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Boron separation by adsorption and flotation with Mg-Al-LDHs and SDBS from aqueous solution. Chin J Chem Eng 2023. [DOI: 10.1016/j.cjche.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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2
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Shimizu T, Abe M, Noguchi M, Yamasaki A. Removal of Borate Ions from Wastewater Using an Adsorbent Prepared from Waste Concrete (PAdeCS). ACS OMEGA 2022; 7:35545-35551. [PMID: 36249354 PMCID: PMC9557884 DOI: 10.1021/acsomega.2c02625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
The removal of boron from model wastewater using PAdeCS, a material derived from waste concrete, was studied. Three different types of boron removal methods were examined: adsorption with untreated PAdeCS, adsorption with heat-treated ettringite-enriched PAdeCS, and coagulation-sedimentation method by mixing untreated PAdeCS as a calcium source and aluminum sulfate as an aluminum and sulfate ion source for the formation of ettringite. The highest boron removal performance was observed for the coagulation-sedimentation method, where the boron concentration in the model wastewater decreased rapidly from 100 mg/L to the level below the Japanese effluent standard at 10 mg/L when the weight ratio of PAdeCS addition into water is 4.0% with aluminum sulfate, of which the added amount corresponds to the stoichiometric condition for the formation of ettringite (Ca:Al:SO4 2- = 6:2:3). The heat-treated ettringite-enriched PAdeCS also showed higher boron removal performances compared with untreated PAdeCS. The dependency of the boron removal capacity on the aqueous boron concentration can be expressed by the Langmuir equation for all the cases. The maximum capacity (q m) values were 1.83, 3.39, and 3.02 mg/g-solid for adsorption with untreated PAdeCS, adsorption with heat-treated ettringite-enriched PAdeCS, and coagulation-sedimentation, respectively. These capacities were higher or comparable with the ones reported in the literature.
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3
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Zhang Q, Ji F, Jiang L, Shen Q, Mao Y, Liu C. Glycine- and Alanine-Intercalated Layered Double Hydroxides as Highly Efficient Adsorbents for Phosphate with Kinetic Advantages. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:586. [PMID: 35214914 PMCID: PMC8878144 DOI: 10.3390/nano12040586] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 02/06/2023]
Abstract
Phosphate is the main cause of eutrophication. Layered double hydroxides (LDH) are considered to be promising phosphate adsorbents due to their high affinity and large capacity. In this study, we partially intercalated zwitterionic glycine and alanine into Cl-LDH (corresponding to MgAl-LDH with interlayer anion Cl-) and synthesized efficient inorganic-organic nanohybrids for phosphate removal with kinetic advantages. Gly-Cl-LDH, Ala-Cl-LDH and Cl-LDH were characterized, and their phosphate adsorption performances under the influence of environment factors (e.g., solution pH, coexisting anions, contact time and phosphate concentration) were investigated. The results show that Gly-Cl-LDH and Ala-Cl-LDH had larger specific surface areas and larger interlayer spaces than Cl-LDH, and exhibited better adsorption performance at a lower pH and better adsorption selectivity against SO42-. Kinetic experiments indicated that Gly-Cl-LDH and Ala-Cl-LDH can reduce phosphate concentrations to a lower level in a shorter time. The pseudo-second-order kinetic constants of Gly-Cl-LDH and Ala-Cl-LDH were 1.27 times and 3.17 times of Cl-LDH, respectively (R2 > 0.996). The maximum adsorption capacities derived from a Langmuir model of Cl-LDH, Gly-Cl-LDH and Ala-Cl-LDH are 63.2 mg-P/L, 55.8 mg-P/L and 58.2 mg-P/L, respectively, which showed superiority over the prevailing phosphate adsorbents. This research provides highly efficient adsorbents for removing phosphate from aqueous solutions.
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Affiliation(s)
| | - Fangying Ji
- College of Environment and Ecology, Chongqing University, Chongqing 400045, China; (Q.Z.); (L.J.); (Q.S.); (Y.M.); (C.L.)
