Category: CCS

  • Earth Day, Drawdown, and GenAI

    Graphic of Categories to Help Reduce Human Impact on Planet. (ChatGPT 4.0 (DALL-E). Prompt by E Hall, 2024, April 22)

    What does GenAI have to say about the scientific-based solutions promoted by Project Drawdown? ProjectDrawdown.org

    <This Article is modified and reproduced from SustainZine.com, with permission. The discussion related to scenario planning is added here.>

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  • Democratization of Power

    SustainZine (SustainZine.com) blogged about a rather cool idea on the decentralization of power (here). The idea in Nature Communications is to have buildings everywhere use their renewable power sources to generate a biofuel of some type. And the authors had the Heating Ventilation and Air Conditioning (HVAC) unit extract CO2 from the atmosphere to generate the fuel. Some of the technologies they pointed to were new-er technologies that are now (hopefully) making their way into main-stream. (Read the nice summary article in Scientific American by Richard Conniff.)

    Basically, everyone everywhere can now produce their own power at rates that are a fraction of lifelong utility power. Storage is now the big bottle neck to completely avoiding the grid. The distributed power should only be a big plus to the overall power grid; however, the existing power monopolies are still resisting and blocking. So complete self-containment is not only a necessity for remote (isolated) power needs, but a requirement in order to break away from the power monopolies.

    In the US, there is the 30% Renewable Investment Tax Credit which makes an already good investment even better for homeowners and businesses. Plus, businesses can get accelerated depreciation making the investment crazy profitable after accounting for the tax shield (tax rate times the basis of the investment). Many of the states also sweeten the deal even more. But the 30% tax credit starts to reduce after 2019, so the move to renewable starts to drop off precipitously at the end of 2019.

    You would think that the power companies would join in the solutions, and not spend so much time (and massive amounts of money) on obstructing progress. All those tall buildings that are prime candidates for wind. Think of all the rooftops, roads and parking lots worldwide that are prime candidates for solar. Distributed power. As needed, where needed. No need for new nuclear, coal or nat-gas power plants. Little need for taking up green fields with solar farms.

    Of course, the oil, coal and gas companies need the perpetual dependence on the existing infrastructure. When we all stop the traditional fossil fuel train — and all indications from the IPCC show that we must stop that train sooner, not later — then all the oil and gas in the world will need to stay in the ground. Call me an optimist, or a pessimist, but I would not buy oil or gas for almost any price. I definitely wouldn’t buy into the Saudi-owned oil company spinoff.

    It is probably a mistake to think that technology to take CO2 out of the atmosphere after the fact can repair past sins. Avoiding putting pollution into the air, water and land — the negawatt and the negagallon, in this case — are by far the best approach.

    In Sustainzine, BizMan concluded with this thought about the here-and-now scenario, not in the future at all:

    “Hidden in this whole discussion is that scenario that is here and now, not futuristic. Renewable energy is cheaper and massively cleaner than conventional energy, and it can be located anywhere. Storage, in some form, is really the bottleneck; and storage in the form of synthetic fuels is a really, really cool (partial) solution.

    References

    Dittmeyer, R., Klumpp, M., Kant, P., & Ozin, G. (2019, April 30). Crowd oil not crude oil. Nature Communications. DOI: 10.1038/s41467-019-09685-x

  • Make your own fuel, while air conditioning (HVAC). Carbon Capture.

    Imagine a great idea that is entirely possible with new technology coming down the pipeline from various sources. That is what an article in Scientific American by Richard Conniff envisions based on a paper published in the Nature Communications which proposes a partial remedy based on A/C units:  Heating, ventilation and air conditioning (or HVAC) systems move a lot of air. Dittmeyer, Klumpp, Kant and Ozin (2019) describe the idea of using renewable energy from solar, wind and water to produce immediate energy and also produce a portable fuel as the democratization of energy.

    Basically, the idea is to take excess energy from the A/C condenser unit (heat dissipation in cooling mode) and extract hydrogen and carbon from the air and produce a hydrocarbon fuel. Sounds cool enough. And surprisingly not way-out there futuristic because some of the basic technologies are already developed. This is a great application of Carbon Capture and Sequester (CCS) technologies. It is extremely local, and would create a local fuel that could be portable (hydrogen and/or synthetic oil).

    Personally, I like the fuel cell concept where the fuel cell uses hydrogen and can go basically instant-on, thereby serving as a backup generator. Energy (from any source) can be used to make hydrogen from air, water and other sources including methane and alcohol. As an example, a miniature fuel cell can be implanted into the human body with hydrogen as the fuel, and recharged through the skin (reversing the fuel cell process with hydrogen and oxygen on one side and water on the other); thereby creating a low toxic battery solution.

    Implied in this article is the idea of using centralized power plants and then at the point of use, home or business, creating a CCS which also creates a local, portable fuel. This brings us back to industrial solutions where the CCS is done at the plant where about half of all the energy produced is lost (heat from turbines) and CO2 is intense vs the 410 (to 900) parts per million in the atmosphere (and in buildings).

    Hidden in this whole discussion is that scenario that is here and now, not futuristic. Renewable energy is cheaper and massively cleaner than conventional energy, and it can be located anywhere. Storage, in some form, is really the bottleneck; and storage in the form of synthetic fuels is a really, really cool (partial) solution.

    References

    Dittmeyer, R., Klumpp,
    M., Kant, P., & Ozin, G. (2019, April 30). Crowd oil not crude oil. Nature Communications. DOI: 10.1038/s41467-019-09685-x