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Kim WT, Lee JW, An HE, Cho SH, Jeong S. Efficient Fluoride Wastewater Treatment Using Eco-Friendly Synthesized AlOOH. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2838. [PMID: 37947684 PMCID: PMC10648790 DOI: 10.3390/nano13212838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/22/2023] [Accepted: 10/24/2023] [Indexed: 11/12/2023]
Abstract
Fluoride ion is essential for health in small amounts, but excessive intake can be toxic. Meeting safety regulations for managing fluoride ion emissions from industrial facilities with both cost-effective and eco-friendly approaches is challenging. This study presents a solution through a chemical-free process, producing a boehmite (AlOOH) adsorbent on aluminum sheets. Utilizing cost-effective Al foil and DI water, rather than typical precursors, yields a substantial cost advantage. The optimized AlOOH adsorbent demonstrated a high fluoride ion removal rate of 91.0% in simulated wastewater with fluoride ion concentrations below 20 ppm and displayed a similar performance in industrial wastewater. Furthermore, the AlOOH adsorbent exhibited excellent reusability through a simple regeneration process and maintained stable performance across a wide pH range of 4 to 11, demonstrating its capability to adsorb fluoride ions under diverse conditions. The efficiency of the AlOOH adsorbent was validated by a high fluoride ion removal efficiency of 90.9% in a semi-batch mode flow cell, highlighting its potential applicability in engineered water treatment systems. Overall, the AlOOH adsorbent developed in this study offers a cost-effective, eco-friendly, and sustainable solution for effectively removing fluoride ion from surface waters and industrial wastewaters.
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Affiliation(s)
| | | | | | | | - Sohee Jeong
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; (W.-T.K.); (J.-W.L.); (H.-E.A.); (S.-H.C.)
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2
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Adu-Boahene F, Boakye P, Agyemang FO, Kanjua J, Oduro-Kwarteng S. Understanding fluoride adsorption from groundwater by alumina modified with alum using PHREEQC surface complexation model. Sci Rep 2023; 13:12307. [PMID: 37516751 PMCID: PMC10387067 DOI: 10.1038/s41598-023-38564-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/11/2023] [Indexed: 07/31/2023] Open
Abstract
Fluoride is recognized as a vital ion for human and animal growth because of the critical role it plays in preventing skeletal and dental problems. However, when it is ingested at a higher concentration it can cause demineralization of teeth and bones resulting in fluorosis, therefore, the production of high-adsorptive capacity material which is also cost-effective is necessary for the treatment of fluorides. In this study, aluminium foil is valorised into alumina nanoparticles. The as-prepared alumina was modified with alum in two different ratios of 1:0.5 and 1:1 (alumina to alum w/w%) and later used as adsorbents for the removal of fluoride from groundwater. The adsorbents were characterized by Fourier transform infrared spectroscopy, point of zero charge and X-ray diffraction. Different factors that influence the removal efficiency of fluorides such as pH, initial concentrations, contact time and adsorbent dosage were studied and optimized using a simulated fluoride solution. The optimum conditions obtained were used to test real groundwater. The static experiment conditions were used to calibrate a PHREEQC geochemical model which was later used to simulate the fluoride sorption onto the modified alumina at different conditions. PHREEQC was also coupled with parameter estimation software to determine equilibrium constants for the surface reactions between the fluoride species and the adsorbent in a way that the simulations accurately reflect the outcomes of laboratory experiments. Isotherm studies were carried out on the adsorbents. Both Langmuir and Freundlich's non-linear models fitted well for the equilibrium data. However, with a higher coefficient of regression and low chi-square test values, the adsorption process was more of chemisorption on a monolayer surface. Kinetic studies were also carried out by using the non-linear equations from the pseudo-first-order and pseudo-second-order models. The pseudo-second-order model fitted well for the equilibrium data. The mechanism for the fluoride ion adsorption was also studied by the intraparticle (IP) diffusion model and was found that IP was not the rate-determining factor, and therefore the most plausible mechanism for the sorption process was ion exchange or attraction of fluoride ions to the sorbent surface. The findings obtained from this research show that readily available aluminium waste could be valorised into a useful product that could be employed in the removal of fluoride from water samples, including groundwater, that may contain too much fluoride and pose a risk to the general public's health.
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Affiliation(s)
- Francis Adu-Boahene
- Department of Civil Engineering (Regional Water and Environmental Sanitation Centre, Kumasi), Kwame Nkrumah University of Science and Technology, PMB, Kumasi, Ghana
| | - Patrick Boakye
- Department of Chemical Engineering, Kwame Nkrumah University of Science and Technology, PMB, Kumasi, Ghana.
- Institute of Computation and Neuroscience, Apemso, Kumasi, Ghana.
| | - Frank Ofori Agyemang
- Department of Materials Engineering, Kwame Nkrumah University of Science and Technology, PMB, Kumasi, Ghana
| | - Jolly Kanjua
- Institute of Computation and Neuroscience, Apemso, Kumasi, Ghana
| | - Sampson Oduro-Kwarteng
- Department of Civil Engineering (Regional Water and Environmental Sanitation Centre, Kumasi), Kwame Nkrumah University of Science and Technology, PMB, Kumasi, Ghana
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Zhang Q, Zhou Y, Yao Q, Zhang F, Chen W, Liu Y. Comparison of fluorine removal performance and mechanism of spheroidal magnesium oxide before and after lanthanum modification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:80477-80490. [PMID: 35717549 DOI: 10.1007/s11356-022-21177-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Firstly, spherical magnesium oxide was synthesized by simple magnesium salt and specific reaction conditions. Then, lanthanum-modified spherical magnesium oxide (LSMO) was prepared by impregnation of lanthanum salt. The adsorption mechanism of the adsorbent was investigated by XRD, SEM, XPS, and FT-IR. Through the study of fluorine removal performance, for the solution with fluoride ion concentration of 10 mg·L-1, the fluorine removal efficiency of lanthanum-modified spherical magnesium oxide (15LSMO) (93.1%) with 15% impregnation mass ratio is higher than that of SMO (82.7%). In addition, in the pH range of 2-11 or in the presence of interfering ions, the fluoride removal effect of 15LSMO still meets the fluoride removal efficiency of more than 90%. The research enhanced the profound insights into the effect and mechanism of fluorine removal of lanthanum modified materials.
