While it’s good to be skeptical, algae tanks like this are actually a good idea for the use-cases for which they are designed. Places where trees would be difficult and expensive to grow. The tanks more efficiently capture carbon, require less maintenance, produce fertilizer as a byproduct and the solar panels on the tank produce enough extra power for there to be a USB charger on the bench. The goal isn’t to replace trees with tanks but to use them where it makes sense to do so.
This was my thought as well. They should be used in addition to, not as a replacement for, trees, bushes, and grass.
It does make me wonder, though, whether or not we could use these to help capture more carbon than we’re creating.
That would require a gigantic scale of operations, and trees are just waaaay more economical.
Think of entire oceans full of algae not being enough to stop what’s currently going on with ecological situation.
Too expensive to grow trees? Thank god capitalism is saving us so much money, we are all so rich now that we can simply buy oxygen tanks instead of having to deal with those money sucking trees and plants.
To echo what some other people have said, these algae tanks absolutely should not be used instead of trees. If I see a tree get chopped down and replaced with one of these, I’ll be sad and angry. However, these can go in places where trees can’t go, like rooftops. And you don’t have to either wait for a tree to grow for a decade or take a tree from somewhere else to install one. It also serves as both a seating area and can mount a solar panel on top. These and trees both have their place and should both continue to be used.
Putting a ton of water on the roof isn’t a good idea, unless it was already rated for a swimming pool.
They don’t need to be inside cities at all.
Used for what exactly? To have a dirty fish tank?
For the conversion of Carbon Dioxide into Oxygen? That was the main point of these, the algae does that and is actually even more efficient at it than a tree. Trees do have other benefits hence why they shouldn’t be replaced, but these should go in places where trees can’t.
That is adorable.
please god tell me you’re trolling
It’s actually hilariously ignorant that you people are pretending this is a cost effective idea for carbon capture. It will, in fact, just make a bunch of dirty fishtanks that are abandoned or thrown away almost immediately.
thanks for calling me you people dude!
who said it was cost effective? I only said I cant believe this person didnt get the idea.
its not “in fact” its “you believe” . youre probably right, just saying
Nah, I just think it’s really silly.
If growing algae is effective at anything, why do it in a small sealed tank in the middle of a street? Most of the oxygen we breathe is produced in the ocean, regardless of where we personally are. Why would we need to stand vaguely near a rather sealed looking algae tank? If simply growing algae is effective for oxygen replenishment and carbon capture, surely we’d be better off simply growing massive ponds of it away from city centers? Like, out in the open?
It seems like green-washing bullshit to me.
Trees provide a lot more than oxygen. They provide shade, habitation for animals, and psychological well-being for humans. Dirty fish tanks don’t provide any of those things.
People are seriously in this thread complaining about roots like they’re a reason to replace trees with algae boxes. Getting some big plant-based NFT cryptobro carbon-credit nonsense vibes.
Well Trees don’t make as much money for rich people who own everything and Trees make hot days more comfortable for homeless people
Algea is a much much better oxygenator with lower maintainence, people don’t seem to notice how fast cities can kill trees.
You don’t need to put algae in cities. They can be basically anywhere to absorb CO2.
Trees in cities tend to be carefully chosen for the environment. Are we in a climate where we need to put salt on the road in the winter? Choose trees that can tolerate some salt in the ground.
Maybe stop putting salt down in winter??? Who does that still they need to stop.
As much as it sucks, until we reduce the need for cars, northern rural areas are going to need to use salt for roads to be usable. Of course, if global warming gets worse it won’t be an issue
“Global warming” doesn’t mean warmer winters. It means extreme summers and winters and nothing in between, with a global temperature raising.
Besides the already stated fact that global warming will only make winters worse, there are better ways like cleaning the snow (ok, that’s radical) or using abrasives like sand or gravel.
Clearing the snow doesn’t fix the ice that snowplows leave behind and gravel/sand is a straight placebo. That’s why the roads get salted/brined.
My major metropolitan City kills New trees literally every year.
And the oceans are incredibly vast, so they provide most of the world’s oxygen! Obviously it’s hard to get a precise number but 50-70% is the accepted range.
There are many reasons to plant trees in the city but local oxygen supply isn’t one of them. Mostly trees look nice, and make people feel better by their presence. They also have a significant cooling effect, something a steamy tank full of warm algae definitely won’t help with on a summer day.
Local oxygenation is important, conversion at the source pretty much always is.
Moreover it doesn’t at all imply in lue of trees and importantly oxygenate at the same rate day and night since they’re independently lit ideally 24/7/365.
My first thought is you can embedd this inside buildings rather trivially
Walls made out of these would be cool
We keep killing the ocean then asking why we need those stupid plants.
even so, I bet the billionaires were ecstatic about how it doesn’t give any shade on hot days
I think it has more to do with the fact trees require more maintenance, like raking up leaves and fruit, and having to saw off branches.
Also those roots can break pavement and pipes.
