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Bao Y, Qi Y, Li Q, Wang L, Cao Z, Li J, Wu M, Chen J, Zhang H, Guo Q, Jiang B, Zhong J, Li J. Fluoride removal from coal mining water using novel polymeric aluminum modified activated carbon prepared through mechanochemical process. J Environ Sci (China) 2024; 146:226-236. [PMID: 38969450 DOI: 10.1016/j.jes.2023.07.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 07/07/2024]
Abstract
Defluoridation of coal mining water is of great significance for sustainable development of coal industry in western China. A novel one-step mechanochemical method was developed to prepare polymeric aluminum modified powder activated carbon (PAC) for effective fluoride removal from coal mining water. Aluminum was stably loaded on the PAC through facile solid-phase reaction between polymeric aluminum (polyaluminum chloride (PACl) or polyaluminum ferric chloride (PAFC)) and PAC (1:15 W/W). Fluoride adsorption on PACl and PAFC modified PAC (C-PACl and C-PAFC) all reached equilibrium within 5 min, at rate of 2.56 g mg-1 sec-1 and 1.31 g mg-1 sec-1 respectively. Larger increase of binding energy of Al on C-PACl (AlF bond: 76.64 eV and AlFOH bond: 77.70 eV) relative to that of Al on C-PAFC (AlF bond: 76.52 eV) explained higher fluoride uptake capacity of C-PACl. Less chloride was released from C-PACl than that from C-PAFC due to its higher proportion of covalent chlorine and lower proportion of ionic chlorine. The elements mapping and atomic composition proved the stability of Al loaded on the PAC as well as the enrichment of fluoride on both C-PACl and C-PAFC. The Bader charge, formation energy and bond length obtained from DFT computational results explained the fluoride adsorption mechanism further. The carbon emission was 7.73 kg CO2-eq/kg adsorbent prepared through mechanochemical process, which was as low as 1:82.3 to 1:8.07 × 104 compared with the ones prepared by conventional hydrothermal methods.
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Affiliation(s)
- Yixiang Bao
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Yonghui Qi
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Qiao Li
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Lei Wang
- China Coal Society, Chaoyang District, Beijing 100013, China
| | - Zhiguo Cao
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jie Li
- Guoneng Shendong Coal Technology Research Institute, Yulin 719315, China
| | - Min Wu
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jun Chen
- Bulianta Coal Mine, Shendong Coal Group Co. Ltd., Erdos 017209, China
| | - Haiqin Zhang
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Qiang Guo
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Binbin Jiang
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jinkui Zhong
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China
| | - Jingfeng Li
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China.
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El Messaoudi N, Franco DSP, Gubernat S, Georgin J, Şenol ZM, Ciğeroğlu Z, Allouss D, El Hajam M. Advances and future perspectives of water defluoridation by adsorption technology: A review. ENVIRONMENTAL RESEARCH 2024; 252:118857. [PMID: 38569334 DOI: 10.1016/j.envres.2024.118857] [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: 10/06/2023] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/05/2024]
Abstract
Fluoride contamination in water sources poses a significant challenge to human health and the environment. In recent years, adsorption technology has emerged as a promising approach for water defluoridation due to its efficiency and cost-effectiveness. This review article comprehensively explores the advances in water defluoridation through adsorption processes. Various adsorbents, including natural and synthetic materials, have been investigated for their efficacy in removing fluoride ions from water. The mechanisms underlying adsorption interactions are elucidated, shedding light on the factors influencing defluoridation efficiency. Moreover, the review outlines the current state of technology, highlighting successful case studies and field applications. Future perspectives in the field of water defluoridation by adsorption are discussed, emphasizing the need for sustainable and scalable solutions. The integration of novel materials, process optimization, and the development of hybrid technologies are proposed as pathways to address existing challenges and enhance the overall efficacy of water defluoridation. This comprehensive assessment of the advances and future directions in adsorption-based water defluoridation provides valuable insights for researchers, policymakers, and practitioners working towards ensuring safe and accessible drinking water for all.
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Affiliation(s)
- Noureddine El Messaoudi
- Laboratory of Applied Chemistry and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, 80000, Morocco.
| | - Dison Stracke Pfingsten Franco
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia
| | - Sylwia Gubernat
- Inżynieria Rzeszów S.A., ul. Podkarpacka 59A, 35-082, Rzeszów, Poland
| | - Jordana Georgin
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia.
| | - Zeynep Mine Şenol
- Sivas Cumhuriyet University, Faculty of Health Sciences, Department of Nutrition and Diet, 58140, Sivas, Turkey
| | - Zeynep Ciğeroğlu
- Department of Chemical Engineering, Faculty of Engineering and Natural Sciences, Usak University, Usak, 64300, Turkey
| | - Dalia Allouss
- Laboratory of Materials, Catalysis & Valorization of Natural Resources, FSTM, Hassan II University, Casablanca, Morocco
| | - Maryam El Hajam
- Advanced Structures and Composites Center, University of Maine, Orono, 04469, United States
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Zhang M. Enhanced fluoride removal using montmorillonite clay modified with CoFe 2O 4 and metal-organic frameworks. ENVIRONMENTAL RESEARCH 2024; 258:119389. [PMID: 38879110 DOI: 10.1016/j.envres.2024.119389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/04/2024] [Accepted: 06/07/2024] [Indexed: 06/23/2024]
Abstract
The use of modified clays can play an effective role as an effective adsorbent in removing fluoride (Flu) ions from water and aqueous solutions. In the present research, montmorillonite clay (MMt) was modified using CoFe2O4 magnetic particles and Al-Fe fumarate metal-organic framework (Al-Fe Fum) and was utilized as an efficient adsorbent for removing Flu from aqueous solution. The properties of MMt and MMt/CoFe2O4/Al-Fe Fum samples were investigated using different techniques. The results showed that with the modification of MMt using CoFe2O4 magnetic particles and the metal-organic framework of Al-Fe Fum, the BET surface has increased notably from 13.217 to 365.80 m2/g. To investigate the effect of independent variables and their interaction on the efficiency of the Flu adsorption, response surface method-central compound design (RSM-CCD) was served. Based on the results of ANOVA, the F-value and p-value parameters for the desired model were determined to be 783.09 and < 0.0001, respectively, which confirms the success and high ability of the model. The number of R2, adjusted R2, and Predicted R2 for adsorption of Flu ion was determined to be 0.998, 0.997, and 0.995, respectively, which shows that the proposed regression model can describe the process of adsorption and interaction between variables well. Compared to other kinetic models, the pseudo 2nd order kinetic model has a greater ability to describe the Flu adsorption behavior. The R2 parameter value determined that the Freundlich isotherm model has a suitable ability to investigate the isotherm behavior and confirms the effect of heterogeneous surfaces in the process. Generally, the outcomes signified that the MMt and MMt/CoFe2O4/Al-Fe Fum samples can be reused several times in the process of Flu adsorption, while the efficiency is more than 90%.
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Affiliation(s)
- Meng Zhang
- Chongqing Industry Polytechnic College, Chongqing, 401120, China.