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Affiliation(s)
- Qiang Zhang
- School of Chemistry and Chemical Engineering, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Southeast University, Nanjing, 211189, China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Southeast University, Nanjing, 211189, China.
| | - Qingzhao Yao
- School of Chemistry and Chemical Engineering, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Southeast University, Nanjing, 211189, China
| | - Fanli Zhang
- School of Chemistry and Chemical Engineering, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Southeast University, Nanjing, 211189, China
| | - Wanying Chen
- School of Chemistry and Chemical Engineering, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Southeast University, Nanjing, 211189, China
| | - Yang Liu
- Varun Water Environmental Technology Co, Ltd, 215400, Taicang, China
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4
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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: 2] [Impact Index Per Article: 1.0] [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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Li W, Wang Z, Zhang X, Zhang Y, Long T, Wang X, Zhang J, Liu J. Tailored design of a novel composite foam of sodium alginate used for fluoride ion removal. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:643-655. [PMID: 36038969 DOI: 10.2166/wst.2022.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Fluoride is an essential micronutrient for humans. Nonetheless, when the amount of fluoride ion is greater than required, it will cause skeletal fluorosis and dental fluorosis to threaten human health. In this paper, a series of sodium alginate (SA)-based foam materials are prepared by freeze-drying technique and anchored with the nano-activated alumina (nAl2O3) in the SA to obtain a novel adsorbent of SA-nAl2O3 foam used for fluoride ions removal. The SA-nAl2O3 foam morphology was further explored and confirmed that nAl2O3 existed stably in the SA. The adsorption results showed that the maximal fluoride ion adsorption capacity was 5.09 mg/g with 20 mg/L fluorine solutions at a pH of 3. The adsorption isotherm fitted adequately to the Langmuir isotherm model, which demonstrated that the adsorption process is closer to monolayer adsorption. The adsorption kinetics behavior of SA-nAl2O3 foam was described by a pseudo-second-order model, and the adsorption process occurred by chemisorption. Adsorption thermodynamics analysis emphasized that the adsorption process was spontaneous and endothermic. The main mechanism of the foam is ion exchange. The SA-nAl2O3 foam exhibited excellent regeneration performance and stability after three cycles.
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Affiliation(s)
- Wenfei Li
- Joint Research Center for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, PR China E-mail:
| | - Zhe Wang
- Joint Research Center for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, PR China E-mail:
| | - Xinbo Zhang
- Joint Research Center for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, PR China E-mail:
| | - Yufeng Zhang
- Joint Research Center for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, PR China E-mail:
| | - Tianwei Long
- Joint Research Center for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, PR China E-mail:
| | - Xiao Wang
- TG Hilyte Environment Technology (Beijing) Co., Ltd, Beijing 100000, PR China
| | - Jianqing Zhang
- TG Hilyte Environment Technology (Beijing) Co., Ltd, Beijing 100000, PR China
| | - Jiayuan Liu
- Dayu Rural Environment Science and Technology DevelopmentCo., Ltd, Tianjin 301739, PR China
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6
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Saraiva ÍCG, Ezaki S, Calabria GD, Shinzato MC. Groundwater defluoridation efficacy of manganese-oxide-coated alumina prepared via two-step heating. ENVIRONMENTAL TECHNOLOGY 2022; 43:2684-2696. [PMID: 33615995 DOI: 10.1080/09593330.2021.1894242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 02/17/2021] [Indexed: 06/12/2023]
Abstract
Fluoride concentrations in groundwater can be high in some Brazilian aquifers and therefore these waters should be treated before consumption. This study assessed the properties of Mn-oxide-coated alumina (AM) prepared by two-step heating in water defluoridation. The release of secondary contaminants (e.g. Al3+ and Mn2+) from alumina was also examined, as their removal by vermiculite. The process of Mn-oxide coating changed some properties of the activated alumina (AA), decomposing the crystalline phases and reducing some parameters, e.g. specific surface area (from 295.90 to 94.51 m2 g-1) and pHPZC (from 7.34 to 5.74). These changes increased the efficiency and kinetics of alumina in removing F- from synthetic solutions and groundwater (from 80%/16 h to 100%/1 h). This efficiency was not affected by the presence of other anions in groundwater, such as HCO3- and SO42-. The optimum rate of F- removal occurred at pH 5; however, during the F- removal, Al3+ and Mn2+ ions were released, respectively, from the AA (0.61 mg L-1 Al3+) and from the AM ( 52 mg L-1 Mn2+). Vermiculite used to remove these cations adsorbed about 86% Al3+ and 90% Mn2+. However, only Al3+ concentrations fell below the standard limit for drinking water of <0.5 mg L-1. Therefore, AA has the advantage of not containing Mn, and after 3 h kept F- concentrations in solutions 5 mg L-1F- below the standard limit of 1.5 mg L-1. This study revealed that, depending on the groundwater characteristics, AA may be more efficient and sustainable for defluoridation than coated alumina.
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Affiliation(s)
- Ísis Cristina Garcia Saraiva
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas da Universidade Federal de São Paulo, Diadema, Brazil
| | - Sibele Ezaki
- Instituto Geológico - Secretaria de Infraestrutura e Meio Ambiente, São Paulo, Brazil
| | - Giovanna Dias Calabria
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas da Universidade Federal de São Paulo, Diadema, Brazil
| | - Mirian Chieko Shinzato
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas da Universidade Federal de São Paulo, Diadema, Brazil
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Fixed-Bed Adsorption: Comparisons of Virgin and Zirconium Oxide-Coated Scoria for the Removal of Fluoride from Water. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082527. [PMID: 35458725 PMCID: PMC9031718 DOI: 10.3390/molecules27082527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 12/07/2022]
Abstract
Many people worldwide are exposed to extreme levels of fluoride in drinking water. It is, therefore, critical to develop inexpensive, locally available, and environmentally friendly adsorbents for fluoride-laden water defluoridation. In the current study, virgin scoria (volcanic rock) from Ethiopia, was modified with zirconium oxide and used as an adsorbent in a fixed-bed column aiming at the removal of fluoride from water. The adsorption capability of zirconium oxide-coated scoria (ZrOCSc) was compared with unmodified virgin scoria (VSco). XRD, FTIR, XRF, SEM, ICP-OES, and the pHPZC tests were evaluated to explore the adsorption mechanisms. Thermal analysis of VSco and ZrOCSc revealed lower total weight losses of 2.3 and 3.2 percent, respectively, owing to the removal of water molecules and OH species linked to metal oxides contained in the material. The effect of test conditions such as the pH of the solution and the influent flow rate on the adsorption capacity of the adsorbent was carefully studied. ZrOCSc exhibited the maximum removal capacity of 58 mg/kg, which was 4.46 times higher than the observations for VSco (13 mg/kg) at pH 2, and an initial flow rate of 1.25 mL/min. Breakthrough time increased with decreasing initial pH and flow rate. The adsorption experimental data under various test conditions were examined by the Thomas and Adams–Bohart models. Both models were found very effective in describing the experimental data with a correlation coefficient (R2) of ≥0.976 (ZrOCSc) and ≥0.967 (VSco). Generally, coating VSco with zirconium oxide improved the adsorption performance of VSco; hence, a ZrOCSc-packed fixed bed could be employed for the decontamination of high levels of fluoride from groundwater. However, further examination of the adsorbent using natural groundwater is advisable to produce a definitive conclusion.
