Process for removing heavy metals from soil,申请号EP19960113209-传众专利搜索

Process for removing heavy metals from soil

申请公布号：EP0745438(A3)

申请号：EP19960113209

申请日期：1992.09.15

申请公布日期：1999.02.24

申请人：

COGNIS, INCORPORATED

发明人：FRISTAD, WILLIAM E.;VIRNIG, MICHAEL J.;CASSEL, JONATHAN M.;ELLIOTT, DANA K.

分类号：B03B5/00;B09B3/00;B09C1/02;B09C1/10;C01G13/00;C01G21/00;C22B1/00;C22B3/04;C22B3/06;C22B3/16;C22B3/46;C22B7/00;C22B13/00;C22B15/00;C22B25/06;C22B43/00;(IPC1-7):B09C1/02

主分类号：B03B5/00

摘要：<p>Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution comprised of an aqueous solution of an acid and a salt. Heavy metals are also efficiently removed from paint chips by washing with an aqueous acid. The heavy metals are recovered from the leachant be cementation.</p>