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removal of heavy metals, especially lead, from aqueous, competing ions containing media by use of amorphous tin and titaniumsilikaten

机译:通过使用非晶态锡和钛,从含水的含竞争离子的介质中去除重金属,特别是铅

摘要

A process for the removal of heavy metals such as lead, cadmium, zinc, chromium, arsenic and mercury from aqueous solutions containing one or more of said metals as well as competing ions such as calcium and/or magnesium by contacting said aqueous solution with amorphous titanium or tin silicates is disclosed. Said amorphous titanium and tin silicates are characterized by a silicon-to-titanium or tin molar ratio of from 1:4 to 1.9:1 and a cumulative desorption pore volume ranging from about 0.03 to about 0.25 cubic centimeters per gram.
机译:通过使水溶液与无定形物接触从含有一种或多种所述金属以及竞争性离子如钙和/或镁的水溶液中去除重金属如铅,镉,锌,铬,砷和汞的方法公开了钛或锡的硅酸盐。所述无定形钛和锡硅酸盐的特征在于硅与钛或锡的摩尔比为1∶4至1.9∶1,并且累积的解吸孔体积为约0.03至约0.25立方厘米/克。

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