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Zare K, Banihashemi A, Javanbakht V, Mohammadifard H. Fluoride removal from aqueous solutions using alginate beads modified with functionalized silica particles. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132217] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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9
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Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from Polygonum orientale Linn. WATER 2022. [DOI: 10.3390/w14040592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Al- and La-modified adsorbent materials (PO–Al, PO–La) were prepared by impregnating Polygonum orientale Linn. straw with Al2(SO4)3 and La(NO3)3·6H2O solutions. The potential of removing fluoride using these modified adsorbents was examined. In the PO, PO–Al and PO–La adsorption systems, the fluoride adsorption process followed pseudo-second-order kinetics, and the kinetic constants for k2 and R2 were 0.0276 and 0.9609; 0.2070 and 0.9994; 0.1266 and 0.9933, respectively. The adsorption equilibrium results showed the best match with Langmuir isotherms. Moreover, the maximum monolayer adsorption capacity of PO, PO–Al and PO–La are 0.0923, 3.3190 and 1.2514 mg/g, respectively, in 30 °C. The regeneration results show that the effectively regenerating ability of modified adsorbents. Al-modified adsorbent showed the best results in terms of cost-effectiveness and adsorption efficiency for fluoride adsorption.
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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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Chen J, Yang R, Zhang Z, Wu D. Removal of fluoride from water using aluminum hydroxide-loaded zeolite synthesized from coal fly ash. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126817. [PMID: 34396971 DOI: 10.1016/j.jhazmat.2021.126817] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
The removal of fluoride from wastewater is essential as the excess accumulation of fluoride in environment is harmful to the health of humans. In this study, the defluorination of water by aluminum hydroxide-coated zeolite (AHZ), which was synthesized from coal fly ash, was investigated in batches. The Langmuir maximum adsorption capacity of fluoride by AHZ reached 18.12 mg/g. Aluminum hydroxide was shown to be the major component that adsorbed fluoride. More than 92% removal of fluoride was achieved within 2 h, and the fluoride adsorption kinetics were well fitted to a pseudo-second-order model. The point of zero charge (pHpzc) of the AHZ was determined to be 5.52. Fluoride adsorption by AHZ depended greatly on pH, and maximum performance was obtained at pH 5.5-6.5. The AHZ showed good selectivity for the adsorption of fluoride in the presence of chloride, nitrate, sulfate, bicarbonate, and acetate ions, and the fluoride was nearly exhausted at a sufficiently high dose. The release of OH- due to fluoride adsorption was confirmed. FTIR and XPS studies further illustrated that the adsorption mechanism of fluoride adsorption on AHZ was ligand exchange with hydroxyl groups and the formation of F-Al bonds.
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Affiliation(s)
- Jiabin Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai 200240, China
| | - Renjie Yang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai 200240, China
| | - Zhiyong Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai 200240, China
| | - Deyi Wu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai 200240, China.
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12
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Kinetic and Thermodynamic Characteristics of Fluoride Ions Adsorption from Solution onto the Aluminum Oxide Nanolayer of a Bacterial Cellulose-Based Composite Material. Polymers (Basel) 2021; 13:polym13193421. [PMID: 34641236 PMCID: PMC8512848 DOI: 10.3390/polym13193421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/24/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022] Open
Abstract
The described research examined the adsorption of fluoride ions from solution immobilized onto an aluminum oxide-coated bacterial cellulose-based composite material in which aluminum oxide had been deposited using ALD technology. The kinetic regularities of the adsorption of fluoride ions from the solution as well as the mechanism of the processes were analyzed. The established equations show that the dynamics of adsorption correspond to first-order kinetics. Based on the Langmuir adsorption isotherms, we defined the adsorption equilibrium constants, parameter maximum adsorption, and change in Gibbs free energy. It is shown that, with increasing temperature, an increase in the reaction rate is constant, both forward and reverse. This testifies to the activated character of adsorption of the first fluoride on the surface of the sorbent based on bacterial cellulose modified with an alumina nanolayer. The activation energy of the desorption process is higher than the activation energy of the adsorption process, which characterizes the adsorption as ionic. The negative value of entropy indicates that in the course of sorption, an adsorption complex "aluminum-fluorine" is formed, where the system is more ordered than the initial system in which fluorine ions are in solution. The limiting stages of the process are revealed. The high sorption capacity of the resulting bacterial cellulose-based composite material obtained by means of biosynthesis through cultivation of the bacterium Komagataeibacter sucrofermentans B-11267 was demonstrated.
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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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14
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Removal of Fluorides from Aqueous Solutions Using Exhausted Coffee Grounds and Iron Sludge. WATER 2021. [DOI: 10.3390/w13111512] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Many countries are confronted with a striking problem of morbidity of fluorosis that appears because of an increased concentration of fluorides in drinking water. The objective of this study is to explore opportunities for removal of fluoride from aqueous solutions using cheap and easily accessible adsorbents, such as exhaustive coffee grounds and iron sludge and to establish the efficiency of fluoride removal. Twelve doses (1, 2, 3, 4, 5, 6, 10, 20, 30, 40, 50 and 60 g/L) of adsorbents were used and five durations of the sorption process (30, 60, 90, 120 and 150 min). The results showed that the most optimum dose of iron sludge for 3 mg/L of fluoride removal was 30 g/L and the contact time was 30 min, the efficiency of fluoride removal achieved 62.92%; the most optimum dose of exhausted coffee grounds was 60 g/L with the most optimum contact time of 60 min; at a dose of 50 g/L with contact time of 90 min, the efficiency of fluoride removal achieved 56.67%. Findings demonstrate that adsorbents have potential applicability in fluoride removal up to the permissible norms.
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15
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Dehghani MH, Gholami S, Karri RR, Lima EC, Mahvi AH, Nazmara S, Fazlzadeh M. Process modeling, characterization, optimization, and mechanisms of fluoride adsorption using magnetic agro-based adsorbent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 286:112173. [PMID: 33618321 DOI: 10.1016/j.jenvman.2021.112173] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/08/2021] [Accepted: 02/08/2021] [Indexed: 12/07/2022]
Abstract
In this study, fluoride removal from polluted potable water using magnetic carbon-based adsorbents derived from agricultural biomass was thoroughly investigated. An experimental matrix is designed considering the interactive effects of independent process variables (pH, adsorbent dose, contact time, and initial fluoride concentration) on the removal efficiency. Isotherms and kinetics studies, as well as anions interactions, were also investigated to understand the adsorption mechanisms further. The model parameters of isotherms and kinetics are estimated using nonlinear differential evolution optimization (DEO). Approaches like adaptive neuro-fuzzy inference system (ANFIS) and response surface methodology (RSM) are implemented to predict the fluoride removal and identify the optimal process values. The optimum removal efficiency of GAC-Fe3O4 (89.34%) was found to be higher than that of PAC-Fe3O4 (85.14%). Kinetics experiments indicated that they follow the intraparticle diffusion model, and adsorption isotherms indicated that they follow Langmuir and Freundlich models. Both PAC-Fe3O4 and GAC-Fe3O4 adsorbents have shown an adsorption capacity of 1.20 and 2.74 mg/g, respectively. The model predictions from ANFIS have a strong correlation with experimental results and superior to RSM predictions. The shape of the contours depicts the nonlinearity of the interactive effects and the mechanisms in the adsorption process.
