Designing the perfect membrane for clean separation of gases

Selective removal of detrimental gases, e.g., hydrogen sulfide (H2S) and carbon dioxide (CO2) from natural gas (CH4) could become simpler and highly effective using a new class of oriented mixed-matrix metal-organic framework ...

Tracking the nitric oxide signaling pathway

Both nitric oxide (NO) and hydrogen sulfide (H2S) act as gaseous signaling molecules with similar physiological effects. Many of the critical questions about the interplay between these two gasotransmitters hinge on their ...

Small volcanic lakes tapping giant underground reservoirs

In its large caldera, Newberry volcano (Oregon, U.S.) has two small volcanic lakes, one fed by volcanic geothermal fluids (Paulina Lake) and one by gases (East Lake). These popular fishing grounds are small windows into a ...

Polyimide membranes for the purification of natural gas

Natural gas that contains larger amounts of hydrogen sulfide (H2S) and carbon dioxide (CO2) is termed sour gas. Before it can enter a pipeline, it must be 'sweetened' by removal of its acidic impurities. Through fine tuning ...

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