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Yamaguchi S, Hongo T. Synthesis of metaettringite from blast furnace slag and evaluation of its boron adsorption ability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:15070-15075. [PMID: 33230798 DOI: 10.1007/s11356-020-11028-z] [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: 05/21/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Blast furnace slag (BFS) is generated as a by-product in the ironmaking process, and hence, the development of a recycling system for BFS waste is important. In this study, the calcium component of BFS obtained from a steel company in Japan was successfully used as raw material of the synthesis of metaettringite. Metaettringite has been recently considered for as an adsorbent for boron, which is toxic to humans and animals. The BFS used was amorphous, and mainly consisted of CaO, SiO2, Al2O3, and MgO; in particular, it contained 42.82 mass % CaO. The X-ray diffraction pattern and Fourier transform infrared spectrum of the synthesized sample indicated the formation of metaettringite. Field-emission scanning electron microscopy observations revealed its needle-like morphology. The synthesized metaettringite adsorbed 1.189 mg-B/g-adsorbent in 240 min, which was approximately 25 times greater than that achieved using the parent BFS. The metaettringite can reduce the boron concentration to below the uniform effluent standard in industrial wastewater in Japan (16 mg/L).
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Affiliation(s)
- Shie Yamaguchi
- Department of Life & Green Chemistry, Faculty of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama, 369-0293, Japan
| | - Teruhisa Hongo
- Department of Life & Green Chemistry, Faculty of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama, 369-0293, Japan.
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Hadis Hatami, Fotovat A, Halajnia A. Adsorption of Boron from a Simulated Soil Solution Using Zn–Al and Mn-Doped Zn–Al Layered Double Hydroxides. COLLOID JOURNAL 2020. [DOI: 10.1134/s1061933x20060058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Chen J, Wang J, Gao Q, Zhang X, Liu Y, Wang P, Jiao Y, Zhang Z, Yang Y. Enhanced removal of I - on hierarchically structured layered double hydroxides by in suit growth of Cu/Cu 2O. J Environ Sci (China) 2020; 88:338-348. [PMID: 31862075 DOI: 10.1016/j.jes.2019.09.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
To further improve the removal ability of layered double hydroxide (LDH) for iodide (I-) anions from wastewater, we prepared hierarchically porous Cu5Mg10Al5-LDH and used as a matrix for in suit growth of Cu/Cu2O on its surface, forming Cu/Cu2O-LDH, which was characterized and applied as an adsorbent. Results displayed high I- saturation uptake capability (137.8 mg/g) of Cu/Cu2O-LDH compared with Cu5Mg10Al5-LDH (26.4 mg/g) even thermal activated LDH (76.1 mg/g). Thermodynamic analysis showed that the reaction between I- anions and Cu/Cu2O-LDH is a spontaneous and exothermic. Uptake kinetics analysis exhibited that adsorption equilibrium can be reached after 265 min. Additionally, the adsorbent showed satisfactory selectivity in the presence of competitive anions (e.g., SO42-), and could achieve good adsorption performance in a wide pH range of 3-8. A cooperative adsorption mechanism was proposed on the basis of the following two aspects: (1) ion exchange between iodide and interlayer anions; (2) the adsorption performance of Cu, Cu(II) and Cu2O for I-. Meanwhile, the difference between the adsorption mechanism of Cu/Cu2O-LDH, Cu5Mg10Al5-LDH and Cu5Mg10Al5-CLDH adsorbents was also elaborated and verified.
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Affiliation(s)
- Jiuyu Chen
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Junyi Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qianhong Gao
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaomei Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ying Liu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Peng Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Yan Jiao
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Zongxiang Zhang
- Jiangsu Environmental Protection Key Laboratory of Monitoring for Organic Pollutants in Soil, Taizhou Environmental Monitoring Center, Taizhou 225300, China
| | - Yi Yang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science & Technology, Nanjing 210044, China.
