| 摘要 |
PCT No. PCT/GB93/02003 Sec. 371 Date May 16, 1994 Sec. 102(e) Date May 16, 1994 PCT Filed Sep. 24, 1993 PCT Pub. No. WO94/07800 PCT Pub. Date Apr. 14, 1994.Heavy metals are separated from aqueous media containing the same by contacting the said medium with finely divided iron oxide (Fe3O4) and finely divided ferrous sulphide, maintaining said contact until at least a substantial proportion of said heavy metal has become bound to said iron oxide and ferrous sulphide, and then separating the iron oxide and ferrous sulphide having heavy metal bound thereto from the aqueous medium. |
