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Re:Chemists tackle the tough challenge of recycling mixed pl... by culi on Monday May 01, 2023 @08:30PM (#35781415)
In some cities garbage workers are intstructed to take a look at a recycling bin beforehand. If they see a single plastic bag they dump the whole thing with the landfill pile. Same for "compostable plastic bags". Bags break really expensive machinery regularly and are probably one of the single worst things you could throw away

There are so many gaps like these in the public's understanding of how recycling works (and doesn't!) and the reality. Mixed plastics are useless; you need to wash your dirty plastics; the triangle doesn't mean it's recyclable it's there to tell you what type of plastic it is (usually only 1, PET, and 2, HDPE, are recyclable). These are the very basics of recycling that, from my experience, the majority of people don't understand. It would take literally 10 minutes to explain most of this to people

We keep bending over backwards trying to innovate our way towards making recycling really behave like the magic green plastic/paper eating box people imagine it to be but I feel like we'd get so much more return on investment if we spent a fraction of our investments on simple public education. At least at this point where that latter investment is basically nil in most places

Re:Chemists tackle the tough challenge of recycling mixed pl... by scrollaway on Monday May 01, 2023 @08:50PM (#35781610)
Educating people to spend time solving themselves a problem over-and-over forever, versus expanding our knowledge of material science to solve that same problem for everyone, once and for all?

I know which one's preferable.

Re:Chemists tackle the tough challenge of recycling mixed pl... by culi on Monday May 01, 2023 @08:56PM (#35781663)
It's not one or the other. It's that we're spending millions into one category and zero in another.

Zero waste is already technically achievable with the technologies we have today. Kamikatsu, Japan is an extreme example where they sort their waste into 34 different bins.

We don't have to do all that but we would see extreme immediate benefits from even slightly abandoning George Bush's "the American lifestyle is non-negotiable" proclamation

Re:Chemists tackle the tough challenge of recycling mixed pl... by bluGill on Monday May 01, 2023 @09:11PM (#35781812)
The sorting doesn't really work as odds are too strong that someone in the city made a mistake and so you have to resort everything anyway. Automatic sorting machines that don't make mistakes are a better bet in the long run.

Don't forget to account for the costs of 34 separate dumping operations, generally with 34 different trucks, which is itself and environmental disaster.

Re:Chemists tackle the tough challenge of recycling mixed pl... by nmg on Monday May 01, 2023 @08:53PM (#35781632)
(Is it either/or?)
Re:Chemists tackle the tough challenge of recycling mixed pl... by hgsgm on Monday May 01, 2023 @08:56PM (#35781661)
This is because recycling is a fraud whose primary goal is to make people overcome their opposition to consuming wasteful plastics.
Re:Chemists tackle the tough challenge of recycling mixed pl... by tmountain on Monday May 01, 2023 @09:10PM (#35781808)
This—it’s a tactic to alleviate guilt from the consumer for buying single use plastics. The best education is to let people know that the vast majority of plastic will not be recycled.
Re:Chemists tackle the tough challenge of recycling mixed pl... by dividedbyzero on Tuesday May 02, 2023 @05:05AM (#35784997)
My motivation to recycle and sort took a big dip when I found out that where I previously lived the plastics bin gets carted off to incineration, all of it, no recycling in place because apparently that wasn't economically viable.
Re:Chemists tackle the tough challenge of recycling mixed pl... by userbinator on Monday May 01, 2023 @10:46PM (#35782678)
That should really be said of "biodegradable" or any -degradable.

Plastics are pretty much an optimum in terms of energy required to produce vs. durability, so deliberately decreasing the latter is the real waste and the result of an agenda of planned obsolescence.

Re:Chemists tackle the tough challenge of recycling mixed pl... by carabiner on Tuesday May 02, 2023 @02:20AM (#35784009)
Plastic recycling certainly is. Not sure about other materials. Plastic recycling is a scam from the petrochemical industry though and doesn't work.
Re:Chemists tackle the tough challenge of recycling mixed pl... by saberworks on Monday May 01, 2023 @08:59PM (#35781688)
I understand the sentiment but it's not a solution. The only solution is to prohibit plastic packaging or force companies to use types of plastic that are easy to recycle. I believe it's easier to regulate the company producing the waste than try to get the entire population to agree on and behave in a certain way.
Re:Chemists tackle the tough challenge of recycling mixed pl... by sgillen on Monday May 01, 2023 @09:06PM (#35781764)
True but there would also be more public pressure to regulate if people knew just how little of their recycling actually gets recycled.
Re:Chemists tackle the tough challenge of recycling mixed pl... by jaggederest on Monday May 01, 2023 @10:15PM (#35782442)
https://epr.sustainablepackaging.org/

As is standard, perhaps, the concept and ideas are already well-established, the only requirement is to enact them. I also suspect that many of the initiatives are pretty weak, watered down by packaging producers who don't want to bear the full cost of waste management.

