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Jeyaseelan A, Viswanathan N, Kumar IA, Naushad M. Design of hydrotalcite and biopolymers entrapped tunable cerium organic cubic hybrid material for superior fluoride adsorption. Colloids Surf B Biointerfaces 2023; 224:113190. [PMID: 36764205 DOI: 10.1016/j.colsurfb.2023.113190] [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: 11/15/2022] [Revised: 01/25/2023] [Accepted: 01/31/2023] [Indexed: 02/04/2023]
Abstract
The excess fluoride in drinking water is serious risk which leads to fluorosis. The adsorption method is facile route for defluoridation studies. Hybrid adsorbent possesses unique advantages like high surface area and high stability has been employed for water treatment. In the present work, hydrotalcite (HT) fabricated Ce-metal organic frameworks (MOFs) bridged with biopolymers (alginate and chitosan) namely HT-CeMOFs@Alg-CS cubic hybrid beads was developed and employed towards fluoride removal in batch mode. The fabricated HT-CeMOFs@Alg-CS beads were analyzed by DTA, FTIR, SEM, EDAX, TGA and XRD studies. Besides, FTIR and EDAX proved the affinity of HT-CeMOFs@Alg-CS cubic hybrid beads on fluoride was majorly attributed by electrostatic interaction, ion-exchange and complexation mechanism. To include detail insight into adsorption route; the kinetics, thermodynamic and isotherm studies were investigated for fluoride adsorption. The equilibrium data of HT-CeMOFs@Alg-CS cubic hybrid beads for fluoride adsorption was fitted with Langmuir isotherm model. Thermodynamic investigation results demonstrated that the fluoride adsorption was spontaneous with endothermic nature. The regeneration and field investigation results revealed that the developed HT-CeMOFs@Alg-CS cubic hybrid beads are reusable and more apt at field environment.
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Affiliation(s)
- Antonysamy Jeyaseelan
- Department of Chemistry, Anna University, University College of Engineering, Dindigul, Reddiyarchatram, Dindigul 624 622, Tamilnadu, India
| | - Natrayasamy Viswanathan
- Department of Chemistry, Anna University, University College of Engineering, Dindigul, Reddiyarchatram, Dindigul 624 622, Tamilnadu, India.
| | - Ilango Aswin Kumar
- Faculty of Civil Engineering, Department of Landscape and Water Conservation, Czech Technical University in Prague, Thakurova 7, 166 29 Prague 6, Czech Republic
| | - Mu Naushad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Wang DC, Xu MD, Jin Z, Xiao YF, Chao Y, Li J, Chen SH, Ding Y. Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1082. [PMID: 36985976 PMCID: PMC10051765 DOI: 10.3390/nano13061082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/13/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
In the present work, the porous MgO nanosheet-modified activated carbon fiber felt (MgO@ACFF) was prepared for fluoride removal. The MgO@ACFF was characterized by XRD, SEM, TEM, EDS, TG, and BET. The fluoride adsorption performance of MgO@ACFF also has been investigated. The adsorption rate of the MgO@ACFF toward fluoride is fast; more than 90% of the fluoride ions can be adsorbed within 100 min, and the adsorption kinetics of MgO@ACFF can be fitted in a pseudo-second-order model. The adsorption isotherm of MgO@ACFF fitted well in the Freundlich model. Additionally, the fluoride adsorption capacity of MgO@ACFF is larger than 212.2 mg/g at neutral. In a wide pH range of 2-10, the MgO@ACFF can efficiently remove fluoride from water, which is meaningful for practical usage. The effect of co-existing anions on the fluoride removal efficiency of the MgO@ACFF also has been studied. Furthermore, the fluoride adsorption mechanism of the MgO@ACFF was studied by the FTIR and XPS, and the results reveal a hydroxyl and carbonate co-exchange mechanism. The column test of the MgO@ACFF also has been investigated; 505-bed volumes of 5 mg/L fluoride solution can be treated with effluent under 1.0 mg/L. It is believed that the MgO@ACFF is a potential candidate for a fluoride adsorbent.