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7
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Ulatowska J, Polowczyk I, Bastrzyk A, Koźlecki T, Sawiński W. Fly ash as a sorbent for boron removal from aqueous solutions: Equilibrium and thermodynamic studies. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1612434] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Justyna Ulatowska
- Faculty of Chemistry, Division of Chemical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Izabela Polowczyk
- Faculty of Chemistry, Division of Chemical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Anna Bastrzyk
- Faculty of Chemistry, Division of Chemical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Tomasz Koźlecki
- Faculty of Chemistry, Division of Chemical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Wojciech Sawiński
- Faculty of Chemistry, Division of Chemical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
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Ogata F, Nagai N, Toda M, Otani M, Nakamura T, Kawasaki N. Evaluation of the Interaction between Borate Ions and Nickel-Aluminum Complex Hydroxide for Purification of Wastewater. Chem Pharm Bull (Tokyo) 2019; 67:487-492. [PMID: 31061375 DOI: 10.1248/cpb.c19-00037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new mixed metal hydroxide adsorbent (NA11, molar ratioNi-Al = 1 : 1) was prepared and its physicochemical properties (specific surface area, amount of hydroxyl group, scanning electron microscopy images, X-ray diffraction analysis, elemental distribution, and binding energy) were studied. In addition, the amount of borate ion adsorbed using several adsorbents, including NA11, was evaluated in this study. The specific surface area of and amount of hydroxyl group in NA11 was greater than those of the other studied adsorbents. The amount of borate ion adsorbed showed similar trends to those of the specific surface area and number of hyrdroxyl groups, which indicated that the adsorption mechanism of borate ion was related to the specific surface area and the amount of hydroxyl group. After adsorption, the binding energy of boron B(1s) peaked, and the sulfur peak intensity S(2s) and S(2p) reduced. These results suggest that ion exchange between borate and sulfate ions was one of the adsorption mechanisms. Equilibrium adsorption was reached within 6 h in the case of NA11. These data were fitted into a pseudo-second-order model (r = 0.813-0.998). The solution pH affected the capacity of NA11 for adsorbing borate ion from aqueous solution. It was found that adsorbance was greatest at pH 10. Adsorption isotherm data were fitted to both the Freundlich (r = 0.986-0.994) and Langmuir (r = 0.997-0.999) isotherm equations. Collectively, it is suggested that NA11 is prospectively useful for the adsorption of borate ion from aqueous solutions.
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Affiliation(s)
| | | | | | | | | | - Naohito Kawasaki
- Faculty of Pharmacy, Kindai University.,Antiaging Center, Kindai University
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9
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Meng F, Ma W, Wu L, Hao H, Xin L, Chen Z, Wang M. Selective and efficient adsorption of boron (III) from water by 3D porous CQDs/LDHs with oxygen-rich functional groups. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Chen X, Yuan W, Jiang M, Xie X. Surface glycopolymer-modified functional macroporous polyHIPE obtained by ATRP for the removal of boron in water. NEW J CHEM 2018. [DOI: 10.1039/c7nj03737f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Macroporous polymeric monoliths PHIPE-PGAMA were obtained from polyHIPE with surface modification of PGAMA and used for boron removal.
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Affiliation(s)
- Xiangnan Chen
- Department of Dermatology, Tongji Hospital, Shanghai 10th People's Hospital, School of Medicine, School of Materials Science and Engineering, Tongji University
- Shanghai
- P. R. China
| | - Weizhong Yuan
- Department of Dermatology, Tongji Hospital, Shanghai 10th People's Hospital, School of Medicine, School of Materials Science and Engineering, Tongji University
- Shanghai
- P. R. China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Donghua University
| | - Miao Jiang
- Department of Dermatology, Tongji Hospital, Shanghai 10th People's Hospital, School of Medicine, School of Materials Science and Engineering, Tongji University
- Shanghai
- P. R. China
| | - Xiaoyun Xie
- Department of Dermatology, Tongji Hospital, Shanghai 10th People's Hospital, School of Medicine, School of Materials Science and Engineering, Tongji University
- Shanghai
- P. R. China
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11
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Borate-containing layered double hydroxide composites: synthesis, characterization and application as catalysts in the Beckmann rearrangement reaction of cyclohexanone oxime. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1143-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Lyu J, Liu H, Zeng Z, Zhang J, Xiao Z, Bai P, Guo X. Metal–Organic Framework UiO-66 as an Efficient Adsorbent for Boron Removal from Aqueous Solution. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04066] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiafei Lyu
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
| | - Hongxu Liu
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
| | - Zhouliangzi Zeng
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
| | - Jingshuang Zhang
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
| | - Zixing Xiao
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
| | - Peng Bai
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
| | - Xianghai Guo
- Department of Pharmaceutical Engineering, School of Chemical Engineering
and Technology and ‡Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China
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13
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Chen F, Guo L, Zhang X, Leong ZY, Yang S, Yang HY. Nitrogen-doped graphene oxide for effectively removing boron ions from seawater. NANOSCALE 2017; 9:326-333. [PMID: 27918048 DOI: 10.1039/c6nr07448k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Elemental boron exists in the form of boric acid or borate salts in aqueous solution. The human body is very sensitive to the amount of boron, and boron contamination in drinking water affects our health adversely. However, boron is not easily removed due to its small ionic size and is a problem to water treatment systems. Herein, we report a new method to remove boron using nitrogen-doped graphene oxide (N-GO). The maximum adsorption capacity we have obtained is 58.7 mg g-1 and this makes N-GO one of the best materials to adsorb boron. Real seawater with 5 mg L-1 as boron is used as a feed for testing and the absorption capacity is shown to be up to 2.42 mg g-1. This high adsorption capacity is mainly attributed to the large amount of hydroxyl groups distributed across the high surface area of graphene oxide and the enhanced adsorption that results from nitrogen-doped sites. Once N-GO is saturated with boron ions, it can be easily regenerated via acid treatment. Our proposed technique has high commercial value and we believe that it is very valuable to the water treatment industry.
