Viewing profile — markcyffka

Great point & not so often talked about. Something like 230Mton of CO2 are used each year, a little more than half goes straight to urea production. By contrast only about 10% goes…

Hi HN, we need to sign off for a bit & get back to building. So grateful for your questions & engagement. Be well & cheers - Mark & Sudip

Sorry to get to this question late. There is some good discussion below on the possibilities of bio-based and nature-based solutions. We see bio-based solutions as having a great a…

Thanks for the question, copying from an earlier comment which touches on similar point -- "Great question. We'd love to capture point-source CO2 from factory flue gas where it is …

*deforestation due to climate-influenced movement of arable land e.g. desertification also harms biodiversity as well

Today we see a moment when popular interest, need, capital, and talent are converging on a willingness to to try new things with a path to success. Who knows how long the window wi…

Great point. Cheers.

We don't claim to be experts on this subfield & this is may not be an exhaustive list, but Carbfix, 44.01, and the Solid Carbon coalition are some that come to mind to check out. W…

I don't have the sources or exact numbers on hand, but I remember reading that the world's extractive & production processes create something like ~4 billion tons of oil, ~4 billio…

It should be done more but stronger tax & regulatory incentives are needed to encourage point-source polluters to adopt CO2 capture for emissions from industrial processes & energy…

The energy estimate includes the costs of compression & injection using some figures in publicly available resources that look at CO2 removal end-to-end. Co-locating the capture as…

The relationship between pressure, volume, and temperature for 1 ton of air (mass) can be characterized reasonably well by the ideal gas law PV=nRT https://en.wikipedia.org/wiki/Id…

Hi, great question, I hope we addressed it here from comment above: "Right now, there is an ongoing discussion between a huge variety of stakeholders -- CO2 removal startups/compan…

Thanks for the comment. Companies that are very action-oriented on slashing their emissions are already starting to look to CO2 removal projects as the next frontier to maximize th…

We agree that saline aquifers are be a compelling strategy given the huge volumes available & measurement capabilities you mentioned. As verification standards emerge in the (curre…

There are a few startups exploring this and also PNNL is doing great public work on this topic as well. https://youtu.be/osXq-k84LpA?t=2177

Most all of it comes as a side product. The amount of CO2 used for the applications listed pales in comparison to the amount used for urea (fertilizer) production.

Thanks for the question, we'd rather not speak to anyone else's technology, except to say that we support anyone working to advance CO2 removal [copied from comment below, trying t…

Thanks for the question. It's a tough & good one we want to take it directly as we can. At our early stage, we are focused on developing our capture technology & thinking carefully…

We also got calculations that yielded literal mountains ranges of carbonate... That's not to say carbonate cannot be part of the solution, but maybe it is unlikely to be the only s…

Great question. We believe it becomes an issue of storage, logistics, supply chains, transport, and so on. We approach it this way: if we build & install 1,000,000 decentralized ca…

I appreciate your comment & we hope to convince you otherwise as we get more process data from getting to pilot scale & beyond. Biodiversity is already being harmed today by the dr…

Great points. We are using lab scale equipment today, and as trained engineers we want to be conservative to any forecasts we share publicly since unrealistic claims will not help …

You are right that amines are great at removing CO2 and other acid gases from input gas streams and has been used in submarines/natural gas/many other industries. Can't speak publi…

In short, there is always that risk. We are exploring with partners how to minimize it. Subterranean mineralization is a fascinating path too and may help with some leakage concern…