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Affiliation(s)
- Mohammad Hadi Dehghani
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Institute for Environmental Research, Center for Solid Waste Research, Tehran University of Medical Sciences, Tehran, Iran.
| | - Solmaz Gholami
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Rama Rao Karri
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Brunei Darussalam.
| | - Eder C Lima
- Laboratory of Environmental Technology and Analytical Chemistry (Latama), Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Postal Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Amir Hossein Mahvi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Institute for Environmental Research, Center for Solid Waste Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahrokh Nazmara
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Fazlzadeh
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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16
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Fabrication of Manganese-Supported Activated Alumina Adsorbent for Defluoridation of Water: A Kinetics and Thermodynamics Study. WATER 2021. [DOI: 10.3390/w13091219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fluoride pollution frequently occurs in many underground drinking water sources due to discrepancies in the geological environment. To address this problem, a manganese-supported activated alumina (MnOOH-supported AA) adsorbent was proposed in the present study. The adsorbent was prepared with an impregnation method, then the morphology and microstructure were systematically characterized. Further, the adsorption kinetics and thermodynamics were systematically explored through static experiments to confirm the adsorption mechanism. The results showed that MnOOH was successfully loaded on the activated alumina (AA), and irregular and convex spinous structures were formed on the surface of particles. Compared with the AA, MnOOH-supported AA exhibited a significantly higher defluoridation rate, which has been doubled. The kinetic behavior of fluoride adsorption on MnOOH-supported AA was governed by the quasi-second-order kinetics model with regression coefficients of 0.9862, 0.9978 and 0.9956, respectively. The adsorption rate was mainly ascribed to the intra-particle diffusion. Additionally, the Freundlich isotherm equation fitted the adsorption thermodynamic process reasonably well compared with the Langmuir adsorption model. Specifically, the correlation coefficients were 0.9614, 0.9383 and 0.9852 at 25 °C, 35 °C and 45 °C, respectively. The adsorption–desorption isotherm plot was similar to the Type V isotherm. The whole fluoride adsorption was a spontaneous endothermic reaction, and controlled by chemical adsorption. These results demonstrated that MnOOH-supported AA as an alternative to the conventional AA showed promising potential for defluoridation in drinking water treatment.
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17
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Huang L, Yang Z, Lei D, Liu F, He Y, Wang H, Luo J. Experimental and modeling studies for adsorbing different species of fluoride using lanthanum-aluminum perovskite. CHEMOSPHERE 2021; 263:128089. [PMID: 33297087 DOI: 10.1016/j.chemosphere.2020.128089] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 06/12/2023]
Abstract
We investigated the adsorption mechanisms for removing fluoride based on experimental and modeling studies. Lanthanum-aluminum perovskite was designed for treating wastewater contaminated by fluoride. A fluorine-species model was developed to calculate the concentrations of different species of fluorine: F-, HF, HF2-. Multiple kinetic models were examined and the pseudo-second order model was found the best to fit the experimental data, implying fast-chemisorption. The thermodynamic data were fitted by the Langmuir model and Freundlich model at different temperatures, indicating heterogeneous adsorption at low temperature and homogeneous adsorption at high temperature. The La2Al4O9 material had less influence from negative ions when adsorbing fluoride. The adsorption mechanisms were further studied using experiments and Density Functional Theory calculations. The adsorption experiments could be attributed to the lattice plane (1 2 1) and La, O, Al sites. More Al sites were required than La sites for the increase of fluoride concentration. By contrast, more La sites than Al sites were needed for increased pH.
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Affiliation(s)
- Lei Huang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - 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
| | - Dongxue Lei
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Fansong Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Yingjie He
- 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.
| | - Jian Luo
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0355, USA
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18
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Dolganov AV, Balandina AV, Chugunov DB, Timonina AS, Knyazev AV. Sorption of Fluoride Ions onto Cellulose and Aluminum Oxide Composites. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620110030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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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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20
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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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21
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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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22
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Li Y, Liu S, Wang C, Ying Z, Huo M, Yang W. Effective column adsorption of triclosan from pure water and wastewater treatment plant effluent by using magnetic porous reduced graphene oxide. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121942. [PMID: 31881495 DOI: 10.1016/j.jhazmat.2019.121942] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 12/18/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
The ubiquitous presence of triclosan (TCS) in aquatic systems is of great concern. In the present work, magnetic porous reduced graphene oxide (MPrGO) was synthesized via in situ chemical co-precipitation of Fe3+and porous graphene oxide and, was used as an adsorbent for the removal of TCS with μg/L level from both pure water and wastewater treatment plant (WWTP) effluent by conducting with continuous flow fixed column. The BET surface area of MPrGO (1070 m2/g) was about tenfold higher than that of commercial powder activated carbon (PAC). Fast adsorption equilibrium can be reached within 20 s, the maximum adsorption capacity of TCS on MPrGO reached 1105.8 mg/g, and the sorbent can be regenerated for reusability about 5 cycles. The breakthrough time was 50 days for the bed depth of 2.3 mm at the inlet TCS concentration of 100 μg/L. MPrGO exhibited a much higher affinity toward TCS than PAC as the breakthrough time for MPrGO was 6.5 times longer than that for PAC. The Thomas and Yoon-Nelson models provide a better fitting curve than that by the Adams-Bohart model. High TCS adsorption capacity of 935.3 mg/g was calculated from WWTP effluent.
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Affiliation(s)
- Ye Li
- School of Environment, Northeast Normal University, Changchun 130117, China; Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection, Jilin Province, Northeast Normal University, Changchun 130117, China; Engineering Lab for Water Pollution Control and Resources Recovery, Jilin Province, Northeast Normal University, Changchun 130117, China
| | - Shibo Liu
- Eco-environmental Monitoring and Scientific Research in Songliao Basin, Songliao Basin Eco-environmental Supervision and Administration Bureau, Ministry of Eco-environment, Changchun 130042, China
| | - Chi Wang
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Zhian Ying
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Mingxin Huo
- School of Environment, Northeast Normal University, Changchun 130117, China; Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection, Jilin Province, Northeast Normal University, Changchun 130117, China; Engineering Lab for Water Pollution Control and Resources Recovery, Jilin Province, Northeast Normal University, Changchun 130117, China
| | - Wu Yang
- School of Environment, Northeast Normal University, Changchun 130117, China; Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection, Jilin Province, Northeast Normal University, Changchun 130117, China; Shandong Key Laboratory of Water Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, China.
