1
|
Saqib NU, Shah I, Adnan R, Zaman F, Imam SS, Jan HA, Aamir A, Haleem MA. Evaluation of the photocatalytic degradation mechanism of methylene blue using nascent and Ag + ions-modified TiO 2. Photochem Photobiol Sci 2024; 23:245-256. [PMID: 38105417 DOI: 10.1007/s43630-023-00513-2] [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: 07/10/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
In photocatalytic removal of organic pollutants, adsorption and degradation are two important processes that take place. Various instrumental techniques and trapping experiments have been used to identify the reactive species and the mechanism of photodegradation. The present work focuses on investigating the mechanism of photo-induced degradation from the comparative characterization of fresh and used samples, isotherm models, competitive adsorption, and desorption studies of pure and Ag+-modified TiO2 NPs. The comparative characterizations of fresh and used NPs were carried out with FT-IR, EDX, and XRF analyses after methylene blue (MB) degradation. The Ag+ doped TiO2 used in this study was fabricated using simple impregnation technique. The prepared NPs were characterized using techniques including XPS, XRD, SEM/EDX, XRF, UV-DRS, and pH point-zero charge analyses (pHPZC). The Ag+-modified TiO2 NPs showed improved efficiency compared to pure TiO2 NPs using normal compact fluorescent light (CFL). The Langmuir and Freundlich isotherm models were applied to test the adsorption behavior on the surface photocatalysts. The investigational data finest fitted to the Langmuir isotherms model compared to Freundlich model, suggesting the homogeneous monolayer adsorption followed by degradations. The competitive removal of MB in the presence of a photo-generated electrons trapper (Cd2+) was enhanced almost 3-folds (115 mg/L) compared to the removal from a single MB solution (40 mg/L). The characterization of the used samples as well as adsorption in the dark and negligible desorption of used samples support the involvement of the proposed photo-induced degradation mechanism.
Collapse
Affiliation(s)
- Najm Us Saqib
- Department of Chemistry, University of Buner, Khyber Pakhtunkhwa, Pakistan.
| | - Irfan Shah
- Department of Chemistry, Abbottabad University of Science and Technology, Abbottabad, Pakistan
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia.
| | - Falak Zaman
- Department of Physics, University of Buner, Khyber Pakhtunkhwa, Pakistan
| | - Saifullahi Shehu Imam
- Department of Pure and Industrial Chemistry, Bayero University, P.M.B 3011, Kano, Nigeria
| | - Hammad Ahmad Jan
- Department of Botany, University of Buner, Khyber Pakhtunkhwa, Pakistan
| | - Asma Aamir
- Department of Chemistry, University of Buner, Khyber Pakhtunkhwa, Pakistan
| | | |
Collapse
|
2
|
Mandal S, Panda B, Mondal D, Khatun J, Dhak P, Dhak D. 3D flower-like zirconium magnesium oxide nanocomposite for efficient fluoride removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:119491-119505. [PMID: 37930573 DOI: 10.1007/s11356-023-30704-4] [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: 06/29/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
A 3D flower-shaped bimetallic nanocomposite zirconium magnesium oxide (ZMO) was prepared first time by the controlled solution combustion method using triethanolamine (TEA) as a fuel and chelating agent. The composite material was used to remove excess fluoride via adsorption. The thermal stability of the adsorbent was characterized by thermogravimetric analysis (TGA). Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD) were used to characterize the adsorbent. The surface charge of the nano adsorbent was determined by Zeta Sizer. The surface area and pore volume of the adsorbent were determined by Brunauer-Emmett-Teller (BET) isotherm and Barrett-Joyner-Halenda (BJH) methods. The adsorption behavior of fluoride was studied systematically varying the pH, contact time, adsorbent dose, and initial fluoride concentration. The adsorption followed the Langmuir isotherm model with a maximum adsorption capacity of 42.14 mg/g. The pseudo-second-order kinetic model was confirmed by the adsorption study. The maximum adsorption efficiency was in the 6-10 pH range. The reaction mechanism was mainly based on ion exchange between hydroxy and fluoride ions which was proven by X-ray photoelectron spectroscopy (XPS). Real water tests indicated that ZMO could be used as a potential defluoridation agent for fluoride containing groundwater treatment.
Collapse
Affiliation(s)
- Supriya Mandal
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 732104, West Bengal, India
| | - Bholanath Panda
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 732104, West Bengal, India
| | - Debasish Mondal
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 732104, West Bengal, India
| | - Julekha Khatun
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 732104, West Bengal, India
| | - Prasanta Dhak
- Department of Chemistry, Techno India University, EM-4, Sector-V, Saltlake City, Kolkata, West Bengal, 700091, India
| | - Debasis Dhak
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 732104, West Bengal, India.
| |
Collapse
|
3
|
Nelima D, Wambu EW, Kituyi JL. Fluoride distribution in selected foodstuffs from Nakuru County, Kenya, and the risk factors for its human overexposure. Sci Rep 2023; 13:15295. [PMID: 37714918 PMCID: PMC10504336 DOI: 10.1038/s41598-023-41601-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 08/29/2023] [Indexed: 09/17/2023] Open
Abstract
Critical data on the impacts of fluoride (F) in food systems along the Eastern Africa Rift Valley System (EARS) is needed for public health risk assessment and for the development of strategies for ameliorating its deleterious effects among the affected communities. Long-term F overexposure causes dental and skeletal fluorosis, and leads to neurotoxicity, which impacts several important body functions. Investigating F exposure pathways is of essence to inform and safeguard public health of the affected communities. The current study assessed the F levels in potatoes (Solanum tuberosum L.), beans (Phaseolus vulgaris L.) and garden peas (Possum sativa) from Nakuru County, Kenya, by potentiometric analysis using F ion-selective electrodes. It then evaluated the risk factors for excessive human exposure to F through contaminated foodstuffs. The mean F levels in the potatoes (8.50 ± 4.70 mg/kg), beans (8.02 ± 4.12 mg/kg) and peas (4.99 ± 1.25 mg/kg) exceeded recommended dietary allowances (RDA) level of 4 mg/kg endorsed by US Institute of Medicine for the different categories of people. The F distribution trends in beans and potatoes reflected the environmental patterns of F contamination of the study area but the spatial extent Fin the peas indicated existence of partial resistance of the pea plants to environmental F uptake. The results indicated that both the beans and the potatoes were more liable to accumulating greater amounts of F from the environment than garden peas and that all the three foodstuffs contained high F levels that posed greater risk of F overexposure and its deleterious impacts among the young children, male populations, and in people of greater body weight and high physical activity levels.
Collapse
Affiliation(s)
- Delphine Nelima
- Department of Chemistry, School of Science, University of Eldoret, P.O. BOX, Eldoret, 1125-30100, Kenya
| | - Enos W Wambu
- Department of Chemistry, School of Science, University of Eldoret, P.O. BOX, Eldoret, 1125-30100, Kenya.
| | - John L Kituyi
- Department of Chemistry, School of Science, University of Eldoret, P.O. BOX, Eldoret, 1125-30100, Kenya
| |
Collapse
|
4
|
Budania R, Dangayach S. A comprehensive review on permeable reactive barrier for the remediation of groundwater contamination. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117343. [PMID: 36758361 DOI: 10.1016/j.jenvman.2023.117343] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/31/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Groundwater quality is deteriorating due to contamination from both natural and anthropogenic sources. Traditional "Pump and Treat" techniques of treating the groundwater suffer from the disadvantages of a small-scale and energy-intensive approach. Permeable reactive barriers (PRBs), owing to their passive operation, offer a more sustainable strategy for remediation. This promising technique focuses on eliminating heavy metal pollutants and hazardous aromatic compounds by physisorption, chemisorption, precipitation, denitrification, and/or biodegradation. Researchers have utilized ZVI, activated carbon, natural and manufactured zeolites, and other by-products as reactive media barriers. Environmental parameters, i.e., pH, initial pollutant concentration, organic substance, dissolved oxygen, and reactive media by-products, all influence a PRB's performance. Although their long-term impact and performance are uncertain, PRBs are still evolving as viable alternatives to pump-and-treat techniques. The use of PRBs to remove anionic contaminants (e.g., Fluoride, Nitrate, etc.) has received less attention since precipitates can clog the reactive barrier and hinder groundwater flow. In this paper, we present an insight into this approach and the tremendous implications for future scientific study that integrates this strategy using sustainability and explores the viability of PRBs for anionic pollutants.