Re:Chemists tackle the tough challenge of recycling mixed pl... by sfpotter on Monday May 01, 2023 @10:26PM (#35782537)
Why should we not try to get the population to behave a certain way? The alternative is a society full of people who behave antisocially, acting as if only their needs matter. It’s hard to say whether a concerted effort to make people more invested in the civic good will be effective, but throwing our hands in the air will undoubtedly have the intended effect.
Re:Chemists tackle the tough challenge of recycling mixed pl... by Eisenstein on Monday May 01, 2023 @11:17PM (#35782886)
Because changing one thing that has a huge impact (the manufacturer) is a lot easier than changing hundreds of millions of things with each a tiny impact (people's habits).
Re:Chemists tackle the tough challenge of recycling mixed pl... by sfpotter on Tuesday May 02, 2023 @12:29PM (#35790086)
"It's hard so don't try."
Re:Chemists tackle the tough challenge of recycling mixed pl... by Eisenstein on Tuesday May 02, 2023 @12:51PM (#35790484)
How about, instead of doing the almost-impossible thing that is not necessary or logical (why should everyone else change in order to offset lost profits for a company that doesn't care about them?), do the easy thing that is practical and rational.

Or you can decry society for doing the easy thing, but remember that trying to shape outcomes when dealing with large numbers of people almost always leads to consequences that seem obvious in hindsight but were unpredictable at the onset.

Re:Chemists tackle the tough challenge of recycling mixed pl... by saberworks on Tuesday May 02, 2023 @05:12PM (#35794283)
FWIW in Washington state where I live (and in the 3 cities/towns I've lived in here), multiple times a year Waste Management/WM sends out a flyer explaining what can and can't be recycled. It changes over time and it's extra confusing because the recycle cans have different rules printed on them than what is in the flyer. We used to be able to recycle juice boxes and milk cartons, no more. Then we were supposed to recycle glass jars and their metal lids, but now "no lids of any kind." We were told to flatten and recycle all paperboard boxes, but now we are supposed to skip recycling any paperboard boxes that have a clear coating on them (every freezer box, according to their instructions). Plastic bags have always been prohibited. But of course I see my neighbors putting plastic bags in their cans all the time. There are so many rules about what plastics can be recycled that I can't even remember them.

I think the "education" aspect has been attempted and it's not working. It's time to go nuclear and have the government dictate what types of materials can be used for packaging and ban everything else.

If I never see another blister pack it will be too soon.

Re:Chemists tackle the tough challenge of recycling mixed pl... by doctor_eval on Monday May 01, 2023 @11:17PM (#35782892)
I feel that this has things inverted. People generally don’t care about the packaging or even the materials in the product. Those choices are made almost entirely by the seller.

Why should the buyer be responsible for cleaning up the seller’s mess?

If it’s possible to economically create products that don’t produce waste then this should be mandated, because otherwise there will always be some asshole corporation who is willing to undercut competitors on price by externalising costs to the environment.

Re:Chemists tackle the tough challenge of recycling mixed pl... by sfpotter on Tuesday May 02, 2023 @12:29PM (#35790084)
"Getting buyers and sellers to both behave responsibly is mutually exclusive."
Re:Chemists tackle the tough challenge of recycling mixed pl... by kitsunesoba on Tuesday May 02, 2023 @01:07AM (#35783576)
I can't speak for other countries, but in the US trying to get everybody on the same page in terms of recycling habits would be worse than herding cats.

It's not something anybody wants to put energy towards because they're trying to keep 50 other plates spinning at any given time (which as an aside, is also a huge source of plastic waste because nobody has the time or energy to cook) and there's also a chunk of the population who will take any kind of push to change behavior as a personal affront.

You can probably get a small percentage to adhere fully and a slightly larger to partially adhere, but I agree with parent comments that it's better to make companies use materials that are easier to recycle in the first place.