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Affiliation(s)
- De-Cai Wang
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Min-Da Xu
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Zhen Jin
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Yi-Fan Xiao
- School of Environment and Energy Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Yang Chao
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Jie Li
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Shao-Hua Chen
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
| | - Yi Ding
- Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, China
- School of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, China
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Sadhu M, Padmaja Sudhakar P. Lanthanum cholate Fibres: A novel adsorbent for fluoride removal. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Mahajan T, Paikaray S. Fluoride retention kinetic and equilibrium studies on layered double hydroxides under ambient conditions: Implications on pond-stream-hot spring-well water remediation. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2022; 94:e10804. [PMID: 36346371 DOI: 10.1002/wer.10804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/19/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
Fluoride deficiency and toxicity severely affect a large population globally. Hence, a low-cost geosorbent is in demand to overcome fluorosis hazards where in situ retardation is prioritized over pilot-scale waste water treatment. This study reports the fluoride removal potential of MgFe-type layered double hydroxide (HT-LDH) and its calcined form at 500 and 800°C for their usability for treatment of polluted streams, ponds, wells, and hot spring water. Rapid uptake with >33% removal in 24 h was found by the adsorptive method, whereas the co-precipitation process removed >16 mg/L (>83%) in 1 h. The efficiency was further enhanced upon calcination at 500°C with >95% removal up to five times regeneration, unlike that at 800°C. It was demonstrated that multilayer sorption onto heterogeneous surface sites is majorly controlled by surface adsorptive and ion exchange mechanisms. Acidic pH, low aqueous F - , and temperature >25°C favored greater uptake, whereas competitive anions slightly enhanced its potential in the order N O 3 - > S O 4 2 - > P O 4 3 - in adsorptive removal. In the co-precipitation process, competing anions slightly hindered F - retention, whereas high temperature and low aqueous F - led to greater F - retention. No F-bearing solid phases were evidenced upon its retention, except lowering the HT-LDH crystallinity and rearrangement of C O 3 2 - surface functional groups. The fluoride contents of natural water were lowered drastically up to 77% in 60 min upon precipitation of HT-LDH by maintaining alkalinity and a di-/trivalent cationic ratio of 2.0. PRACTITIONER POINTS: F^- uptake is rapid on heterogeneous surface sites with multilayer sorption mechanism Greater F^- removed by coprecipitation technique compared with adsorptive pathway Acidic medium and temperature >25°C favor greater F^- retention NO_3^-+PO_l4^(3-) slightly enhanced F^- uptake by adsorption but lowered in coprecipitation Formation of LDH from natural waters lowered F^- content up to <77.
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Affiliation(s)
- Tanuj Mahajan
- Environmental Geochemistry Group, Department of Geology, Panjab University, Chandigarh, India
| | - Susanta Paikaray
- Environmental Geochemistry Group, Department of Geology, Panjab University, Chandigarh, India
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Wei Y, Wang L, Li H, Yan W, Feng J. Synergistic Fluoride Adsorption by Composite Adsorbents Synthesized From Different Types of Materials—A Review. Front Chem 2022; 10:900660. [PMID: 35601557 PMCID: PMC9114667 DOI: 10.3389/fchem.2022.900660] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 04/07/2022] [Indexed: 12/21/2022] Open
Abstract
The reduction of fluoride concentrations in water is one of many concerns. Adsorption is the most widely used technology for fluoride removal and the center to development of adsorption technology is the improvement of adsorbents. This review classifies the typical fluoride removal adsorbents into four types: metal oxides/hydroxides, biopolymers, carbon-based, and other adsorbents. The exploitation of new materials and the synthesis of composite materials are two ways of developing new adsorbents. In comparison to the discovery of novel adsorbents for fluoride adsorption, research into the composite synthesis of different types of conventional adsorbents has proliferated in recent years. The traditional adsorbents used the earliest, metal oxides, can act as active centers in a wide range of applications for modifying and compounding with other types of adsorbents. This study emphasizes reviewing the research on fluoride removal by composite adsorbents synthesized from different types of metal-modified materials. Seven factors were compared in terms of material characterization, initial fluoride concentration, adsorbent dose, pH, temperature, reaction time, and maximum adsorption capacity. The modification of composite adsorbents is facile and the synergistic effect of the different types of adsorbents significantly improves fluoride adsorption capacity. Metal composite adsorbents are synthesized by facile coprecipitation, hydrothermal, or impregnation modification methods. The adsorption mechanisms involve electrostatic attraction, ion exchange, complexation, and hydrogen bonding. The fluoride adsorption capacity of composite adsorbents has generally improved, indicating that most modifications are successful and have application prospects. However, to achieve significant breakthroughs in practical applications, numerous issues such as cost, separation/regeneration performance, and safety still need to be considered.
