Category: Uncategorized

Geothermal energy: a power plant in Iceland uses the heat of magma

In 2009, a borehole drilled near the Icelandic geothermal power plant at Krafla reached a magma pocket. Since then, and for two years, superheated water (temperature over 450 ° C) has been used to produce green electricity efficiently. A specialist journal has just published 16 articles on this experience and its implications. Inaugurated in 1977,…
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Corn-based biofuel more polluting than petrol

A fuel classified as ecological because produced from corn husks would actually emit more greenhouse gases than traditional gasoline. Researchers show that a large amount of carbon dioxide (CO2 ) would be released into the air if it were not captured in the soil without the leaves of the plant necessary for the natural process. The…
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Hybrid Air, PSA’s gasoline-compressed air hybrid in 2017… maybe

A modified Peugeot 2008 serves as a prototype for this concept of hybrid powertrain using petrol and compressed air, and presenting a lower cost than thermal-electric. Efficient in town and less on the road, the system is ready but PSA is still looking for partners. Marketing in 2017 is therefore uncertain. The idea is old…
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Biobatteries could make better use of biomass

In the range of renewable energies, that which can be drawn from biomass has the advantage of not being subjected to the vagaries of the weather like wind or solar can be. However, the yields from biomass recovery plants remain unsatisfactory. With their installation called “biobattery”, German researchers offer an innovative solution. German researchers from…
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Subglacior will work under the ice to explore the past climate

Why did the rate of glaciation suddenly slow down about a million years ago? Perhaps because of a drop in carbon dioxide which has modified the response of the Earth’s climate to orbital variations of the Planet. The only possible verification is in Antarctica and will probably come, initially, from Subglacior, a probe which dates…
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Biodiversity: the damage of the Balbina dam in the Amazon

Designed as a source of renewable energy, hydroelectric dams can significantly degrade local flora and fauna. The case of the Balbina dam in Brazil, analyzed in a scientific study, attests to this. Research on one of the world’s largest hydroelectric dams in the flooded area, the Balbina dam, in Brazil, reveals a loss of mammals,…
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Sustainable pesticides installed in homes close to crops

The association Generations futures, which campaigns against the excessive use of pesticides, announced to have found them inside houses located very close to agricultural activities, in particular near vineyards. In itself, there is nothing surprising but some are notorious endocrine disruptors, three of which are prohibited. The method is not scientific and does not quantify…
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Chernobyl, 30 years later: a still provisional assessment

Thirty years ago, reactor no. 4 at the Chernobyl power plant in Ukraine exploded following a poorly conducted test. The greatest nuclear disaster, with Fukushima, still leaves its mark in the region, in the bodies and in the hearts. Back on these traumatic days and months. In 1986, the Chernobyl reactor in Ukraine, then in…
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Is CO2 sequestration possible thanks to basalt?

Man may not be able to limit the use of fossil fuels for the next decades. It must then be able to capture the carbon dioxide (CO2) produced by the industry and then store it durably in the ground. This is not to be won… However, promising results have been obtained with basalt, to the…
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Deep geothermal energy: a unique power plant in the world opened in Alsace

In Rittershoffen, in the north of Alsace, a deep geothermal power plant has started operating after several years of study. It will produce 24 MW of thermal energy, therefore in the form of heat, directly used by a neighboring biorefinery. A world first. In the north of Alsace, the idea, for the past twenty years,…
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