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Zeng Z, Li Q, Yan J, Huang L, Arulmani SRB, Zhang H, Xie S, Sio W. The model and mechanism of adsorptive technologies for wastewater containing fluoride: A review. CHEMOSPHERE 2023; 340:139808. [PMID: 37591373 DOI: 10.1016/j.chemosphere.2023.139808] [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: 07/04/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 08/19/2023]
Abstract
With the continuous development of society, industrialization, and human activities have been producing more and more pollutants. Fluoride discharge is one of the main causes of water pollution. This review summarizes various commonly used and effective fluoride removal technologies, including ion exchange technology, electrochemical technology, coagulation technology, membrane treatment, and adsorption technology, and points out the outstanding advantages of adsorption technology. Various commonly used fluoride removal techniques as well as typical adsorbent materials have been discussed in published papers, however, the relationship between different adsorbent materials and adsorption models has rarely been explored, therefore, this paper categorizes and summarizes the various models involved in static adsorption, dynamic adsorption, and electrosorption fluoride removal processes, such as pseudo-first-order and pseudo-second-order kinetic models, Langmuir and Freundlich isotherm models, Thomas and Clark dynamic adsorption models, including the mathematical equations of the corresponding models and the significance of the models are also comprehensively summarized. Furthermore, this comprehensive discussion delves into the fundamental adsorption mechanisms, quantification of maximum adsorption capacity, evaluation of resistance to anion interference, and assessment of adsorption regeneration performance exhibited by diverse adsorption materials. The selection of the best adsorption model not only predicts the adsorption performance of the adsorbent but also provides a better description and understanding of the details of each part of the adsorption process, which facilitates the adjustment of experimental conditions to optimize the adsorption process. This review may provide some guidance for the development of more cost-effective adsorbent materials and adsorption processes in the future.
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Affiliation(s)
- Zhen Zeng
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Qian Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Jia Yan
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Samuel Raj Babu Arulmani
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, 35000, Rennes, France
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, 510006, China.
| | - Shaojian Xie
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Wenghong Sio
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, China
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2
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Liu D, Li Y, Liu C, Li B. Porous Lanthanum-Zirconium phosphate with superior adsorption capability of fluorine for water treatment. J Colloid Interface Sci 2023; 636:588-601. [PMID: 36669452 DOI: 10.1016/j.jcis.2023.01.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/21/2022] [Accepted: 01/12/2023] [Indexed: 01/15/2023]
Abstract
Bimetal oxide is a popular defluorinating material. Hexadecyl trimethyl ammonium bromide (CTAB) as a surfactant successfully synthesizes a novel lanthanum-zirconium phosphate to remove fluorine from groundwater. Lanthanum-zirconium phosphate at a Zr/La molar ratio of 2 exhibited a specific surface area of 455.14 m2/g with a wide pore size, which was achieved by incorporating lanthanum into materials and removing CTAB through calcination. The maximum fluoride adsorption capacity is 109.17 mg/g, which is tenfold that of mesostructured zirconium phosphate. Specifically, analysis revealed that mZrP and LamZrP2-1 were amorphous, which is consistent with HAADF-STEM. The fluoride adsorption fitted well with the pseudo-second-order equation model and Langmuir isotherm mode. LamZrP2-1 had potent anti-interference ability without PO43-. Moreover, LamZrP2-1 was reusable for at least six cycles of adsorption-desorption with little influence. The adsorption mechanism of fluoride was discussed by X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance spectroscopy (NMR) analysis, and Fourier transform infrared (FTIR) spectroscopy. Fluoride was captured by LamZrP2-1 via charge attraction, ligand exchange of different bond strengths, and ion exchange. Lanthanum-zirconium phosphate is important not only in the research and development of bimetal oxides but also in the treatment of groundwater for fluoride removal.
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Affiliation(s)
- Dongxue Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, PR China
| | - Ye Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, PR China.
| | - Chang Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, PR China
| | - Bolin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, PR China
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3
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Gasparotto JM, Pinto D, de Paula N, Maraschin M, Franco DSP, Carissimi E, Foletto EL, Jahn SL, Silva LFO, Dotto GL. Preparation of alumina-supported Fe-Al-La composite for fluoride removal from an aqueous matrix. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:42416-42426. [PMID: 36646979 DOI: 10.1007/s11356-023-25231-1] [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: 10/12/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Using groundwater for human consumption is an alternative for places with no nearby surface water resources. Fluoride is commonly found in groundwater, and the consumption of this water for a prolonged time in concentrations that exceed established limits by WHO and Brazilian legislation on water potability (1.5 mg L-1) can cause harmful problems to human health. For this reason, fluoride removal is an important step before water consumption. In this work, activated alumina was impregnated with Fe-Al-La composite and employed for the first time as an adsorbent for fluoride removal from an aqueous environment. XRD, SEM/EDS, FT-IR, and point of zero charge were used to characterize the prepared adsorbent. The adsorptive performance of adsorbent material was investigated by employing a 23-central composite design (CCD), and the obtained experimental conditions were pH = 6.5 and adsorbent dosage = 3.0 g L-1. A maximum adsorption capacity of 8.17 mg g-1 at 298 K and pH = 6.5 was achieved by Langmuir isotherm to describe the adsorption. The kinetic model that better described experimental data was Avrami, with the kav parameter increasing with the initial concentration from 0.076 to 0.231 (min-1)nav. The nature of adsorption was found to be homogeneous, and it occurs in a monolayer. The fluoride removal performance for the prepared adsorbent was higher than granular activated alumina, showing that supporting Fe-Al-La at the alumina surface increased its fluoride adsorption capacity from 16 to 42% at the same experimental conditions. Finally, the influence of co-existing ions Cl-, SO42-, and NO3- was evaluated in fluoride adsorption, and the material presented great selectivity to fluoride. Thus, Fe-Al-La/AA adsorbent is a promising material for fluoride removal from water.
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Affiliation(s)
- Juliana M Gasparotto
- Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Diana Pinto
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Natalie de Paula
- Univerdidad de La Costa, CUC, Calle 58 # 55-56, 080002, Barranquilla, Atlántico, Colombia
| | - Manoel Maraschin
- Univerdidad de La Costa, CUC, Calle 58 # 55-56, 080002, Barranquilla, Atlántico, Colombia
| | - Dison S P Franco
- Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Elvis Carissimi
- Univerdidad de La Costa, CUC, Calle 58 # 55-56, 080002, Barranquilla, Atlántico, Colombia
| | - Edson L Foletto
- Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Sergio L Jahn
- Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Luis F O Silva
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Guilherme L Dotto
- Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil.
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Zhou M, Yang H, Wang Z, Ren J, Wang R, He Y. Construction of HAnW-based nanotwigs for removing inorganic fluorion in wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32641-32654. [PMID: 36469270 DOI: 10.1007/s11356-022-24436-0] [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: 08/19/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
The environmental pollution with fluoride compounds was currently being paid more and more attention as it threatens the safety of animal and human life in an ecosystem. In this study, an eco-friendly adsorbing material for removing fluoride ion (F-) was prepared by hydroxyapatite nanowires (HAnWs), a typical biocompatible inorganic conjugates. UiO66, a typical zirconium-based metal-organic framework (MOF), was conjugated onto HAnW by a simple in situ hydrothermal reaction, which afforded a novel HAnW-based nanotwigs of conjugates like millet (UiO66@HAnWs). Being characterized by SEM, EDS, FT-IR, XRD, XPS, and TGA, the obtained UiO66@HAnWs were applied to removing F- in wastewater, and its adsorption capacity was optimized. It was found that UiO66@HAnWs had a bigger specific surface area (115.310 m2/g), and its efficiency for removing F- got to 99.3%, which was greatly improved than that of related materials. It was considered that the adsorption of F- on UiO66@HAnWs was mainly multi-molecular layer adsorption, which fluoride ions aggregate on the Zr(IV) active sites to attain ligand switching, and the nanoconjugated structure like nanotwigs of millet greatly improved its adsorption capacity. In summary, a novel eco-friendly UiO66@HAnWs with nanoconjugated structure could be constructed by simple hydrothermal method, which the agglomeration defects of MOFs were not only ameliorated, but also its adsorption capacity was greatly improved.