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Li W, Xie P, Zhou H, Zhao H, Yang B, Xiong J. Preparation of Lanthanum-Modified Tea Waste Biochar and Its Adsorption Performance on Fluoride in Water. MATERIALS (BASEL, SWITZERLAND) 2024; 17:766. [PMID: 38591626 PMCID: PMC10856180 DOI: 10.3390/ma17030766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 04/10/2024]
Abstract
In this study, tea waste was used as a raw material, and TBC (tea waste biochar) was prepared by pyrolysis at 700 °C. La(NO3)3·6H2O was used as the modifier to optimize one-way modification; the orthogonal experiment was undertaken to determine the optimal preparation conditions; and La-TBC (lanthanum-modified biochar) was obtained. The key factors for the adsorption of fluoride by La-TBC were investigated by means of batch adsorption experiments, and kinetics and isothermal adsorption experiments were carried out on the adsorption of fluoride in geothermal hot spring water. The adsorption mechanism of fluoride by La-TBC was analyzed via characterization methods such as SEM-EDS (Scanning Electron Microscope and Energy Dispersive Spectrometer), BET (Brunauer-Emmett-Teller), FTIR (Fourier transform infrared), XRD (X-ray diffraction), and so on. The results show that La-TBC had the best adsorption effect on fluoride at pH 7. The process of adsorption of fluoride follows the pseudo-second-order kinetics and Langmuir isothermal model, and the maximum theoretical adsorption quantity was 47.47 mg/g at 80 °C, while the removal rate of fluoride from the actual geothermal hot spring water reached more than 95%. The adsorption process was dominated by the monolayer adsorption of chemicals, and the mechanisms mainly include pore filling, ion exchange, and electrostatic interaction.
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Affiliation(s)
| | | | | | | | | | - Jian Xiong
- School of Ecology and Environment, Tibet University, Lhasa 850012, China; (W.L.); (P.X.); (H.Z.); (H.Z.); (B.Y.)
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Bhan C, Singh J, Sahu N, Koduru JR. Reutilization of carbon of waste filter cartridge after its surface modification for the fluoride removal from water by continuous flow process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:87483-87499. [PMID: 37422558 DOI: 10.1007/s11356-023-28573-y] [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: 12/28/2022] [Accepted: 06/29/2023] [Indexed: 07/10/2023]
Abstract
In the present study, the waste carbon cartridge of the water filter was modified and reutilized for defluoridation of water. The modified carbon was characterized by particle size analysis (PSA), Fourier transformed infrared spectroscopy (FTIR), zeta potential, pHzpc, energy-dispersive X-ray (EDS), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray crystallography (XRD). The adsorptive nature of modified carbon was investigated with pH (4-10), dose (1-5 g/L), contact time (0-180 min), temperature (25-55 °C), fluoride concentration (5-20 mg/L), and the effect of the competitive ions. Adsorption isotherm, kinetics, thermodynamics, and breakthrough studies were evaluated for fluoride uptake on surface-modified carbon (SM*C). Fluoride adsorption on the carbon accepted Langmuir model (R2 = 0.983) and pseudo-second-order kinetic (R2 = 0.956). The presence of HCO3- in the solution reduced the elimination of fluoride. The carbon was regenerated and reused four times; the removal percentage was decreased from 92 to 31.7%. This adsorption phenomenon showed exothermic behavior. The maximum fluoride uptake capacity of SM*C achieved 2.97 mg/g at 20 mg/L of initial concentration. The modified carbon cartridge of the water filter was successfully employed for fluoride removal from water.
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Affiliation(s)
- Chandra Bhan
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India
| | - Jiwan Singh
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India.
| | - Naincy Sahu
- Department of Environmental Sciences, Dr. Rammanohar Lohia Avadh University, Ayodhya, Uttar Pradesh, 224001, India
| | - Janardhan Reddy Koduru
- Department of Environmental Engineering, Kwangwoon University, Seoul, 139-701, Republic of Korea
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Zhou Z, Ali A, Su J, Wang Z, Huang T, Li T. In-situ modified biosynthetic crystals with lanthanum for fluoride removal based on microbially induced calcium precipitation: Characterization, kinetics, and mechanism. CHEMOSPHERE 2023; 327:138472. [PMID: 36963578 DOI: 10.1016/j.chemosphere.2023.138472] [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: 12/31/2022] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 06/18/2023]
Abstract
In this research, in-situ modified biosynthetic crystals with lanthanum (BC-La) were synthesized based on anaerobic microbially induced calcium precipitation (MICP) and investigated its capacity for groundwater defluoridation under various operational conditions. The kinetic and thermodynamic models were simulated to explore the effect of the material on the removal of fluoride ion (F-) under various parameters (pH, initial concentration of F-, and temperature). BC-La had the maximum F- adsorption capacity of 10.92 mg g-1 and 96.66% removal efficiency. The pseudo-second-order kinetic model and Langmuir isotherm model were the best kinetic and isotherm models for F- removal from BC-La, which indicated that F- were mainly spontaneously removed through chemisorption and adsorption processes. The specific surface area was 54.26 m2 g-1 and the average pore size was 9.0670 nm. BC-La mainly contained LaCO3OH, LaPO4, CaCO3, Ca5 (PO4)3OH, and F- was mainly removed through ion exchange with the material surface. Moreover, OH-, PO43-, and CO32- significantly influenced the F- removal. This work suggested a novel method for in-situ modification of anaerobic biosynthetic crystals, which improved the defluoridation effect of traditional biosynthetic crystals, increased the stability of the BC-La and allowed to remove F- from groundwater consistently.
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Affiliation(s)
- Zhennan Zhou
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; State Key Laboratory of Green Building in West China, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Zhao Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Tinglin Huang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; State Key Laboratory of Green Building in West China, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Tianmeng Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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Turki T, Hamdouni A, Enesca A. Fluoride Adsorption from Aqueous Solution by Modified Zeolite-Kinetic and Isotherm Studies. Molecules 2023; 28:molecules28104076. [PMID: 37241817 DOI: 10.3390/molecules28104076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/02/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Fluorine is a very common element in the Earth's crust and is present in the air, food, and in natural waters. It never meets in the free state in nature due to its high reactivity, and it comes in the form of fluorides. Depending on the concentration of fluorine absorbed, it may be beneficial or harmful to human health. Similar to any trace element, fluoride ion is beneficial for the human body at low levels, but as soon as its concentration becomes too high, it is toxic, inducing dental and bone fluorosis. The lowering of fluoride concentrations that exceed the recommended standards in drinking water is practiced in various ways around the world. The adsorption process has been classified as one of the most efficient methods for the removal of fluoride from water as it is environmentally friendly, easy to operate, and cost-effective. The present study deals with fluoride ion adsorption on modified zeolite. There are several influential parameters, such as zeolite particle size, stirring rate, solution pH, initial concentration of fluoride, contact time, and solution temperature. The maximum removal efficiency of the modified zeolite adsorbent was 94% at 5 mg/L fluoride initial concentration, pH 6.3, and 0.5 g modified zeolite mass. The adsorption rate increases accordingly with increases in the stirring rate and pH value and decreases when the initial fluoride concentration is increased. The evaluation was enhanced by the study of adsorption isotherms using the Langmuir and Freundlich models. The Langmuir isotherm corresponds with the experimental results of the fluoride ions adsorption with a correlation value of 0.994. The kinetic analysis results of the fluoride ions adsorption on modified zeolite allowed us to demonstrate that the process primarily follows a pseudo-second-order and then, in the next step, follows a pseudo-first-order model. Thermodynamic parameters were calculated, and the ΔG° value is found to be in the range of -0.266 kJ/mol up to 1.613 kJ/mol amidst an increase in temperature from 298.2 to 331.7 K. The negative values of the free enthalpy ΔG° mean that the adsorption of fluoride ions on the modified zeolite is spontaneous, and the positive value of the enthalpy ∆H° shows that the adsorption process is endothermic. The ∆S° values of entropy indicate the fluoride adsorption randomness characteristics at the zeolite-solution interface.
