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New plant-based plastics can be chemically recycled with near-perfect efficiency

academictimes.com

101–110 of 272 posts

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#101

Earlier quoted context omitted.

There are more species than humans who need to reproduce.

That is a good point, maybe something like one-child policy better serve this need. Or possibly we must consider which is worse for animals, damage from climate change or damage from endocrine disruptor.

> one-child policy better serve this need

Over my cold dead body [and I won't go without a fight.].

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#102

The real problem with plastics is that they are really cheap.

"Really cheap" in the short term perhaps. Very expensive in the long term.

What price do you put in the extinction of a species? Millions of years of evolution flushed down the toilet so one person can have their disposable water bottle.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#103

As always, scale matters. Plastic will be superior to all the alternatives as long as it's a cheap waste by-product of oil refinement. Make alternatives economically competitive to basically free oil refinement by-products, and we're talking. EVs might help here, it seems.

Cheap to produce. Infinitely expensive in the long term.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#104

Earlier quoted context omitted.

The answer is neither. Human energy use that causes climate harms can be replaced with renewables. Fuel can be replaced with batteries. In the longer term, the sun is absolutely pouring out energy, which largely goes to waste, and a Dyson swarm capturing a small fraction of that would satisfy the energy needs of a much larger population.

These are not solving land impact of human. We must have fewer human or live in smal space like in Tokyo and others city like it. Most human no have desire to do this. Batery take resources like lithium more than we have. Maybe Dyson swarm eating star energy output cause climate change of its own, fewer energy reaching earth surface. There is always impacts that human create. We only can for truly mitigate climate ch…

> We only can for truly mitigate climate change with reducing human numbers.

Then you should welcome pandemic, genocide and war.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#105

Earlier quoted context omitted.

A lot of that plastic is shipped in from USA/EU.

Why would they buy plastic and throw it in the river? The US has plenty of landfill space, we aren't paying to ship plastic to Asia.

Bulk shipping to asia in particular is very cheap due to the volume of empty containers going in that direction. Not sure about other places.

Countries that recycle plastic have people pick out the good bits cheaply in hellish facilities, profit off selling the high grade recycling, the rest is "waste waste" to be gotten rid of somehow. Dumping it in the ocean is quite cheap.

The sorted plastic used to be a thing that you could mix with virgin plastic to get a cheaper product.

Since China's waste import bans, I believe it's actually more expensive than virgin plastic, partly because it costs more to produce now and partly because demand is driven by manufacturers who want to have a certain % recycled plastic in their product for marketing reasons.

The higher price incentivises other countries to import and process mixed plastic waste instead. They of course will also have to find a way to get rid of the not-useful portions of mixed plastic waste.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#106

>plant-based What they're based from isn't the problem, it's chemicals added to the base, such as chlorine compounds, that is the problem.

Please say more. My efforts to buy least processed cotton and wood pulp products have been largely unsuccessful. I don't need my toilet paper or t-shirts to be white.

For some reason, products made of minimally treated hemp or linen are more widely available.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#107

Earlier quoted context omitted.

Why would they buy plastic and throw it in the river? The US has plenty of landfill space, we aren't paying to ship plastic to Asia.

Bulk shipping to asia in particular is very cheap due to the volume of empty containers going in that direction. Not sure about other places. Countries that recycle plastic have people pick out the good bits cheaply in hellish facilities, profit off selling the high grade recycling, the rest is "waste waste" to be gotten rid of somehow. Dumping it in the ocean is quite cheap. The sorted plastic used to be a thing tha…

In the US, dumping stuff in the nearest landfill is pretty likely to be cheaper than dumping it in the ocean. Especially if the landfill is operating the recycling sort (the case here and many other smaller counties).

(This addresses your second paragraph; if they are selling the high grade and putting the rest in the landfill...)

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#108
post #92
post #38

Earlier quoted context omitted.

If by sent back you mean crushed then yeah sure bottles are reused. Oregon for example breaks the bottles when you return them to prevent fraud.

That's horrible, if true. Do you have a source for that? A quick Google search didn't get me anywhere. At least here in Austria the glass bottles are actually cleaned and re-used.

There isn't really any systematic reuse of glass bottles in the U.S. The only such thing I've encountered is some very niche arrangements between boutique dairy companies and boutique grocery stores, where you can return your $10 quart bottle of milk for the bottle to be reused.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#109
post #71

Earlier quoted context omitted.

I remember a time when everything was paper bags. Groceries and retailers went with plastic because it was cheaper. But with plastic there was a hidden cost. Now we're told we must pay a premium for recyclable plastic. Personally I'd rather pay a premium for paper because it's made from a renewable resource. Plus paper will decompose within two months in nature. The only drawback I can find is that paper bags take mo…

Also not everything can be paper. A coffee cup can never be fully paper, it needs a plastic lining and can thus never be recyclable. Not without it being extremely crappy. No food item can be enclosed in a fully paper enclosure and expected to have a shelf life. And for all the Portlanders saving a plastic bag there's a Texan buying all their drinking water as pallets of disposable single use plastic bottles. I think…

> Also not everything can be paper. A coffee cup can never be fully paper, it needs a plastic lining and can thus never be recyclable

There are bioplatic liners for paper coffee cups that allow them to be fully compostable, though. I have sitting next to me one made from the World Centric brand that uses the "Ingeo PLA" for the liner, and I compost these cups in my backyard. I only use them when it's inconvenient to not use a regular mug.

Re: New plant-based plastics can be chemically recycled with near-perfect efficiency

#110

Earlier quoted context omitted.

That is a good point, maybe something like one-child policy better serve this need. Or possibly we must consider which is worse for animals, damage from climate change or damage from endocrine disruptor.

> one-child policy better serve this need Over my cold dead body [and I won't go without a fight.].

This more extreme usonian gun and freedom idea. If government say you have only one child you hav xr15 rifle not help. you people no can be trust with guns, ability to have as many children as wanted, others. you try use them to continue kill planet. you no have freedom to keep breeding kill other country with climate change. US having more children is externality it not pay. the US days of telling world around and doing what desire is over.
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