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Li K, Li S, Li Q, Liu H, Yao W, Wang Q, Chai L. Design of a high-performance ternary LDHs containing Ni, Co and Mn for arsenate removal. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:127865. [PMID: 34848069 DOI: 10.1016/j.jhazmat.2021.127865] [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: 09/29/2021] [Revised: 11/15/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
To cope with the current serious arsenate pollution problem, a new ternary layered double hydroxides (LDHs) containing Ni, Co and Mn with good performance was developed, guiding by DFT calculations. First, Ni, Co and Mn were screened as the metal sources to constitute the LDHs, due to their high ionic charge density. Then, Ni(II), Co(II) and Mn(III)-O octahedra were selected as the primary units for structuring the LDHs, because of their good chemical activity. Meanwhile, the ratio of metals in the ternary LDHs, favoring for arsenate removal, was optimized at 1:2:1. In addition, the synergistic effect among various metals in the LDHs was considered. The results suggested that in the case of single doping, all three metals can act as the center to promote chemical activity independently. On the contrary, when combined together, there is only one unilateral active center. Moreover, the existence of ligand covalent bonds between arsenate and LDHs was confirmed. Finally, a promising new NiCo2Mn-LDHs with the maximum adsorption capacity of 407.23 mg/g for arsenate removal had been prepared.
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Affiliation(s)
- Kaizhong Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Shuimei Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Qingzhu Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China.
| | - Hui Liu
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China
| | - Wenming Yao
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Qingwei Wang
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China
| | - Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China
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Dudek S, Kołodyńska D. Arsenic(V) removal on the lanthanum-modified ion exchanger with quaternary ammonium groups based on iron oxide. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li X, Yu X, Liu L, Yang J, Liu S, Zhang T. Preparation, characterization serpentine-loaded hydroxyapatite and its simultaneous removal performance for fluoride, iron and manganese. RSC Adv 2021; 11:16201-16215. [PMID: 35479140 PMCID: PMC9031825 DOI: 10.1039/d1ra02028e] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 04/26/2021] [Indexed: 01/30/2023] Open
Abstract
Aiming at the problem of excessive fluorine, iron, and manganese pollution in groundwater in mining areas, a serpentine-loaded hydroxyapatite (Srp/HAP) composite adsorbent was prepared by wet chemical coprecipitation. The preparation conditions of the Srp/HAP composite adsorbent were explored, Srp/HAP was microscopically characterized, and the adsorption performance and adsorption mechanism of the Srp/HAP composite adsorbent for F−, Fe2+ and Mn2+ were analyzed. The results showed that the optimal preparation conditions for the composite particles were as follows: solid–liquid ratio of Srp to calcium nitrate solution 20%, aging time 20 h, calcination temperature 180 °C, and calcination time 90 min. Compact Srp/HAP composite adsorbent particles were successfully prepared, and both the lamellar crimp structure of the Srp surface and the problem of HAP surface agglomeration were resolved. After loading, the specific surface area and pore volume of the particles significantly increased, and the surface pore structure improved, which