What would a world look like if recycling reached 100%?
-
No... I believe that's a foot. With BBQ sauce.
Ah, so we’ve reached the ‘fine dining’ stage of recycling.
-
This post did not contain any content.
-
This post did not contain any content.wrote last edited by [email protected]
Instead of focusing on the efforts of individual persons and households, I think more effort should be focused on industrial symbiosis - identifying industrial waste and side streams that can be useful inputs into the products of other industries, and connecting those industries.
For example, you might have a local electricity-generating station that takes some of the steam that's created as a side effect of their process, and sends that steam to an oil refinery located next door. The oil refinery has a water hook-up and sends regular water to power station for their power generation, but they also send their treated effluent water for the power plant to use in cleaning as well as stabilizing fly ash, and they also send over their flare gas as an extra energy source for generating power.
The oil refinery could send it's excess gas to a gypsum board manufacturer just down the road; the gypsum board manufacturer could also get most of it's gypsum from the power plant's sulfur dioxide scrubbers.
The power station could also send more of it's excess steam to a nearby pharmaceutical manufacturer; the pharmaceutical manufacturer could send some of the bio-sludge waste it produces to local farms as fertilizer, and the rest of the sludge might get processed into biofuel for the power station. Hot water from the pharmaceutical plant could be sent to the local wastewater treatment plant, which generates sludge, which could be sold to a soil remediation firm.
The power station could use it's excess heat to heat a bunch of local homes, some local greenhouses, and then they could also send some more excess heat to a fish farm. The sludge from the fish farm could be used as fertilizer at local farms.
The power station's fly ash and clinker could be sent to roadbuilders and cement manufacturers, and the oil refinery's recovered sulfur could be sold to a sulfuric acid manufacturer.
Such a theoretical symbiosis could prevent 200,000 tons of fly ash and clinker and 80,000 tons of scrubber sludge from going into a local landfill; 130,000 tons of carbon dioxide and 4,300-5,300 tons of sulfur/sulfur dioxide being released into the air; and 1,000,000 cubic meters of sludge headed to either the landfill or the sea.
Oh, wait - that's not fantasy, that's the Kalundborg Eco-industrial Park in Denmark. It's not 100% recycling, but it's fucking glorious.
-
Plastic recycling is a lie, sure.
Recycling other materials like aluminum, steel, copper, glass, and a ton of other materials is perfectly sound. Oil companies just piggybacked on the success with those materials to sell their lie.
Not as much as you think. Many of the recyclable materials you mentioned are “contaminated” with the contents they were used to deliver because folks don’t wash them well enough. It’s not their fault; we’re told to “rinse” the materials, but they really have to be fully washed, a tough task for many of those cans with crevices and ridges that are often missed. Other contaminants include throwing in what you think is the correct metal or plastic, but it’s not, and that ruins a whole batch.
-
I want the easiest path to have the most pleasant shit in the morning i can possibly have in the future.
They already mentioned the slumber shitter 5000 how much easier do you want it than ‘not needed’???
-
Not as much as you think. Many of the recyclable materials you mentioned are “contaminated” with the contents they were used to deliver because folks don’t wash them well enough. It’s not their fault; we’re told to “rinse” the materials, but they really have to be fully washed, a tough task for many of those cans with crevices and ridges that are often missed. Other contaminants include throwing in what you think is the correct metal or plastic, but it’s not, and that ruins a whole batch.
Raw materials come from the ground. By your standards of “contamination” aren’t raw materials much more contaminated?
A lot of work goes into refining glass, aluminum, steel, copper etc. A lot of impurities have to be removed to make those materials for the first time.
-
Raw materials come from the ground. By your standards of “contamination” aren’t raw materials much more contaminated?
A lot of work goes into refining glass, aluminum, steel, copper etc. A lot of impurities have to be removed to make those materials for the first time.
wrote last edited by [email protected]Metallurgy isn't my field, but here's an educated guess...
