Invention Grant
- Patent Title: Zero-valent metallic treatment system and its application for removal and remediation of polychlorinated biphenyls (PCBs)
- Patent Title (中): 零价金属处理系统及其应用于多氯联苯（PCBs）的去除和修复
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Application No.: US12465457Application Date: 2009-05-13
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Publication No.: US08163972B2Publication Date: 2012-04-24
- Inventor: Jacqueline W. Quinn , Christian A. Clausen , Cherie L. Geiger , Kathleen B. Brooks
- Applicant: Jacqueline W. Quinn , Christian A. Clausen , Cherie L. Geiger , Kathleen B. Brooks
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee Address: US DC Washington
- Agent Randall M. Heald; Jennifer P. Yancy
- Main IPC: A62D3/30
- IPC: A62D3/30 ; C02F5/02 ; C02F5/08 ; B09C1/08 ; B09C1/10 ; B09C1/02
Abstract:
PCBs are removed from contaminated media using a treatment system including zero-valent metal particles and an organic hydrogen donating solvent. The treatment system may include a weak acid in order to eliminate the need for a coating of catalytic noble metal on the zero-valent metal particles. If catalyzed zero-valent metal particles are used, the treatment system may include an organic hydrogen donating solvent that is a non-water solvent. The treatment system may be provided as a “paste-like” system that is preferably applied to natural media and ex-situ structures to eliminate PCBs.
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