Re:Chemists tackle the tough challenge of recycling mixed pl... by sfpotter on Tuesday May 02, 2023 @12:32PM (#35790137)
I don't disagree with what you're saying, but it isn't mutually exclusive with having the government do what it can do educate the public in order to get them behave more responsibly and civically minded. Obviously this would require a bit of a re-think in terms of what we value as a society. Doesn't mean that it isn't worth trying.
Re:Chemists tackle the tough challenge of recycling mixed pl... by switchbak on Tuesday May 02, 2023 @01:14AM (#35783623)
The plastics lobby argued in favour of single use plastics many decades ago, and that's where the focus on end consumer responsibility comes from. These were literally the same PR firms that used those same tricks on behalf of the tobacco industry not long before that.

Putting the onus exclusively on the end consumer is the easiest way to ensure the industry doesn't bear the burden and expense, and that's entirely the point.

Re:Chemists tackle the tough challenge of recycling mixed pl... by sfpotter on Tuesday May 02, 2023 @12:33PM (#35790154)
I am not advocating that we put the onus exclusively on the consumer.
Re:Chemists tackle the tough challenge of recycling mixed pl... by joshspankit on Monday May 01, 2023 @10:42PM (#35782651)
This is a controversial position, but: Because technology exists for all product packaging to be made from single-process-recyclable/biodegradable materials and only using plant-based ink we could force companies to use it. This would drastically change the marketing landscape and make it much less shiny but everyone would be on the same level field and consumers would adapt.
Re:Chemists tackle the tough challenge of recycling mixed pl... by berjin on Tuesday May 02, 2023 @06:23AM (#35785488)
The other way is to reuse very inert materials like stainless steel or glass. Outlaw all the silly marketing designs and make them standarized like shipping containers and buy them back from the consumer. It used to work this way before plastics came along anyway. Beer and milk bottles would be swapped for instance.
Re:Chemists tackle the tough challenge of recycling mixed pl... by sumtechguy on Tuesday May 02, 2023 @08:32AM (#35786424)
Right now we have 4 items we can basically recycle.

Glass -> fairly straight forward to recycle Metal -> fairly straight forward to recycle Paper -> depends and very water intensive but kind of OK and not totally terrible if it is just burnt. But nearly as all over the place as plastic. Plastic -> All over the place and dozens upon dozens of differing types rules regulations and depending on your local area how much is actually 'recycled' (a lot less than you think)

Then on top of that we are to reduce, reuse, recycle. The manufactures have skipped the first two steps and blame us for it.

Plastic is the worst of them to recycle it has the least recyclability. I have seen estimates from anywhere for 5% to 10% of the total plastic stream. Then customer shaming and deceptive tactics to make me feel bad for this. The bottom line is plastic is the worst for recyclability yet we use it for a good portion of our containers. We are worried about plastic straws and yet a good portion of the food I buy comes in a plastic container. Instead we should be putting pressure on the upstream to give us containers that they and we can reuse.

Re:Chemists tackle the tough challenge of recycling mixed pl... by ZeroGravitas on Tuesday May 02, 2023 @11:41AM (#35789296)
It's worth separating out the packaging waste in statistics e.g. if you buy a plastic doll in plastic packaging, the doll might account for most of the plastic.

If you buy a plastic lawn chair there may be no packaging, but still a sizeable lump of plastic.

Package recycling (and reclamation) rates are surprisingly good, even in the US which you'd think is culturally incapable based on the anecdotes you hear. It seems like big cities where lots of people live are doing better than less dense areas where relatively few people live, which keeps the stats high.

See historical graphs and charts here:

https://www.epa.gov/facts-and-figures-about-materials-waste-...

Re:Chemists tackle the tough challenge of recycling mixed pl... by tivert on Tuesday May 02, 2023 @02:23AM (#35784031)
> ...or force companies to use types of plastic that are easy to recycle.

And code them in such a way that allows easy automatic sorting, say by requiring type-specific colors (e.g. PET is allowed only certain shades, and HDPE different shades, etc.).