is conducive to the simultaneous adsorption and removal of fluorine, iron and manganese. The optimal reaction conditions for Srp/HAP treatment of composite water samples with F−, Fe2+ and Mn2+ mass concentrations of 5 mg L−1, 20 mg L−1 and 5 mg L−1, respectively, are as follows: dosage of Srp/HAP 3 g L−1, pH 7, temperature 35 °C, and reaction time 150 min. Under these conditions, the removal rates of F−, Fe2+ and Mn2+ were 98.6%, 99.9% and 99.8%, respectively. The quasi-second-order kinetic model and Langmuir isothermal adsorption model described the adsorption process of F−, Fe2+ and Mn2+ by the composite particles well. The adsorption process includes both surface physical adsorption and chemical adsorption. Chemical adsorption is mainly characterized by ion exchange and surface complexation. The Srp/HAP composite particles can be used as an excellent adsorbent for the treatment of groundwater containing fluorine, iron and manganese ions in mining areas. A new adsorbent Srp/HAP for simultaneous removal of fluoride, iron and manganese was prepared, characterized and analyzed.![]()
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Affiliation(s)
- Xilin Li
- School of Civil Engineering, Liaoning Technical University No. 88 Yulong Road Fuxin Liaoning Province 123000 China
| | - Xiaowan Yu
- School of Civil Engineering, Liaoning Technical University No. 88 Yulong Road Fuxin Liaoning Province 123000 China
| | - Ling Liu
- School of Civil Engineering, Liaoning Technical University No. 88 Yulong Road Fuxin Liaoning Province 123000 China
| | - Jianlin Yang
- School of Materials Science and Engineering, Liaoning Technical University No. 47 Zhonghua Road Fuxin Liaoning Province 123000 China
| | - Siyuan Liu
- School of Civil Engineering, Liaoning Technical University No. 88 Yulong Road Fuxin Liaoning Province 123000 China
| | - Tianyi Zhang
- School of Civil Engineering, Liaoning Technical University No. 88 Yulong Road Fuxin Liaoning Province 123000 China
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Lu Y, Wu H, Xia Y, Huang M. Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:1605-1618. [PMID: 33843746 DOI: 10.2166/wst.2021.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Phosphorus removal is a crucial aspect of controlling water pollution and eutrophication. In this study, the preparation of lanthanum carbonate (LC) nano-adsorbents for the efficient removal of phosphate (P) from water and wastewater was investigated. Results from XRD, SEM and Zeta potential analyses revealed that addition of magnesium ions and adjustment of the reaction temperature could control the morphology and microstructure of LC. Effects of initial pH, adsorbent dosage, contact time, and the water matrix on P adsorption were investigated. Batch adsorption experiments revealed that LC showed strong performance on P removal over a wide pH range (3.0 to 11.0). The kinetic data followed a pseudo-second-order model, and equilibrium data were well fitted by the Langmuir model with a maximum adsorption capacity of 112.9 mg P/g. Adsorption thermodynamics showed that the adsorption process was exothermic and spontaneous. Results of a monolayer model for single adsorption indicated that P could completely interact with two or more functional groups from the LC surface. In the presence of competing ions (F-, Cl-, SO42-, NO3-, and HCO3-), LC maintained high selectivity for phosphate. For a real effluent, the P concentration was efficiently reduced from 3.2 mg P/L to below 0.5 mg P/L at a dose of 0.5 g/L LC. All the results suggested that LC can serve as a promising adsorbent for P removal in a wide range of pH, and thus could meet the stricter discharge regulations from actual wastewater.
