Sustainable hydrogen production from seawater and sewage treated water using reverse electrodialysis technology

A pilot-scale sustainable hydrogen production system using reverse electrodialysis (RED) technology was launched. The system is based on direct conversion of salinity gradient energy (SGE) between seawater (SW) and sewage treated water (STW) to hydrogen production by water electrolysis. The hydrogen...

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Bibliographic Details
Published in:Water practice and technology 2019-09, Vol.14 (3), p.645-651
Main Authors: Higa, Mitsuru, Watanabe, Takeshi, Yasukawa, Masahiro, Endo, Nobutaka, Kakihana, Yuriko, Futamura, Hidenobu, Inoue, Katsuhiro, Miyake, Haruo, Usui, Jiro, Hayashi, Azusa, Matsuhashi, Manabu
Format: Article
Language:English
Subjects:
Alternative energy sources
Current efficiency
Desalination
Direct conversion
Electricity
Electricity distribution
Electrodes
Electrodialysis
Electrolysis
Energy conversion efficiency
Environmental science
Fuel cells
Gases
Hydrogen
Hydrogen production
Hydrogen-based energy
Membranes
Salinity
Salinity gradients
Seawater
Sewage
Sewage treatment
Sustainability
Sustainable production
Technology
Technology utilization
Treated water
Wastewater treatment
Water treatment
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Summary:A pilot-scale sustainable hydrogen production system using reverse electrodialysis (RED) technology was launched. The system is based on direct conversion of salinity gradient energy (SGE) between seawater (SW) and sewage treated water (STW) to hydrogen production by water electrolysis. The hydrogen production rate was almost the same as the theoretical value. This indicates that the RED hydrogen production system can convert SGE between SW and STW to hydrogen energy at high current efficiency.
ISSN:1751-231X
1751-231X
DOI:10.2166/wpt.2019.048