Removal of Fluoride from Drinking Water Using Protonated Glycerol Diglycidyl Ether Cross-Linked Chitosan Beads

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dc.citation.epage216
dc.citation.issue2
dc.citation.spage205
dc.contributor.affiliationUniversity of Kelaniya
dc.contributor.authorPathirannehe, P. N. S.
dc.contributor.authorFernando, T. D.
dc.contributor.authorRajapakse, C. S. K.
dc.coverage.placenameЛьвів
dc.coverage.placenameLviv
dc.date.accessioned2024-01-09T10:19:11Z
dc.date.available2024-01-09T10:19:11Z
dc.date.created2021-03-16
dc.date.issued2021-03-16
dc.description.abstractОдержано фізично та хімічно модифікований хітозан та протоновані хітозанові кульки зшиті дигліцидиловим етером (GDCLCB/H+). Характеристику продуктів отримано за допомогою Фур‘є-спектроскопії та скануючої електронної мікроскопії. Встановлено, що оптимальна дефлуоруюча здатність GDCLCB/H+ спостерігається за початкової концентрації йонів флуору 15 мг/л, дозі адсорбенту 0,6 г, часі 30 хв і рН розчину в межах 5-7 за температури 303 ± 2 К. Показано, що результати рівноважної адсорбції добре узгоджуються з моделями ізотерми Ленгмюра та Фрейндліха. З ізотерми Ленгмюра для F- адсорбції визначено максимальну адсорбційну здатність, 2000 мг/кг, що є значно вищою величиною, ніж для немодифікованого хітозану (192,3 мг/кг) та більшості сорбентів на основі хітозану, відомих з літератури. На прикладі зразків води, відібраних в одній з провінцій Шрі-Ланка, показано, що GDCLCB/H+ можна використовувати як ефективний засіб для дефлуорування.
dc.description.abstractIn this study, physically and chemically modified chitosan; protonated glycerol diglycidyl ether cross-linked chitosan beads (GDCLCB/H+) were prepared and characterized using FTIR and SEM. The optimum defluoridation capacity (DC) of GDCLCB/H+ was observed at the initial F - ion concentration of 15 mg/l, adsorbent dosage of 0.6 g, contact time of 30 min and pH of the solution was in the range of 5–7 at 303 ± 2 K. The equilibrium adsorption data fitted well with Langmuir and Freundlich isotherm models. The maximum adsorption capacity (q 0), obtained from Langmuir isotherm for Fadsorption was found to be 2000 mg/kg, which was significantly higher than that of unmodified chitosan (192.3 mg/kg) and most of the chitosan-based sorbents reported in the literature. Water samples collected from Medawachchiya, Sri Lanka, were treated with the adsorbents and the results suggested that GDCLCB/H+could be used as an effective defluoridation agent.
dc.format.extent205-216
dc.format.pages12
dc.identifier.citationPathirannehe P. N. S. Removal of Fluoride from Drinking Water Using Protonated Glycerol Diglycidyl Ether Cross-Linked Chitosan Beads / P. N. S. Pathirannehe, T. D. Fernando, C. S. K. Rajapakse // Chemistry & Chemical Technology. — Lviv : Lviv Politechnic Publishing House, 2021. — Vol 15. — No 2. — P. 205–216.
dc.identifier.citationenPathirannehe P. N. S. Removal of Fluoride from Drinking Water Using Protonated Glycerol Diglycidyl Ether Cross-Linked Chitosan Beads / P. N. S. Pathirannehe, T. D. Fernando, C. S. K. Rajapakse // Chemistry & Chemical Technology. — Lviv : Lviv Politechnic Publishing House, 2021. — Vol 15. — No 2. — P. 205–216.
dc.identifier.doidoi.org/10.23939/chcht15.02.205
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/60728
dc.language.isoen
dc.publisherВидавництво Львівської політехніки
dc.publisherLviv Politechnic Publishing House
dc.relation.ispartofChemistry & Chemical Technology, 2 (15), 2021
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dc.relation.urihttps://www.slsi.lk/images/downloads/other/accredited_tests_1.pdf
dc.relation.urihttps://doi.org/10.1002/j.1551-8833.2003.tb10314.x
dc.rights.holder© Національний університет “Львівська політехніка”, 2021
dc.rights.holder© Pathirannehe PNS, Fernando TD, Rajapakse CSK, 2021
dc.subjectдефлуоруюча здатність
dc.subjectфлуор
dc.subjectGDCLCB/H+
dc.subjectdefluoridation capacity
dc.subjectfluoride
dc.subjectGDCLCB/H+
dc.titleRemoval of Fluoride from Drinking Water Using Protonated Glycerol Diglycidyl Ether Cross-Linked Chitosan Beads
dc.title.alternativeВидалення флуору з питної води з використанням протонованих хітозанових кульок зшитих дигліцидиловим етером
dc.typeArticle

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Chemistry & Chemical Technology. – 2021. – Vol. 15, No. 2