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That scheme didn't last very long, and they've changed a couple times since then. For a while it was similar packs, but filled with water, and the pack said to
by delecti 8y ago
That scheme didn't last very long, and they've changed a couple times since then. For a while it was similar packs, but filled with water, and the pack said to just pour it down the drain. And now they send packs of dry ice along with frozen food, and frozen bottles of water along with refrigerated food. The dry ice just sublimates away (and the cardboard it's in is recyclable), and the bottled water is at least slightly valuable as a product.
- vram22 8y ago>The dry ice just sublimates away Dry ice is the solid form of carbon dioxide, though. So when it sublimates, the CO2 will go into the atmosphere.
- nostrademons 8y agoWhere do you think the CO2 came from in the first place?
- vram22 8y agoFrom turtles (all the way down/up)? Heh. Jokes apart: https://en.wikipedia.org/wiki/Dry_ice#Manufacture https://en.wikipedia.org/wiki/Dry_ice#Manufacture
- gus_massa 8y agoThe main point is that nobody produces (at industrial scale) CO2 just to make dry ice. It's a byproduct of other process that is normally released to the atmosphere, but in this case the release is delayed for a few days.
- NeedMoreTea 8y agoUsually from ammonia production, so from natural gas and water.
- vram22 8y agoFound this use of it interesting (from the Wikipedia article about dry ice): >Plumbers use equipment that forces pressurised liquid CO2 into a jacket around a pipe. The dry ice formed causes the water to freeze, forming an ice plug, allowing them to perform repairs without turning off the water mains. This technique can be used on pipes up to 4 inches (100 mm) in diameter.[23]
- delecti 8y agoIt's not like it's much CO2 though. Nearly as much is released by the truck driving to my house.
- dajohnson89 8y agoi love getting the frozen bottles of water with my amazon fresh purchase.