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23
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Yu J, He W, Liu B. Adsorption of Acid Orange Ⅱ with Two Step Modified Sepiolite: Optimization, Adsorption Performance, Kinetics, Thermodynamics and Regeneration. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17051732. [PMID: 32155805 PMCID: PMC7084734 DOI: 10.3390/ijerph17051732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/25/2022]
Abstract
In this study, a two-step modification of sepiolite for adsorption enhancement was investigated. The cetyltrimethylammonium bromide (CTAB) was utilized for the organic modification process after a heat modification. To develop the optimal modification condition, adsorption of Acid Orange II onto modified sepiolite was investigated with respect to heat temperature and adsorbent dosage. The temperature of 200 °C and 100% cation exchange capacity (CEC) was deemed as the optimal condition. The impacts of operation conditions on adsorption procedure, including pH, adsorbent dosage and adsorption duration, were comprehensively discussed. The adsorption of Acid Orange II by sepiolite is in accordance with the quasi-secondary kinetic model. Moreover, the results of intraparticle diffusion indicate that the intraparticle diffusion was the dominant adsorption force in the initial adsorption period. The adsorption process was obeyed with the Langmiur adsorption model. The results from regeneration procedure suggest that the superior regeneration obtained with 0.8 mol/L NaOH concentration.
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Affiliation(s)
- Jian Yu
- Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha 410082, China; (J.Y.); (W.H.)
| | - Wenting He
- Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha 410082, China; (J.Y.); (W.H.)
| | - Bin Liu
- Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha 410082, China; (J.Y.); (W.H.)
- Department of Chemical Engineering, Process Engineering for Sustainable Systems (ProcESS), KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Correspondence:
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24
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Sengupta P, Saha S, Banerjee S, Dey A, Sarkar P. Removal of fluoride ion from drinking water by a new Fe(OH) 3/ nano CaO impregnated chitosan composite adsorbent. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1725567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Priyanka Sengupta
- Department of Polymer Science and Technology, University of Calcutta, Kolkata, India
| | - Suparna Saha
- Department of Chemical Engineering, Jadavpur University, Kolkata, India
| | - Suchetana Banerjee
- Department of Polymer Science and Technology, University of Calcutta, Kolkata, India
| | - Ayan Dey
- Indian Institute of Packaging, Mumbai, India
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25
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Tao W, Zhong H, Pan X, Wang P, Wang H, Huang L. Removal of fluoride from wastewater solution using Ce-AlOOH with oxalic acid as modification. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121373. [PMID: 31607582 DOI: 10.1016/j.jhazmat.2019.121373] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/28/2019] [Accepted: 09/30/2019] [Indexed: 05/21/2023]
Abstract
In this paper, Ce-AlOOH were investigated to develop as an adsorbent for removing fluoride. Oxalic acid was selected as an effectively modified reagent to improve the performance of adsorption. Cerium existed in the form of CeO2 and kept good stability during the adsorption process through XRD, TEM, BET, Raman, and Infrared spectra. The adsorption capacity could be improved with the addition of cerium (62.8 mg/g). Specially, the oxalic acid modification significantly promoted the adsorption capacity to 90 mg/g. There adsorption isotherm and kinetics were estimated independently. These adsorption behaviors were in accordance with the Freundlich model and pseudo-second-order model, indicating that chemisorption was the rate-determining step. the obtained adsorbents all exhibited good recycling performance using oxalic acid as the regeneration reagent. The species of tetravalent cerium was the important adsorption sites. The mechanism was carefully explored by XPS analysis. The fluoride adsorption process can be ascribed to the combined effect of the electrostatic action, surface coordination, and ion exchange between M-OH and F-. Furthermore, modification of oxalic acid exhibited a new easier way to quickly increase M-OH content, which contributed to the dominated adsorption sites.
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Affiliation(s)
- Wen Tao
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, Hunan, China
| | - Hong Zhong
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, Hunan, China
| | - Xiangbo Pan
- Changsha neptunus pharmaceutical co, ltd, China
| | - Peng Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| | - Lei Huang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
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26
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Karunanidhi D, Aravinthasamy P, Roy PD, Praveenkumar RM, Prasanth K, Selvapraveen S, Thowbeekrahman A, Subramani T, Srinivasamoorthy K. Evaluation of non-carcinogenic risks due to fluoride and nitrate contaminations in a groundwater of an urban part (Coimbatore region) of south India. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:102. [PMID: 31915929 DOI: 10.1007/s10661-019-8059-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
Groundwater quality investigations were carried out in one of the urban parts of south India for fluoride and nitrate contaminations, with special focus on human health risk assessment for the rapidly growing and increasingly industrialized Coimbatore City. Twenty-five groundwater samples were collected and analyzed for physico-chemical parameters (EC, pH, TDS, Ca2+, Mg2+, Na+, K+, Cl-, SO42-, HCO3-, PO43-, NO3-, and F-) and the piper diagram characterized 60% of them as Ca-Mg-Cl type. Analysis of fluoride (0.1 to 2.4 mg/l) shows that 32% of the groundwater samples contain F- over the permissible limit, affecting a region of 122.10 km2. Nitrate (0.1 to 148 mg/l) is over the permissible limit in 44% of the groundwater samples spread over an area of 429.43 km2. The total hazard indices (THI) of non-carcinogenic risk for children (0.21 to 4.83), women (0.14 to 3.35), and men (0.12 to 2.90) shows some of the THI values are above the permissible limit of the US Environmental Protection Agency. The THI-based non-carcinogenic risks are 60%, 52%, and 48% for children, women, and men. This investigation suggests higher health risk for children and also recommends that proper management plan should be adopted to improve the drinking water quality in this region in order to avoid major health issues in the near future.