Collapse
Affiliation(s)
- Ravindra Budania
- Department of Civil Engineering, Malaviya National Institute of Technology, Jaipur, 302017, Rajasthan, India.
| | - Sanyam Dangayach
- Department of Civil Engineering, Malaviya National Institute of Technology, Jaipur, 302017, Rajasthan, India.
| |
Collapse
|
5
|
Ayalew AA. Comparative adsorptive performance of adsorbents developed from kaolin clay and limestone for de-fluoridation of groundwater. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1016/j.sajce.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
6
|
Wei L, Li Z, Ye G, Rietveld LC, van Halem D. Comparative study of low-cost fluoride removal by layered double hydroxides, geopolymers, softening pellets and struvite. ENVIRONMENTAL TECHNOLOGY 2022; 43:4306-4314. [PMID: 34157955 DOI: 10.1080/09593330.2021.1946600] [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: 03/28/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Excessive F- in drinking water due to natural and anthropogenic activities is a serious health hazard affecting humans worldwide. In this study, a comparative assessment was made of eight mineral-based materials with advantageous structural properties for F- uptake: layered-double-hydroxides (LDHs), geopolymers, softening pellets and struvite. These materials are considered low-cost, for being either a waste or by-product, or can be locally-sourced. It can be concluded that Ca-based materials showed the strongest affinity for F- (Ca-Al-CO3 LDHs, slag-based geopolymer, softening pellets). The Langmuir adsorption capacity of Ca-Al-CO3 LDHs, slag-based geopolymer and softening pellets was observed to be 20.83, 5.23 and 1.20 mg/g, respectively. The main mechanism of F- uptake on Ca-Al-CO3 LDHs, Mg-Al-Cl LDHs, slag-based geopolymers and softening pellets was found to be sorption at low initial F- concentrations (<10 mg/L) whereas precipitation as CaF2 is proposed to play a major role at higher initial F- concentrations (>20 mg/L). Although the softening pellets had the highest Ca-content (96-97%; XRF), their dense structure and consequent low BET surface area (2-3 m2/g), resulted in poorer performance than the Ca-based LDHs and slag-based geopolymers. Nevertheless, geopolymers, as well as struvite, were not considered to be of interest for application in water treatment, as they would need modification due to their poor stability and/or F- leaching.
Collapse
Affiliation(s)
- Liangfu Wei
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Delft University of Technology Delft, The Netherlands
| | - Zhenming Li
- Faculty of Civil Engineering and Geosciences, Department of Materials and Environment (Microlab), Delft University of Technology Delft, The Netherlands
| | - Guang Ye
- Faculty of Civil Engineering and Geosciences, Department of Materials and Environment (Microlab), Delft University of Technology Delft, The Netherlands
| | - Luuk C Rietveld
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Delft University of Technology Delft, The Netherlands
| | - Doris van Halem
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Delft University of Technology Delft, The Netherlands
| |
Collapse
|
7
|
Hasan MS, Karmakar AK. Removal of car battery heavy metals from wastewater by activated carbons: a brief review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:73675-73717. [PMID: 36085225 DOI: 10.1007/s11356-022-22715-4] [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: 06/24/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Spent automobile batteries are one of the most significant secondary sources of harmful heavy metals for the environment. After being incorporated into the aquatic ecosystems, these metals disseminate to various plants, microorganisms, and the human body and cause multiple adverse effects. Activated carbons (ACs) have long been used as an effective adsorbent for different heavy metals in wastewater treatment processes. Although numerous research works have been published to date on this topic, they are scattered in the literature. In this review, we have assembled these works and provided an extensive overview of the application of ACs for treating spent car battery heavy metals (CBHMs) from aquatic systems. The preparation of ACs from different precursor materials, their application in the adsorption of CBHMs, the adsorption mechanism, kinetics, adsorption isotherms and various parameters that may affect the adsorption processes have been discussed in detail. A brief comparative analysis of the adsorption performances of ACs prepared from different precursor materials is also provided. Finally, recommendations for future research works are also offered.
Collapse
Affiliation(s)
- Md Saif Hasan
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Aneek Krishna Karmakar
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| |
Collapse
|
8
|
Choi MY, Kang JK, Lee CG, Park SJ. Feasibility of fluoride removal using calcined Mactra veneriformis shells: Adsorption mechanism and optimization study using RSM and ANN. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.10.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
9
|
Saqib NU, Adnan R, Shah I, Arshad M, Inam M. Activated carbon, zeolite, and ceramics immobilized TiO 2 photocatalysts for the enhanced sequential uptake of dyes and Cd 2+ ions. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2070497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Najm Us Saqib
- Department of Chemistry, University of Buner, Khyber Pakhtunkhwa, Pakistan
- School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | - Irfan Shah
- Department of Chemistry, University of Education-Lahore, Lahore, Pakistan
| | - Muhammad Arshad
- Department of Electronics, University of Buner, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Inam
- Department of Chemistry, Zhejiang University, Hangzhou, P. R. China
| |
Collapse
|
10
|
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.
Collapse
|
11
|
Ahmad K, Shah IA, Ali S, Khan MT, Qureshi MBA, Shah SHA, Ali A, Rashid W, Gul HN. Synthesis and evaluation of Ca-doped ferrihydrite as a novel adsorbent for the efficient removal of fluoride. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:6375-6388. [PMID: 34449025 DOI: 10.1007/s11356-021-16105-5] [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: 05/05/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Ferric hydrate has been extensively applied for the removal of various types of pollutants from wastewater because of its low cost and high efficiency. However, its wide-scale application has been greatly restricted by high-dose and low-adsorption capacity. Therefore, a novel Ca-doped ferrihydrite adsorbent has been synthesized and used for the enhanced removal of fluoride from wastewater in the presence of other co-existing ions. At 5 mg/L initial fluoride concentration and pH 5, the removal efficiency of fluoride approached to 97.5% and remained stable. Similarly, with the increase of dose from 100 to 300 mg/L, the fluoride removal linearly increased to 98% and remained plateau at neutral pH. Also, the presence of co-existing ions such as NO3-, SO42-, Cl-, and natural organic matter has not significantly influenced the removal performance of the adsorbent. Fluoride removal best fit the pseudo-second-order reaction kinetics and Langmuir isotherm model. The prepared adsorbent exhibited a maximum adsorption capacity of 53.21 mg/g for fluoride uptake from water. The SEM-EDX confirmed the doping of Ca onto the ferrihydrite where the elemental peaks of Ca and Fe emerged at the energy value of about 3.6 Kev and 7.1 Kev respectively in EDX analysis. In addition, SEM results of Ca-doped ferrihydrite adsorbent illustrated that a large microplates type of products was acquired after synthesis. The regeneration results confirmed that adsorbent could retain their original adsorption capacity after five regeneration cycles. The current study suggested that Ca-doped ferrihydrite has the application potential for the enhanced adsorption of fluoride from the water phase.
Collapse
Affiliation(s)
- Khalil Ahmad
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China.
