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El Messaoudi N, Franco DSP, Gubernat S, Georgin J, Şenol ZM, Ciğeroğlu Z, Allouss D, El Hajam M. Advances and future perspectives of water defluoridation by adsorption technology: A review. ENVIRONMENTAL RESEARCH 2024; 252:118857. [PMID: 38569334 DOI: 10.1016/j.envres.2024.118857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/05/2024]
Abstract
Fluoride contamination in water sources poses a significant challenge to human health and the environment. In recent years, adsorption technology has emerged as a promising approach for water defluoridation due to its efficiency and cost-effectiveness. This review article comprehensively explores the advances in water defluoridation through adsorption processes. Various adsorbents, including natural and synthetic materials, have been investigated for their efficacy in removing fluoride ions from water. The mechanisms underlying adsorption interactions are elucidated, shedding light on the factors influencing defluoridation efficiency. Moreover, the review outlines the current state of technology, highlighting successful case studies and field applications. Future perspectives in the field of water defluoridation by adsorption are discussed, emphasizing the need for sustainable and scalable solutions. The integration of novel materials, process optimization, and the development of hybrid technologies are proposed as pathways to address existing challenges and enhance the overall efficacy of water defluoridation. This comprehensive assessment of the advances and future directions in adsorption-based water defluoridation provides valuable insights for researchers, policymakers, and practitioners working towards ensuring safe and accessible drinking water for all.
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Affiliation(s)
- Noureddine El Messaoudi
- Laboratory of Applied Chemistry and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, 80000, Morocco.
| | - Dison Stracke Pfingsten Franco
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia
| | - Sylwia Gubernat
- Inżynieria Rzeszów S.A., ul. Podkarpacka 59A, 35-082, Rzeszów, Poland
| | - Jordana Georgin
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia.
| | - Zeynep Mine Şenol
- Sivas Cumhuriyet University, Faculty of Health Sciences, Department of Nutrition and Diet, 58140, Sivas, Turkey
| | - Zeynep Ciğeroğlu
- Department of Chemical Engineering, Faculty of Engineering and Natural Sciences, Usak University, Usak, 64300, Turkey
| | - Dalia Allouss
- Laboratory of Materials, Catalysis & Valorization of Natural Resources, FSTM, Hassan II University, Casablanca, Morocco
| | - Maryam El Hajam
- Advanced Structures and Composites Center, University of Maine, Orono, 04469, United States
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Li S, Song M, Tong L, Ye C, Yang Y, Zhou Q. Enhancing fluoride removal from wastewater using Al/Y amended sludge biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:125832-125845. [PMID: 38006482 DOI: 10.1007/s11356-023-31147-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
This study explored the potential of utilizing aluminum and yttrium amended (Al/Y amended) sewage sludge biochar (Al/Y-CSBC) for efficient fluoride removal from wastewater. The adsorption kinetics of fluoride on bimetallic modified Al/Y-CSBC followed the pseudo-second-order model, while the adsorption isotherm conformed to the Freundlich equation. Remarkably, the material exhibited excellent fluoride removal performance over a wide pH range, achieving a maximum adsorption capacity of 62.44 mg·g-1. Moreover, Al/Y-CSBC demonstrated exceptional reusability, maintaining 95% removal efficiency even after six regeneration cycles. The fluoride adsorption mechanism involved ion exchange, surface complexation, and electrostatic adsorption interactions. The activation and modification processes significantly increased the specific surface area of Al/Y-CSBC, leading to a high isoelectric point (pHpzc = 9.14). The incorporation of aluminum and yttrium metals exhibited a novel approach, enhancing the adsorption capacity for fluoride ions due to their strong affinity. Furthermore, the dispersing effect of biochar played a crucial role in improving defluoridation efficiency by enhancing accessibility to active sites. These findings substantiate the significant potential of Al/Y-CSBC for enhanced fluoride removal from wastewater.
