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Fluoride Removal from Aqueous Solutions by NaOH-Modified Eucalyptus Leaves

Year: 1396
COI: JR_JEHSD-3-1_008
Language: EnglishView: 255
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Nahid Khoshnamvand - Nutritional Health Research Center , Lorestan University of Medical Sciences, Khorramabad, Iran.
Edris Bazrafshan - Department of Environmental Health, Torbat Heydarieh University of Medical Sciences, Torbat Heydarieh, Iran.
Bahram Kamarei - Nutritional Health Research Center , Lorestan University of Medical Sciences, Khorramabad, Iran


Introduction: Fluoride (F) and its compounds are widely used in industries in which fluoride overdose leads to various detrimental diseases. In this study the effect of NaOH-modified Eucalyptus leaves on fluoride removal from aqueous solutions as a natural adsorbent was investigated. Materials and Methods: The focus of this study was on the effects of parameters such as pH (2-12), initial concentration (5-30 mg/L), adsorbent dose (0.1-1 g/L) and temperature (25-45 0C). Fluoride residual was measured usingthe SPADNS method by a DR 5000 spectrophotometer. Results: The maximum adsorption capacity, at pH 2 was found to be 97 mg F/g with an adsorbent dosage of 0.5 g/L and an initial fluoride concentration of 20 mg/L. The adsorption equilibrium and kinetic data were in good agreement with Langmuir Model (R2 = 0.967) with qmax = 298 mg/g and pseudo-second order reaction (R2 = 0.999). Conclusion: Based on the results, NaOH-modified eucalyptus leaves were found to be able to remove fluoride from aqueous environments with good removal efficiency and adsorption capacity.


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Khoshnamvand, Nahid and Bazrafshan, Edris and Kamarei, Bahram,1396,Fluoride Removal from Aqueous Solutions by NaOH-Modified Eucalyptus Leaves,

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Type of center: علوم پزشکی
Paper count: 900
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