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Affiliation(s)
- D Karunanidhi
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous),, Coimbatore, 641062, India.
| | - P Aravinthasamy
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous),, Coimbatore, 641062, India
| | - Priyadarsi D Roy
- Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, CP 04510, Ciudad de México, Mexico
| | - R M Praveenkumar
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous),, Coimbatore, 641062, India
| | - K Prasanth
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous),, Coimbatore, 641062, India
| | - S Selvapraveen
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous),, Coimbatore, 641062, India
| | - A Thowbeekrahman
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous),, Coimbatore, 641062, India
| | - T Subramani
- Department of Geology, Anna University, CEG Campus, Chennai, 600025, India
| | - K Srinivasamoorthy
- Department of Earth Sciences, Pondicherry University, Kalapet, Pondicherry, 605014, India
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27
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Shanker AS, Srinivasulu D, Pindi PK. A study on bioremediation of fluoride-contaminated water via a novel bacterium Acinetobacter sp. (GU566361) isolated from potable water. RESULTS IN CHEMISTRY 2020. [DOI: 10.1016/j.rechem.2020.100070] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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28
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Akafu T, Chimdi A, Gomoro K. Removal of Fluoride from Drinking Water by Sorption Using Diatomite Modified with Aluminum Hydroxide. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2019; 2019:4831926. [PMID: 31886021 PMCID: PMC6914935 DOI: 10.1155/2019/4831926] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/09/2019] [Accepted: 10/17/2019] [Indexed: 05/29/2023]
Abstract
Exposure to fluoride beyond the recommended level for longer duration causes both dental and skeletal fluorosis. Thus, the development of cost-effective, locally available, and environmentally benign adsorbents for fluoride removal from contaminated water sources is absolutely required. In the present study, diatomaceous earth (diatomite) locally available in Ethiopia, modified by treating it with an aluminum hydroxide solution, was used as an adsorbent for fluoride removal from aqueous solutions. Adsorption experiments were carried out by using batch contact method. The adsorbent was characterized using FT-IR spectroscopy. Effects of different parameters affecting efficiency of fluoride removal such as adsorbent dose, contact time, initial fluoride concentration, and pH were investigated and optimized. The optimum adsorbent dose, contact time, initial fluoride concentration, and pH values were 25 g/L, 180 min, 10 mg/L, and 6.7, respectively. The performance of the adsorbent was also tested under optimum conditions using groundwater samples taken from Hawassa and Ziway. Langmuir and Freundlich isotherm models were applied to describe the equilibrium data. Compared to Langmuir isotherm (R 2 = 0.888), the Freundlich isotherm (R 2 = 0.985) model was better fitted to describe the adsorption characteristics of fluoride on Al-diatomite. The Langmuir maximum adsorption capacity was 1.67 mg/g. The pseudosecond-order model was found to be more suitable than the pseudofirst-order to describe the adsorption kinetics. The low correlation coefficient value of R 2 = 0.596 for the intraparticle diffusion model indicates that the intraparticle diffusion model does not apply to the present studied adsorption system. The maximum fluoride removal was observed to be 89.4% under the optimum conditions which indicated that aluminum hydroxide-modified diatomite can be used as efficient, cheap, and ecofriendly adsorbents for the removal of fluoride from contaminated water.
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Affiliation(s)
- Tesfaye Akafu
- Wollega University, College of Natural and Computational Sciences, Department of Environmental Sciences, P.O. Box: 395, Nekemte, Ethiopia
| | - Achalu Chimdi
- Ambo University, College of Agriculture and Veterinary Sciences, Department of Natural Resource Management, P.O. Box: 19, Ambo, Ethiopia
| | - Kefyalew Gomoro
- Wollega University, College of Natural and Computational Sciences, Department of Chemistry, P.O. Box: 395, Nekemte, Ethiopia
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Song Y, Yuan P, Wei Y, Liu D, Tian Q, Zhou J, Du P, Deng L, Chen F, Wu H. Constructing Hierarchically Porous Nestlike Al2O3–MnO2@Diatomite Composite with High Specific Surface Area for Efficient Phosphate Removal. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05574] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yaran Song
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Peng Yuan
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Yanfu Wei
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, China
| | - Dong Liu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Qian Tian
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junming Zhou
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Peixin Du
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Liangliang Deng
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Fanrong Chen
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Institutions of Earth Science, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Honghai Wu
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, China
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Mondal P, Purkait MK. Preparation and characterization of novel green synthesized iron-aluminum nanocomposite and studying its efficiency in fluoride removal. CHEMOSPHERE 2019; 235:391-402. [PMID: 31271999 DOI: 10.1016/j.chemosphere.2019.06.189] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/23/2019] [Accepted: 06/25/2019] [Indexed: 06/09/2023]
Abstract
A novel green synthesized iron-aluminum nanocomposite was prepared and characterized by FESEM, FTIR, EDX, XRD, BET, DSC and TGA analysis. The clove extract acting as both reducing and surface coating agent was optimized based on its maximum total flavonoid content (TFC) and total polyphenolic content (TPC). Fluoride adsorption studies was performed at 298K, 303K and 313K within the range of 10-40 mg/L fluoride solution for kinetic and isotherm studies. Maximum adsorption capacity of 42.95 mg/g was obtained for 0.25 g/L adsorbent dosage. Moreover fluoride adsorption obeyed pseudo second order kinetic model whereas the process was multistage diffusion controlled. Langmuir isotherm model best fitted the equilibrium data with monolayer adsorption capacities of 25.09, 26.08 and 28.07 mg/g at 298, 303 and 313K respectively. The findings confirmed that the fluoride adsorption process followed ion exchange mechanism with the surface hydroxyl groups. The prepared nanocomposite was utilized for treating fluoride contaminated water samples from north-east regions of India which showed efficient removal percentage.
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Affiliation(s)
- Piyal Mondal
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
| | - Mihir Kumar Purkait
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
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31
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Ravulapalli S, Ravindhranath K. Novel adsorbents possessing cumulative sorption nature evoked from Al2O3 nanoflakes, C.urens seeds active carbon and calcium alginate beads for defluoridation studies. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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32
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Chaudhary M, Rawat S, Jain N, Bhatnagar A, Maiti A. Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium. Carbohydr Polym 2019; 216:140-148. [DOI: 10.1016/j.carbpol.2019.04.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 03/20/2019] [Accepted: 04/05/2019] [Indexed: 12/20/2022]
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33
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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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34
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Bhomick PC, Supong A, Karmaker R, Baruah M, Pongener C, Sinha D. Activated carbon synthesized from biomass material using single-step KOH activation for adsorption of fluoride: Experimental and theoretical investigation. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0234-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Chaudhry SA, Khan TA, Ali I. Adsorptive removal of Pb(II) and Zn(II) from water onto manganese oxide-coated sand: Isotherm, thermodynamic and kinetic studies. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ejbas.2016.06.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Saif A. Chaudhry
- Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
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36
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Kumari U, Behera SK, Meikap BC. A novel acid modified alumina adsorbent with enhanced defluoridation property: Kinetics, isotherm study and applicability on industrial wastewater. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:868-882. [PMID: 30497041 DOI: 10.1016/j.jhazmat.2018.11.064] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/15/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Excessive fluoride contamination in ground and surface water is hazardous to human health. Adsorptive removal is a better option for defluoridation due to its simplicity and efficient working property. In the current research, an attempt was made for the removal of fluoride ions from wastewater by a novel adsorbent synthesized with alumina and H2SO4 acid by acidic activation. The adsorbent was characterized for physio-chemical properties by several analytical methods (SEM, EDX, FTIR, XRF, TGA, XRD, HI and pHZPC). The specific surface area of acid activated alumina (AAA) adsorbent was found to be 87.44 m2/g. The batch scale experiments were conducted to study the effect of initial pH, adsorbent dose, stirring rate, and contact time on the defluoridation efficiency of AAA adsorbent. The experimental data of isotherm study was found to follow the Freundlich isotherm model. The maximum adsorption capacity of fluoride on AAA was 69.52 mg/g at 318 K. The nature of adsorption was found to be endothermic and spontaneous. The adsorption kinetic data followed the pseudo-second-order model. The fluoride removal efficiency of alumina with and without acid activation resulted in 96.72% and 63.58%, respectively. The regeneration capability, reusability, applicability on industrial effluent and economic value were investigated.
