Turhanen Petri A, Vepsäläinen Jouko J, Peräniemi Sirpa
School of Pharmacy,Biocenter Kuopio, University of Eastern Finland, P.O.Box 1627, FI-70211, Kuopio, Finland.
Sci Rep. 2015 Mar 11;5:8992. doi: 10.1038/srep08992.
A Novel approach to remove metals from aqueous solutions has been developed. The method is based on a resin free, solid, non-toxic, microcrystalline bisphosphonate material, which has very low solubility in water (59 mg/l to ion free Milli-Q water and 13 mg/l to 3.5% NaCl solution). The material has been produced almost quantitatively on a 1 kg scale (it has been prepared also on a pilot scale, ca. 7 kg) and tested successfully for its ability to collect metal cations from different sources, such as ground water and mining process waters. Not only was this material highly efficient at collecting several metal ions out of solution it also proved to be regenerable and reusable over a number of adsorption/desorption, which is crucial for environmental friendliness. This material has several advantages compared to the currently used approaches, such as no need for any precipitation step.
已开发出一种从水溶液中去除金属的新方法。该方法基于一种无树脂、固态、无毒的微晶双膦酸盐材料，其在水中的溶解度非常低（在去离子超纯水中为59毫克/升，在3.5%氯化钠溶液中为13毫克/升）。该材料已几乎以1千克规模定量生产（也已在中试规模约7千克下制备），并成功测试了其从不同来源（如地下水和采矿工艺用水）收集金属阳离子的能力。这种材料不仅在从溶液中收集多种金属离子方面效率很高，而且在多次吸附/解吸过程中被证明是可再生和可重复使用的，这对环境友好性至关重要。与目前使用的方法相比，这种材料有几个优点，比如无需任何沉淀步骤。
