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題名 | 應用新穎超高交聯樹脂Macronet MN-100吸附去除水體中農藥納乃得之質量傳送及其再生=Mass Transfer Aspects of Adsorption Removal of Pesticide of Methomyl from Water Using Novel Hypercrosslinked Polymer of Macronet MN-100 and Its Regeneration |
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作者姓名(中文) | 許國恩; 張慶源; 張瓊芬; | 書刊名 | 國立臺灣大學工程學刊 |
卷期 | 96 2007.05[民96.05] |
頁次 | 頁15-30 |
專輯 | 環境工程專輯 |
分類號 | 445.256 |
關鍵詞 | 吸附; 超高交聯樹脂; 納乃得; Adsorption; Hypercrosslinked polymer; Methomyl; |
語文 | 中文(Chinese) |
中文摘要 | 本研究以新穎超高交聯樹脂Macronet MN-100(MN-100)吸附去除水中殘留之農藥納乃得。MN-100具相當大之表面積,其孔隙結構以微孔 為主。Freundich等溫吸附方程式所得之n[9349]大於1,顯示MN-100有利於吸附水中之納乃得。以假性二階方程式與Elovich方程式模擬完全攪拌 槽吸附動力行為時,可得高相關係數(r[feb4])與決斷係數(R[feb4])。針對納乃得在MN-100內之內部質量傳送阻力探討,使用表面擴散、孔 擴散及分枝孔擴散等三種傳統擴散模式皆能有效的描述納乃得在MN-100顆粒之內部質量傳送行為及其吸附動力。比較三種擴散模式模擬結果 之r[feb4]和R[feb4]值及其適用性,以表面擴散模式最為適宜。由於本吸附系統之外部質量傳送阻力亦不可忽略,故其質量傳送行為屬於模-表 面擴散同時控制。以Yoon and Nelson管柱吸附動力模式可以有效地模擬MN-100可有效的吸附去除水溶液中之納乃得。將耗竭失效(或已飽和) 後之MN-100於管柱中以甲醇進行再生,其再生效率可達100%。 |
英文摘要 | Novel hypercrosslinked polymer (Macronet MN-100 denoted as MN-100) was used as an adsorbent for the removal of pesticide (i.e., methomyl) from the aqueous solution. MN-100 possesses large specific surface areas and is microporous with large micropore volume. The adsorption equilibrium can be well fitted via Freundlich isotherm, giving a value of parameter n[9349]>1 which indicates that the adsorption of methomyl on MN-100 is favorable. The pseudo-second-order and Elovich rate equations and traditional diffusion models can well predict the adsorption kinetics of methomyl onto MN-100 in completely stirred tank reactor. Comparisons of the value of the correlation coefficients and determination coefficients and the applicabilities of the system parameters resulted from the simulation results for the three diffusion models were made. The results indicate that the surface diffusion model is most appropriate. The breakthrough curve of adsorption of methomyl in the column system can be well described via Yoon and nelson equation. Methomyl can be effectively removed via adsorption using MN-100. The exhausted (or saturated ) adsorbent can be completely regenerated using the organic solvent (i.e., methanol), without reducing its original adsorption capacity for methomyl. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。