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Kumar P, Kumar M, Barnawi AB, Maurya P, Singh S, Shah D, Yadav VK, Kumar A, Kumar R, Yadav KK, Gacem A, Ahmad A, Patel A, Alreshidi MA, Singh V, Yaseen ZM, Cabral-Pinto MMS, Vinayak V, Wanale SG. A review on fluoride contamination in groundwater and human health implications and its remediation: A sustainable approaches. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 106:104356. [PMID: 38158029 DOI: 10.1016/j.etap.2023.104356] [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: 11/08/2023] [Revised: 12/15/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
Contamination of drinking water due to fluoride (F-) is a major concern worldwide. Although fluoride is an essential trace element required for humans, it has severe human health implications if levels exceed 1.5 mg. L-1 in groundwater. Several treatment technologies have been adopted to remove fluoride and reduce the exposure risk. The present article highlights the source, geochemistry, spatial distribution, and health implications of high fluoride in groundwater. Also, it discusses the underlying mechanisms and controlling factors of fluoride contamination. The problem of fluoride-contaminated water is more severe in India's arid and semiarid regions than in other Asian countries. Treatment technologies like adsorption, ion exchange, precipitation, electrolysis, electrocoagulation, nanofiltration, coagulation-precipitation, and bioremediation have been summarized along with case studies to look for suitable technology for fluoride exposure reduction. Although present technologies are efficient enough to remove fluoride, they have specific limitations regarding cost, labour intensity, and regeneration requirements.
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Affiliation(s)
- Pankaj Kumar
- Department of Environmental Science, Parul Institute of Applied Sciences, Parul University, Vadodara, Gujarat 391760, India.
| | - Manoj Kumar
- Department of Hydro and Renewable Energy, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Abdulwasa Bakr Barnawi
- Department of Electrical Engineering, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
| | - Parul Maurya
- Department of Environmental Science & Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, Jharkhand, India
| | - Snigdha Singh
- Department of Environmental Science, Parul Institute of Applied Sciences, Parul University, Vadodara, Gujarat 391760, India
| | - Deepankshi Shah
- Department of Environmental Science, Parul Institute of Applied Sciences, Parul University, Vadodara, Gujarat 391760, India
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat 384265, India
| | - Anand Kumar
- School of Management Studies, Nalanda University, Rajgir, Bihar 803116, India
| | - Ramesh Kumar
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal, Madhya Pradesh 462044, India; Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah 64001, Iraq.
| | - Amel Gacem
- Department of Physics, Faculty of Sciences, University 20 Août 1955, Skikda 21000, Algeria
| | - Akil Ahmad
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat 384265, India
| | | | - Vipin Singh
- Department of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282005, India
| | - Zaher Mundher Yaseen
- Civil and Environmental Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Marina M S Cabral-Pinto
- Geobiotec Research Centre, Department of Geoscience, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Vandana Vinayak
- Diatom Nanoengineering and Metabolism Laboratory, School of Applied Science, Dr Harisingh Gour Central University, Sagar, Madhya Pradesh 470003, India
| | - Shivraj Gangadhar Wanale
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, Maharashtra 431606, India
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Li Y, Zhang J, Sun L, Zhao H, Jia X, Zhang Y, Li Y. Fluoride-Induced Sperm Damage and HuR-Mediated Excessive Apoptosis and Autophagy in Spermatocytes. Biol Trace Elem Res 2023; 201:295-305. [PMID: 35226278 DOI: 10.1007/s12011-022-03138-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/25/2022] [Indexed: 01/11/2023]
Abstract
It is critical to determine the mechanism underlying fluoride (F)-induced damage of the testes to develop appropriate strategies for monitoring and intervention. In the present study, exposure to 50 mg/L sodium fluoride (NaF) for 90 days damaged the normal structure of the testes and quality of the sperm, particularly the spermatocytes, and triggered overexpression of human antigen R (Elavl1/HuR) according to western blotting and immunofluorescence. Furthermore, 0.5 mM NaF exposure for 24 h exposure increased the proportion of apoptosis and expression of caspase-3 and caspase-9 in mouse spermatocytes (GC-2spd cell line), whereas inhibition of HuR reduced apoptosis and the expression of caspase-3 and caspase-9. Additionally, inhibition of HuR alleviated F-induced autophagy based on observation of the autophagy bodies, detection of autophagy activity, and analysis of the expression of the LC3II/LC3I and p62 proteins. These results reveal that excessive F can lead to overexpression of HuR, resulting in high levels of apoptosis and autophagy in spermatocytes. These findings improve the understanding of the mechanisms underlying F-induced male reproductive toxicity, and HuR may be explored as a treatment target for certain conditions. Excessive fluoride can induce overexpression of HuR in testis and result in excessive apoptosis and autophagy in spermatocytes as well as male reproductive damage, such as a decreased sperm count, decreased sperm motility, and increased deformity rate.
