Live data from Hacker News

Why Isn't Landfill Mining More Popular?

gizmodo.com

31–40 of 119 posts

Re: Why Isn't Landfill Mining More Popular?

#31
post #14

Earlier quoted context omitted.

The technology of landfills has massively improved over the years. It's not the old pile of garbage covered in birds forever; they turn them into parks and whatnot. It's probably worth looking up, because there's some cool scientific advancements behind it. I'm pulling this next sentence completely out of my ass, but I also imagine it would be convenient, once we develop bacteria to break this stuff down in an enviro…

I'm super excited for all the plastic in the world and all the devices that we use everyday to rot because we developed a bacteria that eats it and now your iPhone internals have an infection and your phone just disintegrates and the steering wheel falls off your car

Ringworld. That's the basic idea of the underlying society wide failure in that book.

Re: Why Isn't Landfill Mining More Popular?

#32
post #14

Earlier quoted context omitted.

The technology of landfills has massively improved over the years. It's not the old pile of garbage covered in birds forever; they turn them into parks and whatnot. It's probably worth looking up, because there's some cool scientific advancements behind it. I'm pulling this next sentence completely out of my ass, but I also imagine it would be convenient, once we develop bacteria to break this stuff down in an enviro…

> once we develop bacteria to break this stuff down in an environmentally friendly way Sounds as mythical as plastic recycling to me to be honest.

I'm mostly fantasizing about it because I've read about plastic-eating bacteria and radiation-powered bacteria, so it seems possible to do, like, anything. But yeah I fully admit it's probably mythical to some degree.

Re: Why Isn't Landfill Mining More Popular?

#33
post #26

Some years ago, Switzerland completely stopped using landfills. All garbage is incinerated. The resulting slag is then processed to reclaim nearly all metals as well as some other important elements. Of course, the burning creates CO2. However, you don't have to mine and refine metal ores, and the incinerators also generate electricity and district heating. So the ecological balance is actually pretty good. As a fina…

>you don't have literal square miles of landfills that occupy land Land area is a non-issue. Google says Switzerland produces "80 to 90 million tonnes" of garbage per year. Assuming that garbage has the same density of water, and a landfill is 10 meters deep, a 1 sq mi landfill will last 287 years. Moreover, Wikipedia says Switzerland has 15,940 square miles of land, so that will only take up 0.006% of the country's…

There is no evidence that those mechanisms will last longer than the pollution from the landfill. Nor should we base plans on "nothing bad will definitely happen"

Re: Why Isn't Landfill Mining More Popular?

#34

Earlier quoted context omitted.

The US has way too much space for incineration to become more cost-effective than just dumping it in a giant hole in the ground.

Could be true for small cities. But try to find an empty space suitable for landfill near NYC.

Up until 2001, it was inside NYC.

Re: Why Isn't Landfill Mining More Popular?

#35
post #14

Earlier quoted context omitted.

The technology of landfills has massively improved over the years. It's not the old pile of garbage covered in birds forever; they turn them into parks and whatnot. It's probably worth looking up, because there's some cool scientific advancements behind it. I'm pulling this next sentence completely out of my ass, but I also imagine it would be convenient, once we develop bacteria to break this stuff down in an enviro…

> once we develop bacteria to break this stuff down in an environmentally friendly way Sounds as mythical as plastic recycling to me to be honest.

I was once told by a chemist that bacteria breaking down plastic is not an unthinkable thing. He said it's chemically quite similar to something existing (fat?), so once bacteria stop ignoring plastic due to details in their chemical fingerprint, they can break it down. They would be able to do so already if not for said details.

Hope I remember correctly.

Re: Why Isn't Landfill Mining More Popular?

#36
There's probably millions of tons of unused copper wire formerly used for telephone land lines nailed to poles unused. I wonder when we're going to start taking that down instead of despoiling natural wonders like the proposed Pebble Mine in Alaska

https://en.wikipedia.org/wiki/Pebble_Mine

Re: Why Isn't Landfill Mining More Popular?

#37

Earlier quoted context omitted.

The US has way too much space for incineration to become more cost-effective than just dumping it in a giant hole in the ground.

Until you go to your local landfill and see the massive fuming hellscape spanning thousands of acres with mountains of garbage just laying there and mentally extrapolate how it will look even 10 more years from now.

It can look like this

https://freshkillspark.org/

Re: Why Isn't Landfill Mining More Popular?

#38

Earlier quoted context omitted.

I'm super excited for all the plastic in the world and all the devices that we use everyday to rot because we developed a bacteria that eats it and now your iPhone internals have an infection and your phone just disintegrates and the steering wheel falls off your car

Would you do me a kindness and let me know later if sarcasm gets through people who can’t care about the environment a bit more than their own consumption? I’ve tried reason but it never works.

Material security is the best predictor of environmentalist political priorities. Nothing else even comes close.

Re: Why Isn't Landfill Mining More Popular?

#39

Some years ago, Switzerland completely stopped using landfills. All garbage is incinerated. The resulting slag is then processed to reclaim nearly all metals as well as some other important elements. Of course, the burning creates CO2. However, you don't have to mine and refine metal ores, and the incinerators also generate electricity and district heating. So the ecological balance is actually pretty good. As a fina…

How come the slag is far less problematic? You didn’t describe where it goes. I also don’t see the “ecological balance” here. That usually refers to relationships among organisms in an ecosystem where one’s waste is another’s sustenance, but where does the generated CO2 go? Or did you mean a trade-off of pollution?

The OP did say that the slag was processed to remove everything that can be reused. I would imagine whatever is left over heads to a landfill, but at that point it is at least mostly bath water.

Re: Why Isn't Landfill Mining More Popular?

#40

Earlier quoted context omitted.

> once we develop bacteria to break this stuff down in an environmentally friendly way Sounds as mythical as plastic recycling to me to be honest.

Microorganisms are already evolving to consume plastics. https://www.wsl.ch/en/news/searching-for-plastic-gobblers-in...

Yeah, people have also gotten mealworms to eat Styrofoam. My concern is more that the plastics industry successfully pushed plastic recycling heavily with marketing so that growth of their products would continue, even as said recycling was just dumping the material in developing countries where it mostly ended up burned or in the ocean. There can be a huge, huge disconnect between technically possible and what happens in the real world.
Post reply on HN