Recent comments in /f/UpliftingNews

rachman77 t1_jdbwfyu wrote

Once upon a time when I was an engineer at a concrete company we tried this and not only was the quality of the concrete apparently lower it required more chemical additives to set properly kind of negating the benefits. IIRC there was also an industry presentation at a conference we attended that showed that once the concrete wore down or was broken up which inevitable with any major job it released the CO2.

The production of cement for concrete is still one of the largest contributors to GHG emissions out there and without fixing that portion of the equation the concrete industry will still be a problem

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PartyYogurtcloset267 t1_jdbv2f3 wrote

But nobody wants to address the problem. Try to mention reducing consumption on reddit. You'll be downvoted to oblivion. People want large companies to cut emissions without realizing that this would directly impact their ability to buy more shit whenever they feel like. It's always someone else's problem.

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PartyYogurtcloset267 t1_jdburrp wrote

Plants already exist that pull carbon out of the air. However they're highly inefficient and extremely expensive to run. The headline makes this sound like a startup making big promises to investors while barely having a working model right now. This technology may one day do what it says, but right now it falls very, very short of its promises.

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Lesas t1_jdbqqbi wrote

I've had to recently read into CCS systems for Uni and the most common issue i read about with most systems is 1. Whether they're actually able to reduce and store CO2 long term effectively and 2. The amount of energy required to do so (and how much CO2 is needed to produce that energy)

Also without any monetary incentive it is unlikely for someone to build a factory like that, the price for emissions needs to be high enough for it to make sense to build a facility that reduces it (or there needs to be another advantage)

But yes, considering that after Energy and Transportation the Cement industry is one of the leading emitters on a global scale this could be an interesting development

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