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    Method and composition for sorbing toxic substances
    105.
    发明授权
    Method and composition for sorbing toxic substances 失效
    吸附有毒物质的方法和组成

    公开(公告)号：US08377310B2

    公开(公告)日：2013-02-19

    申请号：US12777331

    申请日：2010-05-11

    申请人： Joseph Iannicelli

    发明人： Joseph Iannicelli

    IPC分类号： C02F1/42

    CPC分类号： B01J20/06 ,  B01J20/0229 ,  B01J20/0259 ,  B01J20/0285 ,  B01J20/045 ,  B01J20/08 ,  B01J20/3078 ,  B01J20/3085 ,  B01J2220/4887 ,  C02F1/281 ,  C02F2101/20 ,  C02F2101/22 ,  C02F2103/06 ,  C02F2103/10 ,  C10G25/003 ,  Y10S95/90 ,  Y10S210/912 ,  Y10S210/913 ,  Y10S210/914

    摘要： Toxic substances such as heavy metals are extracted from a medium using a sorbent composition. The sorbent composition is derived by sulfidation of red mud, which contains hydrated ferric oxides derived from the Bayer processing of bauxite ores. Exemplary sulfidizing compounds are H2S, Na2S, K2S, (NH4)2S, and CaSx. The sulfur content typically is from about 0.2 to about 10% above the residual sulfur in the red mud. Sulfidized red mud is an improved sorbent compared to red mud for most of the heavy metals tested (Hg, Cr, Pb, Cu, Zn, Cd, Se, Th, and U). Unlike red mud, sulfidized red mud does not leach naturally contained metals. Sulfidized red mud also prevents leaching of metals when mixed with red mud. Mixtures of sulfidized red mud and red mud are more effective for sorbing other ions, such as As, Co, Mn, and Sr, than sulfidized red mud alone.

    摘要翻译： 使用吸附剂组合物从介质中提取有毒物质如重金属。 吸附剂组合物是通过红泥硫化产生的，该泥浆含有源于铝土矿的拜耳处理的水合氧化铁。 示例性硫化化合物是H 2 S，Na 2 S，K 2 S，（NH 4）2 S和CaS x。 硫含量通常比红泥中的残留硫高约0.2至约10％。 与大部分测试重金属（Hg，Cr，Pb，Cu，Zn，Cd，Se，Th和U）的红泥相比，硫化红泥是一种改进的吸附剂。 与红泥不同，硫化红泥不会浸出天然含有的金属。 硫化红泥还可防止与红泥混合时金属浸出。 硫化红泥和红泥的混合物比单独硫化红泥更有效地吸附其他离子，如As，Co，Mn和Sr。