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Affiliation(s)
- Thouraya Turki
- Natural Water Treatment Laboratory, Water Researches and Technologies Center (CERTE), Technopark of Borj-Cedria, P.O. Box 273, Soliman 8020, Tunisia
| | - Abdelkader Hamdouni
- High Institute of Sciences and Technology of Environment of Borj Cedria, University of Carthage, Carthage 1054, Tunisia
| | - Alexandru Enesca
- Product Design, Mechatronics and Environment Department, Transilvania University of Brasov, Eroilor 29 Street, 500036 Brasov, Romania
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Wang DC, Xu MD, Jin Z, Xiao YF, Chao Y, Li J, Chen SH, Ding Y. Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1082. [PMID: 36985976 PMCID: PMC10051765 DOI: 10.3390/nano13061082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/13/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
In the present work, the porous MgO nanosheet-modified activated carbon fiber felt (MgO@ACFF) was prepared for fluoride removal. The MgO@ACFF was characterized by XRD, SEM, TEM, EDS, TG, and BET. The fluoride adsorption performance of MgO@ACFF also has been investigated. The adsorption rate of the MgO@ACFF toward fluoride is fast; more than 90% of the fluoride ions can be adsorbed within 100 min, and the adsorption kinetics of MgO@ACFF can be fitted in a pseudo-second-order model. The adsorption isotherm of MgO@ACFF fitted well in the Freundlich model. Additionally, the fluoride adsorption capacity of MgO@ACFF is larger than 212.2 mg/g at neutral. In a wide pH range of 2-10, the MgO@ACFF can efficiently remove fluoride from water, which is meaningful for practical usage. The effect of co-existing anions on the fluoride removal efficiency of the MgO@ACFF also has been studied. Furthermore, the fluoride adsorption mechanism of the MgO@ACFF was studied by the FTIR and XPS, and the results reveal a hydroxyl and carbonate co-exchange mechanism. The column test of the MgO@ACFF also has been investigated; 505-bed volumes of 5 mg/L fluoride solution can be treated with effluent under 1.0 mg/L. It is believed that the MgO@ACFF is a potential candidate for a fluoride adsorbent.
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Affiliation(s)
- De-Cai Wang
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Min-Da Xu
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Zhen Jin
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Yi-Fan Xiao
- School of Environment and Energy Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Yang Chao
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Jie Li
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Shao-Hua Chen
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Yi Ding
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
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Sadhu M, Padmaja Sudhakar P. Lanthanum cholate Fibres: A novel adsorbent for fluoride removal. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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10
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Hiremath PG, Phattepur H, Baradol OS, Shreyas KV. Application of response surface methodology for defluoridation of water using zirconia-activated carbon nanocomposite. Chem Ind 2022. [DOI: 10.1080/00194506.2022.2144486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Poornima G. Hiremath
- Department of Chemical Engineering, Siddaganga Institute of Technology, Tumkur, India
| | - Harish Phattepur
- Department of Chemical Engineering, Siddaganga Institute of Technology, Tumkur, India
| | - Omkar S. Baradol
- Department of Chemical Engineering, Siddaganga Institute of Technology, Tumkur, India
| | - K. V. Shreyas
- Department of Chemical Engineering, Siddaganga Institute of Technology, Tumkur, India
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Yang R, Chen J, Zhang Z, Wu D. Performance and mechanism of lanthanum-modified zeolite as a highly efficient adsorbent for fluoride removal from water. CHEMOSPHERE 2022; 307:136063. [PMID: 35985389 DOI: 10.1016/j.chemosphere.2022.136063] [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: 05/26/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Defluoridation of water is still challenging due to the fluoride pollution of both groundwater and surface water worldwide. In this study, lanthanum-modified zeolite (LMZ) was synthesized from coal fly ash and was investigated for fluoride removal from water by conducting batch and column experiments. Our results indicated that the process of fluoride adsorption was endothermic and the adsorption kinetics on LMZ followed the pseudo-second-order model. A higher temperature increased both the capacity and the rate of adsorption. The maximum fluoride adsorption capacity of LMZ reached 141.5 mg/g with a F/La molar ratio of 4.21, as estimated from the Langmuir model which best fitted the isotherm data. Fluoride adsorption greatly depended on pH, with optimal performance being achieved within ∼5.0-∼7.0. The point of zero charge of LMZ was pH 8.8, at which only bicarbonate ions greatly affected fluoride removal. However, no competing effect was observed at pH 6.3 for all tested anions including chloride, sulphate, nitrate, bicarbonate and acetate. The dominant adsorption mechanism was the ligand exchange of fluoride with hydroxyls on LMZ, as illustrated by the rise in pH due to fluoride adsorption and by the molecular scale spectroscopic FTIR, Raman and XPS studies. Fluoride adsorbed on LMZ was successfully desorbed using NaOH solution, and regenerated LMZ could be reused. The results of column studies showed that LMZ granulated with alginate performed well in treating F--containing water. In conclusion, LMZ is a promising material for efficient defluoridation from water.
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Affiliation(s)
- Renjie Yang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Jiabin Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Zhiyong Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Deyi Wu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China.
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Martinez-Vargas DR, Larios-Durán E, Rangel-Mendez JR, Chazaro-Ruiz LF. Fluoride electrosorption in the presence of competing anions of environmental relevance by two activated carbons modified with La(III). Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Vences-Alvarez E, Chazaro-Ruiz LF, Rangel-Mendez JR. New bimetallic adsorbent material based on cerium-iron nanoparticles highly selective and affine for arsenic(V). CHEMOSPHERE 2022; 297:134177. [PMID: 35245593 DOI: 10.1016/j.chemosphere.2022.134177] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 01/14/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
Bimetallic oxy(hydroxides) have gain great interest in water treatment systems based on adsorption processes. Their high OH groups density, in addition to inheriting the oxides properties make them highly promising adsorbents of anions. In this work, highly affine and selective bimetallic oxyhydroxides of cerium and iron (Ce:Fe-P's) for arsenic(V) were synthesized by implementing an assisted microwave methodology. The Ce:Fe-P's were characterized by various techniques (SEM, FTIR, XRD and XPS) and the As(V) adsorption capacity and kinetics as well as the effect of pH and the presence of coexisting anions were determined. The results showed that Ce:Fe-P's have an outstanding As(V) adsorption capacity (179.8 mg g-1 at Ce = 3 mg L-1) even at low concentrations (120 mg g-1 at Ce = 37 μg L-1). Moreover, the adsorption equilibrium was reached very fast, just in 3 min, with an adsorption rate of 0.123 mg min-1, that is, 80% of the initial As(V) concentration of 5 mg L-1 was removed in the first 3 min. The arsenic adsorption capacity decreased only up to 20% at pH above 7, attributed to electrostatic repulsions due to the adsorbent's pHPZC, which was 6.8. On the other hand, the arsenic adsorption capacity of Ce:Fe-P's decreased just 21% in the presence of 10 mg L-1 of each of the following competing anions: F-, Cl-, SO42-, NO3-, PO43- and CO32-, which usually coincide in contaminated water with As(V). Ce:Fe-P's has proven to be one of the most promising As(V) adsorbent materials reported so far in the literature, because it presented an outstanding adsorption capacity and at the same time a very fast adsorption speed. Furthermore, the pH and the concentration of coexisting anions caused little interference in the adsorption processes. Due to the above, the Ce:Fe-P's is already in the process of intellectual protection.
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Affiliation(s)
- Esmeralda Vences-Alvarez
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., San Luis Potosí, S.L.P., 78216, Mexico
| | - Luis F Chazaro-Ruiz
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., San Luis Potosí, S.L.P., 78216, Mexico
| | - J Rene Rangel-Mendez
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., San Luis Potosí, S.L.P., 78216, Mexico.