You really think those massive, experimental water tanks won’t require more maintenance, because you have to trim trees once ever few years? Or because their roots might grow too much?
Ok, I like trees as much as the next person, and much prefer them over these algae tanks.
But what about these “massive experimental water tanks” do you think will damage the infrastructure beneath and around it like tree roots do?
For now, no. In the near future, probably
Well of course, you can’t give working class people any money for working, you can only give them a slave-wage. That’s why all manufacturing was outsourced to very underdeveloped countries when NAFTA was first put into place.
You can easily get away with exploiting people who have no other choice but to work for a dollar per year, but it’s much more difficult to do that to someone’s neighbor in their community.
We just have to remove the roof from that thing so it won’t be shadowy, and make a wall in the bottom so it can’t be used to lay down.
I think a lot of these are just cool experiments and projects grad students do for the sake of doing them. Then some hack writes an op ed about how we don’t need to worry about deforestation because we can plop algae tanks down instead.
I thought it was more of an experiment that, if proven successful, could eventually aid in the exploration of space since we would need to engineer ways of creating oxygen for prolonged travel.
Oh thank god. We don’t have to worry about deforestation anymore? Phew. Thanks, tank of algae.
Sadly, dealgaeation is quickly becoming a catastrophic problem. However, we are confident we can soon genetically modify human lungs to partially breathe the sulphur clouds that will engulf our planet!
It’s sad that the effort to do something innovative to solve a problem can easily get dismissed via a zero effort critique by someone who never took the time to learn why it was created.
Yeah…most of the O2 comes from plankton. People seem to freak out about a few trees being cut down, but are chill when it comes to rising ocean temps
nice, thank you.
There is a tree right next to it. LOL so obviously space for trees. The trunks take up less space, its just they require pulling up surrounding sidewalk sometimes, and maintenance crew for trimming and watering in dry spells.
Well, the title should be, we can replace Benchs with better benchs
That would make more sense
Trees don’t perform nearly as much work as the algae tank in sucking up C02 and outputting 02, require more maintenance, and takes longer to deploy (have to wait for tree to mature).
I was only commenting on the wording under the picture claiming they place them where is no room for trees.
Fair enough, I misunderstood. I meant no ill intention.
No worries. I get they can be beneficial, the photo was just ironic
Can’t wait to see hulk semen cartridges everywhere when I go out for a walk.
HULK SMASH CO²!
HULK SMASH?
Huh?
They are saying these day glo green containers look like the incredible hulk ejaculated into glass boxes on the street.
Ahhh. There was no capital H so I got confused.
I’d have to see how it is better than, worse than trees on a case-by-case basis. But generally speaking, I can think of a few reasons this is better:
Trees are messy. They take a long time to grow, they take constant maintenance while growing, then they eventually die. Tree roots fuck up pipes & concrete. If this installation is equivalent to 1 or more trees, it is doing the work in a fraction of the space.
At the same time, though, green space has shown to improve mental health. I would be curious (and very sceptically biased) if algae tanks have the same impact.
Trees also provide shadows and space for birds and other animals.
It’s expensive and has only the advantage of catching CO2, while trees have more than just that. Produces O2, Cooling the near surroundings, are a save heaven for many species and therefore increases biodiversity, filters the air and soil, also makes the soil more healthy and probably many other reasons.
Humans really are weird. Trying to replace a perfectly fine bio-machinery that developed over Thousands of years with their own steel junk. I dont see why anybody would prefer that gadget over a tree.
It’s expensive and has only the advantage of catching CO2
It doesn’t even do that well. Algae have short lifespans and when they decompose, the CO2 will go right back into the atmosphere. It’s the same reason you can’t reasonably capture CO2 with small plants like grasses, nor does the carbon inside you count as captured. The reason trees “capture CO2” is because trees live for a long time and wood decomposes very slowly, and therefore keep its carbon locked in the wood for a long time. The point of capturing carbon is you take it out of circulation for as long as possible.
There are ways to have algae capture carbon, but they are fairly involved (read: very expensive) processes whose scalability is still uncertain. Certainly not a tank in the street.
I was always under the impression that plants chemically convert CO2 and some other stuff to glucose (C6-H12-O6), right? In that case, the algae would still help, wouldnt they?
It helps if and only if the glucose stays as glucose and is not metabolized. Wood is a good application of this, as its cellulose fibers are made of glucose, in a form that is very stable and can stay locked away for a long time (especially if the tree is alive as it does not metabolize the glucose in its own wood and has anti-predation adaptations that actively guard it against other organisms). However, if the glucose decomposes, i.e. is metabolized, it is converted either directly to CO2 or into other compounds that eventually end up as CO2, essentially returning the captured carbon back to the atmosphere.
Humans really are weird. Trying to replace a perfectly fine bio-machinery that developed over Thousands of years with their own steel junk. I dont see why anybody would prefer that gadget over a tree.