Re:Chemists tackle the tough challenge of recycling mixed pl... by teeray on Monday May 01, 2023 @09:10PM (#35781797)
You have to assume that any adherence to a recycling regime will have a spectrum of success never reaching 100%. Someone will fill their bin with all kinds of non-recyclable plastic. They won’t always clean them out. Education can improve this situation but it can’t eliminate it. We have to assume failure at some level and design for it instead of chasing the unattainable 100% compliance.
Re:Chemists tackle the tough challenge of recycling mixed pl... by dehrmann on Monday May 01, 2023 @09:42PM (#35782131)
In the office I work with smart tech people, I see mistakes all the time. You basically have to read the entire recycling guide to get it right. So yes, it has to be built for 90% compliance.
Re:Chemists tackle the tough challenge of recycling mixed pl... by czynskee on Tuesday May 02, 2023 @12:34AM (#35783401)
In Switzerland they have a “simple” solution to this problem. The onus is on the consumer to make sure all recyclables are washed and split appropriately. There are different bins for metals, paper, compost, and the different kinds of plastic. The municipality randomly checks your bags and fines you if you don’t do this right. Regular trash has to go in specific bags that are much more expensive.

Basically the incentives are setup such that everyone takes the 10 extra minutes to do it right. People are annoyed but once you have a system down it’s not really hard to do.

I think this is the way to go. Everyone pitches in to make recycling work. In the long run it may even incentivize sellers to make their products easy to recycle, as buyers are forced to care.

Note I may have some details wrong as this is based on what I remember from living there 10 years ago.

Re:Chemists tackle the tough challenge of recycling mixed pl... by beerpls on Tuesday May 02, 2023 @12:55AM (#35783516)
“ Everyone pitches in to make recycling work. In the long run it may even incentivize sellers to make their products easy to recycle, as buyers are forced to care.”

I just bought about 15 pounds of plastic in the form of bottles and material and whatnot from the store. Then at the front they refused to give me plastics bags weighing a few grams.

There’s no way in hell any reasonable person should be on board with these kinds of taxes or policies. All they will end up doing is making people pay money to the rich, while the rich don’t do anything but continue to use more plastic for their purposes

You want change, charge the company for plastic straight away. Stop expecting consumers to bear the burden of corporate greed

Re:Chemists tackle the tough challenge of recycling mixed pl... by toxik on Tuesday May 02, 2023 @02:10AM (#35783945)
Hear hear. And even then, plastic grocery bags are part of a beautiful, closed system of becoming trash bags. Now I have to go to the store, buy a literal roll of plastic bags, and carry it home in a non-plastic bag, then throw my garbage in this one-time-use garbage bag.

Congratulations! Progress has been made at you.

Re:Chemists tackle the tough challenge of recycling mixed pl... by mschild on Tuesday May 02, 2023 @02:27AM (#35784060)
Do you have to use bags or do just do it because you've always done it?

We have similar recycling setup in Germany. I don't use bags for any of them.

Re:Chemists tackle the tough challenge of recycling mixed pl... by toxik on Tuesday May 02, 2023 @03:59AM (#35784620)
We are not allowed to throw trash without bags for obvious reasons. I'm not sure I understand what you even mean by that.
Re:Chemists tackle the tough challenge of recycling mixed pl... by Filligree on Tuesday May 02, 2023 @04:27AM (#35784775)
What are the obvious reasons? Doesn't your trash go in a trash can?
Re:Chemists tackle the tough challenge of recycling mixed pl... by toxik on Tuesday May 02, 2023 @05:05AM (#35784995)
Where do you empty your trash can?

Let’s say you throw away something sticky, maybe a dirty diaper, or something else. You don’t want to get that stuff on your own trash can, and the garbage collectors don’t want to deal with soiled garbage bins either. It is simply about sanity, residues and stuff attracts rodents and other pests.

Both in apartment buildings and in houses with trash collection, the rule is that you put the trash in bags.

Re:Chemists tackle the tough challenge of recycling mixed pl... by mschild on Tuesday May 02, 2023 @06:04AM (#35785355)
All buildings have larger bins (between 240 and 1100 litres) on the outside or in a specified area. Those are picked up by the waste companies. There is no need to specifically place waste into a bag. You can just put it straight into the container.

We generally don't have all that much super sticky trash. We also simply clean our bins when needed. Our organic waste bin, for example is simply lined with an unbleached kitchen paper towel that gets dumped into the container as well.

Re:Chemists tackle the tough challenge of recycling mixed pl... by zeta0134 on Tuesday May 02, 2023 @07:42AM (#35786054)
Where I live, the large trash bin is collected by a small company that sends non standardized trucks. The workers open the bin and manually empty it, one bag at a time, by hand.

