公开(公告)号：US20240352597A1

公开(公告)日：2024-10-24

申请号：US18305221

申请日：2023-04-21

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Abeer ALARAWI ,  Norah ALJURYYED ,  Murtadha J. ALTAMMAR

IPC: C25B9/50 ,  C02F1/30 ,  C02F1/461 ,  C02F1/467 ,  C25B1/04 ,  C25B1/55 ,  C25B9/19 ,  C25B11/081 ,  C25B11/087 ,  H01L31/18

CPC classification number: C25B9/50 ,  C02F1/30 ,  C02F1/46109 ,  C02F1/4672 ,  C25B1/04 ,  C25B1/55 ,  C25B9/19 ,  C25B11/081 ,  C25B11/087 ,  H01L31/1804 ,  C02F2001/46142 ,  C02F2103/365 ,  C02F2201/46115 ,  C02F2305/10 ,  H01L31/109

Abstract: A photoelectrochemical system may be utilized for processing of wastewater to hydrogen. For example, a method for hydrogen production from wastewater may include: providing a photocathode electrically connected by a wire to a photocatalyst, where both the photocathode and the photocatalyst are at least partially immersed in an electrolyte solution that comprises an aqueous fluid having wastewater at least partially dissolved therein; illuminating the photocathode with first light thereby causing the photocathode to generate a first plurality of electron-electron hole pairs, wherein the photocathode comprises a silicon-based heterojunction; illuminating a photocatalyst with second light thereby causing the photocathode to generate a second plurality of electron-electron hole pairs, wherein the photocatalyst comprises a semiconductor; and photochemically converting the wastewater to hydrogen gas and oxygen.

公开(公告)号：US20240228339A1

公开(公告)日：2024-07-11

申请号：US18557030

申请日：2022-05-04

Applicant: Battelle Energy Alliance, LLC

Inventor： Qiang Wang ,  Luis A. Diaz Aldana ,  Daniel M. Ginosar ,  Meng Shi

IPC: C02F1/467 ,  C02F1/461 ,  C02F101/20 ,  C02F103/16 ,  C02F103/34

CPC classification number: C02F1/4676 ,  C02F1/46109 ,  C02F2001/46138 ,  C02F2001/46161 ,  C02F2101/203 ,  C02F2103/16 ,  C02F2103/34 ,  C02F2201/46115 ,  C02F2209/06 ,  C02F2209/22

Abstract: A method of removing impurities using an electrochemical membrane apparatus comprising introducing a leaching solution into an electrochemical membrane reactor. The leaching solution of the electrochemical apparatus comprises copper, aluminum, iron, cobalt, manganese, and nickel. The electrochemical membrane reactor comprises at least one positive electrode and at least one negative electrode, and the leaching solution is in contact with the at least one negative electrode. A current is applied through the electrochemical membrane reactor to adjust a pH of the leaching solution and copper is deposited on the at least one negative electrode. The aluminum and the iron are removed from the leaching solution, and the cobalt, the manganese, and the nickel are recovered from the leaching solution. An electrochemical membrane apparatus including an electrochemical membrane reactor is also disclosed.

公开(公告)号：US20240140835A1

公开(公告)日：2024-05-02

申请号：US18478884

申请日：2023-09-29

Applicant: SK INNOVATION CO., LTD.

Inventor： Joong Min PARK

IPC: C02F1/463 ,  C02F1/461

CPC classification number: C02F1/463 ,  C02F1/46109 ,  C02F2001/46123 ,  C02F2001/46133 ,  C02F2101/105 ,  C02F2201/46115 ,  C02F2201/4612

Abstract: According to an embodiment of the present disclosure, an upflow electrochemical coagulation reactor is provided. The upflow electrochemical coagulation reactor comprises a cathode fixed inside the reactor; at least one movable anode positioned at a predetermined distance from the cathode; a sensor configured to sense a change in the distance between the cathode and the anode; a controller configured to make the distance between the cathode and the anode constant while adapting to a change in the distance between the cathode and the anode sensed by the sensor; and a first separator and a second separator, the first separator being positioned above the second separator; and a sludge outlet being in fluid communication with the second separator for sludge delivery therebetween. By using the upflow electrochemical coagulation reactor, power-efficient removing of low-concentration contaminants present in wastewater can be performed.