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Affiliation(s)
- Fuming Chen
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore.
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Zhang X, Pu M, He S. Theoretical studies of structure and racemization mechanism of aspartate-intercalated hydrotalcite. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-015-2407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Kuroda Y, Yamaguchi K, Kuroda K, Mizuno N. Relationship between Aggregated Structures and Dispersibility of Layered Double Hydroxide Nanoparticles ca. 10 nm in Size and Their Application to Ultrafast Removal of Aqueous Anionic Dye. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150271] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Kazuya Yamaguchi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University
| | - Noritaka Mizuno
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
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16
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Xinhong Q, Sasaki K. Removal mechanism of polymeric borate by calcined layered double hydroxides containing different divalent metals. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.07.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Sorption of H 3 BO 3 /B(OH) 4 − on calcined LDHs including different divalent metals. J Colloid Interface Sci 2015; 445:183-194. [DOI: 10.1016/j.jcis.2014.12.093] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 12/26/2014] [Accepted: 12/27/2014] [Indexed: 11/21/2022]
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18
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Jin F, Al-Tabbaa A. Evaluation of novel reactive MgO activated slag binder for the immobilisation of lead and zinc. CHEMOSPHERE 2014; 117:285-294. [PMID: 25123653 DOI: 10.1016/j.chemosphere.2014.07.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 07/02/2014] [Accepted: 07/03/2014] [Indexed: 06/03/2023]
Abstract
Although Portland cement is the most widely used binder in the stabilisation/solidification (S/S) processes, slag-based binders have gained significant attention recently due to their economic and environmental merits. In the present study, a novel binder, reactive MgO activated slag, is compared with hydrated lime activated slag in the immobilisation of lead and zinc. A series of lead or zinc-doped pastes and mortars were prepared with metal to binder ratio from 0.25% to 1%. The hydration products and microstructure were studied by X-ray diffraction, thermogravimetric analysis and scanning electron microscopy. The major hydration products were calcium silicate hydrate and hydrotalcite-like phases. The unconfined compressive strength was measured up to 160 d. Findings show that lead had a slight influence on the strength of MgO-slag paste while zinc reduced the strength significantly as its concentration increased. Leachate results using the TCLP tests revealed that the immobilisation degree was dependent on the pH and reactive MgO activated slag showed an increased pH buffering capacity, and thus improved the immobilisation efficiency compared to lime activated slag. It was proposed that zinc was mainly immobilised within the structure of the hydrotalcite-like phases or in the form of calcium zincate, while lead was primarily precipitated as the hydroxide. It is concluded, therefore, that reactive MgO activated slag can serve as clinker-free alternative binder in the S/S process.
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Affiliation(s)
- Fei Jin
- Department of Engineering, University of Cambridge, Trumpington Road, Cambridge CB2 1PZ, UK.
| | - Abir Al-Tabbaa
- Department of Engineering, University of Cambridge, Trumpington Road, Cambridge CB2 1PZ, UK
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Qiu X, Sasaki K, Hirajima T, Ideta K, Miyawaki J. One-step synthesis of layered double hydroxide-intercalated gluconate for removal of borate. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2013.12.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Removal of boron species by layered double hydroxides: A review. J Colloid Interface Sci 2013; 402:114-21. [DOI: 10.1016/j.jcis.2013.03.051] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 03/26/2013] [Accepted: 03/28/2013] [Indexed: 11/19/2022]
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21
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Liu J, Xie L, Wang Z, Yuan J. Complexation-Enhanced Boron Removal in a Dual-Stage Nanofiltration Seawater Desalination Process. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2012.752010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Jiang JQ, Ashekuzzaman SM, Jiang A, Sharifuzzaman SM, Chowdhury SR. Arsenic contaminated groundwater and its treatment options in Bangladesh. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2012; 10:18-46. [PMID: 23343979 PMCID: PMC3564129 DOI: 10.3390/ijerph10010018] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/13/2012] [Accepted: 12/13/2012] [Indexed: 11/16/2022]
Abstract
Arsenic (As) causes health concerns due to its significant toxicity and worldwide presence in drinking water and groundwater. The major sources of As pollution may be natural process such as dissolution of As-containing minerals and anthropogenic activities such as percolation of water from mines, etc. The maximum contaminant level for total As in potable water has been established as 10 µg/L. Among the countries facing As contamination problems, Bangladesh is the most affected. Up to 77 million people in Bangladesh have been exposed to toxic levels of arsenic from drinking water. Therefore, it has become an urgent need to provide As-free drinking water in rural households throughout Bangladesh. This paper provides a comprehensive overview on the recent data on arsenic contamination status, its sources and reasons of mobilization and the exposure pathways in Bangladesh. Very little literature has focused on the removal of As from groundwaters in developing countries and thus this paper aims to review the As removal technologies and be a useful resource for researchers or policy makers to help identify and investigate useful treatment options. While a number of technological developments in arsenic removal have taken place, we must consider variations in sources and quality characteristics of As polluted water and differences in the socio-economic and literacy conditions of people, and then aim at improving effectiveness in arsenic removal, reducing the cost of the system, making the technology user friendly, overcoming maintenance problems and resolving sludge management issues.