Not everyone lives in a big city. I'm not sure what I could put my garbage in to make their job easier other than some sort of bag. Find me a non-plastic bag that can fulfill this purpose and we'll have a reasonable solution. But since there is literally no other trash collection game in town, for now, the bags stay. I'll find other ways to reduce my plastic consumption, but I don't expect to fully eliminate it.

Re:Chemists tackle the tough challenge of recycling mixed pl... by mschild on Tuesday May 02, 2023 @08:15AM (#35786280)
That sounds tedious.

Part of the solution to that is to standardize it. Even outside of cities, the bins are the same and can be picked up by the trucks automatically. The only manual part is rolling it to and from the truck.

Of course, generally usingess plastic is always the better option.

Re:Chemists tackle the tough challenge of recycling mixed pl... by kaikai on Tuesday May 02, 2023 @11:24AM (#35788986)
Just in case your request for a non-plastic bag was a real one, you can buy large strong paper bags for yard waste at home improvement stores.

I live rurally in the us, and don’t use trash bags at all. Our trash trucks pick up the bin and dump it into the truck rather than unloading in manually. I have noticed more roadside trash on trash days, because of unbagged trash.

Re:Chemists tackle the tough challenge of recycling mixed pl... by Delphiza on Tuesday May 02, 2023 @08:54AM (#35786664)
The implementation of this was interesting in Switzerland. Because consumers had to pay a lot for waste, they started to remove packaging at the store and dumping it there for the store to deal with. Stores had the cost of removing packaging waste and put pressure on the supply chain. If customers start removing toothpaste tubes and cereal from cardboard boxes and dumping it the store's door, then the store has to deal with the overproduction of waste.
Re:Chemists tackle the tough challenge of recycling mixed pl... by illiac786 on Wednesday May 03, 2023 @11:24AM (#35803509)
Take the habit of putting bags in your car, reuse them. It takes a while to have a system but now I have bags in my cars, a bag in my work backpack, etc.

I don't need any plastic or paper bag ever and additionally, my bags are much nicer and much more heavy duty...

Re:Chemists tackle the tough challenge of recycling mixed pl... by Tade0 on Tuesday May 02, 2023 @02:01AM (#35783899)
I've spent a few months in Switzerland in 2020 and all I've seen were PET and non-PET bins for plastics.

But the rest of the world has that already in the form of public bins for plastic bottle caps, as these are made from PET.

In any case fines or no fines I doubt this is enough if a single piece of trash can ruin a whole batch.

I can assure you that I for one have thrown trash in the wrong bin at least twice - or maybe more because I still don't know the details of recycling in that country.

Re:Chemists tackle the tough challenge of recycling mixed pl... by mock-possum on Tuesday May 02, 2023 @03:05AM (#35784303)
Sounds like a regressive tax to me - rich men can pay sorters to avoid ever wasting their own time on recycling, poor men who can least afford the time and effort and fines if they get it wrong meantime suffer under the system.

Much better approach would be tax-funded recycling sorters - much more cost efficient to do all the work at the point of collection besides, allows for training and specialized equipment.

Re:Chemists tackle the tough challenge of recycling mixed pl... by kenhwang on Tuesday May 02, 2023 @03:56AM (#35784594)
Austria is kinda the same way. We had to sort everything into one of 6 bins. But there was only one bin for all plastics.

The 6 bins is fine (metal, glass, paper, organic, plastic, landfill), further sorting the plastics into the 7 kinds currently labeled might be a bit much (especially since only like 3 of them are commonly recycled).

I was curious about how they solved the mixed plastics problem, and quick searching around suggests most of the plastic gets incinerated.

Re:Chemists tackle the tough challenge of recycling mixed pl... by soco on Tuesday May 02, 2023 @04:37AM (#35784829)
There are containers for recyclables where you personally dump your bags brought along, so there's no bag for the municipality to check. You maybe mix this up with the fine for using non-fee garbage bags? The only check they can do is when looking at your recycled paper stack whether it has also cartons, then they'll leave it on your roadside (and if you're around they'll also tell you why). But that's hardly noteworthy.

In any case, Swiss shops are starting to take in also the new category of "non recyclable plastics" as in non-PET wrappings/recipients/tetrapack/anything. No idea where those go though, I never thought to check if they're burnt or exported.