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Affiliation(s)
- Meiling Zhou
- Key Lab, Eco-Functional Polymer Materials of MOE, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Hua Yang
- Key Lab, Eco-Functional Polymer Materials of MOE, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Zejun Wang
- Key Lab, Eco-Functional Polymer Materials of MOE, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Jiarui Ren
- Key Lab, Eco-Functional Polymer Materials of MOE, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Rongmin Wang
- Insti tute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Yufeng He
- Key Lab, Eco-Functional Polymer Materials of MOE, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Shanika Fernando M, Wimalasiri AKDVK, Dziemidowicz K, Williams GR, Rasika Koswattage K, Dissanayake DP, Nalin De Silva KM, De Silva RM. The blending effect of natural polysaccharides with nano-zirconia towards the removal of fluoride and arsenate from water. ROYAL SOCIETY OPEN SCIENCE 2023; 10:221514. [PMID: 36908995 PMCID: PMC9993049 DOI: 10.1098/rsos.221514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Nano-zirconia (ZO) was synthesized using a microwave-assisted one-pot precipitation route. Two biopolymers, chitosan (CTS) and carboxymethyl cellulose were blended with ZO at different w/w ratios. The formulation with 30% w/w chitosan (ZO-CTS) was found to give enhanced uptake of F- and As(V). ZO and the most effective ZO-CTS system were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. These confirmed the formation of a composite system containing nanoparticles of 50 nm in size, in which ZO was present in the amorphous form. It was observed that the combination of ZO with CTS improved the F- and As(V) adsorption capacity most notably at pH 5.5. Fluoride adsorption by ZO-CTS followed the Freundlich isotherm model, with an adsorption capacity of 120 mg g-1. Adsorption of As(V) by ZO-CTS could be fitted with both the Langmuir and Freundlich isotherm models and was found to have a capacity of 14.8 mg g-1. Gravity filtration studies conducted for groundwater levels indicated the effectiveness of ZO-CTS in adsorbing As(V) and F- at a pH of 5.5. The ability of the ZO-CTS in removing Cd(II) and Pb(II) was also investigated, and no such enhancement was observed, and found the neat ZO was the most potent sorbent here.
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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
| | - A. K. D. V. K. Wimalasiri
- 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 WCIN 1AX, UK
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29–39 Brunswick Square, London WCIN 1AX, UK
| | | | - 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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Rahim AMA, Mahmoud EMM. Recent development of eco-friendly nanocomposite carbon paste electrode for voltammetric determination of Cd(II) in real samples. ANAL SCI 2023; 39:179-190. [PMID: 36402886 PMCID: PMC10082124 DOI: 10.1007/s44211-022-00214-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 11/02/2022] [Indexed: 11/21/2022]
Abstract
Using eco-friendly, cheap, and available adsorbents is promising for the determination of metal ions. So, this study focuses on the modification of graphite reinforcement carbon paste electrode (GRCPE) with mango seed kernel (MSK) for voltammetric determination of Cd(II). Moreover, to increase the surface area of this adsorbent, it was prepared in nanosized that formed nanoparticles of mango seed kernel (MSK-NPs). The developed nanocomposite electrode of carbon paste electrode modified with nanoparticles of mango seed kernel (MSK-NPs@GRCPE) was characterized using Fourier transform infrared (FTIR) and Scanning electron microscopy (SEM). The effect of pH, buffer solution, and supporting electrolyte as experimental conditions were optimized through differential pulse adsorptive anodic stripping voltammetric method (DPAdASV). Britton-Robinson buffer pH = 3.9 at Eacc = - 1400 mV, tacc = 30 s, pulse width = 10 ms and sampling time = 8 ms were the optimum conditions for determination of Cd(II). The LOD and LOQ of MSK-NPs@GRCPE were calculated at 5.44 × 10-9 and 1.65 × 10-8 M, respectively. Compared with bare graphite reinforcement carbon paste electrode (BGRCPE), the nanocomposite MSK-NPs@GRCPE has a lower detection limit, indicating that the presence of MSK-NPs could greatly improve the response to Cd(II). The practical applicability of the electrode was verified by the determination of Cd(II) in chocolate and white rice samples. The results show high selectivity and sensitivity for Cd(II) in real samples.
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Affiliation(s)
- Asmaa M Abdel Rahim
- Chemistry Department, Faculty of Science, Minia University, Minia, 61511, Egypt.
| | - Esraa M M Mahmoud
- Chemistry Department, Faculty of Science, Minia University, Minia, 61511, Egypt
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7
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Effective removal of fluorine ions in phosphoric acid by silicate molecular sieve synthesized by hexafluorosilicic acid. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Yapo NS, Aw S, Briton BGH, Drogui P, Yao KB, Adouby K. Removal of fluoride in groundwater by adsorption using hydroxyapatite modified Corbula trigona shell powder. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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9
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Kumar R, Sharma P, Yang W, Sillanpää M, Shang J, Bhattacharya P, Vithanage M, Maity JP. State-of-the-art of research progress on adsorptive removal of fluoride-contaminated water using biochar-based materials: Practical feasibility through reusability and column transport studies. ENVIRONMENTAL RESEARCH 2022; 214:114043. [PMID: 36029838 DOI: 10.1016/j.envres.2022.114043] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 07/15/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Fluoride (F-) is one of the essential elements found in soil and water released from geogenic sources and several anthropogenic activities. Fluoride causes fluorosis, dental and skeletal growth problems, teeth mottling, and neurological damage due to prolonged consumption, affecting millions worldwide. Adsorption is an extensively implemented technique in water and wastewater treatment for fluoride, with significant potential due to efficiency, cost-effectiveness, ease of operation, and reusability. This review highlights the current state of knowledge for fluoride adsorption using biochar-based materials and the limitations of biochar for fluoride-contaminated groundwater and industrial wastewater treatment. Biochar materials have shown significant adsorption capacities for fluoride under the influence of low pH, biochar dose, initial concentration, temperature, and co-existing ions. Modified biochar possesses various functional groups (-OH, -CC, -C-O, -CONH, -C-OH, X-OH), in which enhanced hydroxyl (-OH) groups onto the surface plays a significant role in fluoride adsorption via electrostatic attraction and ion exchange. Regeneration and reusability of biochar sorbents need to be performed to a greater extent to improve removal efficiency and reusability in field conditions. Furthermore, the present investigation identifies the limitations of biochar materials in treating fluoride-contaminated drinking groundwater and industrial effluents. The fluoride removal using biochar-based materials at an industrial scale for understanding the practical feasibility is yet to be documented. This review work recommend the feasibility of biochar-based materials in column studies for fluoride remediation in the future.
