Earlier quoted context omitted.
Trees live long enough that that "short term" can still be 100s of years, and buying ourselves 100 years is probably the best we can hope for anyway at this point. And trees are capable of automatically spawning new trees, so a self-sustaining growing tree population should surely count as carbon negative...
As someone who manages hundreds of acres of forest - most trees won't live that long because we'll harvest them or they'll die to disease and wildfire. Reforesting an area would be carbon negative, and eventually the first will saturate. It's much much more carbon negative to produce biochar, biotar, or mass timber buildings.
Solein – Protein out of thin air
101–110 of 160 posts
Re: Solein – Protein out of thin air
#102>Seriously. Solein® is a unique single-cell protein made with a fully natural fermentation process. Using just air and electricity as its primary raw materials, Solein is the most sustainable protein in the world. so..... instead of "wasting" time in spending water and soil and fertilizer into making plants that use solar energy to create "food", we skip that step and just use electricity that is generated from solar…
New solar farms use panels that can achieve light-to-electricity efficiency over 20% [1]. Electrolytic splitting of water to produce hydrogen is about 80% efficient [2] for a combined efficiency of ~17%. Growing potatoes -- a calorie dense but not particularly protein rich crop -- converts only about 1.7% of sunlight to edible calories [3]. The intuition behind cultivating hydrogen oxidizing bacteria for single cell…
Efficiency of light is not that important, because plants reach their maximum rate of photosynthesis at fairly low light levels. In reality yield is limited by low temperatures in winter, avaliability of water, etc.
The process being proposed here requires much more investment of capital and resources than simply planting potato in the fields -> now we need solar panels, electrolysis, etc.
But if you want to improve yield by throwing money at the problem, you build a greenhouse, invest in hydroponics, etc. and your yield will grow several times.
So that would be a better point of comparison -> for a dollar or physical resources invested, does this approach give you more extra yield than a state of the art greenhouse would?
Re: Solein – Protein out of thin air
#103From 2020, so not sure how up to date this is: “Solar Foods is a Finland-based start-up company that utilises CO2 captured from air, water and some minerals as sole raw materials to produce a protein powder using renewable electricity. Branded as Solein®, the product is a microbial protein (also referred to as single cell protein, SCP) obtained by growing proprietary bacteria harvested from nature, in specially desig…
IME this company is just https://en.wikipedia.org/wiki/Quorn with way more money spent on PR
Re: Solein – Protein out of thin air
#104Re: Solein – Protein out of thin air
#105microbes, bacteria etc are extremely resilient to temporary adversity, when theres a surplus of intermittent energy you can feed them the energy, when there is insufficient energy you can let the cells wait for their next meal.
this also frees up energy otherwise spent on agriculture
EDIT: if the claim is true that SCProtein is end-to-end 20x more efficient than vegetable protein and 200x more efficient than meat protein (implying vegetable protein to be ~10x as efficient as meat protein) then this implies feeding these SCProtein to cattle would result in classic meat but still 2x as efficient as vegetable protein today!
EDIT2: this would result in the following order of footprints of foodstuffs:
* animal meat fed vegetable protein (for the super rich)
* vegetable protein (for the rich)
* animal meat fed solein(for the middle class)
* solein (for the lower class)
The bulk of the population will see an inversion where its more responsible to eat solein-fed animal meat than it is to eat vegetable protein!! This results from the inability / impracticality to feed protein to plants
Another observation, if its 20 times as efficient as growing vegetable protein, then we could easily afford to slash say half of agricultural land, giving enormous areas for solar panels, with about 1 / 2 + 20 x 1 / 2 = 10.5 x as much protein as today.
Re: Solein – Protein out of thin air
#106Re: Solein – Protein out of thin air
#107> Solein® is made from natural single-cell organisms, which are grown in a fermentation process. Water is split from the air with renewable electricity into hydrogen and oxygen. The cells are fed CO2 from the air, hydrogen and mineral nutrients. There is no nitrogen mentioned in this explanation. You cannot make amino acids or proteins without nitrogen. These organism either have to be able to do nitrogen-fixation fr…
I think I've heard something similar in a science fiction movie... "It's a single celled protein combined with synthetic aminos, vitamins, and minerals. Everything the body needs." ... "If you close your eyes, it almost feels like you're eating runny eggs." "Yeah, or a bowl of snot."
Re: Solein – Protein out of thin air
#108From 2020, so not sure how up to date this is: “Solar Foods is a Finland-based start-up company that utilises CO2 captured from air, water and some minerals as sole raw materials to produce a protein powder using renewable electricity. Branded as Solein®, the product is a microbial protein (also referred to as single cell protein, SCP) obtained by growing proprietary bacteria harvested from nature, in specially desig…
> proprietary bacteria harvested from nature So which is it, proprietary or natural? You can't own something you didn't create.
Ah Hacker News. Never change.
Re: Solein – Protein out of thin air
#109I need more details than that, but looks very interesting: “HOW SOLEIN IS MADE Solein® is made from natural single-cell organisms, which are grown in a fermentation process. Water is split from the air with renewable electricity into hydrogen and oxygen. The cells are fed CO2 from the air, hydrogen and mineral nutrients. These microorganisms are then able to make amino acids, carbohydrates, lipids (fats), and vitamin…
> These microorganisms are then able to make amino acids, carbohydrates, lipids (fats), and vitamins. * Carbohydrates are easy. (It's actually very difficult to "transform" light into sugar, but there are plenty of plants and bacteria that can do that. They are using Hydrogen instead of light, but so let's say it's "easy".) * Lipids are even easier. (I can't remember any technical problem here.) * Amino acids are dif…
Re: Solein – Protein out of thin air
#110Earlier quoted context omitted.
similarity of the name with soylent green Remember Soylent, the company and product? They're still around, selling on Amazon.
Other than some sanitation woes in their factory, they produce a decent product. I use it heavily when traveling since it's easy to get some soylent at my destination. No need to prep food or have a kitchen, reasonably balanced, tasty enough.
You had one job...