Re:Chemists tackle the tough challenge of recycling mixed pl... by userbinator on Monday May 01, 2023 @09:33PM (#35782048)
but I feel like we'd get so much more return on investment if we spent a fraction of our investments on simple public education.

For a great example of this, look at Japan.

Bags break really expensive machinery regularly and are probably one of the single worst things you could throw away

I've seen dedicated bins just for recycling bags, but as you mentioned, the problem is in educating people to sort plastics correctly.

Of course, reuse comes before recycle, and lots of things that are supposedly "single use" can really be reused instead of buying something else, but many people don't even bother to think.

Re:Chemists tackle the tough challenge of recycling mixed pl... by rjsw on Tuesday May 02, 2023 @05:30AM (#35785146)
In the UK, supermarkets have bins for recycling plastic bags. Not just shopping bags, plenty of plastic packaging is labelled "recycle at supermarket".
Re:Chemists tackle the tough challenge of recycling mixed pl... by s17n on Monday May 01, 2023 @10:33PM (#35782591)
Empirically, most people weren’t willing to do this stuff (the kind of education you’re talking about was common in early recycling programs) and recycling only became widespread with the advent of single stream. Maybe advocates just need to try harder, though.
Re:Chemists tackle the tough challenge of recycling mixed pl... by culi on Monday May 01, 2023 @10:44PM (#35782663)
> Empirically, most people weren’t willing to do this stuff

People had to be taught to throw things away. Seriously, just look at vintage 1950s advertisements introducing the concept of "disposables."[0] This was commercial and government interests aligned on what to do about all the production capacity and factories from the war economy now that the war had ended. The conclusion was a total transformation of our society centered around consumption

I think it's important to bring some historical context and remember that what needs to happen here isn't so much "learning" as it is "unlearning"

[0] https://www.huffpost.com/entry/vintage-ads-plastic_n_5cdb176...

Re:Chemists tackle the tough challenge of recycling mixed pl... by bavent on Monday May 01, 2023 @10:56PM (#35782737)
I remember a scene in the show "Mad Men" where they just flick out their blanket to scatter all trash from a picnic and then leave. I thought it had to be satire but I asked an older coworker and he said it was pretty accurate to how things were when he was a kid.
Re:Chemists tackle the tough challenge of recycling mixed pl... by userbinator on Monday May 01, 2023 @10:57PM (#35782753)
Ironically, plastic bags were invented to be reusable.
Re:Chemists tackle the tough challenge of recycling mixed pl... by eesmith on Tuesday May 02, 2023 @03:01AM (#35784284)
The term "disposable" might be a post-war thing (The Google Ngram views for "disposable" https://books.google.com/ngrams/graph?content=disposable&yea... and "disposables" https://books.google.com/ngrams/graph?content=disposables&ye... are pretty neat.)

However, the concept is older. One-use paper Dixie Cups started around 1910, replacing the shared cup.

"How unsanitary!" you might think of the old system.

Sure, but the Dixie Cup Company sure did promote that hard. "Just think of the luxury—a new cup filled with pure water all for a cent" - https://journals.sagepub.com/doi/pdf/10.1525/ctx.2010.9.1.73

Re:Chemists tackle the tough challenge of recycling mixed pl... by Choco31415 on Monday May 01, 2023 @11:02PM (#35782789)
One of the things I’ve seen at universities a lot are signs on the recycling and garbage bins saying what is allowed and not. Maybe recycling bins could have more of that to help people know what’s okay or not.

Do you think it’d help if the plastic type label was color coded too? Say yellow for PET, red for HDPE, etc, to help people recycle only the right plastics.

Generally I’ve seen that it’s not that people don’t understand recycling, it’s that it takes energy and effort to figure out what to do and it’s not always easy.

Re:Chemists tackle the tough challenge of recycling mixed pl... by ploxiln on Monday May 01, 2023 @11:26PM (#35782959)
I live in a nice condo building. Every floor has a recycling room, with a sign above the two bins that says "no bags, put recyclables directly in bins". I still see a lot of bags.

I think there just needs to be someone supervising saying "For real, seriously, no bags." I think people just don't know if it's a real rule, or an over-simplified kinda fake rule, like wear a helmet. In fact, I don't know, I just have a weird engineer mind that wants things to work right, whatever they are.