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Affiliation(s)
- Rakesh Kumar
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803116, India
| | - Prabhakar Sharma
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803116, India.
| | - Wen Yang
- Agronomy College, Shenyang Agricultural University, Shenyang, China
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa; Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
| | - Jianying Shang
- Department of Soil and Water Science, China Agricultural University, Beijing, 100083, China
| | - Prosun Bhattacharya
- Department of Sustainable Development, Environmental Sciences and Engineering, KTH Royal Institute of Technology, Teknikringen, 10B SE-100 44, Stockholm, Sweden
| | - Meththika Vithanage
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Jyoti Prakash Maity
- Department of Chemistry, School of Applied Sciences, KIIT Deemed to Be University, Bhubaneswar, Odisha, 751024, India
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Synthesis of stable flowerlike MgAl-LDH@MIL-88A and its adsorption performance for fluoride. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221106680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
MgAl-LDH@MIL-88A as an effective adsorbent was successfully prepared by a simple stirring method in water bath through loading MIL-88A onto the surface of flowerlike MgAl-LDH, which was synthesized via solvothermal method. Interestingly, the results of characterizations showed that the MIL-88A could still grow, but extrude the brucite-like layers of MgAl-LDH. The influences of initial solution pH, contact time, temperature, and co-existing ions on the adsorption performance of MgAl-LDH@MIL-88A were studied systematically by batch static adsorption experiments. It was found that MgAl-LDH@MIL-88A represented the highest adsorption loading of fluoride (14.00 mg g−1) at initial pH 7.0 in 420 min. The uptake process was described appropriately by the pseudo-second-order, the Temkin and the Freundlich isotherm models. The thermodynamic parameters confirmed the endothermic and spontaneous nature of adsorption. MgAl-LDH@MIL-88A was the green adsorbent as the residual mental contents ([Mg2+] = 1.095 mg L−1, [Fe3+] = 0.007 mg L−1, [Al3+] = 0.076 mg L−1) after adsorption met the Chinese sanitary standard for drinking water (GB 5749-2006). The mechanism of fluoride removal by MgAl-LDH@MIL-88A involved the electrostatic interactions between Fe3+ of MIL-88A and fluoride, and ligand exchange among hydroxyl groups of MgAl-LDH, carboxylate groups of the C4H4O4 and fluoride.
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Olejarczyk M, Rykowska I, Urbaniak W. Management of Solid Waste Containing Fluoride-A Review. MATERIALS 2022; 15:ma15103461. [PMID: 35629486 PMCID: PMC9147173 DOI: 10.3390/ma15103461] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/22/2022] [Accepted: 05/09/2022] [Indexed: 02/01/2023]
Abstract
Technological and economic development have influenced the amount of post-production waste. Post-industrial waste, generated in the most considerable amount, includes, among others, waste related to the mining, metallurgical, and energy industries. Various non-hazardous or hazardous wastes can be used to produce new construction materials after the “solidification/stabilization” processes. They can be used as admixtures or raw materials. However, the production of construction materials from various non-hazardous or hazardous waste materials is still very limited. In our opinion, special attention should be paid to waste containing fluoride, and the reuse of solid waste containing fluoride is a high priority today. Fluoride is one of the few trace elements that has received much attention due to its harmful effects on the environment and human and animal health. In addition to natural sources, industry, which discharges wastewater containing F− ions into surface waters, also increases fluoride concentration in waters and pollutes the environment. Therefore, developing effective and robust technologies to remove fluoride excess from the aquatic environment is becoming extremely important. This review aims to cover a wide variety of procedures that have been used to remove fluoride from drinking water and industrial wastewater. In addition, the ability to absorb fluoride, among others, by industrial by-products, agricultural waste, and biomass materials were reviewed.
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Affiliation(s)
- Małgorzata Olejarczyk
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (M.O.); (I.R.)
- Construction Company “Waciński” Witold Waciński, ul. Długa 15, 83-307 Kiełpino, Poland
| | - Iwona Rykowska
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (M.O.); (I.R.)
| | - Włodzimierz Urbaniak
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (M.O.); (I.R.)
- Correspondence:
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12
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ZrMOX Particles for Enhanced Removal of Methyl Orange from Wastewater: Preparation, Characterization, and Adsorption Study. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/9685352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The wide application of organic dyes in many industries has brought challenges to the effective treatment of organic wastewater. In this study, a series of ZrMOX (M: Fe, Co, Ni, Cu) particles were prepared by the coprecipitation method to adsorb methyl orange (MO) in aqueous solution. The adsorbents were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and N2 adsorption-desorption. The selected adsorbent with the best adsorption performance was ZrFeOX with a molar ratio of 1 : 1 and calcination temperature of 573 K; the maximum adsorption capacity was 138.95 mg·g-1. The adsorption behavior of MO onto the adsorbent was studied as a function of contact time, initial concentrations, adsorption temperature, and pH conditions. The analysis results showed that pseudo-second-order, Elovich, and Langmuir models were suitable to describe the adsorption behavior of MO on the adsorbent. In addition, regeneration experiments presented that the MO removal rate reached over 96% after repeated recycling for 5 times. The adsorbent developed in this work is not only simple to prepare and low cost but also green and energy-saving, which can make some contributions to environmental governance.
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13
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Liu D, Li Y, Liu C, Zhou Y. Facile preparation of UiO-66@PPy nanostructures for rapid and efficient adsorption of fluoride: Adsorption characteristics and mechanisms. CHEMOSPHERE 2022; 289:133164. [PMID: 34875289 DOI: 10.1016/j.chemosphere.2021.133164] [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: 09/12/2021] [Revised: 11/18/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
A nanocomposite of a zirconium-based metal-organic framework (UiO-66) @ polypyrrole (PPy) (UiO-66@PPy) was successfully synthesized to eliminate F- from groundwater. The optimum initial pH and adsorbent dose for maximum uptake of F- from aqueous solution were found to be 3.0 and 0.1 g/L, respectively. The fluoride removal performance of UiO-66 was greatly enhanced through the introduction of polypyrrole guests, and the maximum adsorption capacity of UiO-66@PPy, namely, 290.7 mg/g, was reached, which is far superior to those of other previously reported adsorbents. The fluoride adsorption by UiO-66@PPy agreed well with the pseudo-second-order equation model and Langmuir isotherm model. The coexisting PO43- and CO32- substantially influence fluoride removal. The synthesized UiO-66@PPy could be reused five times in adsorption-desorption cycles. The incorporation of conducting polymers opened additional paths for the development of adsorbent materials; thus, UiO-66@PPy could be a viable adsorbent material and contribute to fluoride removal from groundwater.
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Affiliation(s)
- Dongxue Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, PR China
| | - Ye Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, PR China.
| | - Chang Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, PR China
| | - Yuzhi Zhou
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, PR China
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14
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Zou SW, Koh KY, Chen Z, Wang YY, Chen JP, Zheng YM. Adsorption of organic and inorganic arsenic from aqueous solution: Optimization, characterization and performance of Fe-Mn-Zr ternary magnetic sorbent. CHEMOSPHERE 2022; 288:132634. [PMID: 34699882 DOI: 10.1016/j.chemosphere.2021.132634] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 10/09/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
Arsenic is a highly toxic pollutant and exists in inorganic and organic forms in groundwater and industrial wastewater. It is of great importance to reduce the arsenic content to lower levels in the water (e.g., <10 ppb for drinking) in order to minimize risk to humans. In this study, a Fe-Mn-Zr ternary magnetic sorbent was fabricated via precipitation for removal of inorganic and organic arsenate. The synthesis of sorbent was optimized by Taguchi method, which leads to an adsorbent with higher adsorption capacity. The adsorption of As(V) was pH dependent; the optimal removal was achieved at pH 2 and 5 for inorganic and organic As(V), respectively. Contact time of 25 h was sufficient for complete adsorption of both inorganic and organic As(V). The adsorption isotherm study revealed that the adsorbent performed better in sequestration of inorganic As(V) than that of organic As(V); both adsorption followed the Langmuir isotherm with maximum adsorption capacities of 81.3 and 16.98 mg g-1 for inorganic and organic As(V), respectively. The existence of anions in the water had more profound effect on the adsorption of organic As(V) than the inorganic As(V). The co-existing silicate and phosphate ions caused significantly negative impacts on the adsorption of both As(V). Furthermore, the existence of humic acid caused the deterioration of inorganic As(V) removal but showed insignificant impact on the organic As(V) adsorption. The mechanism study demonstrated that ion exchange and complexation played key roles in arsenic removal. This study provides a promising magnetic adsorptive material for simultaneous removal of inorganic and organic As(V).