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, China.
| | - Izaz Ali Shah
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, China
| | - Sharafat Ali
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, China
| | - Muhammad Tariq Khan
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, New Territories, Hong Kong
| | - Muhammad Bilal Ahmed Qureshi
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University, Beijing, 100875, China
| | - Syed Hassan Ali Shah
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, China
| | - Asmat Ali
- School of Environmental Studies, China University of Geosciences, Wuhan, 430078, People's Republic of China
| | - Wajid Rashid
- Department of Environmental and Conservation Sciences, University of Swat, Mingora, 19130, Pakistan
| | - Hifza Nayab Gul
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
| |
Collapse
|
12
|
Li S, Liu M, Meng F, Hu X, Yu W. Removal of F - and organic matter from coking wastewater by coupling dosing FeCl 3 and AlCl 3. J Environ Sci (China) 2021; 110:2-11. [PMID: 34593190 DOI: 10.1016/j.jes.2021.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 06/13/2023]
Abstract
Coagulation and precipitation is a widely applied method to remove F- from wastewater. In this work, the effect of coagulation on the removal of F- and organic matter from coking wastewater was studied using AlCl3 and FeCl3 as compound coagulants. The removal rates of F- and organic matter under different coagulant doses and pH conditions were investigated. The results show that the highest removal rates of F- by AlCl3 and FeCl3 are 94.4% and 25.4%, respectively; when the dosage is 10 mmol/L, the TOC removal rates of FeCl3 and AlCl3 reach 20.4% and 34.7%, respectively. Therefore, the removal rate of F- by AlCl3 is higher than that of FeCl3, but the removal rate of organic matter by FeCl3 is relatively higher. The addition of Ca2+ can promote the removal of F-, but the removal rate of organic matter decreases. In addition, by investigating the effects of different pH and Fe-Al ratio on the removal rate, the removal effect of adding FeCl3 and AlCl3 at the same time was discussed. The results show that the most suitable working condition for the removal of organic matter and F- is that the pH is 6.5 and the molar ratio of Al/Fe is 8:2. Overall, the removal mechanism of F- and organic matter in coking wastewater by FeCl3 and AlCl3 was explored in this study. The experimental results can provide reference for the advanced treatment of coking wastewater.
Collapse
Affiliation(s)
- Shuo Li
- College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100086, China
| | - Mengjie Liu
- Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100086, China
| | - Fuming Meng
- Jinan Municipal Engineering Design & Research Institute (Group) Co. LTD, China
| | - Xia Hu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Wenzheng Yu
- Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100086, China.
| |
Collapse
|
13
|
Wu S, Tao W, Zheng Y, Ge H, He J, Yang Y, Wang Z. A novel approach for lithium recovery from waste lithium-containing aluminum electrolyte by a roasting-leaching process. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 134:89-99. [PMID: 34418743 DOI: 10.1016/j.wasman.2021.08.011] [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: 05/18/2021] [Revised: 08/08/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
With the development of secondary resources, development of suitable methods for the recovery of high value metals from solid waste is crucial for sustainable development. Aluminum electrolysis of China, solid waste, such as waste aluminum electrolyte, has been largely idled and caused serious environmental pollution. In this paper, a novel approach is developed for achieving the separation/recovery of lithium from spent lithium-containing aluminum electrolyte by a sodium carbonate roasting-acid leaching process. The effect on the extraction behavior of lithium under different roasting and leaching conditions was systematically studied. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to elucidate the phase evolution. The results indicated that 73.1% of the lithium was obtained under the optimized conditions: a m(actual)/m(theory) ratio of 1.10 with roasting at 850 °C for 2.5 h; a HNO3 solution concentration of 2 mol/L, and a liquid to solid ratio of 10 at 60 °C for 180 min. Through the analysis of the roasting sample, it was found that the addition of Na2CO3 promoted the conversion of Na2LiAlF6 to LiF. The content of lithium in electrolyte significantly reduced from 2.20% to 0.71% after leaching, which made it possible for the residue to be reused as the raw material for the aluminum reduction cell. The leachate was neutralized and purified with CaO and Na2CO3 solution, respectively, and then lithium be recovered in the form of Li2CO3. Overall, this study highlights an effectively and environmentally feasible plan for the treatment of spent aluminum electrolyte and to recycle lithium.
Collapse
Affiliation(s)
- Shaohua Wu
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Wenju Tao
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China.
| | - Yanchen Zheng
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Hui Ge
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Jingui He
- School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
| | - Youjian Yang
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Zhaowen Wang
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China.
| |
Collapse
|
14
|
Low-cost Zeolite/TiO2 composite for the photocatalytically enhanced adsorption of Cd2+ from aqueous solution. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-021-02179-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
15
|
Lee JI, Kang JK, Hong SH, Lee CG, Jeong S, Park SJ. Thermally treated Mytilus coruscus shells for fluoride removal and their adsorption mechanism. CHEMOSPHERE 2021; 263:128328. [PMID: 33297258 DOI: 10.1016/j.chemosphere.2020.128328] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 06/12/2023]
Abstract
We evaluated Mytilus coruscus shells (MCS) as an adsorbent for fluoride removal. Its removal efficiency was enhanced by thermal treatment and MCS at 800 °C (MCS-800) increased significantly its fluoride adsorption capacity from 0 to 12.28 mg/g. While raw MCS is mainly composed of calcium carbonate (CaCO3), MCS-800 consisted of 56.9% of CaCO3 and 43.1% of calcium hydroxide (Ca(OH)2). The superior adsorption capacity of MCS-800 compared to untreated MCS can be also explained by its larger specific surface area and less negative charge after the thermal treatment. X-ray photoelectron spectroscopy and X-ray diffraction analysis revealed that the fluoride adsorption of MCS-800 occurred via the formation of calcium fluorite (CaF2). Fluoride adsorption of MCS-800 approached equilibrium within 6 h and this kinetic adsorption was well-described by a pseudo-second-order model. The Langmuir model was suitable for describing the fluoride adsorption of MCS-800 under different initial concentrations. The maximum fluoride adsorption amount of MCS-800 was 82.93 mg/g, which was superior to those of other adsorbents derived from industrial byproducts. The enthalpy change of fluoride adsorption was 78.75 kJ/mol and the negative sign of free energy indicated that this phenomenon was spontaneous. The increase of pH from 3.0 to 11.0 slightly decreased the fluoride adsorption capacity of MCS-800. The adsorption was inhibited in the presence of anions and their impact increased with following trend: chloride < sulfate < carbonate < phosphate. The fluoride adsorption capacities of MCS-800 after washing with deionized water and 0.1 M NaOH were reduced by 31.5% and 57.4%, respectively.