Can you plant a tree capable of capturing the same amount of CO2 as those algae in that small a space? How about “refilling” the tree if it happens to die?
Society doesn’t have to lock itself to a single solution for countless varied problems. If we’re talking about a long, empty walkway, or a park, then trees are a great solution. If we’re talking about a small space that must be kept free of obstructions, such as a bus stop, then a sack or box of phytoplankton is much better suited.
Thousands?
I assume they mean how long many old growth forests have been growing (though even then thousands of years is on the younger end), not the time it took for trees to evolve.
What happens when we go too far and remove all CO2 from the atmosphere?
Your question isn’t entirely a hypothetical - this happened at the dawn of time, when photosynthetic life forms first evolved. First, it won’t ever happen again, no matter how good we get at scooping CO2 from the atmosphere. Second, the result is theoretically catastrophic for aerobic life forms, but it’s also a negative feedback loop, meaning it self corrects.
Most plants would die because they rely on CO2 for photosynthesis.
Many sea animals would die. Oceans absorb CO2 which forms carbonic acid (H2CO3) in water. Oceans are slightly alkaline due to dissolved salts (bicarbonate and carbonate) and the carbonic acid from the absorption helps to create a stable pH. Many sea animals are highly adapted to a specific pH and would die if the ocean got either too acidic or too alkaline, so they are pretty doomed in either case.
Many humans would die because agriculture would collapse. Also breathing pure oxygen over a long period of time would be very bad because of oxygen toxicity. Yeah, pure oxygen is toxic for humans lol
Land animals, I’m not so sure, but I assume most of them would die too.
SciShow made a video about these: https://youtu.be/QUGJPZ1a308
That is super cool and my immediate assumptions were dispelled. I would love to see these in my city.
Thanks for posting this! I was curious about this and had to scroll through so many miserable comments in this thread to find this.
For real, the people on this site deserve the hell they create for each other. If Kbin had a functioning account delete button, I’d have been gone months ago.
Here is an alternative Piped link(s):
https://piped.video/QUGJPZ1a308
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I’m open-source; check me out at GitHub.
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How about we only have some capitalism. Let’s only allow less slavery and habitat destruction in exchange for us all to be subservient to billionaires.
Okay, you get 5 capitalism. But you have to share.
What are you, a communist?
Guys, it’s not one or the other. We can have trees and algae tanks. Trees can still offer all of the benefits they do like shade and beauty while algae tanks can be used to increase fresh oxygen. Algae is much better at absorbing CO2 than trees and providing clean air which is a big problem in a busy city.
Funnily enough, both are in the picture.
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It is one or the other because they’ll come out of the same budget - it’s an “opportunity cost”. So if the city has $1000 to spend on either a tree or a tank, then they can’t spend the same $1000 on both items. We’d need some balance between the two.
Algae should be more effective and pollution kills trees
Pick metric for efficiency
CO2 absorbtion rate over time. It’s not even close.
That said, trees have other benefits in an urban setting.
CO2 absorbtion rate over time.
Educated person found.
That said, trees have other benefits in an urban setting.
Yes. It is easier to notice burning skin than different CO2 level.
We are not replacing trees with green sludge canisters. I’ll take up weapons way before that.
This whole thread is a great example of why I’m continually disappointed with Lemmy. Half the comments are just some variation of “capitalism bad”. I hate capitalism as much as the next guy, but it sure would be nice if people would stop grinding their axes for a few minutes to talk about the actual subject of the post. Or just not comment at all if they don’t have anything relevant to say.
Counterpoint: pointing out the source of the problem is always relevant.
Counter-counterpoint: Capitalism isnt the source of every problem and sometimes there isnt even a problem.
Who said it’s the source of every problem?
Cato_the_podasist did. The OP of this thread said that this post has nothing to do with capitalism and that we should therefore stop talking about it here. Cato_the_podasist argued against that saying that pointing out the source of the problem is always relevant, THEREBY IMPLYING that pointing out capitalism is always relevant (because capitalism doesnt have anything to do with this post specifically) so if its relevant here, then were is it not relevant?
That’s implying that capitalism is the source of this problem, not every problem. Consider what they’re saying.
(What I meant is: Capitalism is not relevant here. Maybe sometimes it is the root of the problem but not in every case (and certainly not in this one).
It’s tiring how militant lemmites can be. Everyone has an opinion and will always find an excuse to spout it.
Young drunk me would love to throw a brick at one of these…I don’t know why but it looks very tempting
The answer is trees take years to grow and aren’t suitable in places like rooftops
Also, trees that get too big have roots that damage infrastructure and have to be cut down. I’m not saying I like the dirty fishtank look more, but I can see how this might be easier to maintain in urban spaces.
It is fucking street
And you can’t grow trees on concrete. This one is particular is just the first one of it’s kind and it’s mostly in a spot to show off the technology. I’m not aware of any other ones that have been built yet.
That’s why there are no trees anywhere in cities, and roofs never have plants anywhere.