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Affiliation(s)
- Shuai-Wen Zou
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; Shanghai Emperor of Cleaning Hi-tech Limited Company, 1230 North Zhongshan Road, Shanghai, 200437, China
| | - Kok Yuen Koh
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore
| | - Zhihao Chen
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore
| | - Yu-Yang Wang
- Shanghai Emperor of Cleaning Hi-tech Limited Company, 1230 North Zhongshan Road, Shanghai, 200437, China
| | - J Paul Chen
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore; NUS Graduate School - Integrative Sciences and Engineering Programme, National University of Singapore, Singapore 21 Lower Kent Ridge Road, Singapore, 119077, Singapore.
| | - Yu-Ming Zheng
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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15
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Jian S, Cheng Y, Ma X, Guo H, Hu J, Zhang K, Jiang S, Yang W, Duan G. Excellent fluoride removal performance by electrospun La–Mn bimetal oxide nanofibers. NEW J CHEM 2022. [DOI: 10.1039/d1nj04976c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A novel La–Mn bimetal oxide nanofiber adsorbent was fabricated by the combination of an electrospinning approach and heat treatment in a simple strategy to remove fluoride ions from water.
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Affiliation(s)
- Shaoju Jian
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
| | - Yiting Cheng
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
| | - Xiaofan Ma
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Hongtao Guo
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Jiapeng Hu
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
| | - Kaiyin Zhang
- College of Mechanical and Electrical Engineering, Wuyi University, Wuyishan 354300, China
| | - Shaohua Jiang
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Weisen Yang
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
| | - Gaigai Duan
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
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16
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Efficient removal of fluoride from neutral wastewater by green synthesized Zr/calcium sulfate whiskers: An experimental and theoretical study. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127587] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Chen X, Liu L, Yan W, Li M, Xing X, Li Q, Zhu L, Wu T, He X. Effects of nFe 3O 4 capping on phosphorus release from sediments in a eutrophic lake. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:47056-47065. [PMID: 33886054 DOI: 10.1007/s11356-021-14010-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 04/15/2021] [Indexed: 06/12/2023]
Abstract
This study applied the techniques of high-resolution dialysis (HR-Peeper) and diffusive gradients in thin films (DGT) to explore the effects and the behind mechanism for inhibition phosphorus (P) releasing from sediments by nFe3O4 capping. The highest decreasing rates of SRP and labile P (i.e., 49% and 47%, respectively) and the decreased flux of SRP showed that nFe3O4 capping can successfully control sediment internal P release. Adsorption by Fe(III) hydroxides with the oxidation of Fe(II) was one of the reasons for the decrease of P concentrations in nFe3O4 capping sediments. This was supported by the increase of Eh and significant negative correlation between Eh with Fe(II) (soluble and labile Fe(II)) and P (SRP and labile P) and significant positive correlation between Fe(II) and P in sediments by nFe3O4 capping. An outer-sphere complex between positively charged nFe3O4 surface groups and P formation was the other reason to decrease the concentrations of P in the nFe3O4 capping sediments. This was supported by the decrease of pH value in sediments by the capping of nFe3O4. This study shows that nFe3O4, when used as capping agent, can effectively control the sediment internal P release, which is expected to be used as a potential material for repairing lake eutrophication.
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Affiliation(s)
- Xiang Chen
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
| | - Ling Liu
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China.
| | - Wenming Yan
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
| | - Minjuan Li
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
| | - Xiaolei Xing
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Qi Li
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Liangzhen Zhu
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Tingfeng Wu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Xiangyu He
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
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18
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Ogata F, Nagai N, Iijima S, Toda M, Otani M, Nakamura T, Kawasaki N. Exploiting the Different Parameters on the Adsorption of Phosphate Ions and Its Subsequent Recovery Using Complex Nickel-Aluminum-Zirconium Hydroxide. Chem Pharm Bull (Tokyo) 2021; 69:789-795. [PMID: 34334523 DOI: 10.1248/cpb.c21-00340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study, the effect of contact time, temperature, pH, and coexistences on the adsorption of phosphate ions using the complex nickel-aluminum-zirconium hydroxide (NAZ) was evaluated. Moreover, the recovery of adsorbed phosphate ions from NAZ using desorption solution with different concentrations was demonstrated. The results showed that the quantity of phosphate ions adsorbed gradually increased with time, and the adsorption equilibrium was achieved within 24 h after adsorption. This kinetic data could be well described by the pseudo-second-order model with the correlation coefficient in the value of 0.997. Additionally, the quantity of phosphate which was adsorbed increased as temperature increased, and these results corresponded well with both the Langmuir, the correlation coefficient ranged from 0.920-0.949, and Freundlich models, the correlation coefficient ranged from 0.863-0.995. These results showed that the adsorption of phosphate ion was monolayer adsorption onto the NAZ surface. The optimal pH for removal of phosphate ions from aqueous media was during 4-8. In addition, chloride, nitrate, and sulfate ions did not significantly affect to the adsorption capability of phosphate ions in the complex solution system. Finally, the phosphate ions which were adsorbed onto NAZ could be recovered using sodium sulfate solution (recovery percentage: approx. 50% using sodium sulfate solution at 1000 mmol/L). These results highlight the potential of using NAZ as the cost-effectiveness adsorbent for phosphate ions removal from aqueous media.
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Affiliation(s)
| | | | | | | | | | | | - Naohito Kawasaki
- Faculty of Pharmacy, Kindai University.,Antiaging Center, Kindai University
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19
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Tian Z, Lu C, Zhou Y, Zhang Y, Wei W. Phosphoric acid-induced activation of sepiolite for enhanced As(III) adsorption: role of in situ deposition of nano-hydroxyapatite. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1948424] [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)
- Zhuangzhuang Tian
- School of Electronics and Information Engineering, Sias University, Xinzheng, China
| | - Chenchen Lu
- School of Environment, Nanjing Normal University, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
| | - Yue Zhou
- School of Environment, Nanjing Normal University, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
| | - Yong Zhang
- Department of Geological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Wei Wei
- School of Environment, Nanjing Normal University, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, China
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20
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Lee JI, Hong SH, Lee CG, Park SJ. Fluoride removal by thermally treated egg shells with high adsorption capacity, low cost, and easy acquisition. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:35887-35901. [PMID: 33682053 DOI: 10.1007/s11356-021-13284-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
In this study, the use of eggshells was suggested as an adsorbent for fluoride removal, and their mechanism of fluoride removal was investigated. The eggshells underwent thermal treatment to improve their adsorption capacity; 800 °C was found to be the optimal temperature for treatment. Eggshells thermally treated at 800 °C (ES-800) were mainly composed of Ca (82.4%) and C (15.9%), and the peaks of ES-800 obtained from X-ray diffraction (XRD) corresponded to calcite, portlandite, and lime. Fluorine adsorption by ES-800 reached 70% of the equilibrium adsorption amount within 15 min and gradually increased until 24 h. The maximum adsorption capacity of ES-800 at pH 7 and 25 °C was 258.28 mg/g, which is 18 times larger than that of activated alumina; this is classified as the best available technology by the United States Environmental Protection Agency. Both enthalpy and entropy increased in the process of fluoride adsorption onto ES-800. Fluoride adsorption of ES-800 decreased from 59.16 to 11.85 mg/g with an increase in pH from 3 to 11. Fluoride adsorption decreased in the presence of anions, whose impact follows the order: HPO43- > HCO3- >> SO42- > Cl-. XRD, and X-ray photoelectron spectroscopy analysis revealed that fluoride removal was achieved by the formation of calcium fluorite (CaF2). Thus, it can be concluded that eggshells can function as highly efficient adsorbents for fluoride removal, replacing bone char and activated alumina; further, their adsorption capacity can be improved by thermal treatment.