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Affiliation(s)
- Jia-Qian Jiang
- School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow, Scotland G4 0BA, UK; E-Mails: (S.M.A.); (A.J.)
| | - S. M. Ashekuzzaman
- School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow, Scotland G4 0BA, UK; E-Mails: (S.M.A.); (A.J.)
| | - Anlun Jiang
- School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow, Scotland G4 0BA, UK; E-Mails: (S.M.A.); (A.J.)
| | - S. M. Sharifuzzaman
- Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong 4331, Bangladesh; E-Mails: (S.M.S.); (S.R.C.)
| | - Sayedur Rahman Chowdhury
- Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong 4331, Bangladesh; E-Mails: (S.M.S.); (S.R.C.)
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Jiang JQ, Ashekuzzaman SM. Development of novel inorganic adsorbent for water treatment. Curr Opin Chem Eng 2012. [DOI: 10.1016/j.coche.2012.03.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Morisada S, Rin T, Ogata T, Kim YH, Nakano Y. Adsorption removal of boron in aqueous solutions by amine-modified tannin gel. WATER RESEARCH 2011; 45:4028-4034. [PMID: 21645917 DOI: 10.1016/j.watres.2011.05.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2010] [Revised: 04/13/2011] [Accepted: 05/12/2011] [Indexed: 05/30/2023]
Abstract
A tannin gel (TG) synthesized from condensed tannin molecules has a remarkable ability to adsorb various metal ions in aqueous solutions. In the present study, the adsorption removal of boron in solutions at various pHs and temperatures has been examined using the TG and the amine-modified tannin gel (ATG) prepared with ammonia treatment of the TG. The adsorption amounts of boron for the TG and the ATG were relatively small and almost constant below pH 7, whereas the boron adsorption amounts increased with increasing pH in the range of pH above 7. Considering that in aqueous solutions above pH 7, the mole fraction of boric acid decreases while that of tetrahydroxyborate ion increases with increasing pH, the boron adsorption onto both gels takes place probably through the chelate formation of tetrahydroxyborate ion with the hydroxy and the amino groups in the gels. Besides, the adsorbability of the ATG for boron was higher than that of the TG due to the stable coordination bond between boron and nitrogen of the amino group in the ATG. The adsorption kinetics were adequately described by the pseudo-second order kinetic equation while the adsorption isotherms followed both the Langmuir and the Freundlich equations. The boron adsorbability of both the TG and the ATG at low boron concentration were comparable or fairly good compared with other adsorbents.
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Affiliation(s)
- Shintaro Morisada
- Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226 8502, Japan.
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Vasudevan S, Lakshmi J. Electrochemical removal of boron from water: Adsorption and thermodynamic studies. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20585] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Koilraj P, Srinivasan K. High Sorptive Removal of Borate from Aqueous Solution Using Calcined ZnAl Layered Double Hydroxides. Ind Eng Chem Res 2011. [DOI: 10.1021/ie102395m] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paulmanickam Koilraj
- Discipline of Inorganic Materials & Catalysis, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), GB Marg, Bhavnagar 364021, India
| | - Kannan Srinivasan
- Discipline of Inorganic Materials & Catalysis, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), GB Marg, Bhavnagar 364021, India
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Affiliation(s)
- Yonglan Xu
- CEHE, Faculty of Engineering & Physics Science, C5, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - Jia-Qian Jiang
- CEHE, Faculty of Engineering & Physics Science, C5, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
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