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1. 发明专利

AU6185396A Process for the recovery of heavy metals such as lead from metal contaminated soil 未知
公开(公告)号：AU6185396A
公开(公告)日：1997-02-10
申请号：AU6185396
申请日：1996-07-04
申请人： HOLBEIN BRUCE E
发明人： HOLBEIN BRUCE E
IPC分类号： B03D1/012 , B09C1/02 , C02F9/00 , C22B3/16 , C22B3/34 , B09C1/04 , A62D3/00 , C22B3/00 , C02F11/00
摘要： A process for decontaminating a metal contaminated soil aggregate wherein at least one water soluble dialkyldithiocarbamate is admixed with an initial soil slurry so as to obtain a product aqueous soil slurry comprising one or more water insoluble metal-dialkyldithiocarbamate complexes which insoluble complexes may then be physically separated from the soil slurry to leave behind a product having a metal contamination level lower than that of the initial contaminated soil.

2. 发明专利

CA2223052A1 PROCESS FOR THE RECOVERY OF HEAVY METALS SUCH AS LEAD FROM METAL CONTAMINATED SOIL 未知
公开(公告)号：CA2223052A1
公开(公告)日：1997-01-30
申请号：CA2223052
申请日：1996-07-04
申请人： HOLBEIN BRUCE E
发明人： HOLBEIN BRUCE E
IPC分类号： B03D1/012 , B09C1/02 , C02F9/00 , C22B3/16 , C22B3/34 , B09C1/04
摘要： A process for the decontamination of a metal contaminated soil aggregate so as to obtain a product comprising a treated soil component having a metal content lower than that of the metal contaminated soil aggregate, the metal contaminated soil aggregate comprising at least one metal selected from the group comprising Pb, Hg, Cu, Cd, Zn, Ag, Ni, Co, Ga and Cr, the contaminated soil aggregate comprising a classified soil fraction representing soil particles having a size of from 0.15 mm and smaller, comprising: providing an initial aqueous soil slurry comprising the contaminated soil aggregate, admixing at least one water soluble dialkyldithiocarbamate with the initial soil slurry so as to obtain a product aqueous soil slurry comprising one or more water insoluble metal-dialkyldithiocarbamate complexes, and separating one or more of the insoluble metal-dialkylthiocarbamate complexes from the product aqueous soil slurry so as to obtain a treated product aqueous slurry comprising a treated soil component having a metal content lower than that of the metal contaminated soil aggregate, wherein the metal moiety of the one or more water insoluble metal-dialkyldithiocarbamate complexes is a member of the group comprising Pb, Hg, Cu, Cd, Zn, Ag, Ni, Co, Ga and Cr.

3. 发明专利

CA2057217A1 PROCESS FOR THE DECONTAMINATION OF TOXIC, HEAVY-METAL CONTAINING SOILS 未知
公开(公告)号：CA2057217A1
公开(公告)日：1992-06-12
申请号：CA2057217
申请日：1991-12-06
申请人： HOLBEIN BRUCE E , KIDBY DENIS K
发明人： HOLBEIN BRUCE E , KIDBY DENIS K
IPC分类号： B09C1/02 , C22B3/16 , B08B3/08

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