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Affiliation(s)
- Jae-In Lee
- Department of Integrated System Engineering, Hankyong National University, Anseong, 17579, Republic of Korea
| | - Seung-Hee Hong
- Department of Integrated System Engineering, Hankyong National University, Anseong, 17579, Republic of Korea
| | - Chang-Gu Lee
- Department of Environmental and Safety Engineering, Ajou University, Suwon, 16499, Republic of Korea
| | - Seong-Jik Park
- Department of Integrated System Engineering, Hankyong National University, Anseong, 17579, Republic of Korea.
- Department of Bioresources and Rural System Engineering, Hankyong National University, Anseong, 17579, Republic of Korea.
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21
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Angelin A, Kalpana M, Govindan K, Kavitha S. Characterizations and fluoride adsorption performance of wattle humus biosorbent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 30:10.1007/s11356-021-14864-9. [PMID: 34145546 DOI: 10.1007/s11356-021-14864-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
Considering the serious health effects of fluoride contamination, an environment friendly bioadsorbent was derived from wattle humus for fluoride removal by conventional thermal activation process. Analytical characterizations revealed that heterogeneous morphological textured wattle humus enabled remarkable adsorption capacity. XPS analysis substantiated that fluoride had been successfully adsorbed on to the carbonized wattle humus surface through chemisorption. Fluoride adsorption efficiency was systematically rationalized via batch adsorption studies. Experiments were performed at different initial fluoride concentration and scrutinized the impact of contact time (10-120 min), adsorbent dosage (0.5-2.5 g), pH (2.0-9.0), and interfering co-existing ions (SO42-, NO3-, Cl-, and HCO3-) on fluoride removal. Even at different adsorbate dosage (2-10 mg/L), 98% fluoride removal efficiency was achieved under pH > 6. The competitive anions do not interfere the wattle humus fluoride adsorption capacity. Moreover, the adsorption isotherms and kinetics studies inferred that monolayer and multilayer adsorption behavior by wattle humus leads to noticeable fluoride adsorption. Adsorbent regeneration test affirms that regenerated adsorbent found higher (>95%) fluoride removal efficiency even at five recycle runs.
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Affiliation(s)
- Arumugam Angelin
- Department of Biotechnology, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore, Tamil Nadu, 641 114, India
| | - Murugesan Kalpana
- Department of Nano Science and Technology, Tamil Nadu Agricultural University (TNAU), Tamil Nadu, 641 003, India
| | - Kadarkarai Govindan
- Environmental System Laboratory, Department of Civil Engineering, Kyung Hee University (Global Campus), Yongin-si, Gyeonggi-do, Republic of Korea
| | - Subbiah Kavitha
- Department of Biotechnology, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore, Tamil Nadu, 641 114, India.
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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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Talebi SS, Javid AB, Roudbari AA, Yousefi N, Ghadiri SK, Shams M, Mousavi Khaneghah A. Defluoridationof drinking water by metal impregnated multi-layer green graphene fabricated from trees pruning waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18201-18215. [PMID: 33410018 DOI: 10.1007/s11356-020-11743-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
A novel adsorbent with excellent adsorptive properties for fluoride was prepared through a green and cheap synthesis route. Populus caspica pruning wastes, a cheap agri-waste material, were reduced to multi-layer green graphene (MLG) and then post-modified to aluminum/iron modified multi-layer green graphene (AMLG and IMLG). Batch experiments revealed the effect of pH (3-11), contact time (0.5-12 h), and initial fluoride concentration (5-40 mg/L). The conversion of raw material to MLG increased the specific surface area about 120 times (from 4 to 475 m2/g). Furthermore, a significant improvement in zero points of charge (pHzpc) was attained for IMLG (7.1) and AMLG (8) compared with pristine MLG (4.3). Fluoride showed superior affinity to AMLG and IMLG compared with MLG. Fluoride removal increased gradually by pH from 3 to 8 and then decreased sharply up to pH 11. The study of process dynamics demonstrated the monolayer fluoride adsorption onto AMLG and IMLG controlled by the chemisorptions. The highest predicted adsorption capacities based on the Langmuir model were 31.52, 47.01, and 53.76 mg/g for MLG, IMLG, and AMLG, respectively. Considering economic and technical feasibility presents AMLG and IMLG as a promising candidate against water contamination by elevated fluoride. Graphical abstract.
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Affiliation(s)
- Seyedeh Solmaz Talebi
- Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Allaah Bakhsh Javid
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ali Akbar Roudbari
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nader Yousefi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seid Kamal Ghadiri
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran.
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran.
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, P.O. Box: 91735-951, Mashhad, Iran.
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, State University of Campinas (UNICAMP), Campinas, São Paulo, 13083-862, Brazil.
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24
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Zhang W, Mao Y, Lu Y. Development of a novel Artemia eggshell-zirconium nanocomposite for efficient fluoride removal. PLoS One 2021; 16:e0244711. [PMID: 33395694 PMCID: PMC7781666 DOI: 10.1371/journal.pone.0244711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 12/15/2020] [Indexed: 11/19/2022] Open
Abstract
Fluoride pollution in water has attracted widespread concern worldwide. In this study, an Artemia eggshell-zirconium (Aes-Z) nanocomposite has been used for fluoride removal. Material characterization results showed that nano-ZrO2 was immobilized on the inner surface of the Artemia eggshell, and there was no pore blockage on the composite material. Various parameters influencing on the fluoride removal, including treatment time, composite dosage, pH, initial fluoride concentration, and other anions, were analyzed. The removal efficiency of the composite material was better than that of the single zirconia material. The removal percentage of fluoride reached 93% in 30 min with an initial fluoride concentration of 10 mg/L and a nanocomposite dosage of 8.0 g/L. The composite material had a high removal efficiency for fluoride in the pH region 4.0–10.0. The adsorption of fluoride was not influenced by the common anions (e.g., Cl-, SO42-, and NO3-) in water. The regeneration revealed that the Aes-Z composite material could be reused and remove fluoride effectively in four cycles. The pseudo-second-order rate model adequately represented the adsorption kinetics of the Aes-Z composite material. A possible, defluoridation mechanism of the Aes-Z composite material was also proposed. This study demonstrates that Aes-Z is a promising adsorbent material for fluoride removal.
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Affiliation(s)
- Wen Zhang
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
| | - Yuqin Mao
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
| | - Yin Lu
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
- * E-mail:
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25
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Zhang G, Luo J, Wang L, Zhang X. Polyvinyl alcohol-stabilized granular Fe-Mn binary oxide as an effective adsorbent for simultaneous removal of arsenate and arsenite. ENVIRONMENTAL TECHNOLOGY 2020; 41:2564-2574. [PMID: 30691347 DOI: 10.1080/09593330.2019.1575479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 01/23/2019] [Indexed: 06/09/2023]
Abstract
A novel granular Fe-Mn (GFM) binary oxide sorbent, with a diameter of approximate 2.0 mm and a length of 2.0-3.0 mm, was successfully prepared using extrusion granulation method in this study. The GFM sorbent is highly porous with a BET-specific surface area of 210.3 m2/g. It shows high effectiveness in simultaneously adsorbing As(V) and As(III). The maximal sorption capacities for As(V) and As(III) are 33.2 and 50.7 mg/g at pH 7.0 ± 0.1, respectively, which are superior to most of granular sorbents reported in the literature. The present Ca2+, Mg2+, humic acids and fulvic acids do not have obvious influence on the arsenic sorption. But, coexisting anions affect negatively arsenic sorption in the following order: H2PO4 - > SiO3 2- > HCO3 - > SO4 2-. NaOH solution is an effective eluent for regeneration of the arsenic-loaded GFM. The GFM packed in the fixed-bed column can treat approximately 3400 and 6500 bed volumes of simulated groundwater containing 233 μg/L As(V) and As(III), respectively, before the arsenic concentration in the effluent reached a drinking water limit of 10 μg/L. The features of high effectiveness, selectivity and reusability make the GFM a potential alternative to remove simultaneously As(V) and As(III) from groundwater.