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Affiliation(s)
- Yifan Lu
- College of Chemical & Biochemical Engineering, Zhejiang University, Zheda Road, Hangzhou 310027, China E-mail:
| | - Huawei Wu
- College of Chemical & Biochemical Engineering, Zhejiang University, Zheda Road, Hangzhou 310027, China E-mail:
| | - Yan Xia
- College of Chemical & Biochemical Engineering, Zhejiang University, Zheda Road, Hangzhou 310027, China E-mail:
| | - Mei Huang
- College of Chemical & Biochemical Engineering, Zhejiang University, Zheda Road, Hangzhou 310027, China E-mail: ; Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
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Mukherjee S, Thakur AK, Goswami R, Mazumder P, Taki K, Vithanage M, Kumar M. Efficacy of agricultural waste derived biochar for arsenic removal: Tackling water quality in the Indo-Gangetic plain. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 281:111814. [PMID: 33401117 DOI: 10.1016/j.jenvman.2020.111814] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 11/17/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
Arsenic (As), a geogenic and extremely toxic metalloid can jeopardize terrestrial and aquatic ecosystems through environmental partitioning in natural soil-water compartment, geothermal and marine environments. Although, many researchers have investigated the decontamination potential of different mesoporous engineered bio sorbents for a suite of contaminants, still the removal efficiency of various pyrolyzed agricultural residues needs special attention. In the present study, rice straw derived biochar (RSBC) produced from slow pyrolysis process at 600 °C was used to remove As (V) from aqueous medium. Batch experiments were conducted at room temperature (25 ± 2 °C) under different initial concentrations (10, 30, 50, 100 μg L-1), adsorbent dosages (0.5-5 μg L-1), pH (4.0-10.0) and contact times (0-180 min). The adsorption equilibrium was established in 120 min. Adsorption process mainly followed pseudo-second order kinetics (R2 ≥ 0.96) and Langmuir isotherm models (R2 ≥ 0.99), and the monolayer sorption capacity of 25.6 μg g-1 for As (V) on RSBC was achieved. Among the different adsorbent dosages and initial concentrations used in the present study, 0.2 g L-1 (14.8 μg g-1) and 100 μg L-1 (13.1 μg g-1) were selected as an optimum parameters. A comparative analysis of RSBC with other pyrolyzed waste materials revealed that RSBC had comparable adsorption ability (per unit area). These acidic groups are responsible for the electron exchange (electrostatic attraction, ion-exchange, π-π/n-πinteractions) with the anionic arsenate, which facilitates optimum removal (>60%) at 7 < pH < pHPZC. The future areas of research will focus on decontamination of real wastewater samples containing mixtures of different emerging contaminants and installation of biofilter beds that contains different spent adsorbents/organic substrates (including biochar) for biopurification study in real case scenario.
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Affiliation(s)
- Santanu Mukherjee
- Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gujarat, 382355, India; School of Agriculture, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India
| | - Alok Kumar Thakur
- Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gujarat, 382355, India
| | - Ritusmita Goswami
- Department of Environmental Science, The Assam Royal Global University, Guwahati, 781035, Assam, India; Centre for Ecology, Environment and Sustainable Development, Tata Institute of Social Sciences, Guwahati, 781013, Assam, India
| | - Payal Mazumder
- Center for the Environment, Indian Institute of Technology, Guwahati, Assam, 781039, India
| | - Kaling Taki
- Discipline of Civil Engineering, Indian Institute of Technology, Gandhinagar, 382355, Gujarat, India
| | - Meththika Vithanage
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka
| | - Manish Kumar
- Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gujarat, 382355, India.
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Mukherjee S, Kumari D, Joshi M, An AK, Kumar M. Low-cost bio-based sustainable removal of lead and cadmium using a polyphenolic bioactive Indian curry leaf (Murraya koengii) powder. Int J Hyg Environ Health 2020; 226:113471. [DOI: 10.1016/j.ijheh.2020.113471] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 01/03/2023]
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12
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Nagaraj A, Pillay K, Kishor Kumar S, Rajan M. Dicarboxylic acid cross-linked metal ion decorated bentonite clay and chitosan for fluoride removal studies. RSC Adv 2020; 10:16791-16803. [PMID: 35498823 PMCID: PMC9053074 DOI: 10.1039/d0ra00598c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 04/09/2020] [Indexed: 11/21/2022] Open
Abstract
This study focused on the synthesis of a dicarboxylic acid (malic acid (A)), metal ion decorated bentonite clay (BC) modified with chitosan (CS) and the investigation of its defluoridation efficiency in fluoride contaminated groundwater. The synthesized adsorbent showed a fluoride removal capacity of 9.87 mg g-1. Batch adsorption studies were conducted to establish the effect of various parameters such as contact time, pH, initial concentration, and competitor ions. The adsorption isotherms of Freundlich, Dubinin-Radushkevich, and Langmuir were studied and the Freundlich isotherm fitted the data well. Kinetic studies showed that the adsorption process follows pseudo second order kinetics. Thermodynamic studies revealed that the fluoride adsorption process is spontaneous and endothermic. Reuse and regeneration studies were executed for effective application of the nanocomposite. The synthesized adsorbent also has potential for real water treatment applications.
