paulgross

8 ms·

1.
Remora (YC W21) is hiring – carbon capture for semi-trucks
1 points by paulgross 5y ago
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by paulgross 5y ago
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 directly from the tailpipe. We sell the CO2 to end-users who can st
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Remora (YC W21) is hiring a mechanic – carbon capture for semi trucks(ycombinator.com)
1 points by paulgross 5y ago
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Remora (YC W21) Is Hiring – help build carbon capture for semi trucks(ycombinator.com)
1 points by paulgross 5y ago
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by paulgross 6y ago
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 sequestration. We're also hoping to turn the CO2 back
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by paulgross 6y ago
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-electrify forms of long-haul transport like locomotives and cargo
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by paulgross 6y ago
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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by paulgross 6y ago
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.
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by paulgross 6y ago
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 sequestration, so it takes the CO2 out of circulation forever
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by paulgross 6y ago
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 our experience suggests they’re decades away from competi
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by paulgross 6y ago
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 is going to be trickier for long-haul trucking than
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by paulgross 6y ago
That's a great idea. We've definitely been thinking about partnering with the government, especially with the Biden admin.
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by paulgross 6y ago
This is a super interesting idea. We hadn't thought of this application, but definitely one that we'll consider!
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by paulgross 6y ago
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 to be custom-designed from the ground up. Plus, you have to p
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by paulgross 6y ago
Oops, citations [1] and [2] got mixed up. This is the correct link: https://apnews.com/article/04029bd1e0a94cd59ff9540a398c12d1
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by paulgross 6y ago
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 exciting technology, and they've already got plants
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by paulgross 6y ago
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 plenty of opportunities for us to sell the CO2 we're
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by paulgross 6y ago
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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by paulgross 6y ago
Exactly!
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by paulgross 6y ago
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. But we definitely hope to expand to mining haul truck
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by paulgross 6y ago
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 something we'll explore down the line.
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by paulgross 6y ago
Thanks so much!
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by paulgross 6y ago
Thanks so much! You might also enjoy that the legal name of our company is Echeneidae Inc. :)
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by paulgross 6y ago
Exactly!
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by paulgross 6y ago
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 year, which is roughly the same as 6,200 trees * 2
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by paulgross 6y ago
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, or roughly 1800 pounds of CO2.
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by paulgross 6y ago
Thanks Tito. We're big fans of AirMiners!
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by paulgross 6y ago
We add our device downstream of the DPF, so it's entirely complementary.
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by paulgross 6y ago
Good to know. We use the term "semi truck" because it's more widely used, and we figured that folks might not know the term class 8 truck!
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by paulgross 6y ago
The atmosphere is only 0.04% CO2, whereas vehicle exhaust is about 13% CO2, so it's much easier (and less energy-intensive) to capture CO2 from a tailpipe. We definitely want to partner with folks working to turn CO2 into fuel — we&#x2

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