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Affiliation(s)
- Gaosheng Zhang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education; Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, People's Republic of China
| | - Jinglin Luo
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education; Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, People's Republic of China
| | - Lei Wang
- College of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, People's Republic of China
| | - Xiwang Zhang
- Department of Chemical Engineering, Monash University, Clayton Australia
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Huang L, Yang Z, He Y, Chai L, Yang W, Deng H, Wang H, Chen Y, Crittenden J. Adsorption mechanism for removing different species of fluoride by designing of core-shell boehmite. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122555. [PMID: 32248029 DOI: 10.1016/j.jhazmat.2020.122555] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Many kinds of adsorbents have been developed for removing fluoride from water. However, the unclear actual mechanism of fluoride adsorption greatly restricts the structural design and application of novel adsorbents. Based on the understanding of the interaction between hydroxyl and fluoride, a novel core-shell nanostructure of boehmite was synthesized via an in-situ-induced assembly for removing fluoride. The formed polycrystalline boehmite (γ-AlOOH) nanostructure significantly enhances adsorption performance. The transformation of fluoride forms (including F-, HF, HF2-) is closely related to the solution property. The acidic solution is more favorable, mainly because of the conversion of HF (pyrazine) and HF2- (the bifluoride ion) with a strong hydrogen bond effect from fluoride (F-) with pH < 3.18. The lattice plane of (0 0 2) belongs to the dominant face for removing fluoride in this structure. According to the experimental and theoretical calculation, strong bonding of Al, O and H sites with fluoride species (F-, HF, HF2-) in acidic solution are demonstrated, but not in alkaline solution due to OH- interference. The possible mechanism of fluoride adsorption on boehmite (AlOOH) structures is proposed. Our findings show a new potential prospect of structural designing for novel fluoride adsorbent.
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Affiliation(s)
- Lei Huang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0355, United States
| | - Zhihui Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
| | - Yingjie He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
| | - Weichun Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China
| | - Haoyu Deng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China.
| | - Yongsheng Chen
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0355, United States.
| | - John Crittenden
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0355, United States
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27
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Zhang G, Liu Y, Wang J, Li H. Efficient arsenic(III) removal from aqueous solution by a novel nanostructured iron-copper-manganese trimetal oxide. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112993] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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M SK, Bhandari R, Nehra A, Manohar CS, Belliraj SK. Zirconium–Cerium and Zirconium–Lanthanum complexed polyvinyl alcohol films for efficient fluoride removal from aqueous solution. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1774386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sai Kiran M
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Anantapur Campus, Anantapur, India
| | - Rajni Bhandari
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Anantapur Campus, Anantapur, India
| | - Anita Nehra
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Anantapur Campus, Anantapur, India
| | - Chelli Sai Manohar
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Anantapur, India
| | - Siva Kumar Belliraj
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Anantapur, India
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29
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Singh S, German M, Chaudhari S, Sengupta AK. Fluoride removal from groundwater using Zirconium Impregnated Anion Exchange Resin. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 263:110415. [PMID: 32883481 DOI: 10.1016/j.jenvman.2020.110415] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/27/2020] [Accepted: 03/06/2020] [Indexed: 05/05/2023]
Abstract
Drinking water containing excess fluoride is a major health concern across the globe. The present study reports the feasibility of zirconium impregnated hybrid anion exchange resin (HAIX-Zr) for treating fluoride contaminated groundwater. The HAIX-Zr resin was prepared by impregnating ZrO2 nanoparticles on polymeric anion exchanger resin. Fluoride uptake by HAIX-Zr was quite rapid, 60% removal was obtained within 30 min. Kinetics of fluoride uptake by HAIX-Zr resin followed the pseudo-second-order kinetic model and adsorption data fitted best to Freundlich adsorption isotherm model. Maximum fluoride uptake capacity was observed as 12.0 mg/g. The defluoridation capacity of the resin decreases with increase in solution pH. The co-existing anions like chloride, phosphate, bicarbonate, nitrate, and sulphate at 100 mg/L concentration significantly affected fluoride removal and bicarbonate showed the highest interference. Continuous flow packed bed experiments were performed with real groundwater. To maintain a lower pH, weak acid cation exchange resin (INDION-236) was used before HAIX-Zr. It was observed that reducing the pH of the sample water to 4-4.5, increased the number of treated bed volumes fifteen times. Regeneration of fluoride-containing resin was done by passing 3% NaOH and 3% NaCl solution through an exhausted resin bed. The results revealed that HAIX-Zr can effectively remove fluoride from groundwater.
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Affiliation(s)
- Sanjay Singh
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, India.
| | - Michael German
- Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, USA.
| | - Sanjeev Chaudhari
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, India.
| | - Arup K Sengupta
- Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, USA.
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30
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Kumari U, Siddiqi H, Bal M, Meikap B. Calcium and zirconium modified acid activated alumina for adsorptive removal of fluoride: Performance evaluation, kinetics, isotherm, characterization and industrial wastewater treatment. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.02.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Kanrar S, Ghosh A, Ghosh A, Mondal A, Sadhukhan M, Ghosh UC, Sasikumar P. One-pot synthesis of Cr(III)-incorporated Zr(IV) oxide for fluoride remediation: a lab to field performance evaluation study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:15029-15044. [PMID: 32065364 DOI: 10.1007/s11356-020-07980-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
A low-cost Cr(III)-incorporated Zr(IV) bimetallic oxide (CZ) was synthesized by simple chemical precipitation method for removal of fluoride from contaminated water. The physicochemical properties of CZ before and after fluoride removal were established with several instrumental techniques such as TEM with elemental mapping, SEM with EDX, XRD, IR, XPS, zeta potential measurement, etc. Batch adsorption technique were carried out to understand the factors affecting fluoride adsorption, such as effects of initial pH, adsorbent dose, co-occurring ions, contact time, and temperature. The maximum adsorption capacity observed at pH between 5 and 7. The fluoride adsorption processes on CZ obeyed the pseudo-second-order rate equations and both Freundlich and DR isotherm models. The maximum adsorption capacity of 90.67 mg g-1 was obtained. The thermodynamic parameters ΔH0 (positive), ΔS0 (positive), and ΔG0 (negative) indicating the fluoride sorption system was endothermic, spontaneous, and feasible. The CZ also successfully used as fluoride adsorbent for real field contaminated water collected from the Machatora district, Bankura, West Bengal, India. Graphical abstract Schematic representation of CZ synthesis and its application for lab as well as field water purification purpose.
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Affiliation(s)
- Sarat Kanrar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, 700073, India
| | - Abir Ghosh
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, 700073, India
| | - Ayan Ghosh
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, 700073, India
| | - Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal By-pass Road, Bhauri, 462066, Madhya Pradesh, India
| | - Mriganka Sadhukhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha, 751 005, India
| | - Uday Chand Ghosh
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, 700073, India
| | - Palani Sasikumar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, West Bengal, 700073, India.