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Affiliation(s)
- Yanyan Li
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China.
| | - Jianbin Zhang
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Linlin Sun
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Hongyu Zhao
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Xiaohan Jia
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Yingri Zhang
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
| | - Yuanbin Li
- Department of Public Health and Preventive Medicine, Changzhi Medical College, Changzhi, Shanxi, 046011, People's Republic of China
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Huang L, Luo Z, Huang X, Wang Y, Yan J, Liu W, Guo Y, Babu Arulmani SR, Shao M, Zhang H. Applications of biomass-based materials to remove fluoride from wastewater: A review. CHEMOSPHERE 2022; 301:134679. [PMID: 35469899 DOI: 10.1016/j.chemosphere.2022.134679] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Fluoride is one of the essential trace elements for the human body, but excessive fluoride will cause serious environmental and health problems. This paper summarizes researches on the removal of fluoride from aqueous solutions using newly developed or improved biomass materials and biomass-like organic materials in recent years. These biomass materials are classified into chitosan, microorganisms, lignocellulose plant materials, animal attribute materials, biological carbonized materials and biomass-like organic materials, which are explained and analyzed. By comparing adsorption performance and mechanism of adsorbents for removing fluoride, it is found that carbonizing materials and modifying adsorbents with metal ions are more beneficial to improving adsorption efficiency and the adsorption mechanisms are various. The adsorption capacities are still considerable after regeneration. This paper not only reviews the properties of these materials for fluoride removal, but also focuses on the comparison of materials performance and fluoride removal mechanism. Herein, by discussing the improved adsorption performance and research technology development of biomass materials and biomass-like organic materials, various innovative ideas are provided for adsorbing and removing contaminants.
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Affiliation(s)
- Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Zhixuan Luo
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Xuexia Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Yian Wang
- Department of Chemical and Biological Engineering, Energy Institute, and Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jia Yan
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Wei Liu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Yufang Guo
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | | | - Minhua Shao
- Department of Chemical and Biological Engineering, Energy Institute, and Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China.
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Moussavi SP, Kadier A, Singh R, Ashoori R, Shirinkar M, Lu J, Zaidi NS, Sher F. Superior removal of humic acid from aqueous stream using novel calf bones charcoal nanoadsorbent in a reversible process. CHEMOSPHERE 2022; 301:134673. [PMID: 35461895 DOI: 10.1016/j.chemosphere.2022.134673] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/22/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
While the potable water disinfection regimen has significantly reduced waterborne diseases, development of disinfection byproducts (DBP) during this process has brought a global threat to the environment and human health. The most notorious water pollutant, humic acid (HA), transforms into carcinogenic byproducts during the disinfection process (chlorination) of water treatment. HA removal methods are neither economic nor widely available. This study addresses the most urgent global issue of HA removal by developing an innovative and self-regenerative process based on a low-cost and self-regenerative calf bone char (CBC) that removed 92.1-100% of HA. CBC-based HA removal has not been described yet. The developed CBC, as a super adsorbent of HA, was initially characterized by a scanning electron microscope. Various parameters of adsorption/desorption and self-regeneration of CBC adsorbent were experimentally determined. Results show that prepared CBC with a 112 m2/g surface area exhibited adsorption of 38.08 mg/g (HA = 20 mg/L, pH = 4.0) which is several folds higher than the typical amount of HA present in water. The 30 m reaction time was enough to remove HA which is the shorter HA time in comparison to other similar studies. The increase of HA from 0.5 to 5 g/L, raises % HA removal (36.7-99.8%) while a pH decrease (10-4) increases adsorption (12.3-98.3%). The adsorption data fitted well with the pseudo-second-order model and the Langmuir isotherm which demonstrate that adsorption takes place by a monolayer formation. Thermodynamic constants supported the endothermic, spontaneous and reversible nature of adsorption which can attain 100% HA removal. 100% regeneration of exhausted CBC by NaOH further supports the sustainability of the process. CBC as a new adsorbent material thus provides an economical and sustainable water pre-treatment procedure. The present study provides technical guidance for building a cost-effective and scalable process capable of providing clean water.
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Affiliation(s)
| | - Abudukeremu Kadier
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Raghuveer Singh
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | - Razieh Ashoori
- Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Shirinkar
- Department of Chemical Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Jun Lu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, China
| | - Nur Syamimi Zaidi
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor, Malaysia; Centre for Environmental Sustainability and Water Security (IPASA), Universiti Teknologi Malaysia (UTM), Skudai, Johor, Malaysia
| | - Farooq Sher
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom.
