HarveyH55 wrote:But, wouldn't it be cool if bacteria could change lead into gold?
I see you've met my bacterium alchemist. He's pictured here with one of my gold molecules.
IBdaMann wrote:HarveyH55 wrote:But, wouldn't it be cool if bacteria could change lead into gold?
It's called bio heap leaching. Extracting gold deposits from ore.https://www.911metallurgist.com/blog/wp-content/uploads/2015/10/BioHeapLeaching.pdf
I don't think the ores you get lead out of, are usually the same as the ores you get gold out of.
Although the ore called Galena has lead and silver deposits in it.
Edited on 21-08-2023 04:27
Spongy Iris wrote:I don't think the ores you get lead out of, are usually the same as the ores you get gold out of.
Gold is very valuable. Lead is not. An alchemist is a mage of legend (i.e. fictional) who could turn lead into gold. The idea of turning things into gold has always been a popular theme in stories, leading to classics such as Rumpelstiltskin and King Midas.
There are no alchemists, and there certainly aren't any bacteria alchemists, which is Harvey's original point, and the reason I made the meme ... well, that and the opportunity to put my gold molecule in Swan's face. It's fun messing with swan.
|But, where did the arsenic come into all this? Don't ever remember any reference to methane, other than rantings here. Don't figure it's very healthy for bacteria. Think arsenic was used as rat poison, probably to kill many other pests as well. Though, can't image anyone too concerned about rats in the landfill. Though, polar bears in the landfill could be a problem. Obviously not picky eaters. Just really sad to see those photo-ops, and blamed on all their ice has melted. Wouldn't think ice was nutritious.|
|RE: at the risk of repeating myself21-08-2023 23:28|
|Im a BM★★★☆☆
The arsenic was already there in the soil before anybody drilled a gas well.
It was harmless - bound up mainly as arsenate attached to the surface of iron, manganese, and aluminum (hydr)oxide clay minerals.
The methane was new to the system, and it changed the state of the arsenic.
The methane, leaking from the old gas well, never interacted directly with arsenic. Methane was used by bacteria which oxidized it to get energy. Unfortunately, the best available oxidants were attached to arsenic, as Fe(III) or Mn(IV), or were the arsenic itself, as arsenate or arsenic(V).
The bacteria released the arsenic into solution because methane was available in the absence of oxygen.
Introducing oxygen into the system would reverse the process to take the arsenic out of solution and put the arsenic back into the solid material where it cannot enter ground water.
This is straightforward biogeochemistry, but a person has to study at least a little bit to understand it.
Im a BM wrote:HarveyH55 wrote:
Arsenic is a very reactive metal though, and quickly find something else to bond with. The amount of arsenic never increases, it's just which compounds are formed. It'll still find it's way into water.
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