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Affiliation(s)
- Usha Kumari
- Department of Chemical Engineering, Indian Institute of Technology (IIT) Kharagpur, West Bengal 721302, India.
| | - Sushanta K Behera
- Department of Chemical Engineering, Indian Institute of Technology (IIT) Kharagpur, West Bengal 721302, India
| | - B C Meikap
- Department of Chemical Engineering, Indian Institute of Technology (IIT) Kharagpur, West Bengal 721302, India; Department of Chemical Engineering, School of Chemical Engineering, Howard College Campus, University of Kwazulu-Natal (UKZN), Durban 4041, South Africa
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37
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Lu K, Wang T, Zhai L, Wu W, Dong S, Gao S, Mao L. Adsorption behavior and mechanism of Fe-Mn binary oxide nanoparticles: Adsorption of methylene blue. J Colloid Interface Sci 2019; 539:553-562. [DOI: 10.1016/j.jcis.2018.12.094] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/18/2018] [Accepted: 12/26/2018] [Indexed: 01/17/2023]
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38
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Ghosh A, Paul S, Bhattacharya S, Sasikumar P, Biswas K, Ghosh UC. Calcium ion incorporated hydrous iron(III) oxide: synthesis, characterization, and property exploitation towards water remediation from arsenite and fluoride. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:4618-4632. [PMID: 30560530 DOI: 10.1007/s11356-018-3872-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Calcium ion-incorporated hydrous iron(III) oxide (CIHIO) samples have been prepared aiming investigation of efficiency enhancement on arsenic and fluoride adsorption of hydrous iron(III) oxide (HIO). Characterization of the optimized product with various analytical tools confirms that CIHIO is microcrystalline and mesoporous (pore width, 26.97 Å; pore diameter, 27.742 Å with pore volume 0.18 cm3 g-1) material. Increase of the BET surface area (> 60%) of CIHIO (269.61 m2 g-1) relative to HIO (165.6 m2 g-1) is noticeable. CIHIO particles are estimated to be ~ 50 nm from AFM and TEM analyses. Although the pH optimized for arsenite and fluoride adsorptions are different, the efficiencies of CIHIO towards their adsorption are very good at pH 6.5 (pHzpc). The adsorption kinetics and equilibrium data of either tested species agree well, respectively, with pseudo-second order model and Langmuir monolayer adsorption phenomenon. Langmuir capacities (mg g-1at 303 K) estimated are 29.07 and 25.57, respectively, for arsenite and fluoride. The spontaneity of adsorption reactions (ΔG0 = - 18.02 to - 20.12 kJ mol-1 for arsenite; - 0.2523 to - 3.352 kJ mol-1 for fluoride) are the consequence of entropy parameter. The phosphate ion (1 mM) compared to others influenced adversely the arsenite and/or fluoride adsorption reactions. CIHIO (2.0 g L-1) is capable to abstract arsenite or fluoride above 90% from their solution (0 to 5.0 mg L-1). Mechanism assessment revealed that the adsorption of arsenite occurs via chelation, while of fluoride occurs with ion-exchange.
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Affiliation(s)
- Abir Ghosh
- Department of Chemistry, Maharaja Manindra Chandra College, Kolkata, India
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Suparna Paul
- Department of Chemistry, National Institute of Technology, Durgapur, India
- CSIR-Central Mechanical Engineering research institute, Durgapur, India
| | - Sayan Bhattacharya
- School of Ecology and Environmental Studies, Nalanda University, Rajgir, Bihar, India
| | - Palani Sasikumar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Krishna Biswas
- Department of Chemistry, Maharaja Manindra Chandra College, Kolkata, India.
| | - Uday Chand Ghosh
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India.
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39
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Das D. Structural Diversity in Heterobimetallic Complexes of Alkaline Earth Metals and Molybdenum, and Selective Dye Adsorption Properties of Mixed Metal Oxides Synthesized from the Heterobimetallic Complexes. ChemistrySelect 2019. [DOI: 10.1002/slct.201803514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dhiraj Das
- Department of Chemical Sciences; Indian Institute of Science Education and Research, Mohali,Knowledge, city, Sector-81, S.A.S. Nagar; Manauli PO 140306 India
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40
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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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41
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Khandare D, Mukherjee S. A Review of Metal oxide Nanomaterials for Fluoride decontamination from Water Environment. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.matpr.2019.06.575] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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42
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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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43
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Jung KW, Choi BH, Lee SY, Ahn KH, Lee YJ. Green synthesis of aluminum-based metal organic framework for the removal of azo dye Acid Black 1 from aqueous media. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Naga Babu A, Reddy DS, Kumar GS, Ravindhranath K, Krishna Mohan GV. Removal of lead and fluoride from contaminated water using exhausted coffee grounds based bio-sorbent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 218:602-612. [PMID: 29715669 DOI: 10.1016/j.jenvman.2018.04.091] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/18/2018] [Accepted: 04/21/2018] [Indexed: 05/25/2023]
Abstract
Water pollution by industrial and anthropogenic actives has become a serious threat to the environment. World Health Organization (WHO) has identified that lead and fluoride amid the environmental pollutants are most poisonous water contaminants with devastating impact on the human race. The present work proposes a study on economical bio-adsorbent based technique using exhausted coffee grounds in the removal of lead and fluoride contaminants from water. The exhausted coffee grounds gathered from industrial wastes have been acid-activated and examined for their adsorption capacity. The surface morphology and elemental characterization of pre-and-post adsorption operations by FESEM, EDX and FTIR spectral analysis confirmed the potential of the exhausted coffee ground as successful bio-sorbent. However, thermodynamic analysis confirmed the adsorption to be spontaneous physisorption with Langmuir mode of homogenous monolayer deposition. The kinetics of adsorption is well defined by pseudo second order model for both lead and fluoride. A significant quantity of lead and fluoride is removed from the synthetic contaminated water by the proposed bio-sorbent with the respective sorption capabilities of 61.6 mg/g and 9.05 mg/g. However, the developed bio-sorbent is also recyclable and is capable of removing the lead and fluoride from the domestic and industrial waste-water sources with an overall removal efficiency of about 90%.