Actually I think we need people to be told, in school and at recycling points: "you don't have to pretend to be green, just throw it away if you don't care". It seems to me that recycling is one of the least controversial things, everyone knows it's good and wants to support it, just not many people evidently care that it's done in a way that actually works. Again, as an engineer, this bothers me.

Re:Chemists tackle the tough challenge of recycling mixed pl... by yourapostasy on Monday May 01, 2023 @11:27PM (#35782966)
The Precious Plastic project shows how to recycle plastic grocery bags into a polyethylene feedstock to manufacture new objects with [1]. You can also turn grocery bags into 3D printer filament. The technology is within reach of intentional communities to maintain, so they turn what is usually a waste stream into an asset.

[1] https://community.preciousplastic.com/how-to/create-marble-f...

Re:Chemists tackle the tough challenge of recycling mixed pl... by mngnt on Tuesday May 02, 2023 @12:18AM (#35783314)
>> wash your dirty plastics

I've thought about this a lot. Is it worth wasting water, derergent and energy to clean a yogurt cup, for instance? Does the plastic-waste-recycled outweigh the water-wasted? I never found an answer, maybe this is a really tough comparison? Too apple vs. orange? (Edited for spelling)

Re:Chemists tackle the tough challenge of recycling mixed pl... by hn_user2 on Tuesday May 02, 2023 @01:15AM (#35783633)
Especially if my clean plastics will get mixed in with a bunch of dirty plastics and then rewashed in with that batch. I don’t know the answer either but would love to find out so I can be a better citizen about it.
Re:Chemists tackle the tough challenge of recycling mixed pl... by abdullahkhalids on Tuesday May 02, 2023 @01:21AM (#35783671)
The CO2 impact of potable residential water in most places is minimal, about 0.22g/liter [1].

[1] https://www.danfoss.com/en/about-danfoss/articles/dhs/the-ca...

Re:Chemists tackle the tough challenge of recycling mixed pl... by j-bos on Tuesday May 02, 2023 @04:28AM (#35784782)
If CO2 is the concern, wouldn't sending that plastic (carbon) to a landfill (sequestering) be even better?
Re:Chemists tackle the tough challenge of recycling mixed pl... by ZeroGravitas on Tuesday May 02, 2023 @05:30AM (#35785143)
No, basically all Lifetime Cost Analysis of plastic recycling suggest it saves carbon/GHG to recycle.

The people who believe otherwise seem to get their information from fossil fuel funded "libertarian" sources, that seem to magically always conclude that selling more fossil fuels is the best possible answer to every question.

Re:Chemists tackle the tough challenge of recycling mixed pl... by kurthr on Tuesday May 02, 2023 @01:27AM (#35783709)
Your yogurt cup is almost always PP (Polyproylene) Type 5 to maintain stiffness at large size. In that case the answer is throw it in the garbage, they're going to burn it or send it to China/Africa anyway.

The one that blows my mind is washing aluminum cans (or steel). How do you think they're going to get the plastic coating off the cans and remelt it?

I mean don't recycle a full can, but they have washers for recycled materials too.

Re:Chemists tackle the tough challenge of recycling mixed pl... by tivert on Tuesday May 02, 2023 @02:21AM (#35784014)
> The one that blows my mind is washing aluminum cans (or steel). How do you think they're going to get the plastic coating off the cans and remelt it?

> I mean don't recycle a full can, but they have washers for recycled materials too.

I'm sure they have washers, too, but how well will they work for sticky, dried on stuff?

Also washing helps prevent the bin from getting smelly.

Re:Chemists tackle the tough challenge of recycling mixed pl... by was_a_dev on Tuesday May 02, 2023 @02:41AM (#35784152)
It all ends up as slag when smelted
Re:Chemists tackle the tough challenge of recycling mixed pl... by Sankozi on Tuesday May 02, 2023 @03:26AM (#35784428)
You should never wash any trash. Either it is recycled properly and it is washed in highly efficient manner or it isn't and washing doesn't matter.

Looking at it from the other perspective - the trash is rarely worth even the few seconds of the time you spend washing it.

Re:Chemists tackle the tough challenge of recycling mixed pl... by snassar on Tuesday May 02, 2023 @01:48AM (#35783814)
I don't know how it is in other countries. We recently wondered what the right thing to do is and the Citystate of Berlin has an FAQ on recycling: https://www.bsr.de/die-top-13-mullmythen-26874.php which makes some things explicit:

(It is in German, but deepl translated the relevant section)

Do empty bottles and packaging have to be washed out?

