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