Collapse
Affiliation(s)
- Jae-In Lee
- Department of Integrated System Engineering, Hankyong National University, Anseong, 17579, South Korea
| | - Jin-Kyu Kang
- Environmental Functional Materials and Water Treatment Laboratory, Seoul National University, Seoul, 08826, South Korea
| | - Seung-Hee Hong
- Department of Integrated System Engineering, Hankyong National University, Anseong, 17579, South Korea
| | - Chang-Gu Lee
- Department of Environmental and Safety Engineering, Ajou University, Suwon, 16499, South Korea
| | - Sanghyun Jeong
- Environmental Engineering, Pusan National University, Busan, 46241, South Korea
| | - Seong-Jik Park
- Department of Bioresources and Rural System Engineering, Hankyong National University, Anseong, 17579, South Korea.
| |
Collapse
|
16
|
Wallace AR, Su C, Choi YK, Kan E, Sun W. Removal of Fluoride from Water Using a Calcium-Modified Dairy Manure-Derived Biochar. JOURNAL OF ENVIRONMENTAL ENGINEERING (NEW YORK, N.Y.) 2020; 146:1-10. [PMID: 33746350 PMCID: PMC7970507 DOI: 10.1061/(asce)ee.1943-7870.0001812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
This study investigated the removal of fluoride from water using a calcium-modified dairy manure-derived biochar (Ca-DM500). The Ca-DM500 showed a 3.82 - 8.86 times higher removal of fluoride from water than the original (uncoated) manure-derived biochar (DM500). This is primarily attributed to strong precipitation/complexation between fluoride and calcium. The Freundlich and Redlich-Peterson sorption isotherm models better described the experimental data than the Langmuir model. Additionally, the removal kinetics were well described by the intraparticle diffusion model. The Ca-DM500 showed high reactivity per unit surface area [0.0001, 0.03, 0.16 mg F per m2 for Douglas fir-derived biochar (DF-BC), DM500. and Ca-DM500, respectively] for retention of fluoride reflecting the importance of surface complexation. The copresence of anions reduced removal by Ca-DM500 in the order SO 4 2 - ≈ PO 4 3 - > NO 3 - . The sorption behavior of fluoride in a continuous fixed-bed column was consistent with the Thomas model. Column studies demonstrated that the Ca-DM500 shows a strong affinity for fluoride, a low release potential, and a stable (unreduced) removal capacity through regeneration and reuse cycles.
Collapse
Affiliation(s)
- Anna Rose Wallace
- Office of Research and Development, Center for Environmental Solutions and Emergency Response, Groundwater Characterization and Remediation Division, US Environmental Protection Agency, Ada, OK 74820
| | - Chunming Su
- Office of Research and Development, Center for Environmental Solutions and Emergency Response, Groundwater Characterization and Remediation Division, US Environmental Protection Agency, Ada, OK 74820
| | - Yong-Keun Choi
- Dept. of Biological Engineering, Konkuk Univ., Seoul 05029, Republic of Korea
| | - Eunsung Kan
- Texas A&M AgriLife Research Center, 1229 N. US Hwy 281, US-281, Stephenville, TX 76401
| | - Wenjie Sun
- Dept. of Civil and Environmental Engineering, Southern Methodist Univ., Dallas, TX 75275
| |
Collapse
|
17
|
Rahman MM, Bodrud-Doza M, Siddiqua MT, Zahid A, Islam ARMT. Spatiotemporal distribution of fluoride in drinking water and associated probabilistic human health risk appraisal in the coastal region, Bangladesh. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138316. [PMID: 32272415 DOI: 10.1016/j.scitotenv.2020.138316] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 05/24/2023]
Abstract
Spatiotemporal distribution of fluoride in drinking water has been posing serious health concerns worldwide. However, in Bangladesh, to date, there is a very limited study reported the probabilistic health risks from fluoride content in drinking water. Therefore, we investigate the spatiotemporal distribution of fluoride concentration in drinking water and associated health risks in the coastal districts of Bangladesh based on randomly collected 840 groundwater samples (Dry-season = 302 and Wet-season = 538). Probabilistic health risk appraisal from fluoride was performed using the Monte-Carlo simulation and sensitivity analysis. Fluoride concentration in 11.89% (Wet-season) and 24.50% (Dry-season) of the samples exceeded the acceptable level of 1.0 mg/L, while 3.90% (Wet-season) and 7.28% (Dry-season) samples surpassed the maximum permissible limit (fluoride: 1.5 mg/L. The deficiency of fluoride content in groundwater (<0.50 mg/L) in Wet-season (60.41%) and in Dry-season (55.63%) was identified from the study area. The seasonality to the spatial change of fluoride concentration in drinking water has been explored. The mean non-carcinogenic risks e.g., hazard quotient (HQ) from the consumption of high fluoride-containing water for infants and children were mostly exceeded the threshold value 1 (HQ > 1) in both seasons. However, the risk of children and infants at the 95th percentile crossed the safe level (SL: 1) in the wet season and the risk of infants, children, teens and adults at the 95th percentile surpassed 1 in the dry season, indicating the potential adverse health effects. Apart from the high exposure, fluoride deficiency might be a severe problem in this region due to the very low concentration of fluoride (<0.50 mg/L) in drinking water. Sensitivity analyses indicate high fluoride-containing drinking water was the most contributing variables affecting the model outcome. Finally, the case-control study should be performed to examine further the health effects from the ingestion of high/low fluoride-bearing groundwater in the study area.
Collapse
Affiliation(s)
- Md Mostafizur Rahman
- Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh.
| | | | - Most Tahmina Siddiqua
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh
| | - Anwar Zahid
- Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh; Bangladesh Water Development Board, Dhaka, Bangladesh
| | | |
Collapse
|
18
|
Srivastava A, Kumari M, Ramanathan A, Selvaraj K, Prasad B, Prasad KS. Removal of fluoride from aqueous solution by mesoporous silica nanoparticles functionalized with chitosan derived from mushroom. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1738896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Anushree Srivastava
- Centre of Environmental Studies, Institute of Interdisciplinary Studies (IIDS), University of Allahabad, Prayag Raj, Uttar Pradesh, India
| | - Madhu Kumari
- Department of Botany, B. R. A Bihar University, Muzaffarpur, India
| | | | - Kaliaperumal Selvaraj
- Nano and Computational Materials Lab, Catalysis Division, National Chemical Laboratory, Council of Scientific and Industrial Research, Pune, India
| | - Bablu Prasad
- Faculty of Science, Centre of environmental studies, MSU, Vadodara, India
| | - Kumar Suranjit Prasad
- Centre of Environmental Studies, Institute of Interdisciplinary Studies (IIDS), University of Allahabad, Prayag Raj, Uttar Pradesh, India
| |
Collapse
|
19
|
Kim W, Singh R, Smith JA. Modified Crushed Oyster Shells for Fluoride Removal from Water. Sci Rep 2020; 10:5759. [PMID: 32238852 PMCID: PMC7113297 DOI: 10.1038/s41598-020-60743-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 01/16/2020] [Indexed: 11/09/2022] Open
Abstract
Elevated concentrations of fluoride ions (F−) in natural groundwater are a worldwide problem. Discarded oyster shells were ground to ≤100 µm particle size to produce oyster shell powder (OS). A subset of the OS was heated to produce calcined oyster shell (COS). A subset of the COS was further treated with 1 M phosphoric acid to produce phosphoric-acid-treated oyster shell (POS). OS and COS were combined with phosphoric acid (1.6 mM and 3.2 mM) to produce OS + P (oyster shell with phosphoric acid) and COS + P (calcined oyster shell with phosphoric acid). OS and COS removed 46% and 50% (10 g/L of sorbent dose) but POS, OS + P and COS + P removed 96%, 100% and 76% (1 g/L of sorbent dose) when the initial concentration of fluoride was 10 mg/L. The sorption kinetics of POS, OS + P and COS + P followed second-order reaction rates, and sorption isotherms of all sorbents were well-described by the Freundlich sorption isotherm. These results indicate that oyster shells can be an effective sorbent for fluoride removal, with the added benefit of re-use of a waste product.