There are different kinds of contaminants. In raw ore you largely have silicate rock and metals. In recycled material you have relatively pure metal (alloys), and a large variety of volatiles.
Now with ore you can grind it all into sand, sift it, and smelt all the heavy grains. The rock should mostly just separate from the metal, these are just phase changes. But with recycling, those volatiles are going to burn and some are going to react with the metals, changing the chemical makeup. And with ore, you basically know what minerals you're working with. With recycled materials, it's anyone's guess. Does this can contain some food residue? Or an oil? Perhaps chemical cleaning agents? Is another plastic container stuffed inside?
There's a lot of variables with recycled materials, I imagine it's hard to predict how some of those variables react.
-
Recycling is a fraud. It was invented by the oil and plastic industry to pass the blame to consumers and shield themselves from repercussions. While some plastics CAN be recycled, its only numbers 1-3, every other plastic cannot be recycled or its so expensive that companies had no incentive to do it, and this still doesn't include paper that also has a limit on what it can be recycled to.
Paper can be recycled 7 times. Every time the quality degrades because the fibers get shorter. The last recycle is purely for toiletpaper or crêpe.
-
Not as much as you think. Many of the recyclable materials you mentioned are “contaminated” with the contents they were used to deliver because folks don’t wash them well enough. It’s not their fault; we’re told to “rinse” the materials, but they really have to be fully washed, a tough task for many of those cans with crevices and ridges that are often missed. Other contaminants include throwing in what you think is the correct metal or plastic, but it’s not, and that ruins a whole batch.
Comment from a German specialist in a thread about this from 2017:
Die nicht recykelbaren Reste wie Lebensmittelreste, Farbauftrag oder irgendwelche Etiketten verbrennen in der Schmelze und treiben oben auf dem flüssigen Metall als Schlacke, die einfach abgeschöpft und entsorgt werden kann.
Translation:
The non-recyclable residues, such as food scraps, paint coatings or labels burn off in the melt and float to the top of the molten metal as slags, which can simply be skimmed off and disposed of.
-
Comment from a German specialist in a thread about this from 2017:
Die nicht recykelbaren Reste wie Lebensmittelreste, Farbauftrag oder irgendwelche Etiketten verbrennen in der Schmelze und treiben oben auf dem flüssigen Metall als Schlacke, die einfach abgeschöpft und entsorgt werden kann.
Translation:
The non-recyclable residues, such as food scraps, paint coatings or labels burn off in the melt and float to the top of the molten metal as slags, which can simply be skimmed off and disposed of.
I was a process engineer in an aluminum plant. While I didn't directly work in remelt, this is correct as I understand it.
20:1 is the net energy usage for new aluminum smelting:recycling.
Recycle your metals please.
-
There's also the Guitang Group in China. They have a massive farm that grows sugar cane, which is processed at their sugar refinery and then sold. But the sugar refining process generates spent molasses, so they built a plant that takes the spent molasses and creates alcohol, which they then also sell.
The alcohol plant also creates alcohol residue, so they built a fertilizer plant that makes the alcohol residue into fertilizer, which they use on their sugar cane farm.
The sugar refinery also has crushed sugar cane as a result of their processing, so they built a plant to turn the crushed sugar cane into pulp, then a paper mill to turn the pulp into paper, which is sold.
The pulp plant creates a black liquid as a side product, so they send that through an alkali recovery process; the recovered alkali is sent back to the pulp plant to create more pulp.
The alkali recovery process also creates a white sludge byproduct so they built a cement mill. They take the white sludge from the alkali recovery process, along with the filter sludge that comes out of the sugar refinery, and make cement.
So they wanted to sell sugar, but they've limited pollution and waste, improved their plantation's output with inexpensive fertilizer, and also get to sell alcohol, paper and cement.
-
This post did not contain any content.
Unless industry is using the raw material produced from recycling, we'll never get to 100% recycling. People throwing stuff in the blue bag or green bin, whatever it is in your region, that's only the first step. We are a long way off from 100%. We have countries who have refused to accept shipments of recycled products because there's no market for that material.
