VERFAHREN ZUM ENTFERNEN SCHWERER METALLE AUS BÖDEN
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>
申请公布号
DE69222949(T2)
申请公布日期
1998.06.18
申请号
DE1992622949T
申请日期
1992.09.15
申请人
COGNIS, INC., SANTA ROSA, CALIF., US
发明人
FRISTAD, WILLIAM, E., SANTA ROSA, CA 95404, US;VIRNIG, MICHAEL, J., SANTA ROSA, CA 95404, US;CASSEL, JONATHAN, M., HALF MOON BAY, CA 94019, US;ELLIOTT, DANA, K., SANTA ROSA, CA 95404, US