No. Because the packaging is rinsed out in the recycling process, when the sorted plastics are shredded. It is only important that all packaging is emptied of residues [ed. The translation misses tmthat they mean large residue or levtover amounts], is not stacked and the lid is removed.

Re:Chemists tackle the tough challenge of recycling mixed pl... by xyzal on Tuesday May 02, 2023 @01:50AM (#35783826)
Recently, I was at a local shopping center, and there were trash bins with the usual three color marked holes for recycling ... but under them, if you peeked close enough, you saw there was one collecting bag where everything went. Made me sad.
Re:Chemists tackle the tough challenge of recycling mixed pl... by entropyie on Tuesday May 02, 2023 @02:28AM (#35784070)
This is the wrong attitude. This is victim blaming. Expecting ordinary people to understand the bewildering array of plastic types, biofilms and composite materials is not realistic. Add to that deceptive packaging (like the infamous green triangle that doesn't mean it's recyclable at all). The solution is to tackle it at the source of all this waste. Tax the shit out of supermarkets and shops that sell non recyclable packaging.
Re:Chemists tackle the tough challenge of recycling mixed pl... by samirillian on Tuesday May 02, 2023 @07:47AM (#35786099)
I think you're posing a false dichotomy here. I, as a person who is still fuzzy on how to recycle, did not feel blamed. I agree with the general sentiment; nobody knows the rules! We should've had a whole class on shit like this in high school. Obviously, there are larger problems caused by unfettered capitalism at work, but increasing recycling and composting infrastructure, hand-in-hand with public education on how to use that infrastructure, would make things better, and probably add some intangible benefits, like feeling some degree of agency over the process, which would have positive externalities like making people feel like they might have some greater agency over the bigger, structural problems, which might lead to greater political/economic change.
Re:Chemists tackle the tough challenge of recycling mixed pl... by Natsu on Tuesday May 02, 2023 @04:05AM (#35784651)
> In some cities garbage workers are intstructed to take a look at a recycling bin beforehand. If they see a single plastic bag they dump the whole thing with the landfill pile.

I once saw someone throw a couch away in the recycling bin...

Re:Chemists tackle the tough challenge of recycling mixed pl... by rjsw on Tuesday May 02, 2023 @05:25AM (#35785116)
Seems sensible, wish they did that here so I didn't have to keep moving dirty bags between bins.

I recycle correctly but one apartment in the block is being used as an AirBnB, every week there is random waste in every recycling bin.

Re:Chemists tackle the tough challenge of recycling mixed pl... by ClumsyPilot on Tuesday May 02, 2023 @06:10AM (#35785389)
in Britain we have 100 different municipalities and all of them differ in their recycling policies and capability
Re:Chemists tackle the tough challenge of recycling mixed pl... by TonyTrapp on Tuesday May 02, 2023 @06:28AM (#35785518)
> you need to wash your dirty plastics

Funny, I heard the exact opposite in a documentary about one of these recycling facilities, from the people running the facility. They should probably know. Though it may also very much depend on the facility itself.

Re:Chemists tackle the tough challenge of recycling mixed pl... by cultureswitch on Tuesday May 02, 2023 @07:26AM (#35785926)
As someone who actually knows this stuff, effectively sorting my trash is way too much effort for effectively very little return as I also know chances are even if I do it right my stuff will be burned anyway.

It is completely unrealistic to expect the average trashbin user (as in literally everyone even if you can't read) to follow recycling instructions for plastic (paper tends to be simpler). It's much too complicated and a majority of the packaging you'll find in supermarkets involves way too much effort separating the materials.

Re:Chemists tackle the tough challenge of recycling mixed pl... by spicyusername on Tuesday May 02, 2023 @07:50AM (#35786124)
Why is it unrealistic?

Is it reasonable to expect every important problem or social responsibility to be easy or unobtrusive?

Sometimes you may both need to do something and it's inconvenient...

Re:Chemists tackle the tough challenge of recycling mixed pl... by quickthrowman on Tuesday May 02, 2023 @01:18PM (#35790982)
It’s all theater and not worth doing, we should recycle metal, glass, and paper and burn/bury the plastic. We might as well be honest with ourselves about where our waste goes instead of pretending we recycle it.