Carbon Dioxide Removal (CDR)

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CDR is removal of CO2 from the atmosphere - an essential basket of technologies for achieving UN IPCC best outcomes to mitigate climate change. This is a community for discussing advances and issues of CDR.

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CadeJohnson

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CDR is a giant industry in its infancy (www.latitudemedia.com)

submitted 1 year ago by CadeJohnson to c/cdr

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[–] SolarMech 3 points 1 year ago (1 children)

It's the worst deal in history for us.

If it works, we'll probably have to pay tax dollars for pulbic contracts to remove CO2 from the air for the rest of our lives (do you think they'll clean it out of their own goodwill? For their own survival? Without charging us?). And that doesn't seem likely.

If it doesn't work, we're fucked.

Currently, we get a lot more millage out of reducing obvious carbon sources (transit with fossil fuel engines, meat production, cruise ships, energy production) or reducing inefficiency in other industries (textile, etc.). The problem with reducing at the source, I think, if if you go all in you'll quickly realize that it essentially means acknowledging we can't do as much as we could before (at least not until we've adapted, and that will take awhile). And that is poison to our system (politically and economically).

[–] CadeJohnson 5 points 1 year ago

There is about 1000 gigatonnes of excess carbon dioxide in the Earth systems from the burning of fossil fuels. It is already THERE, and will not naturally return to the lithosphere in less than thousands of years. So that is a really terrible deal for sure. Of course we should not keep adding to the problem - we must get off fossil fuels as quickly as possible. But there are likely to be some hard-to-eliminate uses and there is already this giant legacy of CO2 we have to deal with. I don't think we have any actual choice to not do carbon dioxide removal - not and retain an appreciable percentage of the world's biodiversity.

[–] Five 2 points 1 year ago (1 children)

The common thread in all these articles about CDR is that they focus on corporate investment into large scale projects. If the government was serious about meeting climate targets, they would be raising taxes on the largest companies, and giving the money to small scale, open-source carbon removal solutions. People to run these could be pulled from the enormous unemployed labor pool, and given grants in the form of equipment and technical education.

It seems like CDR could be done on a small scale with photovoltaic panels and an open-source hardware direct air capture (DAC) system. People could be subsidized to place panels on their home, and side-step the logistics of connecting it to the grid by having it wired directly to a DAC system. The existence of panels would be an incentive for the electrical grid get re-designed at a faster pace. It is currently not possible to feed energy back to the grid in a lot of places for worker safety reasons, but this creates a chicken and egg situation where the costs of re-aligning the grid for domestic energy production needs the existence of existence of domestic solar capacity to help justify the costs, and domestic energy production is much more expensive if you can't benefit from selling your surplus back to the grid. Having subsidized DAC justifying the installation of solar capacity would solve the bootstrap problem.

Of course the additional funds to do a program like this would have to come from raised taxes on the most polluting industries. This is all wishful thinking.

[–] CadeJohnson 2 points 1 year ago (1 children)

Governments are starting to spend on CDR development, but it is not enough - considering the scale of the problem. There are also a variety of ways that governments are promoting CDR through tax means - creating a market for low-carbon concrete or giving tax breaks for low-carbon activities. I received a nice tax discount when I installed my own solar panels. I am in a CDR volunteer collective called OpenAir (openaircollective.cc) where we are trying to promote CDR in many directions.

I did not install a grid tie connection at my house - the connection is one-way and I seldom use any grid power at all. But it is nice to know there is a back-up. I would have been willing to cross-connect and share power, but there were barriers: high connection cost and very low payback. Here in Puerto Rico, there is an activist group promoting micro-grids at neighborhood-scale or city-scale to make the system more resilient - but I do not think their efforts are catching on with the entrenched interests at the power authority, unfortunately.

The existing fossil fuel subsidies would go a long way to developing the CDR technologies we need. The money is there, but it is going the wrong place.

[–] Five 0 points 1 year ago (1 children)

That's awesome you're using residential solar power. Have you experimented with community-scale CDR, like generating bio-char?

[–] CadeJohnson 2 points 1 year ago

I have made small quantities of biochar experimentally, and I am considering making a 55-gallon drum sized burner (TLUD-style). I bought this place in 2021 and I have been using every scrap of biomass for composting so far - the soil here was very poor. Of course the biochar would help the soil too, but it won't support earthworms - I needed to kick start the soil organisms first. But all my neighbors mow every week and generate lots of grass clippings and little else. It will be hard to make that into biochar I think - green and dense - but I will eventually try. For now I have at least convinced several to quit bagging the cut grass and putting it in trash pickup.

[–] Dogyote 2 points 1 year ago (1 children)

I'm a bit worried about the other responses in this thread automatically assuming this task will be performed by the private sector. That line of neoliberal thinking helped get us into this mess and I don't think it will get us out. The government should be doing the research and eventually the removal and storage. There's never going to be a market force that pursuades the private sector to do it, so the public sector should just take on the task.

I'm probably wrong, but this is what I'd prefer. Imagine someone connected to an old oil company getting richer removing carbon that their grandparent got rich putting in the air. That would be insanity.

[–] CadeJohnson 2 points 1 year ago

From what I am reading, the agencies we might imagine as having a role in direct research have been almost completely stripped of that capability over the last few decades by relentless budget cutting. So the entire focus of CDR development nowadays seems to be two forks: policy initiatives to create market incentives for CDR activities, and grant programs to fund basic research by large and small organizations (with the basic capability to pursue grants). For sure some of that is being siphoned into oil companies.