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paulgross

HN member
Joined
Mon, Dec 02, 2019, 2:41 PM UTC
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54 items

About paulgross

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Recent public activity

  1. comment
    Comment #29878909

    Remora (YC W21) | carbon capture for semi-trucks | Remote US or Detroit, MI | remoracarbon.com Remora (YC W21) builds a device that captures a semi-truck’s carbon emissions directl…

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  4. comment
    Comment #26432537

    Absolutely. The main answer is going to be permanent geologic storage in depleted oil wells or saline aquifers, which is widely agreed to be one of the most scalable form of carbon…

  5. comment
    Comment #26425751

    Absolutely — this technology would work very well for cargo ships, and after we make it work for semi trucks, we plan definitely to scale up to help decarbonize other hard-to-elect…

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    Comment #26425732

    There's a new technology that allows concrete producers to inject carbon dioxide into concrete. Two of the leading companies in this space are CarbonCure and Solidia.

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    Comment #26421589

    They aren't - concrete producers, chemical producers, and many other end users actually only need CO2 that's > 90% pure, a bar that we'll very easily clear.

  8. comment
    Comment #26421580

    Many concrete producers are using technology invented by CarbonCure and Solidia to inject CO2 into concrete, which makes it stronger. It's one of the most permanent forms of seques…

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    Comment #26420374

    Totally. We'd genuinely love to be wrong - electrification is a great solution where it works! But our team has built battery electric and hydrogen fuel cell class 8 trucks, and ou…

  10. comment
    Comment #26419438

    Thanks so much for that feedback. Definitely don't want to lean too heavily on Gates - we just decided to quote him to show that we're not the only ones who think electrification i…

  11. comment
    Comment #26419413

    That's a great idea. We've definitely been thinking about partnering with the government, especially with the Biden admin.

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    Comment #26418617

    This is a super interesting idea. We hadn't thought of this application, but definitely one that we'll consider!

  13. comment
    Comment #26417480

    The great thing about truck-sized units is that they can be modular, so we can easily mass produce them. The challenge with stationary units for power plants is that each one has t…

  14. comment
    Comment #26417357

    Oops, citations [1] and [2] got mixed up. This is the correct link: https://apnews.com/article/04029bd1e0a94cd59ff9540a398c12d1

  15. comment
    Comment #26417342

    Companies like CarbonCure and Solidia are doing new work on technology that allows concrete producers to inject CO2 into concrete, which makes the concrete stronger. It's really ex…

  16. comment
    Comment #26416759

    CO2 is used in concrete, greenhouses, refrigeration, dry ice, chemicals, fertilizer, carbonating sodas, etc. - there's actually 230 million tons of demand for CO2 every year! So pl…

  17. comment
    Comment #26416733

    Yes absolutely. We're not going to use our CO2 to extract more fossil fuels - we're only going to work with end users (like concrete producers) that permanently sequester it.

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  19. comment
    Comment #26416576

    We wanted to start by building a low-cost, modular device that we can retrofit onto existing semi trucks, since that's much easier than retrofitting onto a cargo ship or other boat…

  20. comment
    Comment #26416551

    This is a great thought — I have a similar response around the challenges with picking up the captured CO2 from such a decentralized network of capturing devices, but definitely so…

  21. comment
    Comment #26416539

    Thanks so much!

  22. comment
    Comment #26416533

    Thanks so much! You might also enjoy that the legal name of our company is Echeneidae Inc. :)

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    Comment #26416480

    This is exactly right. For an average semi truck (6 mpg, 100,000 miles/year), if we capture 80% of its carbon emissions, we'll be capturing ~ 135 metric tons of carbon dioxide per …

  25. comment
    Comment #26415790

    The tank in the video is just a component of the device overall. The device is 2 cubic meters total, including the storage tank. We'll be storing 600 miles worth of CO2 at a time, …