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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Crushed concrete was used for the removal of fluoride from aqueous solution and its adsorption characteristics were investigated. Adsorption experiments have been conducted in batch conditions. From the experiments using crushed concrete thermally treated at different temperatures, it was found that thermal treatment on crushed concrete had a deleterious effect on the fluoride removal. Kinetic sorption test and model analysis showed that fluoride adsorption to crushed concrete was dependent on chemisorption. Equilibrium adsorption results followed the Langmuir adsorption isotherm model with adsorption capacity of 28.50 mg/g. The estimated thermodynamic parameters (ΔH°, ΔS° and ΔG°) indicated that the adsorption was spontaneous and endothermic. Additional batch experiments indicated that fluoride adsorption to crushed concrete was the highest at pH 3 and decreased with increasing pH. The effect of other anion on fluoride removal by crushed concrete followed the order of PO43- > HCO3- > SO42- ≅ NO3-. This study demonstrated that crushed concrete was proven to be an effective adsorbent with high adsorption capacity of fluoride and its use for the fluoride removal is economical and environmentally sustainable.
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참고문헌 (26)
참고문헌 신청
Mahramanlioglu, M / 2002 / Adsorption of fluoride from aqueous solution by acid treated spent bleaching earth / Journal of Fluorine Chemistry 115(1):41~47
Ayoob, S. / 2006 / Fluoride in drinking water : A review on the status and stress effects / Critical Reviews in Environmental Science and Technology 36(6):433~487
Eskandarpour, A. M / 2008 / Removal of fluoride ions from aqueous solution at low pH using schwertmannite / Journal of Hazardous Materials 152(2):571~579
Ndiaye, P. I / 2005 / Removal of fluoride from electronic industrial effluent by RO membrane separation / Desalination 173(1):25~32
Alkan, E / 2008 / Plasma modification of the anion-exchange membrane and its influence on fluoride removal from water / Separation and Purification Technology 61(3):455~460
Ayoob, S. / 2006 / Fluoride in drinking water : A review on the status and stress effects / Critical Reviews in Environmental Science and Technology 36(6):433~487
Eskandarpour, A. M / 2008 / Removal of fluoride ions from aqueous solution at low pH using schwertmannite / Journal of Hazardous Materials 152(2):571~579
Ndiaye, P. I / 2005 / Removal of fluoride from electronic industrial effluent by RO membrane separation / Desalination 173(1):25~32
Alkan, E / 2008 / Plasma modification of the anion-exchange membrane and its influence on fluoride removal from water / Separation and Purification Technology 61(3):455~460
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