Abstract

Heavy metal ions such as hafnium, zirconium, vanadium, nickel, iron, and uranium were separated from petroleum ash leach liquor using ion-exchange resins Dowex 1×8, A2S3B8, and Amberlite (IRA-420). The separation was studied using Fourier transform IR spectroscopy (FT-IR) to confirm the adsorption of the metal ions onto the organic resins. Possible reactions between the metal ions and organic resins were suggested on the basis of the FT-IR spectra. The results show that the Dowex resin takes up U, Hf, and Zr most efficiently. This fact can be attributed to the ability of the Dowex resin to reduce both vanadium(V) and iron(III) metal ions to the lower valence state. This reduction facilitates the absorption of U, Hf, and Zr ions. The results obtained by ICP-OES and FT-IR are compared.

中文翻译：

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使用有机树脂从石油灰液中分离重金属离子和FT-IR工艺研究

摘要

使用离子交换树脂Dowex 1×8，A2S3B8和Amberlite（IRA-420）将重金属离子（例如ha，锆，钒，镍，铁和铀）从石油灰分浸出液中分离出来。使用傅里叶变换红外光谱（FT-IR）研究了分离，以确认金属离子在有机树脂上的吸附。根据FT-IR光谱，建议金属离子与有机树脂之间可能发生反应。结果表明，Dowex树脂最有效地吸收了U，Hf和Zr。此事实可归因于Dowex树脂将钒（V）和铁（III）金属离子均还原为较低价态的能力。这种还原促进了U，Hf和Zr离子的吸收。比较了通过ICP-OES和FT-IR获得的结果。