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32
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Wang X, Pan S, Zhang M, Qi J, Sun X, Gu C, Wang L, Li J. Modified hydrous zirconium oxide/PAN nanofibers for efficient defluoridation from groundwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 685:401-409. [PMID: 31176225 DOI: 10.1016/j.scitotenv.2019.05.380] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/24/2019] [Accepted: 05/24/2019] [Indexed: 06/09/2023]
Abstract
Fluoride contamination in groundwater is a worldwide problem that is related to human health. Zirconium-based adsorbents possess satisfactory selective defluoridation capacities. However, narrow efficiency pH range, easy aggregation and difficult separation are the main obstructions in practical application. In this study, the branched polyethyleneimine (bPEI) modified hydrous zirconium oxide (HZO)/polyacrylonitrile (PAN) nanofibers (NFs) are synthesized by immobilizing bPEI-HZO into PAN nanofibers via electrospinning. The resultant bPEI-HZO/PAN NFs exhibit a wide working pH range and an excellent adsorption capacity toward fluoride (67.51 mg·g-1) even at neutral condition, indicating non-negligible superiority in the practical application of groundwater defluoridation. This enhanced adsorption performance along with extended wider working pH range are ascribed to the optimization of the adsorbents from both composition and structure. Compositionally, the modification of bPEI improves the surface property of HZO, and thus increases fluoride capacity in alkaline groundwater. Structurally, electrospinning conquers the drawbacks of nano-adsorbents for both easy aggregation and difficult separation. In addition, the effect of co-existing ions was further investigated and the X-ray photoelectron spectroscopy (XPS) as well as fourier transform infrared spectrum (FTIR) measurements were used to clarify the fluoride adsorption mechanism. Furthermore, the dynamic adsorption and regeneration performance were accomplished through the fixed-bed column experiment. All the results indicated that bPEI-HZO/PAN NFs are promising materials for defluoridation from groundwater.
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Affiliation(s)
- Xuezhu Wang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Shunlong Pan
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ming Zhang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Junwen Qi
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiuyun Sun
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lianjun Wang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jiansheng Li
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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33
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Ma W, Zhang W, Chen Y, Wang Y, Yu F, Liu C. Enhanced removal of fluoride and arsenate ions from aqueous solution by magnetic Mg–Al composite oxides (Fe3O4@Mg–Al–O). INORG NANO-MET CHEM 2019. [DOI: 10.1080/24701556.2019.1661461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Wenqing Ma
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, Qinghai, PR China
| | - Wei Zhang
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, Qinghai, PR China
| | - Yuantao Chen
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, Qinghai, PR China
| | - Yunsheng Wang
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, Qinghai, PR China
| | - Fang Yu
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, Qinghai, PR China
| | - Chen Liu
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, Qinghai, PR China
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34
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Garau G, Lauro GP, Diquattro S, Garau M, Castaldi P. Sb(V) adsorption and desorption onto ferrihydrite: influence of pH and competing organic and inorganic anions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:27268-27280. [PMID: 31321722 DOI: 10.1007/s11356-019-05919-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
In this study, we investigated the Sb(V) adsorption on ferrihydrite (Fh) at different pH values, in the presence and absence of common competing anions in soil such as phosphate (P(V)) and arsenate (As(V)). Batch adsorption experiments, carried out at pH 4.5, 6.0, and 7.0, showed a greater affinity of Fh towards P(V) and As(V) with respect to Sb(V), especially at higher pH values, while the opposite was true at acidic pH. The capacity of Fh to accumulate greater amounts of phosphate and arsenate in the 6.0-7.0 pH range was mainly linked to the different acid properties of P(V), As(V), and Sb(V) oxyanions. The Sb(V) adsorption on Fh was highly pH-dependent and followed the following order: pH 4.5 (0.957 mmol·g-1 Fh) > pH 6.0 (0.701 mmol·g-1 Fh) > pH 7.0 (0.583 mmol·g-1 Fh). Desorption of antimonate from Sb(V)-saturated Fh, treated with citric and malic acid solutions, was ~equal to 55, 68, and 76% of that sorbed at pH 4.5, 6.0, and 7.0, respectively, while phosphate, arsenate, and sulfate were able to release significantly lower Sb(V) amounts. The FT-IR spectra revealed substantial absorbance shifts related to the surface hydroxyl groups of Fh, which were attributed to the formation of Fe-O-Sb(V) bonds and supported the formation of inner-sphere bonding between Sb(V) and Fh.
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Affiliation(s)
- Giovanni Garau
- Dipartimento di Agraria, Sezione di Scienze e Tecnologie Ambientali e Alimentari, University of Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Gian Paolo Lauro
- Dipartimento di Agraria, Sezione di Scienze e Tecnologie Ambientali e Alimentari, University of Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Stefania Diquattro
- Dipartimento di Agraria, Sezione di Scienze e Tecnologie Ambientali e Alimentari, University of Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Matteo Garau
- Dipartimento di Agraria, Sezione di Scienze e Tecnologie Ambientali e Alimentari, University of Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Paola Castaldi
- Dipartimento di Chimica e Farmacia, University of Sassari, Via Vienna 2, 07100, Sassari, Italy.
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35
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Zhang L, Liu X, Huang X, Wang W, Sun P, Li Y. Adsorption of Pb 2+ from aqueous solutions using Fe-Mn binary oxides-loaded biochar: kinetics, isotherm and thermodynamic studies. ENVIRONMENTAL TECHNOLOGY 2019; 40:1853-1861. [PMID: 29364052 DOI: 10.1080/09593330.2018.1432693] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 01/20/2018] [Indexed: 06/07/2023]
Abstract
This study evaluated the removal of Pb2+ in aqueous solution using Fe-Mn binary oxides-loaded biochar (BFMs). The characteristics of BFM were obtained using a scanning electron microscopy, an energy dispersive spectrometer (EDS), Brunauer-Emmett-Teller, a X-ray diffraction (XRD), and a X-ray photoelectron spectroscopy (XPS). The effects of pH, adsorbent dose, contact time, initial Pb2+ concentration, and temperature in the batch sorption experiments were investigated. Adsorption was evaluated by adsorption kinetics, isotherm models, and thermodynamics. With the initial Pb2+ concentration of 200 mg/L, pH 4, and 298.15 K, the optimum adsorption of BFM was obtained at a reaction time of 300 min, adsorbent dose of 2 g/L, and maximum adsorption capacity of 113.715 mg/g. Furthermore, the kinetics was best fitted to the pseudo-second-order model, whereas the adsorption equilibrium was best described by the Langmuir isotherm model. This result indicated that Pb2+ was adsorbed onto BFM by chemical interactions through the monolayer. The adsorption was spontaneous (ΔG < 0) and endothermic (ΔH > 0).
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Affiliation(s)
- Lianke Zhang
- a School of Environmental and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an , People's Republic of China
- b School of Environment and Energy , Inner Mongolia University of Science and Technology , Baotou , People's Republic of China
| | - Xinyu Liu
- b School of Environment and Energy , Inner Mongolia University of Science and Technology , Baotou , People's Republic of China
| | - Xuemin Huang
- a School of Environmental and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an , People's Republic of China
| | - Weida Wang
- b School of Environment and Energy , Inner Mongolia University of Science and Technology , Baotou , People's Republic of China
| | - Peng Sun
- b School of Environment and Energy , Inner Mongolia University of Science and Technology , Baotou , People's Republic of China
| | - Yumei Li
- b School of Environment and Energy , Inner Mongolia University of Science and Technology , Baotou , People's Republic of China
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36
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Barathi M, Kumar ASK, Rajesh N. Impact of fluoride in potable water – An outlook on the existing defluoridation strategies and the road ahead. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.02.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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37
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Studies on novel nano-bimetal doped cellulose nanofibers derived from agrowaste towards deflouridation. Int J Biol Macromol 2019; 128:556-565. [DOI: 10.1016/j.ijbiomac.2019.01.153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 01/04/2019] [Accepted: 01/27/2019] [Indexed: 11/19/2022]
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38
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Gan Y, Wang X, Zhang L, Wu B, Zhang G, Zhang S. Coagulation removal of fluoride by zirconium tetrachloride: Performance evaluation and mechanism analysis. CHEMOSPHERE 2019; 218:860-868. [PMID: 30508804 DOI: 10.1016/j.chemosphere.2018.11.192] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Fluoride (F-) pollution is a worldwide issue. Coagulation with aluminum (Al) salts is an efficient and economical method for the removal of F-. However, due to the strong complexation between Al3+ and F-, the residual F- and Al after coagulation usually exceed the limits. Zirconium (Zr) coagulants have drawn increasing attention due to their excellent flocculation ability for organic matter. In this work, the performance and mechanism of ZrCl4 coagulation for F- removal were investigated with the widely used Al2(SO4)3 as a reference. The optimum pH range is 4.0-6.0 for ZrCl4 and 8.0-10.0 for Al2(SO4)3. ZrCl4 was superior to Al2(SO4)3 for F- removal as the initial F- concentration was less than 30.0 mg L-1. Coexisting substances at environmental concentration levels showed negligible effects on F- removal by ZrCl4. Besides the better F- removal, another advantage of ZrCl4 over Al2(SO4)3 was the much lower residual metal concentration in the pH range of 4.0-11.0. The hydrolysis of Al2(SO4)3 was significantly inhibited due to the formation of Al-F complexes while the hydrolysis of ZrCl4 was not influenced even under strongly acidic conditions. Therefore, F- removal by Al2(SO4)3 was mainly achieved by preliminary complexation between Al3+ and F- and subsequent hydrolysis and polymerization of these complexes, while adsorption onto hydrolysates and ion exchange with surface hydroxyl groups were the main ways of F- removal by ZrCl4. The work here provides a new method for F- removal and may shed light on the application of Zr coagulants for other pollutants.