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Affiliation(s)
- Shushu Li
- School of Public Health, Nantong University, 9 Seyuan Road, Jiangsu, 226019, China
| | - Mingshan Song
- School of Public Health, Nantong University, 9 Seyuan Road, Jiangsu, 226019, China
| | - Lin Tong
- School of Public Health, Nantong University, 9 Seyuan Road, Jiangsu, 226019, China
| | - Changqing Ye
- School of Public Health, Nantong University, 9 Seyuan Road, Jiangsu, 226019, China.
| | - Yuhuan Yang
- School of Public Health, Nantong University, 9 Seyuan Road, Jiangsu, 226019, China
| | - Qingwen Zhou
- School of Public Health, Nantong University, 9 Seyuan Road, Jiangsu, 226019, China
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Kiprono P, Kiptoo J, Nyawade E, Ngumba E. Iron functionalized silica particles as an ingenious sorbent for removal of fluoride from water. Sci Rep 2023; 13:8018. [PMID: 37198268 DOI: 10.1038/s41598-023-34357-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/28/2023] [Indexed: 05/19/2023] Open
Abstract
The paucity of safe drinking water remains a global concern. Fluoride is a pollutant prevalent in groundwater that has adverse health effects. To resolve this concern, we devised a silica-based defluoridation sorbent from pumice rock obtained from the Paka volcano in Baringo County, Kenya. The alkaline leaching technique was used to extract silica particles from pumice rock, which were subsequently modified with iron to enhance their affinity for fluoride. To assess its efficacy, selected borehole water samples were used. Scanning electron microscopy, X-ray diffraction, Fourier transform infrared and X-ray fluorescence spectroscopy was used to characterize the sorbent. The extracted silica particles were 96.71% pure and amorphous, whereas the iron-functionalized silica particles contained 93.67% SiO2 and 2.93% Fe2O3. The optimal pH, sorbent dose and contact time for defluoridation of a 20 mg/L initial fluoride solution were 6, 1 g and 45 min, respectively. Defluoridation followed pseudo-second-order kinetics and fitted Freundlich's isotherm. Fluoride levels in borehole water decreased dramatically; Intex 4.57-1.13, Kadokoi 2.46-0.54 and Naudo 5.39-1.2 mg/L, indicating that the silica-based sorbent developed from low-cost, abundant and locally available pumice rock is efficient for defluoridation.
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Affiliation(s)
- Paul Kiprono
- Department of Chemistry, School of Mathematics and Physical Sciences, Jomo Kenyatta University of Agriculture and Technology, P.O Box 62000-00200, Nairobi, Kenya.
| | - Jackson Kiptoo
- Department of Chemistry, School of Mathematics and Physical Sciences, Jomo Kenyatta University of Agriculture and Technology, P.O Box 62000-00200, Nairobi, Kenya
| | - Eunice Nyawade
- Department of Chemistry, School of Mathematics and Physical Sciences, Jomo Kenyatta University of Agriculture and Technology, P.O Box 62000-00200, Nairobi, Kenya
| | - Elijah Ngumba
- Department of Chemistry, School of Mathematics and Physical Sciences, Jomo Kenyatta University of Agriculture and Technology, P.O Box 62000-00200, Nairobi, Kenya
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Saravanakumar K, Sathiyaseelan A, Zhang X, Choi M, Wang MH. Bimetallic (Ag and MgO) nanoparticles, Aloe vera extracts loaded xanthan gum nanocomposite for enhanced antibacterial and in-vitro wound healing activity. Int J Biol Macromol 2023; 242:124813. [PMID: 37172699 DOI: 10.1016/j.ijbiomac.2023.124813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/11/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
We prepared nanocomposite (XG-AVE-Ag/MgO NCs) using the bimetallic Ag/MgO NPs, Aloe vera extract (AVE), and biopolymer (Xanthan gum (XG)) to archive a synergetic antibacterial and wound healing activity. The changes in XRD peaks at 20° of XG-AVE-Ag/MgO NCs indicated the XG encapsulation. The XG-AVE-Ag/MgO NCs showed the zeta potential and zeta size of 151.3 ± 3.14 d·nm and -15.2 ± 1.08 mV with a PDI of 0.265 while TEM showed an average size of 61.19 ± 3.89. The EDS confirmed the co-existence of Ag, Mg, carbon, oxygen, and nitrogen in NCs. XG-AVE-Ag/MgO NCs displayed higher antibacterial activity in terms of zone of inhibition, at 15.00 ± 0.12 mm for B. cereus and 14.50 ± 0.85 mm for E. coli. Moreover, NCs exhibited MICs of 2.5 μg/mL for E. coli, and 0.62 μg/mL for B. cereus. The in vitro cytotoxicity and hemolysis assays indicated the non-toxic properties of XG-AVE-Ag/MgO NCs. The higher wound closure activity was observed with the treatment of XG-AVE-Ag/MgO NCs (91.19 ± 1.87 %) compared to the control, untreated group (68.68 ± 3.54 %) at 48 h of incubation. These findings revealed that XG-AVE-Ag/MgO NCs was promising non-toxic, antibacterial, and wound-healing agent that deserved further in-vivo studies.
