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> we can bury garbage in old landfill sites. How's that going to work? Landfills don't decompose. In fact many of them are treated not to, since people don't
by admax88q 11y ago
> we can bury garbage in old landfill sites.
How's that going to work? Landfills don't decompose. In fact many of them are treated not to, since people don't like the smell and they don't want toxic stuff getting in to the water table.
Landfills literally just sit there. Forever.
- jaderobbins1 11y agoSo eventually when the cost of finding/creating new materials makes recycling economically feasible we "mine" old landfills and use the materials. The landfill materials become the new raw material for manufacture.
- JoeAltmaier 11y ago...except that they distribute the material so thinly, its unlikely it'll ever be economical to mine. Even the 'original' mines e.g. copper, iron, need very high mineral densities to make them worthwhile. Landfills are orders of magnitude less dense.
- garfij 11y agoThere is more gold in a ton of garbage electronics than there is in a ton of gold ore. http://pubs.usgs.gov/fs/fs060-01/fs060-01.pdf http://pubs.usgs.gov/fs/fs060-01/fs060-01.pdf http://europa.eu/rapid/press-release_SPEECH-14-527_en.htm http://europa.eu/rapid/press-release_SPEECH-14-527_en.htm http://www.bbc.com/news/blogs-magazine-monitor-28802646 http://www.bbc.com/news/blogs-magazine-monitor-28802646
- JoeAltmaier 11y agoCool! If only electronics were concentrated somehow in a landfill, instead of thinly spread around.
- vectorjohn 11y agoWhat? Why would the material be distributed thinly? It's not like they rake it all over the desert. It's extremely concentrated.
- JoeAltmaier 11y agoConcentrated ore is essentially solid material of a single nature. Nothing resembling that occurs in landfills. Its a big pile of 'stuff' with pellets of interesting materials every few meters. That's many orders of magnitude too sparse to be worth mechanically mining.
- vectorjohn 11y agoOf course landfills decompose, that's an absurd assertion. If they're treated not to decompose, then they were put in the wrong place obviously. Clearly some things in the landfill don't decompose, but like others have pointed out, they will someday become profitable to mine if they're full of so much concentrated stuff.
- JoeAltmaier 11y agoRead up on landfills. There's little or no effort to make them decompose. Impermeable soil layers are deposited to expressly prevent mixing and mulching, since that would allow contaminated water to travel from layer to layer.