Collapse
Affiliation(s)
- Woohang Kim
- Department of Environmental Engineering & Biotechnology, Mokpo National Maritime University, 91 Haeyangdaehak-ro, Mokpo, 58628, South Korea.
| | - Rekha Singh
- Department of Engineering Systems and Environment, University of Virginia, Charlottesville, VA, 22904, USA
| | - James A Smith
- Department of Engineering Systems and Environment, University of Virginia, Charlottesville, VA, 22904, USA
| |
Collapse
|
20
|
Saqib NU, Khan A, Alam I, Rahim M. Glass beads immobilized doped TiO2 NPs with enhanced adsorption efficiency for arsenic(III) from aqueous solution. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2207-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
21
|
Mukhopadhyay K, Naskar A, Ghosh UC, Sasikumar P. One-pot synthesis of β-cyclodextrin amended mesoporous cerium(IV) incorporated ferric oxide surface towards the evaluation of fluoride removal efficiency from contaminated water for point of use. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121235. [PMID: 31600695 DOI: 10.1016/j.jhazmat.2019.121235] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 09/13/2019] [Accepted: 09/13/2019] [Indexed: 05/26/2023]
Abstract
Surface modified Cerium(IV)-incorporated hydrous Fe(III) oxide (CIHFO) with β-cyclodextrin (β-CD) nanocomposite (βC-CIHFO) has been developed by in-situ wet chemical deposition method and characterized by means of some analytical tools such as FTIR, XRD,OM, SEM-EDX, TEM-EDX, AFM, TG-DTA and BET surface area analyses, resembled the irregular and undulated surface morphology consisting of microcrystals (∼2-3 nm) and mesoporous (∼6.022 nm) structure confirm surface amended CIHFO with β-CD. Enhanced fluoride adsorption capacity of βC-CIHFO (107.62 mg g-1) than pure CIHFO (32.62 mg g-1) at pH 7.0 is due to the plenty of surface -OH groups of β-CD, which plays a crucial role in enhancing fluoride adsorption capacity of CIHFO. Kinetic studies obeyed pseudo-second order kinetics and multilayer adsorption process, respectively. The adsorption process is reasonably spontaneous and endothermic in nature. Minute amount of βC-CIHFO (1.8 g L-1) can effectively treat fluoride containing natural groundwater samples (9.05 mg L-1) and achieved desirable permissible level in a while. The adsorbent was magnificently regenerated up to 75.19% with a solution of pH 13.0, and can be reused up to five cycles ensures sustainable use of proposed adsorbent for fluoride removal from aqueous media.
Collapse
Affiliation(s)
- Kankan Mukhopadhyay
- Department of Geology, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Animesh Naskar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Uday Chand Ghosh
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Palani Sasikumar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India.
| |
Collapse
|
22
|
Khownpurk P, Chandra-Ambhorn W. As(III) removal under the presence of competitive anions using the calcined ground oyster shell as the adsorbent. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1577269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- P. Khownpurk
- Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Thailand
| | - W. Chandra-Ambhorn
- Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Thailand
| |
Collapse
|
23
|
Mukherjee A, Adak MK, Dhak P, Dhak D. A simple chemical method for the synthesis of Cu 2+ engrafted MgAl 2O 4 nanoparticles: Efficient fluoride adsorbents, photocatalyst and latent fingerprint detection. J Environ Sci (China) 2020; 88:301-315. [PMID: 31862071 DOI: 10.1016/j.jes.2019.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 09/02/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
An adaptable, energy efficient chemical process is employed to synthesize Cu2+ engrafted MgAl2O4 nanoparticles (Mg1-xCuxAl2O4, x=0, 0.1, 0.3, 0.5 abbreviated as MCA0, MCA1, MCA3, and MCA5 respectively), using chelating ligand and the calcination temperature was determined by the thermogravimetric analysis of the precursor mass. They acted as good fluoride adsorbent in the presence of co-ions, different pH (2-11) via chemisorption revealed from Fourier-transform infrared spectroscopy (FTIR) and photodegraded Methylene Blue (MB). The satisfactory results were for MCA1 (specific surface area 25.05m2/g) with 97% fluoride removal at pH7.0 for the 10mg/L initial fluoride concentration for 1.5g/L adsorbent dose with 45min contact time obeying the Langmuir isotherm model with negative thermodynamic parameters and 4mmol of MCA3 with 98.51% photodegradation for 10-5mol/LMB solution obeying pseudo-second-order and pseudo-first-order kinetics respectively. The proposed photodegradation mechanism of MB was established by the FTIR and high-performance liquid chromatography (HPLC) analysis. The nanoparticles are cubic, estimated through X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis. The band gap energies, grain size, and the effective working pH were estimated by diffuse reflectance spectra (DRS), scanning electron microscope (SEM), and zero-point potential analysis respectively. A soil candle with MCA1 also fabricated for the household purpose and tested with some fluorinated field samples. The MCA3 was able to enhance the latent fingerprint on smooth surfaces.
Collapse
Affiliation(s)
- Arnab Mukherjee
- Nanomaterials Research Lab, Department of Chemistry, Sidho-Kanho-Birsha University, Purulia 723104, India
| | - Mrinal K Adak
- Nanomaterials Research Lab, Department of Chemistry, Sidho-Kanho-Birsha University, Purulia 723104, India
| | - Prasanta Dhak
- Department of Chemistry, Techno India University, Kolkata 700091, India
| | - Debasis Dhak
- Nanomaterials Research Lab, Department of Chemistry, Sidho-Kanho-Birsha University, Purulia 723104, India.
| |
Collapse
|
24
|
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] [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. The adsorbent CeBC-A@CS nanocomposite has the maximum fluoride adsorption capacity.![]()
Collapse
Affiliation(s)
- Ammavasi Nagaraj
- Biomaterials in Medicinal Chemistry Laboratory
- Department of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai
| | - 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
| |
Collapse
|
25
|
Zendehdel M, Ramezani M, Shoshtari-Yeganeh B, Cruciani G, Salmani A. Simultaneous removal of Pb(II), Cd(II) and bacteria from aqueous solution using amino-functionalized Fe 3O 4/NaP zeolite nanocomposite. ENVIRONMENTAL TECHNOLOGY 2019; 40:3689-3704. [PMID: 29873602 DOI: 10.1080/09593330.2018.1485750] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/31/2018] [Indexed: 06/08/2023]
Abstract
Fe3O4/NaP nanocomposite was synthesized and modified using 3-aminopropyltrimethoxysilane (3-APTS)-functionalization. Fe3O4/NaP/NH2 was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, elemental analysis, energy-dispersive X-ray analysis, vibrating sample magnetometer, Brunauer-Emmett-Teller and thermogravimetric analysis techniques. Batch adsorption studies of Pb(II) and Cd(II) on Fe3O4/NaP/NH2 were investigated. The effect of experimental parameters (including pH, adsorbent dose, heavy metals' concentration, adsorption time and temperature) was studied. The results indicated that Fe3O4/NaP/NH2 have a high removal percent for Pb(II) and Cd(II) (more than 95%). The metal-loaded Fe3O4/NaP/NH2 nanocomposite could be recovered from the aqueous solution by magnetic separation and regenerated easily by acid treatment. The experimental data were fitted to Langmuir, Freundlich and Dubinin-Kaganer-Radushkevich (DKR) isotherm models. The Langmuir equation showed a better correlation with the experimental data than the other two models. The adsorption kinetics data were found to follow the pseudo-second-order kinetic model for Pb(II) and pseudo-first-order for Cd(II). The thermodynamic parameters (ΔG, ΔH and ΔS) were measured and the negative value of Gibbs energy indicated that the adsorption process was spontaneous in nature. The in vitro antibacterial activity of Fe3O4/NaP/NH2 composites before and after removal of metals show good inhibition on bacterial growth against Bacillus subtilis (as Gram-positive bacteria) and Pseudomonas aeruginosa (as Gram-negative bacteria), and the antibacterial activity of it comparison with standard drugs.
Collapse
Affiliation(s)
- Mojgan Zendehdel
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
| | - Majid Ramezani
- Department of Chemistry, Arak Branch Islamic-Azad University, Arak, Iran
| | | | - Giuseppe Cruciani
- Department of Physics and Earth Sciences, University of Ferrara, Ferrara, Italy
| | - Azadeh Salmani
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
| |
Collapse
|
26
|
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.