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14
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Fabrication of hydroxyapatite embedded cerium-organic frameworks for fluoride capture from water. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118830] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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15
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Sikha S, Mandal B. Ultrasound-Assisted facile synthesis of Ce/Fe nanoparticles impregnated activated carbon for fluoride remediation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120785] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Solanki YS, Agarwal M, Gupta AB, Gupta S, Shukla P. Fluoride occurrences, health problems, detection, and remediation methods for drinking water: A comprehensive review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:150601. [PMID: 34597567 DOI: 10.1016/j.scitotenv.2021.150601] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 09/03/2021] [Accepted: 09/22/2021] [Indexed: 05/21/2023]
Abstract
Fluoride contamination has become a considerable threat to our society worldwide. Fluoride in drinking water is primarily due to rich fluoride soil, volcanic activity, forage, grasses and grains, and anthropogenic reasons. World Health Organization has regulated the upper limit for fluoride in drinking water to be 1.5 mg/L while different countries have set their standards according to their circumstances. Excess amounts of fluoride ions in drinking water can cause dental fluorosis, skeletal fluorosis, arthritis, bone damage, osteoporosis, muscular damage, fatigue, joint-related problems, and chronicle issues. In extreme conditions, it could adversely damage the heart, arteries, kidney, liver, endocrine glands, neuron system, and several other delicate parts of a living organism, briefed in the present article. Moreover, a comprehensive scenario for the situations in countries like, China, Canada, Mexico, United States, Yemen, Pakistan, Saudi Arabia, South Korea, Sri Lanka, Indonesia, Iran, Turkey, Australia, and India affected with high fluoride levels in ground water has been described. To analyze the presence of fluoride molecule, out of different detections methods, ion selective and colorimetric method has been adopted for real situation in the field of water application. Also, different methods to remove fluoride from water like reverse osmosis, nano filtration, adsorption, ion-exchange, and precipitation/coagulation with their removal mechanism were highlighted in the review. Moreover, the applicability of the approach with the prospect of country's economic status has been discussed, due to high cost and maintenance the membrane technology is not popular in developing countries like India, Senegal, Tanzania, and Kenya which employ adsorption and coagulation-precipitation for fluoride removal. It is noticeable from literature study that different approaches show unique potential for defluoridation. Some key parameters and mechanistic adaptations which could pave the defluoridation methods to newer horizons have been put forward.
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Affiliation(s)
- Yogendra Singh Solanki
- Department of Chemical Engineering, Malaviya National Institute of Technology, Jaipur 302017, India
| | - Madhu Agarwal
- Department of Chemical Engineering, Malaviya National Institute of Technology, Jaipur 302017, India.
| | - A B Gupta
- Department of Civil Engineering, Malaviya National Institute of Technology, Jaipur 302017, India
| | - Sanjeev Gupta
- Grasim Industries Limited (Aditya Birla Group), Bharuch, Gujrat 392012, India
| | - Pushkar Shukla
- Grasim Industries Limited (Aditya Birla Group), Bharuch, Gujrat 392012, India
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17
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Zhang Y, Sun Q, Jiang Z, Wang J, Cao B, Zhang S, Yang C, Tao Y, Qu J. Evaluation of the effects of adding activated carbon at different stages of composting on metal speciation and bacterial community evolution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:151332. [PMID: 34743881 DOI: 10.1016/j.scitotenv.2021.151332] [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: 06/06/2021] [Revised: 10/26/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Information on the passivation of heavy metals (HMs) by environmental factors and microbial communities during activated carbon (AC) composting remains limited. Thus, this study elucidated the dynamic changes in HM fractions during chicken manure composting after AC amendment at different periods (initial period: T1, thermophilic period: T2, cooling period: T3). Compared with the initial stage, organic matter concentrations in the control, T1, T2, and T3 groups decreased by 15.9%, 25.8%, 22.6%, and 19.0%, respectively, at the end of composting. The HM-fractions results showed that the passivation sequence of HMs by AC was the highest for Zn, followed by Cu and Pb. AC addition in T2 significantly affected the bacterial community. Variance partitioning analysis indicated that AC accelerated the passivation effect on Zn and Pb by regulating environmental factors, and on Cu by influencing the microbial community. These results are helpful for understanding the mechanism of HM passivation in AC aerobic composting, and are also conducive to the environmentally friendly treatment of livestock and poultry manure.
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Affiliation(s)
- Ying Zhang
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
| | - Qinghong Sun
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Zhao Jiang
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Jianmin Wang
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Bo Cao
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Shuo Zhang
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Chao Yang
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Yue Tao
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Jianhua Qu
- School of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
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18
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Bakhta S, Sadaoui Z, Bouazizi N, Samir B, Allalou O, Devouge-Boyer C, Mignot M, Vieillard J. Functional activated carbon: from synthesis to groundwater fluoride removal. RSC Adv 2022; 12:2332-2348. [PMID: 35425243 PMCID: PMC8979020 DOI: 10.1039/d1ra08209d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/30/2021] [Indexed: 11/22/2022] Open
Abstract
Developing green and functional adsorbents for the removal of inorganic pollutants from industrial wastewater is still a great challenge. Activated carbons (ACs) are promising eco-friendly materials for adsorption applications. This study reports on the preparation and functionalization of AC and its application for fluoride removal from water. Activated carbon was prepared from date stems, and the material was employed as a support for different modifications such as incorporation of Al(OH)3, in situ dispersion of aluminum particles (Al0) and grafting of 3-(aminopropyl)triethoxysilane (APTES). The resulting functional adsorbents were fully characterized by Fourier transform infrared spectroscopy, scanning electronic microscopy, energy dispersive X-ray fluorescence, X-ray diffraction, differential scanning calorimetry and zeta potential analysis. The results evidenced successful surface modifications. All adsorbents had affinity for the removal of fluoride ions (F−). The highest F− removal rate was up to 20 mg g−1 for AC-Al(OH)3. Removal of fluoride ions obeyed Langmuir isotherms and a second-order kinetic model, and reached 99% uptake. The AC-Al(OH)3 adsorbent was successfully used to treat a groundwater solution contaminated by fluoride ions. These results open an interesting avenue for developing eco-friendly functionalized AC for adsorption applications. Conversion and surface modification of date stems to obtain a relevant adsorbent to remove fluoride contamination.![]()
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Affiliation(s)
- Soumia Bakhta
- Laboratory of Reaction Engineering, Faculty of Mechanical and Processes Engineering, University of Sciences and Technology Houari-Boumediene BP No. 32, El alia, Bab Ezzouar 16111 Algiers Algeria
| | - Zahra Sadaoui
- Laboratory of Reaction Engineering, Faculty of Mechanical and Processes Engineering, University of Sciences and Technology Houari-Boumediene BP No. 32, El alia, Bab Ezzouar 16111 Algiers Algeria
| | - Nabil Bouazizi
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014) 27000 Evreux France
| | - Brahim Samir
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014) 27000 Evreux France
| | - Ouiza Allalou
- Laboratory of Reaction Engineering, Faculty of Mechanical and Processes Engineering, University of Sciences and Technology Houari-Boumediene BP No. 32, El alia, Bab Ezzouar 16111 Algiers Algeria
| | - Christine Devouge-Boyer
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014) 76800 Saint Etienne du Rouvray France
| | - Melanie Mignot
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014) 76800 Saint Etienne du Rouvray France
| | - Julien Vieillard
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014) 27000 Evreux France
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19
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Li W, Dai R, Al-shiaani NHA, Li J, Sun C, Wang K, Chen K, Guo A, Liu H. High-efficiency N-doped activated carbon-based defluoridation adsorbent prepared from itaconic acid fermentation waste liquid. NEW J CHEM 2022. [DOI: 10.1039/d2nj03699a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Excessive amounts of fluoride in water cause irreversible harm to people and seriously threaten human health.