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：US20240124335A1

公开(公告)日：2024-04-18

申请号：US18264896

申请日：2022-02-09

Applicant: GENIO SRL

Inventor： Stefano CAVALLI ,  Marco TREVISAN

IPC: C02F1/461 ,  C25B1/04 ,  C25B9/21 ,  C25B11/03 ,  C25B11/043 ,  C25B11/046 ,  C25B15/08

CPC classification number: C02F1/4618 ,  C02F1/46109 ,  C25B1/04 ,  C25B9/21 ,  C25B11/03 ,  C25B11/043 ,  C25B11/046 ,  C25B15/087 ,  C02F2103/08 ,  C02F2201/46115

Abstract: The invention relates to a device and a process for the desalination of NaCl solutions employing a three-chamber electrochemical cell separated by relative ion exchange membranes, namely a succession of a cathode chamber, a cation exchange membrane, a central chamber for the saline solution, an anion exchange membrane and an anode chamber. The oxidation of OH− and the reduction of H3O+ under the formation of OH− and H2 causes the passage of Na and Cl− ions from the central chamber to the other chambers, thereby reducing the salt concentration. The feeding of the cathode chamber can be managed in a circuit with the insertion of a carbonation reactor to reduce the concentration of NaOH and eliminate CO2 from the air. Under certain conditions, the chlorides entering the anode chamber undergo oxidation and the chlorine formed therein reacts with water to produce HCl and HClO.

公开(公告)号：US20230406734A1

公开(公告)日：2023-12-21

申请号：US18037077

申请日：2021-11-12

Applicant: Evoqua Water Technologies LLC

Inventor： Jacob Telepciak ,  Jonathan Wood ,  Krishna Kamath ,  Joshua Griffis ,  Nicholas Armstrong

IPC: C02F1/469

CPC classification number: C02F1/469 ,  C02F2101/108 ,  C02F2201/002 ,  C02F2201/46115

Abstract: Electrochemical water treatment devices are disclosed. The device includes an electrochemical separation module fluidly connectable to the source of water to be treated. The electrochemical separation module includes a first electrode, a second electrode, and a plurality of dilution compartments. Each of the dilution compartments includes a first region of ion exchange media having a first average particle size, a second region of ion exchange media having a second average particle size, and a third region of ion exchange media having a third average particle size. A volume of the second region of ion exchange media being greater than or equal to a total volume of the first and third regions of ion exchange media. Methods of facilitating treatment of water containing weakly ionized species, e.g., dissolved boron containing species and dissolved silica containing species, are disclosed. Electrochemical separation modules are also disclosed.

公开(公告)号：US11802063B2

公开(公告)日：2023-10-31

申请号：US16491753

申请日：2018-03-06

Applicant: Evoqua Water Technologies LLC

Inventor： George Gu ,  Simon Paul Dukes ,  Joshua Griffis ,  Michael Shaw

IPC: C02F1/467 ,  C02F1/461 ,  C25B9/23 ,  C02F103/08 ,  C25B1/26 ,  C25B15/02 ,  C25B15/031 ,  C25B9/17 ,  C25B15/029 ,  C25B1/30 ,  C25B1/04

CPC classification number: C02F1/4674 ,  C02F1/46104 ,  C02F2103/08 ,  C02F2201/4613 ,  C02F2201/4614 ,  C02F2201/46115 ,  C02F2201/46135 ,  C02F2201/46145 ,  C02F2201/46175 ,  C02F2209/04 ,  C02F2209/06 ,  C02F2209/23 ,  C02F2209/30 ,  C02F2209/40 ,  C02F2303/04 ,  C25B1/04 ,  C25B1/26 ,  C25B1/30 ,  C25B9/17 ,  C25B9/23 ,  C25B15/02 ,  C25B15/029 ,  C25B15/031

Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.

