The best carbon capture device is the ocean, and for the last 10 years or so huge amounts of free-floating sargassum seaweed have grown in warm ocean waters around the world. Nobody is certain why the sargassum has appeared in such volume lately, but it's plausible to speculate that increased CO2 in ocean water plays a role. As far as I can see the only remotely efficient way to sequester carbon at scale is to leverage the ocean by gathering the seaweed and dumping it on marginal or desert land, both to trap the carbon and fertilize the soil, thus promoting additional carbon-binding plant growth.
Twain lost large amounts of money several times, on bad business investments and doomed inventions. He ran through his wife's considerable inheritance as well as his royalties, and had to keep writing books to make up his losses.
His financial misfortunes were literature's eternal gains.
> The thing you are firing in the oven (limestone) releases CO2.
I'm aware of that. There are two main sources of CO2 in cement manufacture: the calcium carbonate raw material, and the fossil fuel required to cook the raw materials into clinker. Heimdal only deals with one. The questions I'm interested in are which source contributes more CO2 and which can be most economically eliminated.
> We need zero CO2.
Agree, but Heimdal won't get us there. We'll either have to find a replacement for cement, or devise a practical method to convert CO2 waste to something benign, like an improved Bosch process.
According to their web site, one of their premises is that renewable electricity is now cheap and plentiful. If that's so, I'm led to wonder if there is a more direct way to reduce CO2 emissions in cement manufacture, namely, use resistive or carbon-arc heating to fire the ovens, thus replacing fossil fuels in the manufacturing process.
Sorry I don't have the chops to work out if that's economically feasible.
Yes, and have you heard about the new hotness in Python, f-strings? Special strings where you can actually embed variables and executable commands WITHIN the string!!!