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DOI : , Vol.20, No.1, 41 ~ 51, 2012
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| Title |
| Adsorption Characteristics of Nitrate Nitrogen by Coating Oak Charcoal with FeCl3 |
| 김정애 Jeong Ae Kim , 정경훈 Kyung Hoon Cheong , 신대윤 Dae Yun Shin , 최형일 Hyung Il Choi , 윤지현 Ji Hyun Yoon |
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| Abstract |
| In recent years, the nitrate nitrogen in lakes, rivers and underground water has become a serious issue. Charcoal processing is one of the techniques of effectively using wood chip. In this study, oak charcoal was coated with FeCl3 solution. The adsorption behavior of nitrate nitrogen was investigated from aqueous solution using coated oak charcoal. The removal efficiency of nitrate was increased with increasing of dosage of adsorbents. The degree of removal of nitrate nitrogen was found to be dependent on temperature and it is increased as the temperature increases. Adsorption equilibrium data of nitrate nitrogen on oak charcoal reasonably fitted Langmuir isotherm models. The adsorption energy obtained from D-R model was 10.3 kJ/mole at 20℃. indicating an ion exchange process as primary adsorption mechanism. The adsorbents was regenerated using KCI solution, and recovery rate was 75-76% at 1 mol of KCI. Overall, it is expected that the oak charcoal obtained by this method can contribute to the purification of water polluted nitrate nitrogen. |
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| Key Words |
| Oak Charcoal, Nirtate Nitrogen, Adsorption, Sorption Isotherm |
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