公开(公告)号：US11739009B2

公开(公告)日：2023-08-29

申请号：US16934054

申请日：2020-07-21

Applicant: Tongji University ,  Tianjin Polytechnic University

Inventor： Zhiwei Wang ,  Hongwei Zhang ,  Liang Wang ,  Jiayi Li ,  Xueye Wang ,  Mei Chen ,  Ruobin Dai

IPC: B01D61/14 ,  B01D69/02 ,  C02F1/44 ,  C02F1/461 ,  C02F1/467 ,  C02F101/20 ,  B01D67/00 ,  B01D69/14

CPC classification number: C02F1/4672 ,  B01D61/147 ,  B01D67/0013 ,  B01D69/02 ,  B01D69/141 ,  C02F1/444 ,  C02F1/46109 ,  B01D2311/2684 ,  B01D2313/26 ,  B01D2313/345 ,  B01D2325/02 ,  B01D2325/26 ,  C02F2001/46133 ,  C02F2101/20 ,  C02F2201/4619 ,  C02F2201/46115 ,  C02F2305/023 ,  C02F2305/026

Abstract: A device for decomplexation and enhanced removal of copper based on self-induced Fenton-like reaction constructed by electrochemistry coupled with membrane separation is disclosed. The device includes a reactor, two electrocatalytic anodes capable of generating hydroxyl radicals, an electrocatalytic cathode membrane assembly, a direct current power supply, an aeration system, an inlet pipe and an outlet pipe. The device of the present invention has a simple construction. Using this device to treat industrial wastewater containing copper complexes under specific conditions allows the decomplexation and the removal of the industrial wastewater containing the copper complexes to be simultaneously realized at a low consumption and a high efficiency. The coupling of electrochemistry with membrane separation can be achieved to protect the cathode from being contaminated by pollutants in the sewage and prolong the service life of the electrode.

公开(公告)号：US11679998B2

公开(公告)日：2023-06-20

申请号：US16458608

申请日：2019-07-01

Applicant: OxByEl Technologies, Inc.

Inventor： Colleen Legzdins

IPC: C02F1/461 ,  C02F1/42 ,  C02F103/34

CPC classification number: C02F1/46114 ,  C02F1/42 ,  C02F2001/422 ,  C02F2001/46133 ,  C02F2001/46152 ,  C02F2103/34 ,  C02F2201/46115

Abstract: The invention of the current application is directed to a wastewater treatment apparatus. The invention includes a divided membrane electrochemical cell including an anode contained within a anode compartment and cathode contained within a cathode compartment. The anode compartment and said cathode compartment are separated by a proton selective membrane. The invention also includes a voltage source, and a liquid-gas separator. The invention is an economically viable electrochemical advanced oxidation system that can cost-effectively treat recalcitrant COD with low energy, without the necessity for chemicals, and reduce or prevent sludge production in a single step.

公开(公告)号：US20190185351A1

公开(公告)日：2019-06-20

申请号：US16326300

申请日：2017-08-18

Applicant: University of Georgia Research Foundation, Inc.

Inventor： Qingguo Huang ,  Hui Lin ,  Junfeng Niu

IPC: C02F1/467 ,  C02F1/461 ,  H01M4/04 ,  H01M4/66

CPC classification number: C02F1/4672 ,  C02F1/444 ,  C02F1/46114 ,  C02F2001/46133 ,  C02F2001/46138 ,  C02F2001/46161 ,  C02F2101/36 ,  C02F2103/001 ,  C02F2103/06 ,  C02F2103/36 ,  C02F2201/46115 ,  H01M4/0433 ,  H01M4/664

Abstract: The present disclosure provides methods, electrodes, and systems for electrochemical oxidation of polyfluoroalkyl and perfluroalkyl (PFAS) contaminants using Magnéli phase titanium suboxide ceramic electrodes/membranes. Magneli phase titanium suboxide ceramic electrodes/membranes can be porous and can be included in reactive electrochemical membrane filtration systems for filtration, concentration, and oxidation of PFASs and other contaminants.