Collapse
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.
| |
Collapse
|
27
|
Yadav KK, Kumar S, Pham QB, Gupta N, Rezania S, Kamyab H, Yadav S, Vymazal J, Kumar V, Tri DQ, Talaiekhozani A, Prasad S, Reece LM, Singh N, Maurya PK, Cho J. Fluoride contamination, health problems and remediation methods in Asian groundwater: A comprehensive review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 182:109362. [PMID: 31254856 DOI: 10.1016/j.ecoenv.2019.06.045] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 06/10/2019] [Accepted: 06/14/2019] [Indexed: 05/21/2023]
Abstract
In low concentration, fluoride is considered a necessary compound for human health. Exposure to high concentrations of fluoride is the reason for a serious disease called fluorosis. Fluorosis is categorized as Skeletal and Dental fluorosis. Several Asian countries, such as India, face contamination of water resources with fluoride. In this study, a comprehensive overview on fluoride contamination in Asian water resources has been presented. Since water contamination with fluoride in India is higher than other Asian countries, a separate section was dedicated to review published articles on fluoride contamination in this country. The status of health effects in Asian countries was another topic that was reviewed in this study. The effects of fluoride on human organs/systems such as urinary, renal, endocrine, gastrointestinal, cardiovascular, brain, and reproductive systems were another topic that was reviewed in this study. Different methods to remove fluoride from water such as reverse osmosis, electrocoagulation, nanofiltration, adsorption, ion-exchange and precipitation/coagulation were introduced in this study. Although several studies have been carried out on contamination of water resources with fluoride, the situation of water contamination with fluoride and newly developed technology to remove fluoride from water in Asian countries has not been reviewed. Therefore, this review is focused on these issues: 1) The status of fluoride contamination in Asian countries, 2) health effects of fluoride contamination in drinking water in Asia, and 3) the existing current technologies for defluoridation in Asia.
Collapse
Affiliation(s)
- Krishna Kumar Yadav
- Institute of Environment and Development Studies, Bundelkhand University, Kanpur Road, Jhansi, 284128, India
| | - Sandeep Kumar
- Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Quoc Bao Pham
- Department of Hydraulic and Ocean Engineering, National Cheng-Kung University, Tainan 701, Taiwan
| | - Neha Gupta
- Institute of Environment and Development Studies, Bundelkhand University, Kanpur Road, Jhansi, 284128, India
| | - Shahabaldin Rezania
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea
| | - Hesam Kamyab
- UTM Razak School of Engineering and Advanced Technology, Universiti Teknologi Malaysia, Malaysia
| | - Shalini Yadav
- Department of Civil Engineering Rabindranath Tagore University Raisen, Madhya Prades, India
| | - Jan Vymazal
- Czech University of Life Sciences Prague, Faculty of Environmental Sciences, Kamýcká 129, 165 21 Praha 6, Czech Republic
| | - Vinit Kumar
- Institute of Environment and Development Studies, Bundelkhand University, Kanpur Road, Jhansi, 284128, India
| | - Doan Quang Tri
- Sustainable Management of Natural Resources and Environment Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | | | - Shiv Prasad
- Centre for Environment Science and Climate Resilient Agriculture, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Lisa M Reece
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Neeraja Singh
- Department of Botany, University of Delhi, New Delhi, 110007, India
| | - Pradip Kumar Maurya
- Department of Zoology and Environmental Science, Gurukula Kangari Vishwavidyalaya, Haridwar, Uttarakhand, India
| | - Jinwoo Cho
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea
| |
Collapse
|
28
|
He Y, Zhang L, An X, Wan G, Zhu W, Luo Y. Enhanced fluoride removal from water by rare earth (La and Ce) modified alumina: Adsorption isotherms, kinetics, thermodynamics and mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 688:184-198. [PMID: 31229816 DOI: 10.1016/j.scitotenv.2019.06.175] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/22/2019] [Accepted: 06/11/2019] [Indexed: 05/25/2023]
Abstract
The removal of F- from aqueous solution using lanthanum and cerium modified mesoporous alumina (La/MA and Ce/MA) was studied, and characteration of the adsorbents by XRD, BET, XRF, FTIR, TEM, XPS and the pHZPC measurements were carried out. The adsorption was investigated in both batch and column adsorption systems. Batch experimental results showed that adsorption capacities of adsorbents were recorded in the following order: La/MA > Ce/MA > mesoporous alumina (MA). Besides, adsorption datas were fitted well by Sips isotherm model and Elovich kinetics model, and the maximum adsorption capacity of La/MA was 26.45 mg·g-1 in Sips model at the dosage of 2.0 g·L-1 and near neutral condition (pH = 6.0 ± 0.1). Moreover, thermodynamic parameters were illustrated that adsorption process of fluoride ion over La/MA was spontaneous and endothermic. In the adsorption process, the interaction between metal and fluoride, the adsorption capacity was increased due to form the bond of M···F (M = La or Ce). Furthermore, the influence of coexisted anions on F- removal was investigated, and it was indicated that removal efficiency was slightly affected by the presence of Cl- and NO3-, while SO42- and CO32- caused a sharp fall in removal efficiency. Column experiments results were indicated that time of break-through of La/MA was twice as much as that of MA.
Collapse
Affiliation(s)
- Yuxuan He
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Liming Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Xiao An
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Gengping Wan
- Research Center for Analysis and Measurement, Hainan University, Haikou 570228, PR China
| | - Wenjie Zhu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Yongming Luo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| |
Collapse
|
29
|
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]
|
30
|
Parashar K, Pillay K, Das R, Maity A. Fluoride Toxicity and Recent Advances in Water Defluoridation with Specific Emphasis on Nanotechnology. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-04474-9_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
|
31
|
Kang J, Gou X, Hu Y, Sun W, Liu R, Gao Z, Guan Q. Efficient utilisation of flue gas desulfurization gypsum as a potential material for fluoride removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 649:344-352. [PMID: 30176447 DOI: 10.1016/j.scitotenv.2018.08.416] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 08/29/2018] [Accepted: 08/29/2018] [Indexed: 06/08/2023]
Abstract
This study introduces the use of a waste by-product from wet limestone flue gas desulfurization as a potential material for fluoride removal. Systematic laboratory-scale experiments were tested to identify the fluoride removal performance and determine the underlying mechanism. Flue gas desulfurization (FGD) gypsum removes 93.31% of fluoride from 109 mg/L to 7.3 mg/L. Fluoride can be efficiently removed at the optimum pH range of 5-11. Kinetics analysis indicates that the theoretical fluoride capacity at 1 g/L FGD gypsum is 96.9 mg/g. Equilibrium speciation analysis indicates that the decrease of system pH to lower than 5 is unsuitable for the formation of calcium fluoride, and the increase of system pH to higher than 11 opposes calcium release from FGD gypsum. Thermodynamic analysis confirms the feasibility of converting calcium sulphate into calcium fluoride at pH > 5. FGD gypsum and precipitates were characterized to describe their surface morphology, elemental composition and crystalline phase. Results indicate that FGD gypsum removes fluoride through the combination of calcium with fluoride to generate calcium fluoride.
