SYNTHESIS OF NANOCHITOSAN FOR THE REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTIONS: A STUDY OF ISOTHERMS, KINETICS, AND THERMODYNAMICS
Background: Fluorine can be a harmful element for human health. High concentrations of the fluoride ion (F) are poisonous and can damage the endocrine glands, thyroid, and liver. It can also hinder human growth, decrease intelligence, and cause digestive problems and fluorosis. Objective: The main o...
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| Veröffentlicht in: | Fluoride 2017-04, Vol.50 (2), p.256-268 |
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| creator | Naghizadeh, Ali Shahabi, Habibeh Derakhshani, Elham Ghasemi, Fatemeh Mahvi, Amir Hossein |
| description | Background: Fluorine can be a harmful element for human health. High concentrations of the fluoride ion (F) are poisonous and can damage the endocrine glands, thyroid, and liver. It can also hinder human growth, decrease intelligence, and cause digestive problems and fluorosis. Objective: The main objective of this study was to evaluate the effectiveness of nanochitosan for the removal of F from the aquatic environment. Method: The effects of various parameters such as pH, adsorbent dosage, initial concentration of F, temperature, and contact time on the removal of F were examined in a batch system. Results: The maximum adsorption capacity of the nanoparticles (9 mg F/g nanochitosan) occurred with pH=3, adsorbent dosage=0.25 g/L, and F concentration=20 mg/L. The adsorption process for the removal of F by nanochitosan was an exothermic reaction and followed the BET isotherm and the pseudo-second-order kinetic model. Conclusion: Nanochitosan has a relatively good capacity for the removal of F from aqueous solutions. |
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High concentrations of the fluoride ion (F) are poisonous and can damage the endocrine glands, thyroid, and liver. It can also hinder human growth, decrease intelligence, and cause digestive problems and fluorosis. Objective: The main objective of this study was to evaluate the effectiveness of nanochitosan for the removal of F from the aquatic environment. Method: The effects of various parameters such as pH, adsorbent dosage, initial concentration of F, temperature, and contact time on the removal of F were examined in a batch system. Results: The maximum adsorption capacity of the nanoparticles (9 mg F/g nanochitosan) occurred with pH=3, adsorbent dosage=0.25 g/L, and F concentration=20 mg/L. The adsorption process for the removal of F by nanochitosan was an exothermic reaction and followed the BET isotherm and the pseudo-second-order kinetic model. Conclusion: Nanochitosan has a relatively good capacity for the removal of F from aqueous solutions.</description><identifier>ISSN: 0015-4725</identifier><identifier>EISSN: 2253-4083</identifier><language>eng</language><publisher>Dunedin: International Society for Fluoride Research, Inc</publisher><subject>Adsorbents ; Adsorption ; Aqueous solutions ; Drinking water ; Fluorides ; Fluorine ; Hydroxyapatite ; Infertility ; Laboratories ; Polymers ; Studies ; Thermodynamics</subject><ispartof>Fluoride, 2017-04, Vol.50 (2), p.256-268</ispartof><rights>Copyright International Society for Fluoride Research, Inc. 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It can also hinder human growth, decrease intelligence, and cause digestive problems and fluorosis. Objective: The main objective of this study was to evaluate the effectiveness of nanochitosan for the removal of F from the aquatic environment. Method: The effects of various parameters such as pH, adsorbent dosage, initial concentration of F, temperature, and contact time on the removal of F were examined in a batch system. Results: The maximum adsorption capacity of the nanoparticles (9 mg F/g nanochitosan) occurred with pH=3, adsorbent dosage=0.25 g/L, and F concentration=20 mg/L. The adsorption process for the removal of F by nanochitosan was an exothermic reaction and followed the BET isotherm and the pseudo-second-order kinetic model. Conclusion: Nanochitosan has a relatively good capacity for the removal of F from aqueous solutions.</description><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Aqueous solutions</subject><subject>Drinking water</subject><subject>Fluorides</subject><subject>Fluorine</subject><subject>Hydroxyapatite</subject><subject>Infertility</subject><subject>Laboratories</subject><subject>Polymers</subject><subject>Studies</subject><subject>Thermodynamics</subject><issn>0015-4725</issn><issn>2253-4083</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNotj81OwzAQhC0EEqXwDpa4EsnJ2qnNzcoPsUi8Ik6QeqqS1DlUiJamvfPopMBpV9_s7GiuyCKKBAScSbgmC8ZCEfBVJG7J3TTtGAMVglqQb7e2TZE54yjm1GqLSWEadNrSHGs6S7TOKnzX5UXPyxZrk2Y0r7Gi-q3NsHXUYdk2Bq17ppq6pk3Xl1vjcHbXlXuir8ZmjUnmTduU_lJM11ZXM7snN2P3MfmH_7kkbZ41SRGU-GISXQaHUMIpiAG8GgRT4bBiqzAex7HnsexBcbkd5nZqqzqAWHHhBy77XnkPWy591_URYz0syePf38Nx_3X202mz25-Pn3PkJlSxEIIJyeAHsHdRfA</recordid><startdate>20170401</startdate><enddate>20170401</enddate><creator>Naghizadeh, Ali</creator><creator>Shahabi, Habibeh</creator><creator>Derakhshani, Elham</creator><creator>Ghasemi, Fatemeh</creator><creator>Mahvi, Amir Hossein</creator><general>International Society for Fluoride Research, Inc</general><scope>3V.</scope><scope>7XB</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AYAGU</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>M2O</scope><scope>MBDVC</scope><scope>PADUT</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope></search><sort><creationdate>20170401</creationdate><title>SYNTHESIS OF NANOCHITOSAN FOR THE REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTIONS: A STUDY OF ISOTHERMS, KINETICS, AND THERMODYNAMICS</title><author>Naghizadeh, Ali ; 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High concentrations of the fluoride ion (F) are poisonous and can damage the endocrine glands, thyroid, and liver. It can also hinder human growth, decrease intelligence, and cause digestive problems and fluorosis. Objective: The main objective of this study was to evaluate the effectiveness of nanochitosan for the removal of F from the aquatic environment. Method: The effects of various parameters such as pH, adsorbent dosage, initial concentration of F, temperature, and contact time on the removal of F were examined in a batch system. Results: The maximum adsorption capacity of the nanoparticles (9 mg F/g nanochitosan) occurred with pH=3, adsorbent dosage=0.25 g/L, and F concentration=20 mg/L. The adsorption process for the removal of F by nanochitosan was an exothermic reaction and followed the BET isotherm and the pseudo-second-order kinetic model. 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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Adsorbents Adsorption Aqueous solutions Drinking water Fluorides Fluorine Hydroxyapatite Infertility Laboratories Polymers Studies Thermodynamics |
| title | SYNTHESIS OF NANOCHITOSAN FOR THE REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTIONS: A STUDY OF ISOTHERMS, KINETICS, AND THERMODYNAMICS |
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