chen
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jun Hu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, PR China.
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80
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Eun S, Hong HJ, Kim H, Jeong HS, Kim S, Jung J, Ryu J. Prussian blue-embedded carboxymethyl cellulose nanofibril membranes for removing radioactive cesium from aqueous solution. Carbohydr Polym 2020; 235:115984. [PMID: 32122514 DOI: 10.1016/j.carbpol.2020.115984] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/16/2020] [Accepted: 02/10/2020] [Indexed: 02/08/2023]
Abstract
In this study, we synthesized a Prussian blue (PB)-embedded macroporous carboxymethyl cellulose nanofibril (CMCNF) membrane for facile cesium (Cs) removal. The PB was formed in situ at Fe3+ sites on a CMCNF framework cross-linked using FeCl3 as a cross-linking agent. Cubic PB particles of size 5-20 nm were observed on the macroporous CMCNF membrane surface. The PB-CMCNF membrane showed 2.5-fold greater Cs adsorption capacity (130 mg/gPB-CMCNF) than commercial PB nanoparticles, even though the PB loading of the PB-CMCNF membrane was less than 100 mg/gPB-CMCNF. The macroporous structure of the CMCNF membrane led to improved diffusion in the solution, thereby increasing the Cs adsorption capacity. The Cs adsorption behavior was systematically investigated in different solution chemistry. Finally, 137Cs removal using a semicontinuous adsorption module was demonstrated in real seawater. The results showed that the PB-CMCNF membrane is a highly effective, practical material for the removal of 137Cs from aqueous environments.
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Affiliation(s)
- Semin Eun
- School of Civil Engineering, ChungBuk National University (CBNU), Cheongju, Chungbuk, 28644, Republic of Korea.
| | - Hye-Jin Hong
- Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea.
| | - Hyuncheol Kim
- Nuclear Emergency and Environmental Protection Division, Korea Atomic Energy Research Institute (KAERI), Daejeon, 34057, Republic of Korea.
| | - Hyeon Su Jeong
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju, Jeonbuk, 55324, Republic of Korea.
| | - Soonhyun Kim
- Division of Energy Technology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea.
| | - Jongwon Jung
- School of Civil Engineering, ChungBuk National University (CBNU), Cheongju, Chungbuk, 28644, Republic of Korea.
| | - Jungho Ryu
- Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea.
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81
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Zhuang S, Liu Y, Wang J. Covalent organic frameworks as efficient adsorbent for sulfamerazine removal from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121126. [PMID: 31505428 DOI: 10.1016/j.jhazmat.2019.121126] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/20/2019] [Accepted: 08/29/2019] [Indexed: 05/23/2023]
Abstract
Here, TPB (triphenylbenzene) - DMTP (dimethoxyterephthaldehyde) -COF was prepared, characterized and used as effective adsorbent for the removal of sulfamerazine (SMT) from aqueous solution. Its adsorption characteristics and mechanism were explored. With large channel (∼3.3 nm), high specific surface area (2115 m2/g), and high crystallite, TPB-DMTP-COF showed high adsorption capacity (209 mg/g), fast adsorption equilibrium (80 min), and good reusability. Natural pH condition was optimal for its adsorption capacity, while electrostatic repulsion between TPB-DMTP-COF and SMT accounted for the low adsorption performance at acidic or alkaline conditions. According to the DFT method, SMT molecules adsorbed in the pore-sites of COFs via C-H···π interaction was the predominant and stable adsorption configuration accounting for the efficient removal of SMT in large quantity. This study revealed the great adsorption potential of COFs skeleton itself in the application of environmental remediation.
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Affiliation(s)
- Shuting Zhuang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, China
| | - Yong Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, China.
