公开(公告)号：US20240262719A1

公开(公告)日：2024-08-08

申请号：US18432517

申请日：2024-02-05

Applicant: PowerTech Water, Inc.

Inventor： Alan Rassoolkhani ,  Joseph Stieha ,  Timothy St. Onge

IPC: C02F1/461 ,  C02F1/467 ,  C02F101/20

CPC classification number: C02F1/46109 ,  C02F1/4678 ,  C02F2001/46133 ,  C02F2001/46152 ,  C02F2101/20 ,  C02F2201/46

Abstract: An electrochemical device for reducing a dissolved metal of a liquid stream includes a carbonaceous cathode surrounding a metal-containing anode and a separator arranged between the metal-containing anode and the carbonaceous cathode. The electrochemical device further includes either one of: a conductive cathode current collector housing on the carbonaceous cathode or a non-conductive cathode current collector housing on the carbonaceous cathode. The conductive cathode current collector housing includes at least one inlet and outlet for the liquid stream. The non-conductive cathode current collector housing includes at least one inlet and outlet for the liquid stream, and a metal shim arranged between the carbonaceous cathode and the non-conductive cathode current collector housing.

公开(公告)号：US20230031927A1

公开(公告)日：2023-02-02

申请号：US17932488

申请日：2022-09-15

Applicant: PowerTech Water, Inc.

Inventor： Lindsay Boehme ,  Cameron Lippert ,  James Richardson Landon ,  Alan Rassoolkhani ,  Jeffrey Rentschler

IPC: B01D61/48 ,  B01D71/02 ,  C02F1/461

Abstract: The present invention is directed to an electrochemical device for at least partially removing or reducing a target ionic species from an aqueous solution using faradic immobilization, the electrochemical device including at least one first electrode and at least one second electrode with different void fraction and surface area properties, due to differences in void fraction (also referred to as void ratio) of the at least one first and the at least one second electrode, water flows through an electrode with a high porosity, while the aqueous solution does not flow through an electrode with a low porosity. The asymmetry of the electrodes provides a desired voltage distribution across the device, which equates to a different voltage at each electrode, to control the speciation of the target ionic species at the anode and the cathode.

公开(公告)号：US20240132380A1

公开(公告)日：2024-04-25

申请号：US18078304

申请日：2022-12-09

Applicant: PowerTech Water, Inc.

Inventor： James Landon ,  Alan Rassoolkhani

IPC: C02F1/461 ,  C02F101/20

CPC classification number: C02F1/46109 ,  C02F2001/46142 ,  C02F2101/20 ,  C02F2201/46115

Abstract: An electrochemical device including at least one of a carbonaceous cathode, and at least one of a metal-containing anode. A separation distance between the carbonaceous cathode and the metal-containing anode is about 1 to about 5000 micrometers.

公开(公告)号：US20230183103A1

公开(公告)日：2023-06-15

申请号：US18078373

申请日：2022-12-09

Applicant: PowerTech Water, Inc.

Inventor： Alan Rassoolkhani ,  James Landon ,  Bradley Nightengale ,  Elliott Rushing ,  Cassie Roberts ,  Cameron Lippert

IPC: C02F1/461 ,  C09K13/04

CPC classification number: C02F1/46109 ,  C09K13/04 ,  C02F2001/46133 ,  C02F2001/46119 ,  C02F2101/20

Abstract: A method for removing a metal from a carbonaceous electrode includes providing a regeneration solution that includes an acid, an oxidizing agent, or a combination thereof. The method further includes applying the regeneration solution to the carbonaceous electrode, and oxidizing the metal on the surface of the carbonaceous electrode. The method also includes collecting the oxidized metal in the regeneration solution.

公开(公告)号：US20230009842A1

公开(公告)日：2023-01-12

申请号：US17369346

申请日：2021-07-07

Applicant: PowerTech Water Inc.

Inventor： Lindsay Boehme ,  Cameron Lippert ,  James Landon ,  Alan Rassoolkhani ,  Jeffrey Rentschler

IPC: C25C1/10 ,  C25C7/02

Abstract: The present invention is directed to an electrochemical device for at least partially removing or reducing a target ionic species from an aqueous solution using faradaic immobilization, the electrochemical device including at least one first electrode and at least one second electrode with different void fraction and surface area properties, due to differences in void fraction (also referred to as void ratio) of the at least one first and the at least one second electrode, water flows through an electrode with a high porosity, while the aqueous solution does not flow through an electrode with a low porosity. The asymmetry of the electrodes provides a desired voltage distribution across the device, which equates to a different voltage at each electrode, to control the speciation of the target ionic species at the anode and the cathode.