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Affiliation(s)
- Weining Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Renwei Dai
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Nabil. H. A. Al-shiaani
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Jiakang Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Chengyu Sun
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Kunyin Wang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Kun Chen
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - Aijun Guo
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
| | - He Liu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao, Shandong 266580, China
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20
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Patyal V, Jaspal D, Khare K. Materials for phosphorous remediation: a review. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1989683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Vandana Patyal
- Department of Civil Engineering, Symbiosis Institute of Technology (SIT), Symbiosis International (Deemed University), Pune, Maharashtra, India
| | - Dipika Jaspal
- Department of Applied Science, Symbiosis Institute of Technology (SIT), Symbiosis International (Deemed University), Pune, Maharashtra, India
| | - Kanchan Khare
- Department of Civil Engineering, Symbiosis Institute of Technology (SIT), Symbiosis International (Deemed University), Pune, Maharashtra, India
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21
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Correlation between physicochemical and electrochemical properties of an activated carbon doped with lanthanum for fluoride electrosorption. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118702] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Wimalasiri AKVK, Fernando MS, Dziemidowicz K, Williams GR, Koswattage KR, Dissanayake DP, de Silva KMN, de Silva RM. Structure-Activity Relationship of Lanthanide-Incorporated Nano-Hydroxyapatite for the Adsorption of Fluoride and Lead. ACS OMEGA 2021; 6:13527-13543. [PMID: 34095648 PMCID: PMC8173547 DOI: 10.1021/acsomega.0c05935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 05/03/2021] [Indexed: 05/10/2023]
Abstract
The growing demand for water purification provided the initial momentum to produce lanthanide-incorporated nano-hydroxyapatite (HAP) such as HAP·CeO2, HAP·CeO2·La(OH)3 (2:1), and HAP·CeO2·La(OH)3 (3:2). These materials open avenues to remove fluoride and lead ions from contaminated water bodies effectively. Composites of HAP containing CeO2 and La(OH)3 were prepared using in situ wet precipitation of HAP, followed by the addition of Ce(SO4)2 and La(NO3)3 into the same reaction mixture. The resultant solids were tested for the removal of fluoride and lead ions from contaminated water. It was found that the composite HAP·CeO2 shows fluoride and lead ion removal capacities of 185 and 416 mg/g, respectively. The fluoride removal capacity of the composite was improved when La(OH)3 was incorporated and it was observed that the composite HAP·CeO2·La(OH)3 (3:2) has the highest recorded fluoride removal capacity of 625 mg/g. The materials were characterized using scanning electron microscopy-energy-dispersive X-ray (SEM-EDX) spectrometry, Fourier transform infrared (FT-IR) spectrometry, X-ray powder diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) surface area analysis. Analysis of results showed that Ce and La are incorporated in the HAP matrix. Results of kinetic and leaching analyses indicated a chemisorptive behavior during fluoride and lead ion adsorption by the composites; meanwhile, the thermodynamic profile shows a high degree of feasibility for fluoride and lead adsorption.
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Affiliation(s)
| | - M. Shanika Fernando
- Centre
for Advanced Materials and Devices (CAMD), Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka
| | - Karolina Dziemidowicz
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Gareth R. Williams
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | | | - D. P. Dissanayake
- Centre
for Advanced Materials and Devices (CAMD), Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka
| | - K. M. Nalin de Silva
- Centre
for Advanced Materials and Devices (CAMD), Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka
| | - Rohini M. de Silva
- Centre
for Advanced Materials and Devices (CAMD), Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka
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23
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Removal of Fluorides from Aqueous Solutions Using Exhausted Coffee Grounds and Iron Sludge. WATER 2021. [DOI: 10.3390/w13111512] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Many countries are confronted with a striking problem of morbidity of fluorosis that appears because of an increased concentration of fluorides in drinking water. The objective of this study is to explore opportunities for removal of fluoride from aqueous solutions using cheap and easily accessible adsorbents, such as exhaustive coffee grounds and iron sludge and to establish the efficiency of fluoride removal. Twelve doses (1, 2, 3, 4, 5, 6, 10, 20, 30, 40, 50 and 60 g/L) of adsorbents were used and five durations of the sorption process (30, 60, 90, 120 and 150 min). The results showed that the most optimum dose of iron sludge for 3 mg/L of fluoride removal was 30 g/L and the contact time was 30 min, the efficiency of fluoride removal achieved 62.92%; the most optimum dose of exhausted coffee grounds was 60 g/L with the most optimum contact time of 60 min; at a dose of 50 g/L with contact time of 90 min, the efficiency of fluoride removal achieved 56.67%. Findings demonstrate that adsorbents have potential applicability in fluoride removal up to the permissible norms.
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24
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He L, Wang G, Zhang X, Zhang Y, Chen Y. Lanthanum-doped activated carbon derived from municipal sludge for enhanced defluoridation: characteristics and mechanism. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1643-1652. [PMID: 33107858 DOI: 10.2166/wst.2020.435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The sewage sludge production has been increasing along with the ever-growing populations and wastewater treatment rate. Lanthanum-doped activated carbon (AC-La) was derived from municipal sludge via chemical activation and utilized for fluoride removal. Batch experiments were conducted to discuss the effect of lanthanum dosage, time and pH on the adsorption process. The results showed that 4 g/L AC-La exhibited a fluoride removal rate of 80.9% with 10 mg/L initial fluoride concentration, and the optimal pH range for adsorption was 3-10. X-ray fluorescence, scanning electron microscopy with energy-dispersive X-ray spectroscopy, Brunauer-Emmett-Teller, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses were conducted to analyze the microstructure and chemical properties of sludge, unmodified activated carbon (AC) and AC-La. The results showed that with initial lanthanum dosage of 15 wt%, the final loading amount of La in AC-La was 13.8 wt%. After modification, the specific surface area of AC-La increased from 1.8 m2/g (sludge) to 133.0 m2/g. The removal mechanism of fluoride onto AC-La was mainly the inner-sphere complexation between lanthanum and fluoride, facilitated by exchange interaction with hydroxyls. A stability study showed that AC-La maintained a quite small dissolution and was safe in waters (La dissolution rate < 0.2‰).
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Affiliation(s)
- Lizhi He
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China E-mail:
| | - Guoqiao Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China E-mail:
| | - Xinxin Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China E-mail:
| | - Yujian Zhang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China E-mail:
| | - Yao Chen
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China E-mail:
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25
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Bakhta S, Sadaoui Z, Lassi U, Romar H, Kupila R, Vieillard J. Performances of metals modified activated carbons for fluoride removal from aqueous solutions. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137705] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Pang T, Aye Chan TS, Jande YAC, Shen J. Removal of fluoride from water using activated carbon fibres modified with zirconium by a drop-coating method. CHEMOSPHERE 2020; 255:126950. [PMID: 32380266 DOI: 10.1016/j.chemosphere.2020.126950] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Metal-modified carbon materials have been widely used for fluoride removal, but the traditional impregnation by soaking method suffers from low loading of metals and substantial use of chemicals. This study proposed a new approach to prepare zirconium modified activated carbon fibres (Zr-ACF) by a drop-coating method. Using the same amount of chemicals, the drop-coating method yielded a 5.5 times higher fluoride adsorption capacity than the soaking method due to more effective loading of Zr(IV) onto ACF. The effects of various preparation conditions, including the addition of a complexing agent (oxalic acid) and Zr/ACF mass ratio (0.2-1), were investigated. Zr-ACF prepared by drop-coating was characterised by SEM and BET, and the functional groups involved in the anchoring of Zr(IV) on ACF and the adsorption of fluoride onto Zr-ACF were identified by FTIR and XPS. Adsorption experiments at pH between 3 and 11 revealed that ion exchange and electrostatic attraction were the main adsorption mechanisms at different pH levels. Co-existing anions such as CO32-, HCO3- and Cl- had an insignificant negative impact (<5%) on fluoride adsorption capacity while SO42- decreased fluoride adsorption capacity by 11.5%. The adsorption kinetics followed the pseudo-second-order model. The adsorption isotherms followed the Langmuir isotherm model with a maximum fluoride adsorption capacity of 28.50 mg/L at 25 °C, which was higher than other carbon-based materials in the literature. The remarkable improvement of adsorption capacity and reduced chemical consumption demonstrate that Zr-ACF prepared by drop-coating is a promising adsorbent for fluoride removal.