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82
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Cesium separation from radioactive waste by extraction and adsorption based on crown ethers and calixarenes. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2019.08.001] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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83
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Xing M, Zhuang S, Wang J. Efficient removal of Cs(I) from aqueous solution using graphene oxide. PROGRESS IN NUCLEAR ENERGY 2020. [DOI: 10.1016/j.pnucene.2019.103167] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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84
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Performance and deterioration of forward osmosis membrane exposed to various dose of gamma-ray irradiation. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2019.106950] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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85
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Liu X, Wu J, Wang J. Electro-enhanced removal of cobalt ions from aqueous solution by capacitive deionization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134144. [PMID: 32380616 DOI: 10.1016/j.scitotenv.2019.134144] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/18/2019] [Accepted: 08/26/2019] [Indexed: 06/11/2023]
Abstract
Electro-enhanced removal of cobalt (Co) ions from aqueous solution by capacitive deionization (CDI) was investigated in this study. The effect of applied voltage and initial Co ions concentration, as well as coexisted ions on removal efficiency of Co ions was determined. Co ions adsorption performance was also evaluated by kinetic models, isotherm models and three mass transfer models. The results indicated that the removal efficiency of Co ions had positive correlation with applied voltage (R2 = 0.9991), which increased from 15.11% to 36.54% when the applied voltage increased from 0 V to 1.2 V. However, the removal efficiency of Co ions decreased gradually from 36.54% to 9.51% with the increasing initial Co ions concentration from 5 to 30 mg L-1. The coexisted ions (Sr and Cs) also largely inhibited the removal efficiency of Co ions and make it reduce to 8.37%. After fitting the adsorption data, pseudo-second order (PSO) model was better than pseudo-first order (PFO) for each applied voltage and initial concentration. A monolayer adsorption is the main adsorption mechanism of Co ions adsorption on the activated carbon cloth (ACC) because of the higher regression coefficient (0.964) by Langmuir isotherm. Based on kinetics together with the equilibrium isotherm, three mass transfer models were established and adsorption of the ions onto the active sites (AAS) model is the rate-limiting step due to the best fitting for the kinetic adsorption data of Co ions on ACC electrode. In addition, the Co ions were uniformly distributed on ACC electrode after adsorption.
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Affiliation(s)
- Xiaojing Liu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Jinling Wu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing 100084, PR China.
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86
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87
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Zhuang S, Wang J. Removal of cesium ions using nickel hexacyanoferrates-loaded bacterial cellulose membrane as an effective adsorbent. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111682] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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88
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Laboratory-scale studies on the removal of cesium with a submerged membrane adsorption reactor. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06763-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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89
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Xing M, Zhuang S, Wang J. Adsorptive removal of strontium ions from aqueous solution by graphene oxide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:29669-29678. [PMID: 31401804 DOI: 10.1007/s11356-019-06149-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Graphene oxide (GO) was prepared, characterized, and applied for adsorption of Sr(II) in aqueous solution. The adsorption capacity was calculated to be 137.80 mg/g according to the Langmuir model. The observation by scanning electron microscope with energy dispersive X-ray detector (SEM-EDX), high-resolution transmission electron microscope (HRTEM), and X-ray diffraction (XRD) revealed the crystal structure of Sr compound on the surface of graphene sheets. The analyses by the Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) indicated the involvement of O-C=O, C-O, and C-O-C groups during the adsorption. The X-ray absorption fine structure (XAFS) analysis provided the detail information of GO-Sr composites, and the fitting results were given by Sr(HCOO)2 and SrCO3 model, and the coordination numbers (CN) and interatomic distances (R) of Sr-O shell and Sr-C shell were calculated. The adsorption mechanism of Sr(II) was attributed to complexation between Sr and the acidic oxygen-containing groups, which lead to the agglomeration of graphene oxide. Two types of crystals were proposed. Type 1 was formed by coordination between Sr(II) and O-C=O groups, and type 2 was formed by coordination between Sr(II) and C-O/C-O-C groups.
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MESH Headings
- Adsorption
- Cations, Divalent/chemistry
- Cations, Divalent/isolation & purification
- Graphite/chemistry
- Microscopy, Electron, Scanning
- Microscopy, Electron, Transmission
- Photoelectron Spectroscopy
- Spectrometry, X-Ray Emission
- Spectroscopy, Fourier Transform Infrared
- Strontium/chemistry
- Strontium/isolation & purification
- Water Pollutants, Chemical/chemistry
- Water Pollutants, Chemical/isolation & purification
- X-Ray Diffraction
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Affiliation(s)
- Min Xing
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
- Beijing Municipal Research Institute of Environmental Protection, Beijing, 100084, People's Republic of China
| | - Shuting Zhuang
- Beijing Municipal Research Institute of Environmental Protection, Beijing, 100084, People's Republic of China
| | - Jianlong Wang
- Beijing Municipal Research Institute of Environmental Protection, Beijing, 100084, People's Republic of China.
- Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Energy Science Building, Beijing, 100084, People's Republic of China.
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90
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Liu X, Wu J, Hou LA, Wang J. Removal of Co, Sr and Cs ions from simulated radioactive wastewater by forward osmosis. CHEMOSPHERE 2019; 232:87-95. [PMID: 31152907 DOI: 10.1016/j.chemosphere.2019.05.210] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 05/21/2023]
Abstract
The removal of Co, Sr and Cs ions form simulated radioactive wastewater using forward osmosis (FO) process was investigated. The effect of various factors on nuclide transport was examined, including membrane orientation, NaCl concentration, flow velocity, and the main factors were identified by correlation analysis. The mechanisms of nuclides transfer through membrane were explored. The results indicated that the active layer facing draw solution (AL-DS) had higher nuclide flux than AL-FS. At AL-FS mode, the highest flux of Co, Sr and Cs were only 1.54, 10.22 and 15.63 mg m-2 h-1 respectively by cellulose triacetate with embedded polyester screen support (CTA-ES) membrane. At AL-DS mode, the flux of Co and Cs increased when NaCl concentration and flow velocity increased. Convection, diffusion and electrostatic interactions were found to influence the nuclide transport all together. The Pearson correlation and partial correlation analysis identified that the diffusion coefficient of nuclides and reverse NaCl flux were the most important factors affecting nuclide flux through cellulose triacetate membrane. The water flux, NaCl concentration, flow velocity and partition coefficient were not the main affecting factors for nuclide flux.