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Affiliation(s)
- Kandasamy Saravanakumar
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Anbazhagan Sathiyaseelan
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Xin Zhang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Miri Choi
- Chuncheon Center, Korea Basic Science Institute, Chuncheon, South Korea
| | - Myeong-Hyeon Wang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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Gitari WM, Obijole OA, Mudzielwana R. Synthesis of porous hydroxysodalite from aluminosilicate rich clay soils: application towards fluoride and pathogen removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:22483-22493. [PMID: 36301389 DOI: 10.1007/s11356-022-23575-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
This article discussed the potential application of hydrothermally synthesized porous hydroxysodalite material synthesized from aluminosilicate clay material as a multifunctional adsorbent for fluoride and pathogen removal from groundwater. The efficiency of the material towards fluoride removal was evaluated using batch experiments while the efficacy against the E. coli strain was evaluated using well-assay diffusion method. The material showed a maximum fluoride adsorption capacity of 6.01 mg/g at initial concentration range of 5 to 100 mg/L when 1 g/100 mL adsorbent dosage was used at initial pH of 6 ± 0.5 after agitation time of 10 min. The adsorption kinetics data fitted better to pseudo first order of reaction kinetics indicating the dominance of physiosorption adsorption mechanism while the adsorption isotherm data showed better fit to both Langmuir and Freundlich adsorption isotherm model confirming monolayer and multilayer adsorption. The material was successfully regenerated and reused for up to eight successive regeneration-reuse cycles. However, its efficiency was inhibited by the presence of Cl- and CO32-. The material also proven to have antimicrobial activity against E. coli strain. This study concluded that the porous hydroxysodalite material prepared in this study can be used as a multifunctional adsorbent for fluoride and pathogen removal from groundwater.
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Affiliation(s)
- Wilson Mugera Gitari
- Department of Geography and Environmental Sciences, Faculty of Science, Engineering and Agriculture, Environmental Remediation and Nano Science Research Group (ENVIREN), University of Venda, Thohoyandou, South Africa.
- School of Chemistry and Material Sciences, Technical University of Kenya, P.O. Box 52428 Haile Selassie Avenue, 00200, Nairobi, Kenya.
| | - Olumuyiwa Adewale Obijole
- Department of Geography and Environmental Sciences, Faculty of Science, Engineering and Agriculture, Environmental Remediation and Nano Science Research Group (ENVIREN), University of Venda, Thohoyandou, South Africa
| | - Rabelani Mudzielwana
- Department of Geography and Environmental Sciences, Faculty of Science, Engineering and Agriculture, Environmental Remediation and Nano Science Research Group (ENVIREN), University of Venda, Thohoyandou, South Africa
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Wan K, Huang L, Yan J, Ma B, Huang X, Luo Z, Zhang H, Xiao T. Removal of fluoride from industrial wastewater by using different adsorbents: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 773:145535. [PMID: 33588221 DOI: 10.1016/j.scitotenv.2021.145535] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
Many industries such as iron and steel metallurgy, copper and zinc smelting, the battery industry, and cement manufacturing industries discharge high concentrations of fluoride-containing wastewater into the environment. Subsequently, the discharge of high fluoride effluent serves as a threat to human life as well as the ecological ability to sustain life. This article analyses the advantages and drawbacks of some fluoride remediation technologies such as precipitation and flocculation, membrane technology, ion exchange technology, and adsorption technology. Among them, adsorption technology is considered the obvious choice and the best applicable technology. As such, several adsorbents with high fluoride adsorption capacity such as modified alumina, metal oxides, biomass, carbon-based materials, metal-organic frameworks, and other adsorption materials including their characteristics have been comprehensively summarized. Additionally, different adsorption conditions of the various adsorbents, such as pH, temperature, initial fluoride concentration, and contact time have been discussed in detail. The study found out that the composite synergy between different materials, morphological and structural control, and the strengthening of their functional groups can effectively improve the ability of the adsorbents for removing fluoride. This study has prospected the direction of various adsorbents for removing fluoride in wastewater, which would serve as guiding significance for future research in the field.
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Affiliation(s)
- Kuilin Wan
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Lei Huang
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Jia Yan
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Boyan Ma
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Xuanjie Huang
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Zhixuan Luo
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Hongguo Zhang
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, PR China.
| | - Tangfu Xiao
- Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
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