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Affiliation(s)
- Tianting Pang
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK
| | - Thet Su Aye Chan
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK
| | - Yusufu Abeid Chande Jande
- Water Infrastructure and Sustainable Energy Futures (WISE-Futures) Center, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania; Department of Materials and Energy Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
| | - Junjie Shen
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK; Centre for Advanced Separations Engineering (CASE), University of Bath, Bath, BA2 7AY, UK; Water Innovation and Research Centre (WIRC), University of Bath, Bath, BA2 7AY, UK.
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27
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Vences-Alvarez E, Lopez-Valdivieso A, Cházaro-Ruíz LF, Flores-Zuñiga H, Rangel-Mendez JR. Enhanced arsenic removal from water by a bimetallic material ZrOx-FeOx with high OH density. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:33362-33372. [PMID: 32533478 DOI: 10.1007/s11356-020-09492-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Abstract
Arsenic in groundwater for human consumption has negative effects on human's health worldwide. Due to the above, it is essential to invest in the development of new materials and more efficient technology for the elimination of such priority contaminants as arsenic. Therefore, in the present work, it was synthesized an amorphous hybrid material ZrOx-FeOx with a high density of OH groups, to improve the arsenic adsorption capacity of iron (FeOx) and zirconium (ZrOx) that makes up the bimetallic oxyhydroxide. The spectra of FT-IR and pKa's distribution suggest that in the synthesized binary oxides, a new union between the two metallic elements is formed by means of an oxygen (metal-O-metal). In addition, TEM profiles suggest that there are chemical interactions between both metals since no individual particles of iron oxide and zirconium oxide were found. According to the results, the adsorption capacity of the ZrOx-FeOx material increases 4.5 and 1.4 times with respect to FeOx and ZrOx, respectively. At pH 6, the maximum adsorption capacity was 27 mg g-1, but at pH greater than 7, the arsenic adsorption capacity onto ZrOx-FeOx decreased 66%. Graphical Abstract.
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Affiliation(s)
- Esmeralda Vences-Alvarez
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, S.L.P., México
| | - Alejandro Lopez-Valdivieso
- Surface Chemistry Lab, Instituto de Metalurgia, Universidad Autónoma de San Luis Potosí, 78210, San Luis Potosí, S.L.P., México
| | - Luis F Cházaro-Ruíz
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, S.L.P., México
| | - Horacio Flores-Zuñiga
- Advanced Materials Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, S.L.P., México
| | - Jose Rene Rangel-Mendez
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, S.L.P., México.
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Kim M, Choong CE, Hyun S, Park CM, Lee G. Mechanism of simultaneous removal of aluminum and fluoride from aqueous solution by La/Mg/Si-activated carbon. CHEMOSPHERE 2020; 253:126580. [PMID: 32464758 DOI: 10.1016/j.chemosphere.2020.126580] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/17/2020] [Accepted: 03/20/2020] [Indexed: 06/11/2023]
Abstract
La/Mg/Si-activated carbon derived from palm shell has been a suitable material for removal of aluminum and fluoride from aqueous solution. In the study, the mechanism of simultaneous removal of aluminum and fluoride by La/Mg/Si-activated carbon (La/Mg/Si-AC) was investigated to understand its high efficiency. It was found that the removal of aluminum and fluoride by La/Mg/Si-AC was favored at lower pH compared to the point of zero charge of La/Mg/Si-AC and high temperature. Adsorption capacity of Al(OH)4- was about 10 times higher than that of F- due to the strong binding affinity of Al(OH)4- on protonated surface and competition between F- and OH- toward charged adsorption site. Kinetics results showed that the aluminum and fluoride adsorption were explained using the pseudo-second-order kinetic model and intra-particle diffusion model. Adsorption process of Al(OH)4- and F- was driven by the potential rate-limiting step involved in mass transport process occurred on the boundary diffusion layer of porous adsorbent surface. Electrostatic interaction between protonated surface of La/Mg/Si-AC and negatively charged ions (i.e., Al(OH)4- and F-) as well as ion-exchange between hydroxide and ionic metal species were important mechanisms in the process of aluminum and fluoride adsorption. Driving forces for adsorption of individual Al(OH)4- and F- were not entirely different. Identifying the dominant mechanism will be helpful in understanding the adsorption process and developing new adsorbent.
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Affiliation(s)
- Minhee Kim
- Ministry of Environment, 229 Misagangbyeonhangang-ro, Hanam-si, Gyeonggi-do, 12902, Republic of Korea.
| | - Choe Earn Choong
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul, 01897, Republic of Korea
| | - Seunghun Hyun
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 136-713, Republic of Korea.
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
| | - Gooyong Lee
- Green Technology Center, NamsanSquare Bldg., 173, Toegye-ro, Jung-gu, Seoul, 04554, Republic of Korea.
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29
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Choong CE, Wong KT, Jang SB, Nah IW, Choi J, Ibrahim S, Yoon Y, Jang M. Fluoride removal by palm shell waste based powdered activated carbon vs. functionalized carbon with magnesium silicate: Implications for their application in water treatment. CHEMOSPHERE 2020; 239:124765. [PMID: 31520981 DOI: 10.1016/j.chemosphere.2019.124765] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
In this study, palm shell activated carbon powder (PSAC) and magnesium silicate (MgSiO3) modified PSAC (MPSAC) were thoroughly investigated for fluoride (F-) adsorption. F- adsorption isotherms showed that PSAC and MPSAC over-performed some other reported F- adsorbents with adsorption capacities of 116 mg g-1 and 150 mg g-1, respectively. Interestingly, the MgSiO3 impregnated layer changed the adsorption behavior of F- from monolayer to heterogeneous multilayer based on the Langmuir and Freundlich isotherm models verified by chi-square test (X2). Thermodynamic parameters indicated that the F- adsorption on PSAC and MPSAC was spontaneous and exothermic. PSAC and MPSAC were characterized using FESEM-EDX, XRD, FTIR and XPS to investigate the F- adsorption mechanism. Based on the regeneration tests using NaOH (0.01 M), PSAC exhibited poor regeneration (<20%) while MPSAC had steady adsorption efficiencies (∼70%) even after 5 regeneration cycles. This is due to highly polarized C-F bond was found on PSAC while Mg-F bond was distinguished on MPSAC, evidently denoting that the F- adsorption is mainly resulted from the exchange of hydroxyl (-OH) group. It was concluded that PSAC would be a potential adsorbent for in-situ F- groundwater remediation due to its capability to retain F- without leaching out in a wide range pH. MPSAC would be an alternative adsorbent for ex-situ F- water remediation because it can easily regenerate with NaOH solution. With the excellent F- adsorption properties, both PSAC and MPSAC offer as promising adsorbents for F- remediation in the aqueous phase.
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Affiliation(s)
- Choe Earn Choong
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Kien Tiek Wong
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Seok Byum Jang
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - In Wook Nah
- Center for Energy Convergence, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul, 02792, Republic of Korea
| | - Jaeyoung Choi
- Green City Technology Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul, 02792, Republic of Korea
| | - Shaliza Ibrahim
- Institute of Ocean and Earth Sciences (IOES), University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea.
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30
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Ghosh A, Das G. Green synthesis of a novel water-stable Sn(ii)-TMA metal–organic framework (MOF): an efficient adsorbent for fluoride in aqueous medium in a wide pH range. NEW J CHEM 2020. [DOI: 10.1039/c9nj05861c] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An Sn(ii)-TMA MOF displaying positive zeta potential over a broad pH range (3–10) for selective fluoride adsorption from aqueous medium.
