Midnight In The Desert — carbon dioxide

The first low-cost system for splitting carbon dioxide

Posted by K R on

The first low-cost system for splitting carbon dioxide

Using Earth-abundant materials, EPFL scientists have built the first low-cost system for splitting CO2 into CO, a reaction necessary for turning renewable energy into fuel. The future of clean energy depends on our ability to efficiently store energy from renewable sources and use it later. A popular way to do this is to electrolyze carbon dioxide to carbon monoxide, which is then mixed with hydrogen to produce liquid hydrocarbons like gasoline or kerosene that can be used as fuel. However, we currently lack efficient and Earth-abundant catalysts for the initial splitting of CO2 into CO and oxygen, which makes the...

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Four-stroke engine cycle produces hydrogen from methane and captures CO2

Posted by K R on

Four-stroke engine cycle produces hydrogen from methane and captures CO2

When is an internal combustion engine not an internal combustion engine? When it's been transformed into a modular reforming reactor that could make hydrogen available to power fuel cells wherever there's a natural gas supply available. By adding a catalyst, a hydrogen separating membrane and carbon dioxide sorbent to the century-old four-stroke engine cycle, researchers have demonstrated a laboratory-scale hydrogen reforming system that produces the green fuel at relatively low temperature in a process that can be scaled up or down to meet specific needs. The process could provide hydrogen at the point of use for residential fuel cells or...

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Carbon dioxide levels in atmosphere forecast to shatter milestone

Posted by K R on

Carbon dioxide levels in atmosphere forecast to shatter milestone

Atmospheric concentrations of CO2 will shatter the symbolic barrier of 400 parts per million (ppm) this year and will not fall below it our in our lifetimes, according to a new Met Office study. Carbon dioxide measurements at the Mauna Loa observatory in Hawaii are forecast to soar by a record 3.1ppm this year – up from an annual average of 2.1ppm – due in large part to the cyclical El Niño weather event in the Pacific, the paper says. The surge in CO2 levels will be larger than during the last big El Niño in 1997/98, because manmade emissions...

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Forests are supposed to help stop climate change. These forests didn’t

Posted by K R on

Forests are supposed to help stop climate change. These forests didn’t

Forests play a critical role in the global carbon cycle, helping to mitigate climate change by storing carbon that would otherwise end up in the atmosphere. So maintaining sustainable forest management practices that maximize the trees’ ability to act as a carbon sink — for example, planting more trees than we harvest — has been recognized by activists as a key strategy in the fight against climate change. But forestry has not always had the desired effect, according to recent research. A new study out in the journal Science Thursday makes the provocative claim that more than 250 years of...

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