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Affiliation(s)
- Ammavasi Nagaraj
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University Madurai Tamil Nadu 625 021 India +91 9488014084
| | - Kriveshini Pillay
- Department of Chemical Sciences, University of Johannesburg Johannesburg South Africa
| | | | - Mariappan Rajan
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University Madurai Tamil Nadu 625 021 India +91 9488014084
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Tan TL, Krusnamurthy PA, Nakajima H, Rashid SA. Adsorptive, kinetics and regeneration studies of fluoride removal from water using zirconium-based metal organic frameworks. RSC Adv 2020; 10:18740-18752. [PMID: 35518321 PMCID: PMC9054007 DOI: 10.1039/d0ra01268h] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/02/2020] [Indexed: 12/07/2022] Open
Abstract
Fluoride contamination has been recognised as one of the major problems worldwide, imposing a serious threat to human health and affecting the safety of drinking water. Adsorption is one of the widely considered appropriate technologies for water defluorination. The present study describes the preparation of a zirconium-based metal organic framework (MOF-801) adsorbent using a solvothermal method and its adsorption efficiency for removal of fluoride ions from water. The morphology of MOF-801 was characterized by PXRD, FESEM and XPS, and the pore structure and surface area were calculated according to BET. It was found that the synthesized MOF-801 showed the distinguishable octahedral shape particle with a lattice spacing of 0.304 nm, indicative of (011) planes of ZrO2. Adsorption studies were carried out to study the defluorination effectiveness by varying contact time (30–150 min), adsorbent dose (0.3–1.5 g L−1), adsorbate concentration (5–25 mg L−1), as well as kinetics and isotherms. The maximum removal efficiency for fluoride using MOF-801 at equilibrium was found to be 92.3%. Moreover, the adsorption kinetic studies indicate that the overall fluoride adsorption process was best described by pseudo-second-order kinetics. The adsorption data were well-fitted with the Langmuir isotherm model (R2 = 0.9925) with maximum adsorption capacity of 19.42 mg g−1. The synthesized MOF-801 had good reusability and was used in up to four cycles for fluoride removal attaining around 79% removal efficiency after the fourth cycle. All the results suggested that the synthesized MOF-801 has potential to be an excellent adsorbent for wastewater defluorination treatment. A facile solvothermal method is used to prepare octahedral MOF-801 with a lattice spacing of 0.304 nm representative of ZrO2 (011) planes for water defluorination.![]()
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Affiliation(s)
- Tong Ling Tan
- Institute of Advanced Technology
- Universiti Putra Malaysia
- Malaysia
| | - Poovarasi A/P Krusnamurthy
- Department of Chemical and Environmental Engineering
- Faculty of Engineering
- Universiti Putra Malaysia
- Malaysia
| | - Hideki Nakajima
- Synchrotron Light Research Institute (Public Organization)
- Nakhon Ratchasima 30000
- Thailand
| | - Suraya Abdul Rashid
- Institute of Advanced Technology
- Universiti Putra Malaysia
- Malaysia
- Department of Chemical and Environmental Engineering
- Faculty of Engineering
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14
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Choong CE, Wong KT, Jang SB, Nah IW, Choi J, Ibrahim S, Yoon Y, Jang M. Fluoride removal by palm shell waste based powdered activated carbon vs. functionalized carbon with magnesium silicate: Implications for their application in water treatment. CHEMOSPHERE 2020; 239:124765. [PMID: 31520981 DOI: 10.1016/j.chemosphere.2019.124765] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
In this study, palm shell activated carbon powder (PSAC) and magnesium silicate (MgSiO3) modified PSAC (MPSAC) were thoroughly investigated for fluoride (F-) adsorption. F- adsorption isotherms showed that PSAC and MPSAC over-performed some other reported F- adsorbents with adsorption capacities of 116 mg g-1 and 150 mg g-1, respectively. Interestingly, the MgSiO3 impregnated layer changed the adsorption behavior of F- from monolayer to heterogeneous multilayer based on the Langmuir and Freundlich isotherm models verified by chi-square test (X2). Thermodynamic parameters indicated that the F- adsorption on PSAC and MPSAC was spontaneous and exothermic. PSAC and MPSAC were characterized using FESEM-EDX, XRD, FTIR and XPS to investigate the F- adsorption mechanism. Based on the regeneration tests using NaOH (0.01 M), PSAC exhibited poor regeneration (<20%) while MPSAC had steady adsorption efficiencies (∼70%) even after 5 regeneration cycles. This is due to highly polarized C-F bond was found on PSAC while Mg-F bond was distinguished on MPSAC, evidently denoting that the F- adsorption is mainly resulted from the exchange of hydroxyl (-OH) group. It was concluded that PSAC would be a potential adsorbent for in-situ F- groundwater remediation due to its capability to retain F- without leaching out in a wide range pH. MPSAC would be an alternative adsorbent for ex-situ F- water remediation because it can easily regenerate with NaOH solution. With the excellent F- adsorption properties, both PSAC and MPSAC offer as promising adsorbents for F- remediation in the aqueous phase.