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Affiliation(s)
- Arnab Ghosh
- Centre for the Environment
- Indian Institute of Technology Guwahati
- India
| | - Gopal Das
- Centre for the Environment
- Indian Institute of Technology Guwahati
- India
- Department of Chemistry
- Indian Institute of Technology Guwahati
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31
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Makita Y, Sonoda A, Sugiura Y, Ogata A, Suh C, Lee JH, Ooi K. Preparation and phosphate adsorptive properties of metal oxide-loaded granular activated carbon and pumice stone. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123881] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Zhang Y, Qian Y, Li W, Gao X, Pan B. Fluoride uptake by three lanthanum based nanomaterials: Behavior and mechanism dependent upon lanthanum species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 683:609-616. [PMID: 31146065 DOI: 10.1016/j.scitotenv.2019.05.185] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 04/29/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
Excess fluoride in water can be efficiently removed by lanthanum based material, however, different lanthanum species exhibited distinct fluoride removal capability. In this study, three typical lanthanum based nanoparticles denoted as L1, L2 and L3 in the form of La(OH)3, La2O3·nH2O and LaCO3OH respectively were synthesized and well characterized for fluoride removal. They differ in terms of morphology, surface charge, water content, specific surface area and crystallinity. L2 (La2O3·nH2O) exhibited the highest adsorption capacity (~28.9 mg/g) and selectivity towards fluoride, followed by L3 (LaCO3OH) (~25.1 mg/g) and L1 (La(OH)3) (~6.03 mg/g). Despite the relatively low capacity for L1, it could be efficiently regenerated by alkaline solution for repeated use. However, both L2 and L3 suffered significant from capacity loss after regeneration. X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance spectroscopy (NMR) analysis and molecular configuration modelling suggested the distinct mechanism of fluoride adsorption onto the three materials. Fluoride was captured by L1 and L3 via electrostatic attraction and ligand exchange of different bond strength. However, a stronger LaF interaction via chemical adsorption by L2 was observed. This study provided new insights into the role of commonly used La species for fluoride removal.
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Affiliation(s)
- Yanyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China.
| | - Yue Qian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wei Li
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China; Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
| | - Xiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
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33
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Parashar K, Pillay K, Das R, Maity A. Fluoride Toxicity and Recent Advances in Water Defluoridation with Specific Emphasis on Nanotechnology. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-04474-9_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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34
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Mullick A, Neogi S. Ultrasound assisted synthesis of Mg-Mn-Zr impregnated activated carbon for effective fluoride adsorption from water. ULTRASONICS SONOCHEMISTRY 2019; 50:126-137. [PMID: 30245202 DOI: 10.1016/j.ultsonch.2018.09.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 09/02/2018] [Accepted: 09/04/2018] [Indexed: 06/08/2023]
Abstract
High fluoride content in the natural water sources is a serious matter of concern and adsorption is recommended as one of the most convenient, affordable and widely applied defluorination technologies. In this study, a novel composite was synthesized by impregnating magnesium (Mg), manganese (Mn) and zirconium (Zr) on powdered activated carbon (AC) for effective fluoride adsorption and the synthesis was made using sonochemical method. The characterization of the prepared adsorbent AC-Mg-Mn-Zr along with individual metal composites AC-Zr, AC-Mg and AC-Mn were done by SEM, EDX, FTIR, XRD and BET analysis to understand the major functional bonds, and changes in surface chemistry after adsorption. The mechanism of the process was discussed through major reactions involved for individual metals. Due to high point of zero charge (pHPZC = 11.9), the adsorbent was able to remove more than 96% of fluoride consistently with only 1 g/L of optimum adsorbent dosage for a wide pH range (2 to 10). The maximum adsorption capacity obtained was 26.27 mg/g within an equilibrium time of 3 h. More than 96% energy saving was achieved in the sonochemical synthesis route compared to conventional precipitation method of synthesis.
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Affiliation(s)
- Aditi Mullick
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
| | - Sudarsan Neogi
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
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36
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Hydrous CeO2-Fe3O4 decorated polyaniline fibers nanocomposite for effective defluoridation of drinking water. J Colloid Interface Sci 2018; 532:500-516. [DOI: 10.1016/j.jcis.2018.07.134] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 11/20/2022]
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37
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Choong CE, Kim M, Yoon S, Lee G, Park CM. Mesoporous La/Mg/Si-incorporated palm shell activated carbon for the highly efficient removal of aluminum and fluoride from water. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.07.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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38
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Chigondo M, Paumo HK, Bhaumik M, Pillay K, Maity A. Rapid high adsorption performance of hydrous cerium-magnesium oxides for removal of fluoride from water. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.06.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Wang J, Chen N, Feng C, Li M. Performance and mechanism of fluoride adsorption from groundwater by lanthanum-modified pomelo peel biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:15326-15335. [PMID: 29560595 DOI: 10.1007/s11356-018-1727-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
To obtain an economical and effective adsorbent for fluoride removal, lanthanum-loaded pomelo peel biochar (PPBC-La) was synthesized using a facile approach. The batch adsorption experiments were investigated to determine adsorbent performance. The PPBC-La and its pristine biochar (PPBC) were characterized by scanning electronic microscopy (SEM), zeta potential, Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) methods. Experimental results showed that the adsorption data were described well by the pseudo-second-order kinetic and Freundlich isotherm models. The maximum fluoride adsorption capacity for PPBC-La was found to be 19.86 mg/g at 25 °C and pH 6.5. The PPBC-La worked well at pH 2.4-9.6 and carried positive charge at pH < 5.8. The presence of SO42-, Cl-, and NO3- had a slight effect on fluoride uptake except HCO3- and PO43-. The real groundwater study testified that 9.8 mg/L of fluoride was removed effectively at 1.0 g/L of dosage and pH 5.2. The regeneration results revealed that the PPBC-La had a good reusability. According to FTIR, XPS analysis and the anion exchange experiment, anions (NO3- and OH-) exchange with fluoride ions was mainly responsible for fluoride adsorption.
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Affiliation(s)
- Jianguo Wang
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Nan Chen
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China.
- Key Laboratory of Groundwater Cycle and Environment Evolution (China University of Geosciences (Beijing)), Ministry of Education, Beijing, 100083, China.
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
- Key Laboratory of Groundwater Cycle and Environment Evolution (China University of Geosciences (Beijing)), Ministry of Education, Beijing, 100083, China
| | - Miao Li
- School of Environment, Tsinghua University, Beijing, 100084, China
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40
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Wu K, Chen Y, Ouyang Y, Lei H, Liu T. Adsorptive removal of fluoride from water by granular zirconium-aluminum hybrid adsorbent: performance and mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:15390-15403. [PMID: 29564704 DOI: 10.1007/s11356-018-1711-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 03/07/2018] [Indexed: 06/08/2023]
Abstract
Granular zirconium-aluminum hybrid adsorbent (GZAHA) was fabricated for efficient defluoridation of groundwater in filter application. GZAHA was formed through the aggregation of massive Zr/Al oxide nanoparticles with an amorphous pattern. This adsorbent has a satisfactory mechanical strength, a specific surface area of 29.55 m2/g, and numerous hydroxyl groups on the surface. F adsorption equilibrium could be achieved within 12 h, and the sorption process followed a pseudo-second-order reaction rate. The maximum adsorption capacity of F estimated from the Langmuir model was 65.07 mg/g at 25 °C, being greater than most of other granular adsorbents. The removal efficiency of F could be maintained in a wide pH range of 5~9. The presence of phosphate posed an adverse effect on F adsorption due to the competition mechanisms. The saturated adsorbents could be regenerated and reused for four times by using sodium hydroxide solution as an eluent, and the adsorption capacity remained around 80%. Besides electrostatic attraction and Al-F complex, surface complexation and anion exchange were also involved in the adsorption process. Continuous adsorption experiments illustrated that 808 bed volumes of F-contaminated water (F = 5 mg/L) were treated successfully by a GZAHA-packed column without second pollution.
