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    • 7. 发明公开
    • 금속또는비금속의유체추출방법
    • 流体萃取金属或金属
    • KR1020000029571A
    • 2000-05-25
    • KR1019997000630
    • 1997-07-25
    • 아이다호 리서치 파운데이션, 아이엔씨.
    • 스마트네일지.광약화위헤린외이치엔엠.
    • C22B3/16
    • C22B3/0005C22B3/0043C22B7/006Y02P10/234Y10S210/909Y10S210/912
    • PURPOSE: Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO2, and a cheating agent is provided. CONSTITUTION: The cheating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO2 and the cheating agent comprises an oregano phosphorous cheating agent, particularly sulfur-containing oregano phosphorous cheating agents, including mixtures of cheating agents. Examples of cheating agents include monographs acid, dithiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process.
    • 目的:提供通过将材料暴露于流体溶剂,特别是超临界CO 2和螯合剂从固体或液体材料中提取准金属和金属物质的方法。 构成:螯合剂与物质形成螯合物,螯合物可溶于流体以允许物质从材料中除去。 在优选实施方案中,提取溶剂是超临界CO 2,螯合剂包括牛至磷螯合剂,特别是含硫的牛至磷作用剂,包括作弊剂的混合物。 作弊剂的实例包括单酸,二硫代次膦酸,亚硫酸氢钠,硫代磷酸及其混合物。 该方法提供了一种从工业废物溶液,特别是酸性溶液中去除金属和准金属的环境友好方法。 螯合物和超临界流体都可以再生并且回收污染物质以提供经济,有效的方法。