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Affiliation(s)
- Choe Earn Choong
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Kien Tiek Wong
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Seok Byum Jang
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - In Wook Nah
- Center for Energy Convergence, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul, 02792, Republic of Korea
| | - Jaeyoung Choi
- Green City Technology Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-Gu, Seoul, 02792, Republic of Korea
| | - Shaliza Ibrahim
- Institute of Ocean and Earth Sciences (IOES), University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea.
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15
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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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16
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Hongtao L, Shuxia L, Hua Z, Yanling Q, Daqiang Y, Jianfu Z, Zhiliang Z. Comparative study on synchronous adsorption of arsenate and fluoride in aqueous solution onto MgAlFe-LDHs with different intercalating anions. RSC Adv 2018; 8:33301-33313. [PMID: 35548142 PMCID: PMC9086567 DOI: 10.1039/c8ra05968c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/15/2018] [Indexed: 01/31/2023] Open
Abstract
In this study, a series of MgAlFe-LDHs (Cl-, NO3 -, intercalation, and calcined products of a CO3 2- interlayer) was synthesized and used for adsorption of arsenate and fluoride in individual contaminants and coexisting pollutant systems. Effects of various factors such as initial pH of solution, dosage of materials, coexisting ions, contact time, and initial pollutant concentrations were evaluated. Experimental results showed that different intercalating anions had a significant effect on adsorption performance of arsenate and fluoride in water. The adsorption of arsenate and fluoride on MgAlFe-CLDH, MgAlFe-Cl-LDH or MgAlFe-NO3-LDH can be described by different adsorption isotherm equations. During the simultaneous removal process, arsenate and fluoride competed for adsorption sites of the adsorbent materials, and the fluoride ions had advantages in the competitive adsorption on MgAlFe-Cl-LDH and MgAlFe-NO3-LDH. MgAlFe-NO3-LDH was used to adsorb arsenate and fluoride in coexisting pollution systems (the concentration of each pollutant was 2 mg L-1, the adsorbent dosage was 1.5 g L-1). The remaining arsenic concentration was reduced to less than 10 μg L-1 and the remaining fluoride ion concentration to below 20 μg L-1 which meets the World Health Organization's, EPA's and China's drinking water standards for arsenic and fluoride limits. A possible mechanism is discussed with support from further XRD, SEM, and XPS analysis of the materials after their adsorption.
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Affiliation(s)
- Lu Hongtao
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University Shanghai 200092 China
- Postdoctoral Research Station, College of Civil Engineering, Tongji University Shanghai 200092 China
| | - Liu Shuxia
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University Shanghai 200092 China
| | - Zhang Hua
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University Shanghai 200092 China
| | - Qiu Yanling
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University Shanghai 200092 China +86-21-6598 4626 +86-21-6598 2426
| | - Yin Daqiang
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University Shanghai 200092 China +86-21-6598 4626 +86-21-6598 2426
| | - Zhao Jianfu
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University Shanghai 200092 China
| | - Zhu Zhiliang
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University Shanghai 200092 China
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University Shanghai 200092 China +86-21-6598 4626 +86-21-6598 2426
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