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Affiliation(s)
- Kun Wu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, Shaanxi, 710055, China.
| | - Yuanyuan Chen
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, Shaanxi, 710055, China
| | - Yongqiang Ouyang
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hang Lei
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ting Liu
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
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41
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Water defluoridation with avocado-based adsorbents: Synthesis, physicochemical characterization and thermodynamic studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.084] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Yadav KK, Gupta N, Kumar V, Khan SA, Kumar A. A review of emerging adsorbents and current demand for defluoridation of water: Bright future in water sustainability. ENVIRONMENT INTERNATIONAL 2018; 111:80-108. [PMID: 29190529 DOI: 10.1016/j.envint.2017.11.014] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 11/17/2017] [Accepted: 11/18/2017] [Indexed: 06/07/2023]
Abstract
Fluoride contamination of groundwater is a serious problem in several countries of the world because of the intake of excessive fluoride caused by the drinking of the contaminated groundwater. Geological and anthropogenic factors are responsible for the contamination of groundwater with fluoride. Excess amounts of fluoride in potable water may cause irreversible demineralisation of bone and tooth tissues, a condition called fluorosis, and long-term damage to the brain, liver, thyroid, and kidney. There has long been a need for fluoride removal from potable water to make it safe for human use. From among several defluoridation technologies, adsorption is the technology most commonly used due to its cost-effectiveness, ease of operation, and simple physical process. In this paper, the adsorption capacities and fluoride removal efficiencies of different types of adsorbents are compiled from relevant published data available in the literature and represented graphically. The most promising adsorbents tested so far from each category of adsorbents are also highlighted. There is still a need to discover the actual feasibility of usage of adsorbents in the field on a commercial scale and to define the reusability of adsorbents to reduce cost and the waste produced from the adsorption process. The present paper reviews the currently available methods and emerging approaches for defluoridation of water.
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Affiliation(s)
- Krishna Kumar Yadav
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India.
| | - Neha Gupta
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India.
| | - Vinit Kumar
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India
| | - Shakeel Ahmad Khan
- Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi 110012, India
| | - Amit Kumar
- Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi 110012, India
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43
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Kumar V, Rehani V, Kaith BS, Saruchi S. Synthesis of a biodegradable interpenetrating polymer network of Av-cl-poly(AA-ipn-AAm) for malachite green dye removal: kinetics and thermodynamic studies. RSC Adv 2018; 8:41920-41937. [PMID: 35558783 PMCID: PMC9092014 DOI: 10.1039/c8ra07759b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/29/2018] [Indexed: 11/30/2022] Open
Abstract
This paper deals with the synthesis of a biodegradable interpenetrating polymer network (IPN) from the natural polysaccharide aloe vera (Av), acrylamide (AAm) and acrylic acid (AA), and its evaluation as a dye removal device. In the synthesis of Av-cl-poly(AA-ipn-AAm), ammonium persulfate (APS) was used as an initiator, N,N′-methylene bisacrylamide (MBA) as a cross-linker, AA and AAm as primary and secondary monomers, respectively. Soil burial and composting methods were used to study the biodegradability of the synthesized IPN and the results showed 94% degradation within 70 days using the composting method and 86% degradation within 77 days using the soil burial method. Biodegradation was confirmed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) techniques. The synthesized IPN was used as a device for the removal of malachite green (MG) dye from aqueous solution. The maximum MG removal capacity of the synthesized IPN was found to be 97.3% under the optimal conditions (i.e. time = 180 min., pH = 4.5, adsorbent dose = 5 g L−1). The adsorption kinetics of malachite green molecules onto synthesized IPN was studied and compared using pseudo-first-order and pseudo-second-order models and we found that the adsorption process is better represented by the pseudo-second-order model. The different adsorption isotherm models like Langmuir, Freundlich, Dubinin–Radushkevich, Temkin, Redlich–Peterson and Sips isotherms were studied. The best-fitting isotherm model for the present experiment is the Langmuir model. This paper deals with the synthesis of a biodegradable interpenetrating polymer network (IPN) from the natural polysaccharide aloe vera (Av), acrylamide (AAm) and acrylic acid (AA), and its evaluation as a dye removal device.![]()
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Affiliation(s)
- Vaneet Kumar
- Department of Chemistry
- CT Group of Institutions Jalandhar
- India
| | - Vishal Rehani
- Department of Chemistry
- I. K. Gujral, Punjab Technical University
- Jalandhar
- India
| | - Balbir Singh Kaith
- Department of Chemistry
- Dr B R Ambedkar National Institute of Technology
- Jalandhar
- India
| | - Saruchi Saruchi
- Department of Biotechnology
- CT Group of Institutions
- Jalandhar
- India
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44
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Elanchezhiyan SSD, Meenakshi S. Facile Fabrication of Metal Ions-Incorporated Chitosan/β-Cyclodextrin Composites for Effective Removal of Oil from Oily Wastewater. ChemistrySelect 2017. [DOI: 10.1002/slct.201702147] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Sankaran Meenakshi
- Department of Chemistry; The Gandhigram Rural Institute-Deemed University, Gandhigram-; 624 302 Tamil Nadu IndiaTel: +91 94 438 38121
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45
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Remediation of fluoride from drinking water using magnetic iron oxide coated hydrotalcite/chitosan composite. Int J Biol Macromol 2017; 104:1569-1577. [DOI: 10.1016/j.ijbiomac.2017.02.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/26/2017] [Accepted: 02/09/2017] [Indexed: 11/21/2022]
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46
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Gold recovery from very dilute solutions from a mine in closing process: Adsorption-desorption onto carbon materials. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Li L, Zhu Q, Man K, Xing Z. Fluoride removal from liquid phase by Fe-Al-La trimetal hydroxides adsorbent prepared by iron and aluminum leaching from red mud. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.04.097] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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Performance of fluoride electrosorption using micropore-dominant activated carbon as an electrode. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.08.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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49
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Wang L, Xie Y, Yang J, Zhu X, Hu Q, Li X, Liu Z. Insight into mechanisms of fluoride removal from contaminated groundwater using lanthanum-modified bone waste. RSC Adv 2017. [DOI: 10.1039/c7ra10713g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The current worldwide issue of fluoride contamination in groundwater has resulted in an increased demand for efficient adsorbents.
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Affiliation(s)
- Lanting Wang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
- College of Environment
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Yanhua Xie
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
- College of Environment
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Jinglong Yang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
- College of Environment
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Xueqian Zhu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
- College of Environment
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Qili Hu
- Graduate School of Life and Environmental Sciences
- University of Tsukuba
- Tsukuba
- Japan
| | - Xiaoyun Li
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
- College of Environment
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Zhuang Liu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
- College of Environment
- Chengdu University of Technology
- Chengdu 610059
- China
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Gabor A, Davidescu CM, Negrea A, Ciopec M, Muntean C, Duteanu N, Negrea P. Sorption properties of Amberlite XAD 7 functionalized with sodium β-glycerophosphate. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This paper presents the sorption properties of a new adsorbent material prepared by impregnating Amberlite XAD 7 polymer with sodium β-glycerophosphate. For impregnation, the pellicular vacuum solvent vaporization method was employed. The functionalization was evidenced by energy dispersive X-ray analysis. The usefulness of this material and its performances were studied for the adsorption of the rare earth element La(III) in batch experiments. The influence of various parameters affecting the adsorption of lanthanum like contact time, initial concentration, pH value, and temperature was studied. The kinetic of the adsorption process was best described by the pseudo-second-order model. Sips isotherm was found to be the best fit of the equilibrium data. The maximum adsorption capacity of the functionalized material was of 33.8 mg La(III)/g. The values of thermodynamic parameters (ΔGo, ΔHo, ΔSo) showed that the adsorption process was endothermic and spontaneous. The results proved that Amberlite XAD 7 functionalized with sodium β-glycerophosphate is an efficient adsorbent for the removal of La(III) ions from aqueous solutions. Quantum chemistry was performed using Spartan software.
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