• 作者： 駱尚廉; JAMES O. LECKIE
• 作者服務機構： 國立台灣大學環境工程學研究所; 美國史丹福大學土木工程學系
• 中文摘要： 水溶液中之重金屬離子吸附於氧化物表面之反應與pH值極有關連，過去此類重金屬吸附研究多偏向吸附平衡後之探討，並未深入討論質量傳送現象，吸附劑之多孔性質或內質量傳送機制等。本文探討內、外質量傳送對鋅吸附於非結晶性氧化鋁／溶液界面之影響，藉由兩段式速率模式之應用，模擬動力吸附試驗之結果。
• 英文摘要： Adsorption of metal ions onto oxide surfaces from dilute aqueous solution is highly pH dependent.Most previous rate studies of metal ion adsorption were focused on an operational equilibrium time withoutregard to mass transfer phenomena, the porous nature of the adsorbate or diffusion mechanisms. In thispaper, the effects of external and internal mass transport limitations on zinc adsorption onto porousamorphous aluminum oxide/solution interfaces were studied. A modified two-stage rate model was de-veloped and used to interpret the time dependent experimental results.
• 中文關鍵字： zinc; adsorption; internal mass transport; film diffusion; amorphous aluminum oxide
• 英文關鍵字： --