We describe an innovative approach based on alloying of metals to remove metal ions from drinking water. A novel adsorbent, gold nanoparticle supported on alumina, was developed for the removal of inorganic mercury from water. The observed adsorption capacity for mercury is 4.065 gm per gm of gold nanoparticles, which is ∼10 times higher metal adsorption capacity than previously reported adsorbents. Gold nanoparticle has been supported on alumina, at a capacity of 738 mg/kg alumina, for use in practical applications. Batch and column studies were done for adsorption analysis and a practical filter has been developed. The interaction between gold and mercury was studied using UV-vis, TEM, SEM, EDAX and XRD. The chemistry of metal alloying can be utilized for sequestration of mercury from drinking water. Established separation techniques for recovery of metals from the alloy can be utilized, making this a complete solution for drinking water applications.

中文翻译：

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使用金纳米粒子从饮用水中去除无机汞的实用解决方案

我们描述了一种基于金属合金化从饮用水中去除金属离子的创新方法。开发了一种新型吸附剂，即负载在氧化铝上的金纳米颗粒，用于去除水中的无机汞。观察到的汞吸附容量为每克金纳米粒子 4.065 克，比以前报道的吸附剂高出约 10 倍的金属吸附容量。金纳米颗粒已负载在氧化铝上，容量为 738 毫克/千克氧化铝，可用于实际应用。对吸附分析进行了批量和柱状研究，并开发了实用的过滤器。使用 UV-vis、TEM、SEM、EDAX 和 XRD 研究了金和汞之间的相互作用。金属合金化学可用于从饮用水中封存汞。