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Affiliation(s)
- Xiaojing Liu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing 100084, PR China
| | - Jinling Wu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Li-An Hou
- Xi'an High Tech Inst, Xi'an, 710025, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing 100084, PR China.
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91
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Chen C, Hu J, Wang J. Uranium biosorption by immobilized active yeast cells entrapped in calcium-alginate-PVA- GO-crosslinked gel beads. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2019-3150] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Abstract
A novel biosorbent, i. e. Saccharomyces cerevisiae entrapped in graphene oxide (GO), polyvinyl alcohol (PVA) and alginate and cross-linked in CaCl2- boric acid solution, was prepared, characterized and applied for U (VI) biosorption. The performance of U sorption and cations release (Na, K, Ca and Mg ions) was investigated under different contact time, initial uranium concentration and initial pH. Uranium sorption equilibrium basically achieved after 360 min. The kinetic data of U biosorption and Ca release were best described by the pseudo first-order equation. Both Langmuir and Freundlich models could fit the U sorption isotherm data. With increase of initial uranium (3.7 ~ 472.2 μmol/L) and sodium concentration (78.8 ~ 3911.7 μmol/L), the cations release ((Na + K)/2 + (Ca + Mg)) decreased from 116.9 to 30.1 μmol/g when the corresponding U sorption increased from 0.6 to 77.3 μmol/g. Initial solution pH at 3 was favorable for U sorption when pH ranged from 3 to 7. With increase of uranium concentration, ion exchange played a less role in U removal. The maximum U sorption capacity reached 142.1 μmol/g, calculated from the Langmuir model at initial pH 5. The O-containing functional group, such as carboxyl on the gel bead played an important role in U adsorption according to FTIR and XPS analysis. XPS analysis showed the existence of U (VI) and U (IV) on the surface of gel bead. Ion exchange, complexation and uranium reduction involved in uranium adsorption by the immobilized active dry yeast gel beads.
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Affiliation(s)
- Can Chen
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing 100084 , P.R. China
| | - Jun Hu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing 100084 , P.R. China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing 100084 , P.R. China
- Beijing Key Laboratory of Radioactive Waste Treatment, Energy Science Building , Tsinghua University , Beijing 100084 , P.R. China
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92
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93
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Tian K, Zhuang S, Wu J, Wang J. Metal organic framework (La-PDA) as an effective adsorbent for the removal of uranium(VI) from aqueous solution. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2019-3145] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract
A two-dimensional lanthanum(III) porous coordination polymer was prepared, characterized and applied as an efficient adsorbent for the removal of uranium from aqueous solution. Lanthanum(III) was the metal center of MOFs, and the deprotonated anions of pyridine-2,6-dicarboxylic acid (H2PDA), PDA2− was the organic ligand, this MOF was name as La-PDA, which was synthesized by hydrothermal reaction method. Scanning electron microscope (SEM), Fourier transform infrared (FTIR), powder X-ray diffraction (PXRD) and thermal gravimetric (TG) analysis were used for characterization, and the results indicated that the La-PDA composites were successfully prepared. Compared with traditional adsorbents of uranium, La-PDA showed excellent adsorption properties. The adsorption capacity was 247.6 mg g−1 at 298 K and pH 4.0. The adsorption equilibrium achieved within 120 min, and the adsorption process was exothermic and spontaneous. The absorption mechanism of La-PDA was also explored, from the XPS spectra, the pyridine-like nitrogen atoms (C=N–C) and carboxyl oxygen atoms (–COO–) contributed to the adsorption of uranium. The results suggested that PDA2− was a potential ligand of uranium adsorption, La-PDA composites were effective adsorbents for the removal of uranium from aqueous solution.
