公开(公告)号：US5439562A

公开(公告)日：1995-08-08

申请号：US261862

申请日：1994-06-17

Applicant: Thomas S. Snyder ,  Dwight Goad

Inventor： Thomas S. Snyder ,  Dwight Goad

IPC: C25C1/08 ,  G21F9/00 ,  G21F9/06 ,  C25C1/06

CPC classification number: G21F9/06 ,  C25C1/08 ,  G21F9/004

Abstract: A novel method for decontaminating radio-contaminated nickel comprising, in an electrorefining cell having a semi-permeable membrane, cathodically depositing substantially contaminant-free nickel from an alkaline solution containing electrolyte, nickel ions, and radioactive ions. Preferably, the electrolyte solution is ammonium sulfate maintained at a pH of least about 10 (as measured at cell temperature). The electrorefining methods of the invention eliminate the need for separate dissolving and plating tanks, and may be operated by a single power source. These methods are particularly useful for remediating nickel contaminated by technetium, uranium and actinide metals.

Abstract translation: 一种用于净化放射性污染的镍的新方法，包括在具有半透膜的电解精制电池中，从含有电解质，镍离子和放射性离子的碱性溶液阴极沉积基本上无污染的镍。 优选地，电解质溶液是维持在至少约10的pH（在电池温度下测量）的硫酸铵。 本发明的电解精炼方法消除了对单独溶解和电镀槽的需要，并且可以由单个电源操作。 这些方法对于修复被锝，铀和锕系金属污染的镍特别有用。

公开(公告)号：US5640704A

公开(公告)日：1997-06-17

申请号：US506057

申请日：1995-07-24

Applicant: Thomas S. Snyder ,  David C. Grant ,  James T. Hallman ,  Martin Brownstein ,  Dwight Goad ,  Carol Kelly ,  Lori West

Inventor： Thomas S. Snyder ,  David C. Grant ,  James T. Hallman ,  Martin Brownstein ,  Dwight Goad ,  Carol Kelly ,  Lori West

IPC: A62D3/00 ,  A62D3/33 ,  A62D101/24 ,  A62D101/43 ,  A62D101/45 ,  C02F11/00 ,  C04B28/02 ,  G21F9/16 ,  G21F9/00

CPC classification number: A62D3/33 ,  C02F11/008 ,  C04B28/02 ,  G21F9/165 ,  A62D2101/24 ,  A62D2101/43 ,  A62D2101/45 ,  C02F2101/006 ,  C04B2111/70 ,  Y02W30/91

Abstract: The present invention provides methods and processes for immobilizing and solidifying harmful heavy metal and radioactive species within a waste material. The processes of the present invention are also particularly advantageous for immobilizing and solidifying nitrate compounds with a waste material. One embodiment of the present invention is a method that can be carried out by admixing the waste material with cement and a complexant compound to form a grout admixture. Preferably, the complexant compound is an iron compound that can form a hydrated iron oxide in the presence of an aqueous solution. This grout admixture is then allowed to cure and solidify. The grout admixture is placed within a suitable containment vessel for final storage and disposal.

Abstract translation: 本发明提供了在废料中固定和固化有害重金属和放射性物质的方法和方法。 本发明的方法对于用废料固定和固化硝酸盐化合物也是特别有利的。 本发明的一个实施方案是可以通过将废料与水泥和络合剂混合来混合以形成灌浆混合物来进行的方法。 优选地，络合剂化合物是在水溶液存在下可形成水合氧化铁的铁化合物。 然后使该灌浆混合物固化并固化。 将浆料混合物放置在合适的安全壳内，以进行最终的储存和处置。