Renewable energy sources using pressure-driven filtration processes and systems

The integration of permselective membranes and electrodes in pressure-driven filtration systems addresses the challenges of hydrogen production by efficiently co-producing hydrogen and purified water, overcoming issues of water sourcing and storage, and reducing operational costs.

JP7828457B2Active Publication Date: 2026-03-11アイ·ディ·イー ウォーター テクノロジーズ リミテッド
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-12-29
Publication Date
2026-03-11

AI Technical Summary

Technical Problem

The scale-up of hydrogen production is hindered by a lack of suitable water sources, renewable energy sources, and convenient locations for storing the produced hydrogen.

Method used

A membrane element and module are configured for osmotic and gauge pressure-driven filtration of water, incorporating permselective membranes and electrodes to co-produce hydrogen, with optional reject water outlets and hydrogen/oxygen outlets, utilizing low current densities to electrochemically decompose a portion of the water.

Benefits of technology

Simultaneously produces purified water and hydrogen efficiently, reducing energy consumption and avoiding issues like chlorine generation and scaling, while being cost-effective and compatible with existing desalination/filtration systems.

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Abstract

Hydrogen 11 is co-produced from water 8 produced in a pressure-driven desalination / filtration process such as reverse osmosis, forward osmosis, pressure retarded osmosis, ultrafiltration, etc. A small portion of the feed, raw brine and / or permeate involved in the desalination / filtration process is subjected to electrolysis, thereby splitting water to produce hydrogen. This is achieved by providing novel RO-type semipermeable and / or UF-type membranes that incorporate electrodes 9, 10 within the membrane to enable the splitting of water by electrolysis.
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Citation Information

Patent Citations

  • Hydrogen-enriched water producer

    CN106978608A

  • Method for generating hydrogen and oxygen from a liquid feed stream comprising water, and device therefor

    EP3842570A1

  • Efficient treatment of wastewater using electrochemical cells

    JP2016506288A

  • METHOD FOR IMPROVING FILTRATION CAPABILITY IN ELECTROLYTIC CELL FOR WASTEWATER TREATMENT

    JP2016507354A