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Affiliation(s)
- Kun Tian
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University , Beijing 100084 , P.R. China
| | - Shuting Zhuang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University , Beijing 100084 , P.R. China
| | - Jinling Wu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University , Beijing 100084 , P.R. China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University , Energy Science Building , Beijing 100084 , P.R. China
- Beijing Key Laboratory of Radioactive Waste Treatment , Tsinghua University , Beijing 100084 , P.R. China
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94
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Removal of nuclides and boric acid from simulated radioactive wastewater by forward osmosis. PROGRESS IN NUCLEAR ENERGY 2019. [DOI: 10.1016/j.pnucene.2019.03.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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95
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Alginate-enfolded copper hexacyanoferrate graphene oxide granules for adsorption of low-concentration cesium ions from aquatic environment. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06511-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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96
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Hu Y, Guo X, Chen C, Wang J. Algal sorbent derived from Sargassum horneri for adsorption of cesium and strontium ions: equilibrium, kinetics, and mass transfer. Appl Microbiol Biotechnol 2019; 103:2833-2843. [PMID: 30693405 DOI: 10.1007/s00253-019-09619-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/29/2018] [Accepted: 01/03/2019] [Indexed: 12/13/2022]
Abstract
An algal sorbent derived from Sargassum horneri was prepared and used to adsorb cesium and strontium ions from aqueous solution. The phenomenological mathematical models associated to the predicted equilibrium isotherms were developed to determine the rate-limiting steps of the adsorption process. The maximum adsorption capacity of cesium ion and strontium ion was calculated to be 0.358 and 1.72 mmol g-1, respectively. The adsorption kinetics followed to the pseudo-second-order equation. It was found that adsorption of cesium or strontium ions onto the active sites of the biosorbent was the rate-limiting step. In addition, the external mass transfer and the internal mass transfer cannot be neglected for the adsorption of strontium ion based on the error analysis. The functional groups relevant to the adsorption were carboxyl and sulfate groups.
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Affiliation(s)
- Yuming Hu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Xuan Guo
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Can Chen
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
- Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing, 100084, People's Republic of China.
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97
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Zhuang S, Wang J. Removal of U(VI) from aqueous solution using phosphate functionalized bacterial cellulose as efficient adsorbent. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-3077] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Abstract
In this study, phosphate functionalized bacterial cellulose with micro-fibrous structure was prepared, characterized and applied for U(VI) adsorption. The successful grafting of phosphoric functional groups was proved by the FTIR spectra and EDS analysis (P~4.15 wt%), and the porous structure was confirmed by SEM and BET analyses. Furthermore, the effect of initial pH, contact time, initial concentration, and temperature were studied. The as-prepared adsorbent showed a high adsorption capacity at wide pH range (4.0–8.0) and its maximum adsorption capacity was calculated to be 50.65 mg/g. This endothermic adsorption process conformed to the pseudo second-order kinetic model and the Elovich kinetic models and the Langmuir isothermal models. According to the FTIR and XPS analysis, an adsorption mechanism was tentatively proposed, mainly due to the interaction between U(VI) and phosphoric groups.
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Affiliation(s)
- Shuting Zhuang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University , Beijing , China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University , Beijing , China
- Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University , Beijing , China
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98
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Hu J, Chen S, Zhang N, Wang Z, Shi J, Guo Y, Deng T. Porous composite CMC–KCuFC–PEG spheres for efficient cesium removal from wastewater. NEW J CHEM 2019. [DOI: 10.1039/c9nj01697j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly stable porous composite CMC–KCuFC–PEG was used for Cs+ recovery from wastewater, and showed excellent adsorption performance.
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Affiliation(s)
- Jiayin Hu
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Shangqing Chen
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Ningluo Zhang
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Zheng Wang
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Jian Shi
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Yafei Guo
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Tianlong Deng
- Tianjin Key Laboratory of Marine Resources and Chemistry
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
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99
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Zhuang S, Zhu X, Wang J. Kinetic, equilibrium, and thermodynamic performance of sulfonamides adsorption onto graphene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:36615-36623. [PMID: 30377960 DOI: 10.1007/s11356-018-3368-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 09/27/2018] [Indexed: 06/08/2023]
Abstract
With the extensive production and consumption of sulfonamide antibiotics, their existence in aquatic environments has received increasing attention due to their acute and chronic toxic effects. In this study, graphene was characterized and applied for sulfamethazine (SMT) removal from aqueous solution. The effect of the contact time (0-1440 min), initial concentration (2-100 mg L-1), and temperature (298-318 K), as well as pH (2-9) and ionic strength (0-0.2 M NaNO3), have been examined. The maximum adsorption capacity was calculated to be 104.9 mg g-1 using the Langmuir model. The endothermic adsorption process (△H = 10.940 kJ mol-1) was pH- and temperature-dependent, and the adsorption data fitted well with the Langmuir isothermal and the pseudo second-order kinetic models. Additionally, ionic strength (0.01 to 0.2 M NaNO3) had no obvious influence on SMT adsorption by graphene. Ultimately, graphene proved to be an effective adsorbent for sulfonamide antibiotics removal from aqueous solutions.
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Affiliation(s)
- Shuting Zhuang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Xin Zhu
- China Three Gorges Projects Development Co., Ltd, Chengdu, 610041, People's Republic of China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
- Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing, 100084, People's Republic of China.
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