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頁籤選單縮合
題名 | 以活性碳吸附腐植酸之研究 |
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作者 | 余光昌; 何先聰; | 書刊名 | 技術學刊 |
卷期 | 7:3 1992.09[民81.09] |
頁次 | 頁315-325 |
分類號 | 443.96 |
關鍵詞 | 吸附; 活性碳; 腐植酸; |
語文 | 中文(Chinese) |
中文摘要 | 本研究探討烏山頭水庫中與底泥萃取出之腐植酸及商品化腐植酸中不同分子量之組成,與活性碳吸附去除時之吸附平衡與吸附速率等特性,並以簡易競爭吸附模式(SCAM)及均句表面擴散模式(HSDM)加以模擬, 推求出吸附平衡與速率之係數值。研究結果顯示:烏山頭水庫水中腐植酸可被吸附量及液膜傳輸係數值最高,而分子量組成、總酸度及竣基含量愈低,被吸附量及液膜傳輸係數值亦高。Williamson等之相關式適合推求本研究所萃取腐植酸之液膜傳輸係數值。愈低分子量之腐植酸被吸附速率及表面擴散係數值愈大,而在回分式及管柱吸附試驗中吸附速率主要係受表面擴散速率所影響。SCAM及HSDM模擬吸附平衡與速率曲線之偏差均甚低。 |
英文摘要 | The purpose of this study was to characterize the adsorption equilibrium and rates of the humic acids from Wu-Shan-Tou reservoir and commercials. The simple competitive adsorption model (SCAM) and homogeneous surface diffusion model (HSDM) were fitted to data of the adsorption tests to predict the adsorption equilibrium and kinetics. The results indicated that the values of liquid-film transfer coefficient and surface diffusion coefficient, as well as adsorption amount were decreased with the molecular weight, total acidity and carboxyl content of humic acids. Within the performance of batch and column adsorption rate tests, the adsorption rate of humic acids onto activated carbon was controlled by the rate of surface diffusion. SCAM and HSDM, as well as the relationship of Williamson were well to predict the adsorption equilibrium and kinetic parameters. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。