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Affiliation(s)
- Yonghai Gan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, NanjingUniversity, 210023, PR China
| | - Xiaomeng Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, NanjingUniversity, 210023, PR China
| | - Li Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, NanjingUniversity, 210023, PR China
| | - Bingdang Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, NanjingUniversity, 210023, PR China
| | - Guoyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, NanjingUniversity, 210023, PR China
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, NanjingUniversity, 210023, PR China.
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39
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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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40
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Zhou J, Yu J, Liao H, Zhang Y, Luo X. Facile fabrication of bimetallic collagen fiber particles via immobilizing zirconium on chrome-tanned leather as adsorbent for fluoride removal from ground water near hot spring. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1574826] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jian Zhou
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, PR China
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang, Sichuan, PR China
| | - Jie Yu
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, PR China
| | - Hui Liao
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, PR China
| | - Yongde Zhang
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, PR China
| | - Xuegang Luo
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, PR China
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang, Sichuan, PR China
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41
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Chaudhary M, Maiti A. Defluoridation by highly efficient calcium hydroxide nanorods from synthetic and industrial wastewater. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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42
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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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He J, Cui A, Ni F, Deng S, Shen F, Yang G. A novel 3D yttrium based-graphene oxide-sodium alginate hydrogel for remarkable adsorption of fluoride from water. J Colloid Interface Sci 2018; 531:37-46. [DOI: 10.1016/j.jcis.2018.07.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/08/2018] [Accepted: 07/05/2018] [Indexed: 10/28/2022]
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Khan H, Sharma S. Next-generation organometallic adsorbents for safe removal of excessive fluoride from aqueous systems. J Appl Polym Sci 2018. [DOI: 10.1002/app.46993] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Huma Khan
- Membrane Science & Separation Technology Division; Council of Scientific & Industrial Research-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI); Bhavnagar Gujarat India
| | - Saroj Sharma
- Membrane Science & Separation Technology Division; Council of Scientific & Industrial Research-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI); Bhavnagar Gujarat India
- Academy of Scientific and Innovative Research; Council of Scientific & Industrial Research-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI); Bhavnagar Gujarat India
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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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46
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Chatterjee S, Jha S, De S. Novel carbonized bone meal for defluoridation of groundwater: Batch and column study. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2018; 53:832-846. [PMID: 29652222 DOI: 10.1080/10934529.2018.1455378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Low cost naturally available bone meal was carbonized and its fluoride adsorption capacity was explored. Carbonized bone meal (CBM) produced at 550°C, 4 h carbonization time and a heating rate of 60°C/min, showed fluoride adsorption capacity of 14 mg g-1. Adsorbent was characterized using scanning electron microscopy, X-ray diffraction, X-ray fluoroscence, thermogravimetric analysis and Fourier transform infrared spectroscopy to highlight its physical and chemical properties. Best fluoride uptake capacity was observed for 0.2 mm particle size, 7 g L-1 adsorbent concentration and at pH 6.5. Fluoride uptake was endothermic and chemisorption in nature. Effective diffusivity and mass transfer coefficient were obtained as 6 × 10-11 m2 s-1 and 9 × 10-5 m s-1 from shrinking core model. Sulphate and carbonate showed the highest interference effect on adsorption of fluoride by CBM. Maximum desorption was observed at basic pH (pH 12). Fixed bed study was performed and effect of different parameters (bed height, inlet flow rate and initial concentration) was investigated. Efficiency of the adsorbent using real life fluoride contaminated groundwater solution was also observed.
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Affiliation(s)
- Somak Chatterjee
- a Department of Chemical Engineering , Indian Institute of Technology , Kharagpur , West Bengal , India
| | - Sanjay Jha
- a Department of Chemical Engineering , Indian Institute of Technology , Kharagpur , West Bengal , India
| | - Sirshendu De
- a Department of Chemical Engineering , Indian Institute of Technology , Kharagpur , West Bengal , India
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Dou X, Wang GC, Zhu M, Liu F, Li W, Mohan D, Pittman CU. Identification of Fe and Zr oxide phases in an iron-zirconium binary oxide and arsenate complexes adsorbed onto their surfaces. JOURNAL OF HAZARDOUS MATERIALS 2018; 353:340-347. [PMID: 29680692 DOI: 10.1016/j.jhazmat.2018.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 04/01/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
The Fe-Zr binary oxide adsorbents have higher arsenic adsorptive capacities than either iron oxide or zirconium oxide alone, indicating a strong synergistic effect exists between Fe and Zr oxides. However, no generally accepted in-depth explanations have been reached on the origin of this better performance. In the present study, the component phases, the active surface sites, the structure of the adsorbed As(V) surface species, and the mechanism of the synergistic effect, were investigated and elucidated using multiple advanced experimental techniques combined with quantum chemical calculations. Goethite and lepidocrocite were identified as the main Fe oxide components while amorphous zirconium hydroxide was the main Zr oxide component, respectively. A monodentate-mononuclear complex and a bidentate-binuclear complex were revealed to be dominant on the surface, respectively, when at lower and higher initial As(V) concentrations. Density functional theory calculations indicated that As(V) preferred to bind with Zr-OH rather than Fe-OH. This was verified with the As K-edge EXAFS results and XPS observations. The synergistic effect was due to a short-range ordering state, the enlarged contents of amorphous and poorly-crystalline fractions, and increased hydroxyl surface site density. These results lead to the realization that the above properties are preferred in future adsorbent preparations.
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Affiliation(s)
- Xiaomin Dou
- College of Environmental Science and Engineering, Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, PR China.
| | - Gui-Chang Wang
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and Tianjin key Lab and Molecule-based Material Chemistry, Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China.
| | - Mengqiang Zhu
- Department of Ecosystem Science and Management, University of Wyoming, Laramie, WY 82071, USA
| | - Fudong Liu
- Lawrence Berkeley National Laboratory, Materials Sciences Division, Berkeley, CA, USA
| | - Wei Li
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, PR China
| | - Dinesh Mohan
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Charles U Pittman
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
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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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Hydrous ZrO2 decorated polyaniline nanofibres: Synthesis, characterization and application as an efficient adsorbent for water defluoridation. J Colloid Interface Sci 2017; 508:342-358. [DOI: 10.1016/j.jcis.2017.08.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/13/2017] [Accepted: 08/15/2017] [Indexed: 11/22/2022]
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