• 作者： Lai, Y.C.; Wei, W.Y.; Ju, Y.H.et al.
• 中文摘要： 本研究以桶狀旋轉反應器探討pH值、鋁粒子添加量及EDTA濃度對鋁粒子置換螯合銅之反應動力的影響。事實證明動力模式與實驗結果很吻合,其中誘導時間的成因是由於銅表面沈積量達到穩態所需要的成長時間。速率常數隨著pH值增加而減少,但與EDTA的存在無關,且速率常數與鋁添加量成正比。EDTA的存在相當程度的減緩了置換的速率,且置換速率隨著EDTA濃度的增加而減小,又沈積銅的結構與孔洞擴散對銅物質的擴散與鋁的溶解應有相當的效應。
• 英文摘要： Copper recovery from EDTA containing solutions by cementation on aluminum particles was studied in a laboratory scale rotary drum reactor. The kinetics was investigated as a function of variables such as hydrogen ion concentration (pH), aluminum charge, and EDTA concentration. The kinetic model agrees very well with the experimental data and the induction time is due to the time needed for the growth of steady state copper deposit. The specific rate constant decreases with the increase of pH independent of the presence of EDTA. The specific rate constant is proportional to aluminum charge. The presence of EDTA has dramatic influence on the reduction of cementation rate. It is found that cementation rate decreases with the increasing concentration of EDTA. The structure of deposit and then the pore diffusion should have a pronounced effect on the diffusion of copper species and the dissolution of aluminum.
• 中文關鍵字： 伸乙二胺四乙酸; 氮基三乙酸; 桶狀旋轉反應器; 鋁; 銅
• 英文關鍵字： Ethylenediaminetetraacetate (Edta); Nitrilotriacetate (Nta); Rotary Drum Reactor; Aluminum; Copper