Collapse
Affiliation(s)
- Jianhua Kang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Xiaoqin Gou
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Yuehua Hu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China.
| | - Wei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China.
| | - Runqing Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Zhiyong Gao
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Qingjun Guan
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| |
Collapse
|
32
|
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]
|
33
|
Patra G, Das P, Chakraborty S, Meikap BC. Removal of fluoride from wastewater using HCl-treated activated alumina in a ribbed hydrocyclone separator. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2018; 53:601-608. [PMID: 29381416 DOI: 10.1080/10934529.2018.1429728] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Excessive fluoride concentration in wastewater is a major health concern worldwide. The main objective of wastewater treatment is to allow industrial effluents to be disposed of without danger to the human health and the natural environment. In this current study, experiments have been conducted to remove fluoride from aqueous solution using alumina and HCl (Hydrochloric acid) treated activated alumina in a continuous mode. A spiral rib was introduced in the cylindrical part of the conventional hydrocyclone to increase the performance, and the new hydrocyclone is dubbed as ribbed hydrocyclone. Experiments were carried out to analyze the performance of the ribbed hydrocyclone and compared the results with the conventional hydrocyclone of the same dimension. The efficiency of conventional and ribbed hydrocyclone at a slurry flow rate of 50 LPM (liter per minute) for the solid concentration of 1.4 wt% were 80% and 93.5% respectively. The cut size d50 of the conventional and ribbed hydrocyclone was 18 µm and 13 µm respectively at a slurry velocity of 50 LPM. Fluoride removal efficiency using alumina and HCl-treated alumina was also investigated in a continuous mode by the ribbed hydrocyclone. Maximum fluoride removal efficiency was 49.5%, and 80% for alumina and HCl-treated alumina for the initial concentration of 10 mg/L at a slurry flow rate of 50 LPM.
Collapse
Affiliation(s)
- Gayatree Patra
- a Department of Chemical Engineering , Indian Institute of Technology (IIT) , Kharagpur , West Bengal , India
| | - Priyam Das
- a Department of Chemical Engineering , Indian Institute of Technology (IIT) , Kharagpur , West Bengal , India
| | - S Chakraborty
- a Department of Chemical Engineering , Indian Institute of Technology (IIT) , Kharagpur , West Bengal , India
| | - B C Meikap
- a Department of Chemical Engineering , Indian Institute of Technology (IIT) , Kharagpur , West Bengal , India
- b Department of Chemical Engineering, School of Engineering, Howard College , University of Kwazulu-Natal (UKZN) , Durban , Kwazulu-Natal , South Africa
| |
Collapse
|
34
|
Shivaprasad P, Singh PK, Saharan VK, George S. Synthesis of nano alumina for defluoridation of drinking water. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.nanoso.2018.01.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
35
|
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.
Collapse
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
| |
Collapse
|
36
|
Ogata F, Nagai N, Kariya Y, Nagahashi E, Kobayashi Y, Nakamura T, Kawasaki N. Adsorption of Nitrite and Nitrate Ions from an Aqueous Solution by Fe–Mg-Type Hydrotalcites at Different Molar Ratios. Chem Pharm Bull (Tokyo) 2018; 66:458-465. [DOI: 10.1248/cpb.c17-01044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
| | | | | | | | | | | | - Naohito Kawasaki
- Faculty of Pharmacy, Kindai University
- Antiaging Center, Kindai University
| |
Collapse
|
37
|
Sahu S, Sahu UK, Patel RK. Synthesis of thorium–ethanolamine nanocomposite by the co-precipitation method and its application for Cr(vi) removal. NEW J CHEM 2018. [DOI: 10.1039/c7nj05074g] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Studies on the adsorption of Cr(vi) from water by a thorium ethanolamine nanocomposite.
Collapse
Affiliation(s)
- Sumanta Sahu
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Uttam Kumar Sahu
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Raj Kishore Patel
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| |
Collapse
|
38
|
Kinetic and thermodynamic studies for fluoride removal using a novel bio-adsorbent from possotia (Vitex negundo) leaf. J Anal Sci Technol 2017. [DOI: 10.1186/s40543-017-0132-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
39
|
Nayak B, Samant A, Patel R, Misra PK. Comprehensive Understanding of the Kinetics and Mechanism of Fluoride Removal over a Potent Nanocrystalline Hydroxyapatite Surface. ACS OMEGA 2017; 2:8118-8128. [PMID: 31457358 PMCID: PMC6645433 DOI: 10.1021/acsomega.7b00370] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 06/20/2017] [Indexed: 05/25/2023]
Abstract
Hydroxyapatite (HAp) was successfully synthesized from egg shells, a low cost and easily available biodegradable waste, by the precipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy, Fourier transform infrared, and Brunauer-Emmett-Teller (BET) surface area analysis. The surface area of HAp was found to be 144 m2/g with a crystalline size of 9-99 nm from the BET and XRD data. The maximum fluoride removal efficiency within 1 h using 0.3 g of the synthesized adsorbent at pH 6 was 95%. The adsorption of fluoride followed second-order kinetics, indicating that chemisorptions are the rate-limiting step. The experimental data were well fitted with Langmuir and Freundlich isotherms, validating both monolayer and multilayer sorption during the fluoride adsorption onto the porous HAp. The positive adsorption of F- ions at the HAp interface can be attributed to ion exchange/ion pairing and H-bonding below the pHpzc of HAp (pHpzc = 8), and the negative adsorption can be attributed to the electrostatic repulsion between O- and F- ions at alkaline pH. Both physical and chemical adsorption phenomena were also evidenced from the molecular parking area data. The results of a batch experiment show that the HAp synthesized from egg shells can be used as an effective, low-cost adsorbent for fluoride removal from a contaminated aqueous solution as well as groundwater compared to other adsorbents.
Collapse
Affiliation(s)
- Bishnupriya Nayak
- Centre
of Studies in Surface Science and Technology, School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768019, Odisha, India
| | - Amruta Samant
- Centre
of Studies in Surface Science and Technology, School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768019, Odisha, India
| | - Rajkishore Patel
- Department
of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Pramila K. Misra
- Centre
of Studies in Surface Science and Technology, School of Chemistry, Sambalpur University, Jyoti Vihar, Burla 768019, Odisha, India
| |
Collapse
|
40
|
Calcined Chitosan-Supported Layered Double Hydroxides: An Efficient and Recyclable Adsorbent for the Removal of Fluoride from an Aqueous Solution. MATERIALS 2017; 10:ma10111320. [PMID: 29149065 PMCID: PMC5706267 DOI: 10.3390/ma10111320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/02/2017] [Accepted: 11/04/2017] [Indexed: 12/07/2022]
Abstract
In this work, calcined chitosan-supported layered double hydroxides (CSLDO) were synthesized through a co-precipitation method that restrained the particles' aggregation of LDHs and exhibited huge specific surface areas, which can enhance the fluoride adsorption capacity. CSLDOs were characterized by physical and chemical methods and used for fluoride adsorption in an aqueous solution. The results indicated that the nanoparticles were constructed first and then assembled to form a porous and layered structure, and chitosan-supported layered double hydroxides (CSLDHs) calcined at 400 °C (CSLDO400) showed the highest specific surface area of 116.98 m²·g-1 and the largest pore volume of 0.411 cm³·g-1. CSLDO400 exhibited excellent adsorption performance at a wide pH range from 5 to 9 for fluoride. The adsorption kinetics indicated that the adsorption reached equilibrium after 120 min, and followed a pseudo-first-order model. It agreed well with the Langmuir isotherm with maximum adsorption amounts of 27.56 mg·g-1. The adsorption of fluoride ions was spontaneous and endothermic. Furthermore, CSLDO400 showed a high stability for fluoride removal; it could still achieve 68% removal for fluoride after repeating five times of adsorption-desorption cycles. This study demonstrated that CSLDO400 is a promising functional material to remove fluoride from surface/ground water.
