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Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

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Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#12

Your success will depend on some claims you are making. I really hope you are just brief here, and have it amply written up elsewhere with real data. It always a major let-down when I meet with the inventors/idea folks and I find out there is a lot of hand-waving about claims, facts, and data. Good luck!

Thanks for the comment and totally agree! We've worked through our calculations with one of the leading lignin producers globally and other experts. We either have or are working on third party validation for all of our data to make sure we also can provide high quality carbon credits.

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#13
post #8

Very cool project! In the attached video, was that crushing only or was lignin binder being mixed in as well? The output looks dark but kind of powdery, I would guess that's soil being mixed in, because I don't see a fluid tank on the back of that tractor. It looks like resulting the particle size is quite small - I would assume that some amount of aggregate would be tolerable or even beneficial for material strength…

Thank You! You are right! The video shows the first step, which is the crushing. Lignin mixing is step 2. The road can be used by cars immideatly after compacting, as with other methods. However, if You want asphalt on top, it is necessary to let it dry for 2-3 weeks to let the water-solved Lignin harden and dry. In the video it was already a lot of small particles in the ground. We can make rocks smaller, but not bigger:-) The sizes of the gravel bits are evenly distributed, but with some fines on the top(due to Newton). We are using 2,5 meters crushers. That makes it possible to not stop the traffic while working.

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#14

Earlier quoted context omitted.

1. Great question! Different academic experts claim lignin would be very stable in roads and stay there for a long time, and that when some degradation eventually happens, it will sequester downwards and become part of the soil. Deepdive: We have made roads 14 years ago which are still stable and in good quality today, indicating there hasn't been much degradation of the lignin to speak of. Adding here also a quote f…

Where is the road made 14 years ago? Does lignin resist fungus/bacteria in a hot humid place like Brazil?

"Great question, we would love to crush carbon in South America! Our 14 year old road is in Heart Valley in Norway. All of our experience is from Norway so far and our current binder works well in similiar climates around the globe. So places like Brazil we will need to do testing to find the best binder for those environments. We are already in talks with Brazilian ligning producers btw. Our goal is to have a sustainable binder tailor made for all environments

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#15

How do you propose to deal with fungi/ bacteria which have no issue digesting lignin? Likewise, what would your source of lignin material? How do the transportation and processing costs impact your ability to generate the parent materials for this process?

290 million years ago, Agaricomycetes fungi evolved the ability to breakdown lignin. That is the only time any species evolved this ability.

And most rot is actually around the lignin. Amazing material.

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#16
Do your estimates include the carbon cost of of the lingen transportation network needed to bring the lingen from where it's generated to where the road repair is being performed? What does that aspect of the cost look like and how does it compare with existing resource networks for traditional road repair?

What is the cost comparison per foot of road between traditional road repair and your approach (factoring in the maintenance interval increase)? Are there any regulatory challenges you've discovered that might be roadblocks to you scaling out? For example, Google Fiber had pole access issues due to regulations passed to benefit existing ISPs. Is there anything like this in this space?

Are there any niches where you see particular traction as being easier? You've got a big opportunity you're going after so I'm curious about where you're starting. For example, maybe you're especially attractive in adverse environments like snow + mountains. Or maybe cost-conscious towns where you can easily partner with local road repair crews and there aren't meaningful revenues for larger established players. Not actually sure, just curious where your land & expand strategy starts.

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#18

This sounds like an incredible project -- and very much needed. Road building is such a huge source of emissions. What are the biggest objections that your customers tend to have? How much is the use of lignin a factor, in terms of long-term scaling?

Thanks! We are very excited turning roads into a part of the climate solution. Road construction and refurbishment is a very conservative industry and unfortunately they often want to stick to the way they've done things before. But we're working on disrupting this leveraging YC, cool green climate tech and documentation from our long track record!

There are huge amounts of lignin in the world which is the base for our current binder. With our current producer volumes and without leveraging synthetic bio we can reach USD 2bn in yearly global revenue. If we were to leverage all the current lignin supply in the world we could Carbon Crush 1.5million miles of roads every year.

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#19

How do you propose to deal with fungi/ bacteria which have no issue digesting lignin? Likewise, what would your source of lignin material? How do the transportation and processing costs impact your ability to generate the parent materials for this process?

290 million years ago, Agaricomycetes fungi evolved the ability to breakdown lignin. That is the only time any species evolved this ability. And most rot is actually around the lignin. Amazing material.

thanks, great fungi question thread! It's true fungi can digest lignin. Based on our experience and tests done on our roads by the Norwegian Road Authority, our roads have very long durability, most of the time longer than expected from normal roads, so it seems that fungi hasn't been a problem on our roads so far. The lignin is mixed in and stored underground (spread in the 10 inches layer) and some of it will degrade over time and become part of the soil environment. We will need to test other binder formulas more extensively in warmer areas with more fungi, and create a portfolio of binders suitable for all environments :)

We are working working with some awesome scientists at https://www.nmbu.no/en and we will dig deeper into global fungi tactics together with them

Re: Launch HN: Carbon Crusher (YC W22) – Carbon Negative Roads

#20
post #17

> We are Re-inventing roads to solve global problems. At Carbon Crusher, we are committed to help solve climate change, making a positive impact on our planet. > Our proprietary built Crusher Why is "proprietary" important ?

Good question! First I think Haakon thinks it sounds A LOT cooler. Second, we have been R&D our asses off developing the actual Crusher hardware. The current Crusher we have developed over the last years is specifically designed for crushing in harsh environments and tailored for binding ligning into the roads. It is produced, tested over years and works perfectly for our purpose now. It is part of our IP and helps us make carbon negative roads that are more durable and cost less for our road owning customers. Can´t wait to share details about our next gen crusher thats coming later this years that will crush the current one especially on the software/sensor side
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