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Environment & Energy

sl8

(16,644 posts)

5. Note that the low 1.45 kg CO2 figure is predicated on using recycled aluminum.

Reply to Caribbeans (Original post)

Wed Jun 4, 2025, 07:03 PM

Jun 4

The CO2 figures when you account for aluminum refined from bauxite are about 70x higher.

Aluminum refining is extremely energy intensive, which is why producers of metallic aluminum products currently are happy to get all the recycled aluminum they can .

If this hydrogen production process was adopted on a wide scale, refining aluminum from ore would have to increase greatly, one way or another, releasing large amounts of CO2. There's only so much recycled aluminum to go around.

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NickB79

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Highlight:

MIT Study shows making hydrogen with soda cans and seawater is scalable and sustainable [View all] Caribbeans Jun 3 OP

byproduct aluminum oxide rampartd Jun 3 #1

Where do you see that? sl8 Jun 4 #4

electric is a boondoggle. hydrogen makes more sense. pansypoo53219 Jun 3 #2

Shame on MIT for announcing a perpetual motion machine driven, like all hydrogen bullshit, by fossil fuels. NNadir Jun 4 #3

Note that the low 1.45 kg CO2 figure is predicated on using recycled aluminum. sl8 Jun 4 #5