Collapse
|
41
|
Chen J, Shu C, Wang N, Feng J, Ma H, Yan W. Adsorbent synthesis of polypyrrole/TiO2 for effective fluoride removal from aqueous solution for drinking water purification: Adsorbent characterization and adsorption mechanism. J Colloid Interface Sci 2017; 495:44-52. [DOI: 10.1016/j.jcis.2017.01.084] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 01/04/2017] [Accepted: 01/22/2017] [Indexed: 10/20/2022]
|
42
|
Sun W, Ma G, Sun Y, Liu Y, Song N, Xu Y, Zheng H. Effective treatment of high phosphorus pharmaceutical wastewater by chemical precipitation. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22799] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenquan Sun
- College of Urban Construction; Nanjing Tech University; Nanjing, 211800 China
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment; Nanjing Tech University; Nanjing, 211800 China
| | - Genchao Ma
- College of Urban Construction; Nanjing Tech University; Nanjing, 211800 China
| | - Yongjun Sun
- College of Urban Construction; Nanjing Tech University; Nanjing, 211800 China
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment; Nanjing Tech University; Nanjing, 211800 China
| | - Yang Liu
- College of Chemistry and Molecular Engineering; Nanjing Tech University; Nanjing, 211800 China
| | - Ninghui Song
- Nanjing Institute of Environmental Sciences; Ministry of Environmental Protection; Nanjing 210042 China
| | - Yanhua Xu
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment; Nanjing Tech University; Nanjing, 211800 China
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education; Chongqing University; Chongqing, 400045 China
| |
Collapse
|
43
|
An optimization study for defluoridation from synthetic fluoride solution using scale of Indian major carp Catla (Catla catla): An Unconventional Biosorbent. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.01.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
44
|
Removal of heavy metals and bacteria from aqueous solution by novel hydroxyapatite/zeolite nanocomposite, preparation, and characterization. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0908-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
45
|
Biswas G, Dutta M, Dutta S, Adhikari K. A comparative study of removal of fluoride from contaminated water using shale collected from different coal mines in India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:9418-9431. [PMID: 26620857 DOI: 10.1007/s11356-015-5815-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 11/16/2015] [Indexed: 06/05/2023]
Abstract
Low-cost water defluoridation technique is one of the most important issues throughout the world. In the present study, shale, a coal mine waste, is employed as novel and low-cost adsorbent to abate fluoride from simulated solution. Shale samples were collected from Mahabir colliery (MBS) and Sonepur Bazari colliery (SBS) of Raniganj coalfield in West Bengal, India, and used to remove fluoride. To increase the adsorption efficiency, shale samples were heat activated at a higher temperature and samples obtained at 550 °C are denoted as heat-activated Mahabir colliery shale (HAMBS550) and heat-activated Sonepur Bazari colliery shale (HASBS550), respectively. To prove the fluoride adsorption onto different shale samples and ascertain its mechanism, natural shale samples, heat-activated shale samples, and their fluoride-loaded forms were characterized using scanning electron microscopy, energy dispersive X-ray analysis, X-ray diffraction study, and Fourier transform infrared spectroscopy. The effect of different parameters such as pH, adsorbent dose, size of particles, and initial concentration of fluoride was investigated during fluoride removal in a batch contactor. Lower pH shows better adsorption in batch study, but it is acidic in nature and not suitable for direct consumption. However, increase of pH of the solution from 3.2 to 6.8 and 7.2 during fluoride removal process with HAMBS550 and HASBS550, respectively, confirms the applicability of the treated water for domestic purposes. HAMBS550 and HASBS550 show maximum removal of 88.3 and 88.5 %, respectively, at initial fluoride concentration of 10 mg/L, pH 3, and adsorbent dose of 70 g/L.
Collapse
Affiliation(s)
- Gargi Biswas
- Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, 713209, India
| | - Manjari Dutta
- Department of Earth and Environmental Studies, National Institute of Technology Durgapur, Durgapur, 713209, India
| | - Susmita Dutta
- Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, 713209, India.
| | - Kalyan Adhikari
- Department of Earth and Environmental Studies, National Institute of Technology Durgapur, Durgapur, 713209, India
| |
Collapse
|
46
|
Zhu J, Lin X, Wu P, Luo X. Pectin/Al2O3–ZrO2 core/shell bead sorbent for fluoride removal from aqueous solution. RSC Adv 2016. [DOI: 10.1039/c5ra26404a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pectin/Al2O3–ZrO2 core/shell beads were prepared for fluoride removal. A maximum adsorption capacity was 98.077 mg g−1, and the pectin/Al2O3–ZrO2 sorbent could be a potentially material in the fluoride removal by comparing with other sorbent.
Collapse
Affiliation(s)
- Jiuya Zhu
- School of Materials Science and Engineering
- Southwest University of Science and Technology
- Mianyang 621010
- China
- Engineering Research Center of Biomass Materials
| | - Xiaoyan Lin
- School of Materials Science and Engineering
- Southwest University of Science and Technology
- Mianyang 621010
- China
- Engineering Research Center of Biomass Materials
| | - Pengwei Wu
- School of Materials Science and Engineering
- Southwest University of Science and Technology
- Mianyang 621010
- China
| | - Xuegang Luo
- Engineering Research Center of Biomass Materials
- Ministry of Education
- Mianyang 621010
- China
| |
Collapse
|
47
|
|
48
|
Jadhav SV, Bringas E, Yadav GD, Rathod VK, Ortiz I, Marathe KV. Arsenic and fluoride contaminated groundwaters: A review of current technologies for contaminants removal. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 162:306-25. [PMID: 26265600 DOI: 10.1016/j.jenvman.2015.07.020] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 06/26/2015] [Accepted: 07/07/2015] [Indexed: 05/21/2023]
Abstract
Chronic contamination of groundwaters by both arsenic (As) and fluoride (F) is frequently observed around the world, which has severely affected millions of people. Fluoride and As are introduced into groundwaters by several sources such as water-rock interactions, anthropogenic activities, and groundwater recharge. Coexistence of these pollutants can have adverse effects due to synergistic and/or antagonistic mechanisms leading to uncertain and complicated health effects, including cancer. Many developing countries are beset with the problem of F and As laden waters, with no affordable technologies to provide clean water supply. The technologies available for the simultaneous removal are akin to chemical treatment, adsorption and membrane processes. However, the presence of competing ions such as phosphate, silicate, nitrate, chloride, carbonate, and sulfate affect the removal efficiency. Highly efficient, low-cost and sustainable technology which could be used by rural populations is of utmost importance for simultaneous removal of both pollutants. This can be realized by using readily available low cost materials coupled with proper disposal units. Synthesis of inexpensive and highly selective nanoadsorbents or nanofunctionalized membranes is required along with encapsulation units to isolate the toxicant loaded materials to avoid their re-entry in aquifers. A vast number of reviews have been published periodically on removal of As or F alone. However, there is a dearth of literature on the simultaneous removal of both. This review critically analyzes this important issue and considers strategies for their removal and safe disposal.
Collapse
Affiliation(s)
- Sachin V Jadhav
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai, 400019, India
| | - Eugenio Bringas
- Department of Chemical and Biomolecular Engineering, Universidad de Cantabria, Avda, Los Castros s/n. 39005, Santander, Spain
| | - Ganapati D Yadav
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai, 400019, India.
| | - Virendra K Rathod
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai, 400019, India
| | - Inmaculada Ortiz
- Department of Chemical and Biomolecular Engineering, Universidad de Cantabria, Avda, Los Castros s/n. 39005, Santander, Spain
| | - Kumudini V Marathe
- Department of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai, 400019, India
| |
Collapse
|
49
|
Velazquez-Jimenez LH, Vences-Alvarez E, Flores-Arciniega JL, Flores-Zuñiga H, Rangel-Mendez JR. Water defluoridation with special emphasis on adsorbents-containing metal oxides and/or hydroxides: A review. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.07.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
50
|
Mariappan R, Vairamuthu R, Ganapathy A. Use of chemically activated cotton nut shell carbon for the removal of fluoride contaminated drinking water: Kinetics evaluation. Chin J Chem Eng 2015. [DOI: 10.1016/j.cjche.2014.05.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|