Live data from Hacker News

Plastic-eating enzyme could eliminate billions of tons of landfill waste

news.utexas.edu

191–200 of 294 posts

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#191
post #147

Earlier quoted context omitted.

I think the main problem is that the average Joe/Jane confuses all types of pollution as equally bad. The real, most imminent threat is really CO2. That's what we have to spend the most money/energy on, because it could have absolutely catastrophic consequences in the next few decades. Plastic in a landfill is just... Stuck there. It's unnatural, sure, but it's not immensely harmful, not nearly on the same scale as C…

The real threat is the nearly 1 trillion tons of toxic waste we're racking up PER YEAR. It's the most lethal stuff this planet has ever encountered. If the CO2 levels spike, life on the planet (including many or maybe even most humans) will survive. If you look at historic levels, they were hundreds of times higher and the planet was the greenest it has ever been. If/when that toxic waste leaks out and starts killing…

The area around Chernobyl is very green and many animals live there. Things survive..

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#192
post #99

Earlier quoted context omitted.

Quoted post unavailable.

Nuclear fuel must first be mined, correct? That's not renewable and could offset the benefits somewhat. That said I imagine it may be better as a base load than dirty coal.

> That's not renewable and could offset the benefits somewhat

I don't think you realise the VAST amount of energy density in one 1kg of coal vs 1 kg nuclear fuel. "Somewhat" is not nearly the correct comparison !

"8 kWh of heat (energy) from 1kg of coal vs 24,000,000 kWh from 1 kg of uranium-235" [0]

[0] https://www.euronuclear.org/glossary/fuel-comparison/

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#193
post #160

Earlier quoted context omitted.

Garbage is also a problem in the environment like plastics in oceans, but the problem is not enough (well run and used) land fills (in Asia) not too many!

50% of the plastic problem in the ocean is discarded fishing nets (generally accepted to be discarded from Asian fishing vessels).

Source?

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#194

Earlier quoted context omitted.

Landfills are not a miracle technology. They exist already and are technologically sound. It’d be way more of a miracle if we somehow managed to greatly reduce waste.

How sustainable are landfills? There's limited land for farming, residences, manufacturing, and everything else we use it for. And trucking trash to deserts to landfill there isn't carbon neutral either. Trash also doesn't breakdown as quickly in covered landfills (for better or worse depending on what one dumps).

Given the yield of useful content vs. rock in mining, I suspect the more limiting factor is space for all the mining, not space for disposal of the 0.1% metal etc yield for making industrial goods.

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#195

Earlier quoted context omitted.

You’d be surprised by the number of things that need to be constantly monitored. Building structures, power plants, roads, dams, mass transit, etc. basically everything.

Dams break and wreck havoc on ecosystems, the US has had it's fair share of coal mine sludge disasters. Even countries with strict environmental agencies and long history of mining have accidents.

So what's your solution? Stop building dams and decommission the ones that have been built? Humans attempt to create order. The universe naturally wants to increase disorder. It's natural that anything we create will need to be monitored.

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#196

Earlier quoted context omitted.

Nuclear fuel must first be mined, correct? That's not renewable and could offset the benefits somewhat. That said I imagine it may be better as a base load than dirty coal.

> That's not renewable and could offset the benefits somewhat I don't think you realise the VAST amount of energy density in one 1kg of coal vs 1 kg nuclear fuel. "Somewhat" is not nearly the correct comparison ! "8 kWh of heat (energy) from 1kg of coal vs 24,000,000 kWh from 1 kg of uranium-235" [0] [0] https://www.euronuclear.org/glossary/fuel-comparison/

Does that mean 1 tonne is enough to power the world for a year?

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#197
post #135

> Recycling is the most obvious way to cut down on plastic waste. I would think that the most obvious solution is to not use a material that lasts thousands of years for disposable packaging that’s only needed for a few months. Seems like these types of “revolutionary” new processes to make recycling finally work come out every year, and yet nothing changes. I can’t imagine this will be any different. As long as it’s…

Regulation is the way

No post body was provided.

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#198

Earlier quoted context omitted.

I think the main problem is that the average Joe/Jane confuses all types of pollution as equally bad. The real, most imminent threat is really CO2. That's what we have to spend the most money/energy on, because it could have absolutely catastrophic consequences in the next few decades. Plastic in a landfill is just... Stuck there. It's unnatural, sure, but it's not immensely harmful, not nearly on the same scale as C…

Sperm counts have been dropping for a long time (50%-60% over the past 50 years) without stopping, and plasticizers are the suspected culprit. It's incredible how many people need to do IVF now. I would argue that might be the most imminent threat but nobody seems to care.

People should have fewer kids anyway, I see this as an absolute win.

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#199

Earlier quoted context omitted.

Landfills are not a miracle technology. They exist already and are technologically sound. It’d be way more of a miracle if we somehow managed to greatly reduce waste.

People love to "what if" landfills. Best to not bother arguing with them. We have tons of problems with emissions, plastics pollution, industrial dumping. However landfills ain't one of them, but people won't give up. I've learned to not bother discussing anything with them if they don't know a few basics of how modern landfills are run (at least in western nations).

Landfills were demonized for a long time because they were easy targets.

Re: Plastic-eating enzyme could eliminate billions of tons of landfill waste

#200

Earlier quoted context omitted.

Sperm counts have been dropping for a long time (50%-60% over the past 50 years) without stopping, and plasticizers are the suspected culprit. It's incredible how many people need to do IVF now. I would argue that might be the most imminent threat but nobody seems to care.

People should have fewer kids anyway, I see this as an absolute win.

No post body was provided.
Post reply on HN