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題 名 | The Adsorption of EDTA-Chelated Copper Ion in Aqueous Solution by an Activated Carbon Adsorption Column=以活性碳管柱吸附水溶液中EDTA螫合銅離子之研究 |
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作 者 | 張重; 顧洋; | 書刊名 | 中國工程學刊 |
卷 期 | 20:6 1997.11[民86.11] |
頁 次 | 頁651-659 |
分類號 | 460.025 |
關鍵詞 | 螫合銅去除; 吸附; 活性碳; 管柱實驗; Copper EDTA removal; Adsorption; Activated carbon; Column test; |
語 文 | 英文(English) |
中文摘要 | 本研究以活性碳吸附CuEDTA螫合離梨子進行一系列之管柱實驗,以期貨得更多之設計資 料,實驗結果顯示活性碳床之使用效率隨著增加之空床接觸時間(EBCT)而增強,但每單位重量 活性碳之吸附能量則隨著降低EBCT而提高;螫合銅之穿透曲線實驗結果分別以考慮表面反應之 BDST模式與考慮表面擴散之HSDM模式模擬,其中BDST模式之模擬結果顯示,BDST模式可描 述CuESTA在活性碳管柱之吸附行為,但式中之吸附速率係數(k)會隨著EBCT增加而變小,此 結果顯示BDST模式須進行修正才可用來預估在不同操作狀況下活性碳管柱之穿透時間;而HSDM 模式應用於管柱實驗之誤差大,顯示以活性碳管柱進行Cu-EDTA之吸附之速率主要仍由表面反應 來決定。 |
英文摘要 | A series of column adsorption experiments on the adsorption of EDTA-chelated copper by activated carbon were conducted to obtain more applicable design data. The efficiency of utilization of activated carbon bed improves with increasing empty bed contact time (EBCT). But the absorption capacity of activated carbon usually increases with decreasing EBCT value. Two different adsorption models, the Bed-Depth-Service-Time(BDST)model and Homogeneous Surface Diffu-sion Model (HSDM), are used to simulate the experimental data. The adsorption behavior of Cu-EDTA in an activated column can be de- scribed by the BDST model, but the fitted rate constant of adsorption (k) decreases with increasing EBCT, thus, it is necessary to modify the BDST model to further estimate the exhaust time of activated carbon under various conditions. The fitted results of the HSDM model indicate higher deviations to the experimental results, possibly because the adsorption rate is mainly determined by the surface reaction step. |
本系統中英文摘要資訊取自各篇刊載內容。