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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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Zhou W, Luo W, Liu D, Canavese F, Li L, Zhao Q. Fluoride increases the susceptibility of developmental dysplasia of the hip via increasing capsular laxity triggered by cell apoptosis and oxidative stress in vivo and in vitro. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 234:113408. [PMID: 35298972 DOI: 10.1016/j.ecoenv.2022.113408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 02/26/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
The etiology of developmental dysplasia of the hip (DDH) is multifactorial, including breech presentation and hip capsular laxity. In particular, hip laxity is the main contributor to DDH by changing the ratio and distribution of collagens. Also, fluoride (F) affects collagens from various tissue besides bone and tooth. To investigate the association of DDH and excessive F intake, we conducted this research in lab on cell and animal model simultaneously. We established animal model of combination of DDH and F toxicity. The incidence of DDH in each group was calculated, and hip capsules were collected for testing histopathological and ultrastructural changes. The primary fibroblasts were further extracted from hip capsule and treated with F. The expression of collagen type I and III was both examined in vivo and in vitro, and the level of oxidative stress and apoptosis was also tested identically. We revealed that the incidence of DDH increased with F concentration. Furthermore, the oxidative stress and apoptosis levels of hip capsules and fibroblasts both increased after F exposure. Therefore, this study shows that excessive F intake increases susceptibility to DDH by altering hip capsular laxity in vivo and in vitro respectively. We believe that F might be a risk factor for DDH by increasing hip laxity induced by triggering fibroblast oxidative stress and apoptosis.
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Affiliation(s)
- Weizheng Zhou
- Department of Pediatric Orthopaedics, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning 110004, China
| | - Wenting Luo
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning 110004, China
| | - Dan Liu
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning 110004, China
| | - Federico Canavese
- Department of Pediatric Orthopedics, Lille University Center, Jeanne de Flandres Hospital, Avenue Eugène-Avinée, Lille 59037, France
| | - Lianyong Li
- Department of Pediatric Orthopaedics, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning 110004, China.
| | - Qun Zhao
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning 110004, China
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Dhingra RS, Shah M. A holistic study on fluoride-contaminated groundwater models and its widespread effects in healthcare and irrigation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:60329-60345. [PMID: 34523101 DOI: 10.1007/s11356-021-16367-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Groundwater is a key resource in the world. Its importance is often undermined, despite the various applications which include irrigation, drinking, sanitation, and industrial uses. One of the contaminants of groundwater is fluoride or the fluorine ion. Fluoride is a common pollutant of water, carrying potential benefits and costs to various sectors. Fluoride contamination of groundwater can impact humans, animals, healthcare, and the agricultural sector in direct or indirect ways. This paper aims to establish the definition of fluoride contamination of groundwater and simultaneously provide an outline of a few common sources that may cause fluoride contamination. Furthermore, this study will lay out the impacts of fluoride-contaminated groundwater on two sectors: healthcare and agriculture/irrigation. This study will also summarize various other research projects conducted across the world, which deliver promising evidence to support the points made throughout the paper. In addition to a detailed analysis of the impacts of fluoride on the healthcare and agricultural sector, this study also evaluates few other challenges which this issue poses and how to overcome them in the near future. A summation of deflouridation techniques is included, along with the future scope pertaining to the field of fluoride contamination. Another objective of the study is to spread awareness about the various health impacts that fluoride contamination poses and encourages consumption of fluoride in accordance with the set limit of 0.5-1.5 mg/L. The motivation behind writing this review is to compile and document various researches, along with an address on this prevalent issue to minimize the detrimental impacts and potential health risks on the society. The results of this study help to minimize risks in the future and encourage scientists to come up with mitigation strategies to ensure a safer environment.
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Affiliation(s)
| | - Manan Shah
- Department of Chemical Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, 382426, India.
