螯合交換樹脂處理含銅（Ⅱ）與鎳（Ⅱ）工業廢水

Treatment of Industrial Wastewaters Containing Cu（Ⅱ） and Ni （Ⅱ）Using Chelating Ion Exchange Resins

李俊奎(Jiunn-Kwei Li)

指導教授 ： 莊瑞鑫

元智大學/工程學院/化學工程與材料科學學系/碩士(2006年)

https://doi.org/10.6838/YZU.2006.00202

摘要

在工業廢水中，其中重金屬離子並不一定只呈現單一金屬之污染，總是會含有多種重金屬離子同時存在。本論文研究之目的在於探討利用螯合交換樹脂在何種操作條件下，可將重金屬自廢水中移除，然後再將重金屬從樹脂中脫除，以回收廢水中的重金屬。實驗將螯合交換樹脂加入重金屬廢水中，採批次反應及固定床實驗方式，藉由改變金屬濃度、溫度、脫除劑濃度、流速、床高及pH值加以探討。
由實驗結果得知，螯合樹脂交換Cu2+、Ni2+的能力隨著pH值、溫度與金屬濃度比例的增加而增加；IRC 748螯合樹脂交換Cu2+、Ni2+的反應過程為吸熱反應，可由改變溫度升高時其吸附量增加證明。此外，本研究使用EDTA、HCl、及CA水溶液做為脫除劑，以回收螯合交換樹脂中的Cu2+、Ni2+，並由實驗結果得知，脫除劑的效果以EDTA＞HCl＞CA。
在固定床交換方面，藉由改變重金屬廢水的流速、濃度、pH值及床高等參數進行實驗。並可由貫穿曲線得知貫穿所需時間隨著流速、濃度、pH值的增加成反比，而與床高成正比；在藉由處理效益對實廠應用做出成本評估。

關鍵字

離子交換 ； 鰲合樹脂

並列摘要

Many heavy metals exist at the same time in pollution that don’t occur by the single metal in industrial wastewater . The objective of this study that determined the optimal conditions , under which the heavy metals be removed from the wastewater by the chelating resins , and the heavy metals can be removed effectively from the loading chelating resins . Put the chelating resins in wastewater of heavy metals , and changed the concentration of metals and eluent , temperature , velocity , bed height , and pH value by the experiment of batch and fixed-bed .
The experimental results showed that the exchange capacities of Cu2+ and Ni2+ increased with increasing the ratio of Cu2+/Ni2+ concentration , temperature and pH value . The process of Cu2+ , Ni2+ exchange by IRC-748 chelating resins was endothermic reaction . That be proofed by exchange capacity increased with increasing temperature . Besides , this study used citric acid , EDTA and HCl solutions as the eluents to recover the Cu2+ and Ni2+ loaded in the chelating resins . EDTA solution was found to the most effectively than HCl than CA for this purpose .
Fixed-bed experiments were carried out as a function of velocity , feed concentration , and bed height . The experimental results showed that breakthrough time was inverse ratio with velocity , feed concentration and pH , and was direct ratio with bed height in breakthrough curves . Finally , use the results to evaluate the realistic becefit .

並列關鍵字

Ion-Exchange ； Chelating Resin

參考文獻

糜福龍，「幾丁聚醣-三聚磷酸螯合劑型樹脂對二價銅離子之吸附研究」，Chemistry (The Chinese Chem. Soc.,Taipei), 57(1), 11-24 (1999)。

王怡杰，「螯合劑存在對陽離子交換樹脂交換容量與分離效率之影響研究」，碩士論文，元智大學，中壢 (2000)。

陳偉，「無電鍍鎳稀釋鍍液中鎳離子之離子交換回收」，碩士論文，元智大學，中壢 (2003)。

胡瑀婷，「金屬離子在螯合樹脂上之交換平衡與動力學」，碩士論文，元智大學，中壢(2002)。

Bernabe L. R.; Hernan A. M.; Sandra V. “Adsorption behavior of metal ions by amidoxime chelating resin,” J. Appl. Polym. Sci., 77, 1994-1999 (2000).