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Affiliation(s)
- A Naga Babu
- Department of Chemistry, KLEF, Guntur, Andhra Pradesh, 522502, India
| | - D Srinivasa Reddy
- Department of Petroleum Engineering, KLEF, Guntur, Andhra Pradesh, 522502, India
| | - G Suresh Kumar
- Petroleum Engineering Program, Department of Ocean Engineering, IIT Madras, Chennai, Tamil Nadu, 600036, India
| | - K Ravindhranath
- Department of Chemistry, KLEF, Guntur, Andhra Pradesh, 522502, India
| | - G V Krishna Mohan
- Department of Chemistry, KLEF, Guntur, Andhra Pradesh, 522502, India.
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45
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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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46
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Yadav KK, Gupta N, Kumar V, Khan SA, Kumar A. A review of emerging adsorbents and current demand for defluoridation of water: Bright future in water sustainability. ENVIRONMENT INTERNATIONAL 2018; 111:80-108. [PMID: 29190529 DOI: 10.1016/j.envint.2017.11.014] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 11/17/2017] [Accepted: 11/18/2017] [Indexed: 06/07/2023]
Abstract
Fluoride contamination of groundwater is a serious problem in several countries of the world because of the intake of excessive fluoride caused by the drinking of the contaminated groundwater. Geological and anthropogenic factors are responsible for the contamination of groundwater with fluoride. Excess amounts of fluoride in potable water may cause irreversible demineralisation of bone and tooth tissues, a condition called fluorosis, and long-term damage to the brain, liver, thyroid, and kidney. There has long been a need for fluoride removal from potable water to make it safe for human use. From among several defluoridation technologies, adsorption is the technology most commonly used due to its cost-effectiveness, ease of operation, and simple physical process. In this paper, the adsorption capacities and fluoride removal efficiencies of different types of adsorbents are compiled from relevant published data available in the literature and represented graphically. The most promising adsorbents tested so far from each category of adsorbents are also highlighted. There is still a need to discover the actual feasibility of usage of adsorbents in the field on a commercial scale and to define the reusability of adsorbents to reduce cost and the waste produced from the adsorption process. The present paper reviews the currently available methods and emerging approaches for defluoridation of water.
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Affiliation(s)
- Krishna Kumar Yadav
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India.
| | - Neha Gupta
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India.
| | - Vinit Kumar
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India
| | - Shakeel Ahmad Khan
- Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi 110012, India
| | - Amit Kumar
- Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi 110012, India
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47
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Dubey S, Agrawal M, Gupta AB. Advances in coagulation technique for treatment of fluoride-contaminated water: a critical review. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0043] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Fluoride contamination of groundwater has become a major concern worldwide, resulting in serious medical conditions such as dental and skeletal fluorosis. Consequently, the WHO recommends that drinking water should not contain more than 1.5 mg/l of fluoride. Various defluoridation techniques such as coagulation, reverse osmosis, activated alumina adsorption, and biosorbent adsorption have been developed. Adsorption through the activated alumina and biosorbent process is not cost effective and has regeneration problems, and the reverse osmosis process has the high initial cost which makes it unacceptable for developing countries. Coagulation is a commonly employed field technology for defluoridation, which involves the addition of aluminum salts, lime, and bleaching powder followed by rapid mixing, flocculation, sedimentation, and filtration but suffers from a limitation of high residual aluminum in treated water. This paper critically reviews the recent developments in the coagulation technique for defluoridation along with its comparison to other defluoridation techniques. The review describes the pertinent gaps in the process and throws open suggestions for extending research by citing the recent studies which may lead to the revival of the process. The description about the suspension of alumino-fluoro complexes that constitute a substantial part of the residual aluminum after alum treatment has been narrated in the paper that helps in a deeper understanding of the defluoridation mechanism. To make the process highly suitable for communities, appropriate technological interventions, such as converting it to a continuous mode of operation, replacing alum with poly-aluminum chloride (PAC), and attaching a micro-filtration unit in series of the existing process, can be done. Also, using PAC as a coagulant with sand filtration has to be considered for making the process more efficient.
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Affiliation(s)
- Swati Dubey
- Department of Chemical Engineering , Malaviya National Institute of Technology , Jaipur 30201 , India
| | - Madhu Agrawal
- Department of Chemical Engineering , Malaviya National Institute of Technology , Jaipur 30201 , India
| | - Akhilendra Bhushan Gupta
- Department of Civil Engineering , Malaviya National Institute of Technology , Jaipur 30201 , India
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48
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Enhanced fluoride removal by La-doped Li/Al layered double hydroxides. J Colloid Interface Sci 2018; 509:353-359. [DOI: 10.1016/j.jcis.2017.09.038] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/06/2017] [Accepted: 09/07/2017] [Indexed: 11/22/2022]
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A Comparative Study on Removal of Hazardous Anions from Water by Adsorption: A Review. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2018. [DOI: 10.1155/2018/3975948] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
This paper presents a comparative review of arsenite (As(III)), arsenate (As(V)), and fluoride (F−) for a better understanding of the conditions and factors during their adsorption with focus on (i) the isotherm adsorption models, (ii) effects of pH, (iii) effects of ionic strength, and (iv) effects of coexisting substances such as anions, cations, and natural organics matter. It provides an in-depth analysis of various methods of arsenite (As(III)), arsenate (As(V)), and fluoride (F-) removal by adsorption and the anions’ characteristics during the adsorption process. The surface area of the adsorbents does not contribute to the adsorption capacity of these anions but rather a combination of other physical and chemical properties. The adsorption capacity for the anions depends on the combination of all the factors: pH, ionic strength, coexisting substances, pore volume and particles size, surface modification, pretreatment of the adsorbents, and so forth. Extreme higher adsorption capacity can be obtained by the modification of the adsorbents. In general, pH has a greater influence on adsorption capacity at large, since it affects the ionic strength, coexisting anions such as bicarbonate, sulfate, and silica, the surface charges of the adsorbents, and the ionic species which can be present in the solution.
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Jasni MJF, Arulkumar M, Sathishkumar P, Mohd Yusoff AR, Buang NA, Gu FL. Electrospun nylon 6,6 membrane as a reusable nano-adsorbent for bisphenol A removal: Adsorption performance and mechanism. J Colloid Interface Sci 2017; 508:591-602. [DOI: 10.1016/j.jcis.2017.08.075] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/18/2017] [Accepted: 08/22/2017] [Indexed: 12/07/2022]
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