Selective adsorption and recovery of Au(III) from three kinds of acidic systems by persimmon residual based bio-sorbent: A method for gold recycling from e-wastes

文献类型： 外文期刊

第一作者： Fan, Ruiyi

作者： Fan, Ruiyi;Xie, Feng;Guan, Xueliang;Zhang, Qinglin;Luo, Zhengrong;Xie, Feng

作者机构：

关键词： Selective recovery;e-waste;Persimmon tannin;Gold;Industrial application

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A low cost bio-sorbent, named "PPF resin'', was prepared by crosslinking the persimmon residual with formaldehyde. The adsorption behavior of PPF resin towards Au(III) from varied HCl and HNO_3 concentration solutions was studied. PPF resin could adsorb almost complete Au(III) from high acidic systems. The influence of dilution ratio, solid-liquid ratio and time towards Au(III) from aqua regia leached PCBs liquor was censored in detail by batch and continuous adsorption methods. The PPF resin before and after adsorption was characterized by FT-IR, XRD and XPS spectra which provided evidences for the reduction of Au(III) to Au(0) with a proposed mechanism of Au(III) adsorption-reduction process. After saturated column adsorption of 0.1 g PPF resin, 0.0506 g gold (purity: 99.9%) was obtained by the method of incineration. The present results provide a new approach for gold recovery from the secondary resources.

分类号： Q

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