查詢結果分析
相關文獻
- Effect of Complexing Agents on Extractive Separation of CD(II) and NI(II) From Acidic Sulfate Solution Using D2EHPA
- Effect of Complexing Agents on Extractive Separation of Co(Ⅱ) and Ni(Ⅱ) from Acidic Sulfate Solution Using Aliquat 336
- 染化酸性廢水處理中的萃取分離程序
- Preparation, Properties and Sorption Behavior of Impregnated Resins Containing Acidic Organophosphorus Extractants
- Separation of Rh(III), Pd(II) and Ir(IV) on Diethylaminoethyl Cellulose Anion Exchanger with Glycine as a Complexing Agent and Determination By Inductively Coupled Plasma Optical Emission Spectrometry
- 硫化物萃取劑純化廢料鈀溶液之研究
- 污染土壤中鉛萃取率與植物體濃度之相關性
- 無電鍍鎳反應行為及實驗速率式之探討
- 1,2--環己烷二酮二肟為錯合劑之吸附剝除伏安法在鎳、鈷微量分析上之應用
- 胺類萃取劑回收羧酸之萃取化學--以檸檬酸為例
頁籤選單縮合
題 名 | Effect of Complexing Agents on Extractive Separation of CD(II) and NI(II) From Acidic Sulfate Solution Using D2EHPA=探討添加錯合劑對以D2EHPA溶劑萃取分離硫酸水溶液中鎘鎳離子之影響 |
---|---|
作 者 | 林素霞; 黃建璋; | 書刊名 | 桃園創新學報 |
卷 期 | 33 2013.12[民102.12] |
頁 次 | 頁389-406 |
分類號 | 460.02 |
關鍵詞 | 萃取分離; 錯合劑; 萃取劑; 鎘鎳離子分離; Separation extraction; Complexing agents; D2EHPA; Cd and Ni; EDTA; |
語 文 | 英文(English) |
中文摘要 | 本研究探討添加各種錯合劑如EDTA (ethylenediaminetetraacetic acid ), IDA (iminodiacetic acid ) 和檸檬酸 (citrate)以D2EHPA 萃取劑萃取分離硫酸水溶液之鎘、鎳離子。實驗之操作變數有水相溶液之pH (2.5-6.5)、錯合劑對金屬離子之莫爾比 (0.5-1.5)、萃取劑濃度(0.05-0.2M)及反萃溶液之酸度(0.1-1M, H2SO4)。結果可以發現萃取分離率和水溶液之pH 有很大關係,和錯合劑與金屬之結合常數並不完全成正比。當水溶液之中存在一定量之錯合劑時能有效萃取分離鎘鎳離子,如在等金屬莫爾濃度時於pH 4-5.5 添加EDTA。在添加EDTA(�n>1)時共萃鎳金屬離子之量將有效的被降低。此方法對於應用在水溶液中含少量鎳(即多量鎘離子存在之水溶液)尤其具有潛力。 |
英文摘要 | Extractive separation of Cd2+/Ni2+ from aqueous sulfate solutions with water-soluble complexing agents of ethylenediaminetetraacetic acid (EDTA), iminodiacetic acid (IDA) and citrate using di-2-ethylhexyl phosphoric acid (D2EHPA) in kerosene was experimentally studied at 303 K. Experiments were carried out as a function of initial aqueous pH (2.0–6.0), the concentration ratio of complexing agent to the metal (0.5–1.5), the concentration of extractant and stripping acidities. It was shown that the extraction selectivity strongly depended on solution pH and was not completely related to the affinity of any metal with the complexing agents. When a certain level of complexing agent was present, highly effective separation could be achieved at an appropriate pH range, e.g., pH 4-5.5 with EDTA). The co-extraction of nickel was highly reduced by adding EDTA with a>1. The application potential of this method was highlighted for the separation of Cd2+ from binary mixtures in the presence of trace amount of Ni2+ due to its high selectivity and the smaller amount of the complexing agents needed. |
本系統中英文摘要資訊取自各篇刊載內容。