FRISTAD, WILLIAM, E.,VIRNIG, MICHAEL, J.,CASSEL, JONATHAN, M.,ELLIOTT, DANA, K.
申请号：
WO1992US07657
公开号：
WO9306952(A2)
申请日:
1992.09.15
申请国别(地区):
世界知识产权组织国际局
年份:
1993
代理人:
摘要：
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 by cementation.