-
I was a process engineer in an aluminum plant. While I didn't directly work in remelt, this is correct as I understand it.
20:1 is the net energy usage for new aluminum smelting:recycling.
Recycle your metals please.
https://m.youtube.com/shorts/f5-Ljn7GX_8
This short explains the German mindset about recycling. The only difference is that in Germany, the letter would be laminated.
-
Recycling is a fraud. It was invented by the oil and plastic industry to pass the blame to consumers and shield themselves from repercussions. While some plastics CAN be recycled, its only numbers 1-3, every other plastic cannot be recycled or its so expensive that companies had no incentive to do it, and this still doesn't include paper that also has a limit on what it can be recycled to.
SOME recycling is a fraud. Glass, metal and paper is great for recycling.
Plastic in general is just awful.
-
Raw materials come from the ground. By your standards of “contamination” aren’t raw materials much more contaminated?
A lot of work goes into refining glass, aluminum, steel, copper etc. A lot of impurities have to be removed to make those materials for the first time.
Raw materials is not what we’re talking about here. Local recycling plants are not processing raw materials - that’s a completely different process. They are very limited systems designed to process consumer materials.
-
Comment from a German specialist in a thread about this from 2017:
Die nicht recykelbaren Reste wie Lebensmittelreste, Farbauftrag oder irgendwelche Etiketten verbrennen in der Schmelze und treiben oben auf dem flüssigen Metall als Schlacke, die einfach abgeschöpft und entsorgt werden kann.
Translation:
The non-recyclable residues, such as food scraps, paint coatings or labels burn off in the melt and float to the top of the molten metal as slags, which can simply be skimmed off and disposed of.
I’m not saying we shouldn’t recycle, we of course should. But most local recycling plants don’t have that capability.
And the biggest problem are plastics - glass and metal materials are much more forgiving.
-
Raw materials is not what we’re talking about here. Local recycling plants are not processing raw materials - that’s a completely different process. They are very limited systems designed to process consumer materials.
We’re talking about whether recycling is feasible.
Whether or not it is feasible is decided by how hard it is to do compared to just making new materials.
Your comment seemed to be saying the contaminates in recycling make them harder to recycle back to their raw materials (compared to making new raw materials).
-
Comment from a German specialist in a thread about this from 2017:
Die nicht recykelbaren Reste wie Lebensmittelreste, Farbauftrag oder irgendwelche Etiketten verbrennen in der Schmelze und treiben oben auf dem flüssigen Metall als Schlacke, die einfach abgeschöpft und entsorgt werden kann.
Translation:
The non-recyclable residues, such as food scraps, paint coatings or labels burn off in the melt and float to the top of the molten metal as slags, which can simply be skimmed off and disposed of.
Yeah, contaminants aren't a big deal with metal recycling.
-
Metallurgy isn't my field, but here's an educated guess...
There are different kinds of contaminants. In raw ore you largely have silicate rock and metals. In recycled material you have relatively pure metal (alloys), and a large variety of volatiles.
Now with ore you can grind it all into sand, sift it, and smelt all the heavy grains. The rock should mostly just separate from the metal, these are just phase changes. But with recycling, those volatiles are going to burn and some are going to react with the metals, changing the chemical makeup. And with ore, you basically know what minerals you're working with. With recycled materials, it's anyone's guess. Does this can contain some food residue? Or an oil? Perhaps chemical cleaning agents? Is another plastic container stuffed inside?
There's a lot of variables with recycled materials, I imagine it's hard to predict how some of those variables react.
For metals, it's pretty trivial to remove slag (contaminants) from the metal. Basically everything floats to the top and you can just scrape it off.
-
Where I live it's only 1-2. Also, sorting is a challenge, and we often don't know if it actually gets recycled or ends up on a ship to India.
wrote last edited by [email protected]Ours just goes to the landfill. I happened to be behind one of the recycling trucks when I was on a dump run once, and it pulled into the same trash pile I did.
Stopped paying $25 a month for it when I got home.
