New Innovative System Can Turn Seawater Into Fuel — The cocktail of elements i |
, and Manchester Metropolitan University has discovered a method to extract hydrogen from the ocean. They accomplish this by funneling seawater through a double-membrane system and electricity.
Many attempts to make hydrogen gas start with fresh or desalinated water, but those methods can be expensive and energy intensive. Treated water is easier to work with because it has less stuff – chemical elements or molecules – floating around. However, purifying water is expensive, requires energy, and adds complexity to devices, the researchers said.
The ideal membrane system would perform three primary functions: separate hydrogen and oxygen gases from seawater; help move only the useful hydrogen and hydroxide ions while restricting other seawater ions; and help prevent undesired reactions. Capturing all three of these together is hard, and the team’s research is targeted toward exploring systems that can efficiently combine all three of these needs.
Along with designing a seawater-to-hydrogen membrane system, the study also provides a better general understanding of how seawater ions move through membranes, the researchers said. This knowledge can help scientists design stronger membranes for other applications as well, such as producing oxygen gas.
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