Laying down a discerning membrane
Hydrogen and helium pass relatively easily through the membrane, but carbon dioxide, oxygen, nitrogen, carbon monoxide and methane ... Bigger molecules cannot go through, but smaller molecules can." In addition to selectivity, what's remarkable about ...
Can We Turn Unwanted Carbon Dioxide Into Electricity?
Researchers are developing a new kind of geothermal power plant that will lock away unwanted carbon dioxide (CO2) underground – and use it as a tool to boost electric power generation by at least 10 times compared to existing geothermal energy approaches.
Oxygen-separation Membranes Could Aid in CO2 Reduction
The centerpiece of the system is a ceramic membrane used to separate oxygen from air. Burning fuels in pure oxygen, as opposed to air - a process known as oxyfuel combustion - can yield a pure stream of carbon dioxide ... as air passes through a membrane ...
Oxygen-separation membranes could aid in CO2 reduction
Burning fuels in pure oxygen, as opposed to air — a process known as oxyfuel combustion — can yield a pure stream of carbon dioxide ... as air passes through a membrane, oxygen accumulates on the opposite side, ultimately slowing the air-separation ...
How Fuel Cells Work - VIDEO ENHANCED
The Polymer Electrolyte Membrane (PEM) allows only the positively charged ions to pass through ... carbon dioxide (a greenhouse gas), though less than that emitted from current gasoline-powered engines. Most fuel cells are powered by hydrogen, which can ...