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Wang Y, Li A, Mehmood K, Hussain R, Abbas RZ, Javed MT, Chang YF, Hu L, Pan J, Li Y, Shi L, Tang Z, Zhang H. Long-term exposure to the fluoride blocks the development of chondrocytes in the ducks: The molecular mechanism of fluoride regulating autophagy and apoptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 217:112225. [PMID: 33864983 DOI: 10.1016/j.ecoenv.2021.112225] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 05/15/2023]
Abstract
Long-term exposure to excessive fluoride causes chronic damage in the body tissues and could lead to skeletal and dental fluorosis. Cartilage damage caused by excessive fluoride intake has gained wide attention, but how fluoride accumulation blocks the development of chondrocytes is still unclear. Here, we report a negative correlation between the length and growth plate width after NaF treatments via apoptosis and autophagy, with shrinkage of cells, nuclear retraction, dissolution of chondrocytes. Whereas, fluoride exposure had no significant effect on the number and distribution of the osteoclasts which were well aligned. More importantly, fluoride exposure induced apoptosis of tibial bone through CytC/Bcl-2/P53 pathways via targeting Caspase3, Caspase9, Bak1, and Bax expressions. Meanwhile, the Beclin1, mTOR, Pakin, Pink, and p62 were elevated in NaF treatment group, which indicated that long-term excessive fluoride triggered the autophagy in the tibial bone and produced the chondrocyte injury. Altogether, fluoride exposure induced the chondrocyte injury by regulating the autophagy and apoptosis in the tibial bone of ducks, which demonstrates that fluoride exposure is a risk factor for cartilage development. These findings revealed the essential role of CytC/Bcl-2/P53 pathways in long-term exposure to fluoride pollution and block the development of chondrocytes in ducks, and CytC/Bcl-2/P53 can be targeted to prevent fluoride induced chondrocyte injury.
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Affiliation(s)
- Yajing Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Aoyun Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Khalid Mehmood
- Faculty of Veterinary & Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Riaz Hussain
- Faculty of Veterinary & Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Rao Zahid Abbas
- Department of Parasitology, Faculty of Veterinary Science, University of Agriculture, Faisalabad 38040, Pakistan
| | - M Tariq Javed
- Department of Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad 38040, Pakistan
| | - Yung-Fu Chang
- College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Lianmei Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Jiaqiang Pan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Lijun Shi
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Hui Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
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9
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Recently Developed Adsorbing Materials for Fluoride Removal from Water and Fluoride Analytical Determination Techniques: A Review. SUSTAINABILITY 2021. [DOI: 10.3390/su13137061] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In recent years, there has been an increase in public perception of the detrimental side-effects of fluoride to human health due to its effects on teeth and bones. Today, there is a plethora of techniques available for the removal of fluoride from drinking water. Among them, adsorption is a very prospective method because of its handy operation, cost efficiency, and high selectivity. Along with efforts to assist fluoride removal from drinking waters, extensive attention has been also paid to the accurate measurement of fluoride in water. Currently, the analytical methods that are used for fluoride determination can be classified into chromatographic methods (e.g., ionic chromatography), electrochemical methods (e.g., voltammetry, potentiometry, and polarography), spectroscopic methods (e.g., molecular absorption spectrometry), microfluidic analysis (e.g., flow injection analysis and sequential injection analysis), titration, and sensors. In this review article, we discuss the available techniques and the ongoing effort for achieving enhanced fluoride removal by applying novel adsorbents such as carbon-based materials (i.e., activated carbon, graphene oxide, and carbon nanotubes) and nanostructured materials, combining metals and their oxides or hydroxides as well as natural materials. Emphasis has been given to the use of lanthanum (La) in the modification of materials, both activated carbon and hybrid materials (i.e., La/Mg/Si-AC, La/MA, LaFeO3 NPs), and in the use of MgO nanostructures, which are found to exhibit an adsorption capacity of up to 29,131 mg g−1. The existing analytical methodologies and the current trends in analytical chemistry for fluoride determination in drinking water are also discussed.
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Santesso MR, Oliveira FA, Tokuhara CK, Oliveira GSN, Levy FM, Antonio LS, Buzalaf MAR, Oliveira RC. Fluoride effects on cell viability and ENaC expression in kidney epithelial cells. Toxicol Mech Methods 2021; 31:566-571. [PMID: 34151709 DOI: 10.1080/15376516.2021.1938325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Fluoride (F) at micromolar (µM) concentrations induces apoptosis in several cell lines. Moreover, proteomic studies have shown major changes in the profile of proteins involved in signal transduction. These effects may negatively affect ion transport in the kidneys. The activity of epithelial sodium channels (ENaCs) is a limiting factor for sodium and water resorption in the kidneys, which is essential for the maintenance of the electrolyte balance and homeostasis of the body. Here we investigated the effects of F, at different concentrations (10, 40, 100, 200, and 400 μM), on the viability of renal epithelial cells (M-1), and ENaC expression. We showed that sodium fluoride (NaF) reduces cell viability in a concentration-dependent manner (p < 0.05) up to a 96-h time-point when compared to control. Sodium fluoride at moderate concentrations (100 and 200 μM), upregulated the ENaC subunit genes Scnn1a and Scnn1g, but not Scnn1b. Sodium fluoride downregulated all three ENaC subunit genes at a higher concentration of 400 μM (p < 0.05). Immunofluorescence analysis showed that Scnn1a and Scnn1g expression was decreased within 24 h of NaF treatment. After 48 h, NaF (400 μM) increased the expression of Scnn1a but not Scnn1g. However, NaF decreased the expression of Scnn1g at all studied concentrations. We conclude that F, at µM concentrations, modulates the expression of ENaC subunit genes, which is likely to significantly affect molecular signaling in kidney epithelial cells.
