<sup2/>? <sub2/>?2?electrodialyzer and electrodialysis system for cocapture from ocean water
Номер патента: EP4240513A1
Опубликовано: 13-09-2023
Автор(ы): Chengxiang Xiang, Harry A. Atwater, Ibadillah A. DIGDAYA
Принадлежит: California Institute of Technology CalTech
Опубликовано: 13-09-2023
Автор(ы): Chengxiang Xiang, Harry A. Atwater, Ibadillah A. DIGDAYA
Принадлежит: California Institute of Technology CalTech
Реферат: Disclosed are electrochemical systems that include an electrodialyzer and a vapor-fed CO 2 reduction (CO 2 R) cell to capture and convert CO 2 from ocean water. The electrodialyzer includes a stack of bipolar membrane electrodialysis (BPMED) cells between end electrodes. The electrodialzyer incorporates monovalent cation exchange membranes (M-CEMs) that prevent the transfer of multivalent cations between adjacent cell compartments, allowing continuous recirculation of electrolytes and solutions, and thus providing a safer and more scaling-free electrodialysis system. In some embodiments, the electrodialyzer may be configured to replace the water-splitting reaction at end electrodes with one-electron, reversible redox couples in solution at the electrodes. As a result, in the entire electrodialyzer stack, there is no bond-making, bond-breaking reactions and there is no gas generation, which significantly simplifies the cell design and improves operational safety. The systems provide a unique technological pathway for CO 2 capture and conversion from ocean water with only electrochemical processes.
Electrodialyzer and electrodialysis system for co2 capture from ocean water
Номер патента: CA3194634A1. Автор: Harry A. Atwater,Chengxiang Xiang,Ibadillah A. DIGDAYA. Владелец: California Institute of Technology CalTech. Дата публикации: 2022-05-12.