Pilot Plant That Converts Carbon Dioxide into Bricks is a World First
A new pilot plant recently launched in Australia aims to combat global warming by converting carbon dioxide into bricks.
Join the discussion below, or Read more at Inhabitat.
#1 Aug 27, 2013
Interesting application of mineral sequestration. The thermal cost is only about 7% which is a good factor, but they do not seem to indicate how much energy it takes to powder the mineral. Nor do they specify the rate of reaction which is usually fairly slow and thus costly in terms of how much time the reactants must be heated.
This may or may not be useful in terms of the net CO2 if it takes too much energy to operate.
Personally, I think they should just powder the CO2 and spread it over a large area of Australia, letting it react from weathering without the input of heat or fluidized bed. The same amount of CO2 would be extracted without needing to concentrate it or heat it.
#2 Aug 27, 2013
"powder the CO2" should be "powder the magnesium silicate rock"
#3 Aug 27, 2013
Interesting that we don't have to "sequester" any more deep underground and hope it never escapes, which is a very expensive process and geologically limited. The only issue is, all the millions of tons of CO2 already in the atmosphere! It would be great if they could build so many of these plants around the world that they can use the rock in place of (for instance)concrete or asphalt for road surfaces, things like that. In other words, do enough of this so that it actually makes a dent in the atmospheric levels.
#4 Aug 27, 2013
Who on Earth would post "powder the CO2" but make a guess? Exactly, who.
P.S. Nothing beats trees!
#5 Aug 27, 2013
In a clockwork fashion operating are many many processes both chemical and biological, even physical. It's just beyond them to handle the amounts and rates that keep increasing.
Today ninety million tons of man-made ghg emissions are released into our atmosphere every day. We have to cut back at the source of these emissions. Once released, the emission genie can NOT be put back into the bottle again... even if you had limitless energy, which you don't.
We have to move away from using fossil fuels. Period.
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