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Affiliation(s)
- Mariana R Santesso
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil
| | - Flávia A Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil.,Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Cintia K Tokuhara
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil
| | - Gabriela S N Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil
| | - Flávia M Levy
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil
| | - Lígia S Antonio
- Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Marília A R Buzalaf
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil
| | - Rodrigo C Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Bauru, Brazil
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Liang C, Gao Y, He Y, Han Y, Manthari RK, Tikka C, Chen C, Wang J, Zhang J. Fluoride induced mitochondrial impairment and PINK1-mediated mitophagy in Leydig cells of mice: In vivo and in vitro studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 256:113438. [PMID: 31672359 DOI: 10.1016/j.envpol.2019.113438] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/11/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
It is very important to explore the potential harm and underlying mechanism of fluoride due to the extensive distribution and the significant health risks of fluoride in environment. The objective of this study to investigate whether fluoride can induce mitochondrial impairment and mitophagy in testicular cells. For this, 40 male mice were randomly divided into four groups treated with 0, 0.6, 1.2, 2.4 mM NaF deionized water, respectively, for 90 days continuously. The results showed that mitophagy was triggered by F in testicular tissues, especially in the Leydig cells by transmission electron microscopy and mitophagy receptor PHB2 locations by immunofluorescence. Furthermore, TM3 Leydig cells line was employed and treated with 0, 0.125, 0.25, and 0.5 mM NaF for 24 h. The mitochondrial function indicators and mitophagy maker PHB2, COX IV and regulator PINK1 in transcript and protein levels in Leydig cells were examined by the methods of qRT-PCR, western blotting, and immunofluorescence co-localization. The results showed that fluoride decreased the mitochondrial membrane potential with a concomitant increase in the number of lysosomes. Meanwhile, fluoride exposure also increased the expressions of PINK1 and PHB2 in TM3 Leydig cells. These results revealed that fluoride could induce mitochondrial impairment and excessive PINK1/Parkin-mediated mitophagy in testicular cells, especially in Leydig cells, which could contribute to the elucidation of the mechanisms of F-induced male reproductive toxicity.
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Affiliation(s)
- Chen Liang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yan Gao
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yuyang He
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yongli Han
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Ram Kumar Manthari
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Chiranjeevi Tikka
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Chenkai Chen
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jianhai Zhang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China.
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12
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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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Herath HMAS, Kawakami T, Tafu M. Repeated Heat Regeneration of Bone Char for Sustainable Use in Fluoride Removal from Drinking Water. Healthcare (Basel) 2018; 6:healthcare6040143. [PMID: 30544814 PMCID: PMC6315924 DOI: 10.3390/healthcare6040143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/10/2018] [Accepted: 12/05/2018] [Indexed: 11/16/2022] Open
Abstract
The effectiveness of regenerated chicken bone char (CBC) in fluoride removal was investigated in the present study. Heat treatment was studied as the regeneration method. Results revealed that the CBC regenerated at 673 K yielded the highest fluoride adsorption capacity, hence, 673 K was the best regenerating temperature. The study continued up to five regeneration cycles at the best regenerating temperature; 673 K. The CBC accounted to 16.1 mg F/g CBC as the total adsorption capacity after five regeneration cycles. The recovery percentage of CBC reduced from 79% at the first regeneration to 4% after five regeneration cycles. The hydroxyapatite structure of CBC was not changed during the fluoride adsorption by five regeneration cycles. The ion exchange incorporated with the chemical precipitation occurred during the fluoride adsorption. The repeated regeneration of CBC is possible and it could be used as a low cost defluoridation technique to minimize the wastage of bone char.
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Affiliation(s)
- H M Ayala S Herath
- Department of Environmental Engineering, Faculty of Engineering, Toyama Prefectural University, Toyama 939-0398, Japan.
| | - Tomonori Kawakami
- Department of Environmental Engineering, Faculty of Engineering, Toyama Prefectural University, Toyama 939-0398, Japan.
| | - Masamoto Tafu
- National Institute of Technology, Toyama College, Toyama 939-8630, Japan.
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