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Dry Water

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Re: Dry Water

#61

Post by semi-extrinsic »

rthomas6 wrote: post #47
semi-extrinsic wrote: post #32

Earlier quoted context omitted.

There's a lot of literature on this; Wikipedia has a decent starting point: https://en.wikipedia.org/wiki/Carbon_sequestration#Geologica... TL;DR: if you compress CO2 to above 73 bar, it becomes supercritical fluid, which has a density almost like water and which does not mix with water. If we inject this fluid into underground saline aquifers, we can trap it indefinitely. Basically exactly the reverse of producing o…

Could we combine this with some kind of carbon capturing process to reduce existing CO2 in the atmosphere?

Long term, yes, that's exactly the plan. Short-term, it's going to be CO2 captured from large emission sites - powerplants, chemical processing industry, cement and steel factories etc.

Just because the CO2 concentration is so much higher in exhaust/flue gas, 10-40% versus 0.04% in the atmosphere, it's much more cost effective in the next 50-ish years.

Re: Dry Water

#62

Post by smsm42 »

hcknwscommenter wrote: post #44
tylerchilds wrote: post #13

The patent getting snatched up by cosmetics and then re-discovered almost 50 years later makes me wonder how many cool advancements have been lost to industries that couldn't find any value from them.

Your comment implies that innovation was impeded in other industries because cosmetics "snatched up" the patents. I'm not so sure. Typically, academic and institutional researches DNGA* about patents. As a nascent technology shows commercialization potential, there is incentive for the patent holders to find some way of monetizing. I would imagine (but admittedly do not know) that a cosmetics patent holder would have…

You are assuming the original patent holder still exists and holds the patent. And it's not held by some patent troll aggregator whose sole purpose in life is milking their large patent portfolio and who has no problem refusing to grant license on any of the individual patents if the applicant can't pay whatever they want, and have no incentive to undermine their portfolio profitability and their market worth by offering these licenses too cheap.

Re: Dry Water

#63

Post by astura »

spydum wrote: post #54
Splines wrote: post #39

Earlier quoted context omitted.

The only video I could find of the process: https://www.youtube.com/watch?v=bVAPUxSH_6Q I'd like to see someone interact with it - is it possible to get "wet" from dry water? Can you get the water back out?

Imagine you could press it through a filter of appropriate size to block the silicate but permit the water ?

Maybe a centrifuge might separate the two?

Re: Dry Water

#64

Post by s0rce »

user5994461 wrote: post #43

It doesn't say how to get the water back from the powder.

You could distill it off just like you distill normal water. Lowering the surface energy might also be a possibility. Might be able to introduce a powdered surfactant and then mix a bunch. Should then wet everything and you can sediment out the solids.

Re: Dry Water

#65

Post by vole »

tibbon wrote: post #20
tylerchilds wrote: post #13

The patent getting snatched up by cosmetics and then re-discovered almost 50 years later makes me wonder how many cool advancements have been lost to industries that couldn't find any value from them.

MDMA was originally patented 1912/1914 by Merck, but wasn't really applied for human usage until Dr Shulgin was working with it over 50 years later.

A similar thing occured with LSD. It was only manufactured by Sandoz until the patents expired and the quantities manufactured exploded.

Re: Dry Water

#66

Post by Timmah »

rthomas6 wrote: post #47
semi-extrinsic wrote: post #32

Earlier quoted context omitted.

There's a lot of literature on this; Wikipedia has a decent starting point: https://en.wikipedia.org/wiki/Carbon_sequestration#Geologica... TL;DR: if you compress CO2 to above 73 bar, it becomes supercritical fluid, which has a density almost like water and which does not mix with water. If we inject this fluid into underground saline aquifers, we can trap it indefinitely. Basically exactly the reverse of producing o…

Could we combine this with some kind of carbon capturing process to reduce existing CO2 in the atmosphere?

In another thread today it was pointed out that humans produce 50 gigatonnes of CO2 per year. We have to start somewhere, but grabbing a few tons at a time may not out much of a dent in the problem.

Re: Dry Water

#67

Post by smsm42 »

jamestimmins wrote: post #42

"It can be used as a medium for volatile compounds, as materials stored within the dry water can be reduced to powder and stabilized – reducing not only the volatility of the substance, but also its weight for transport." Anybody know how it's possible that adding an additional substance to a chemical compound could decrease it's weight? Or does it just mean that less volatility means it can be transported in lighter…

I understood it as less total weight it requires, as instead of thick hermetically sealed tank needed to hold a volatile gas one could (probably) use a lighter container for less volatile substances. This of course assumes extracting the volatile substance back requires some procedure that can not happen by accident in transport.

Re: Dry Water

#68

Post by s0rce »

maxander wrote: post #26

I wonder if this sort of silica coating could be an alternative to lipid-wall cells for silicate-based extraterrestrial life.

I assume you mean cell membranes (cell walls are in found in plants, fungi and bacteria and made from polysacharides). However, it seems like an impermeable wall is less the issue than trans-membrane structures which facilitate selective transport of different species (ions, molecules, etc).

Re: Dry Water

#69

Post by s0rce »

thedirt0115 wrote: post #53

Ok, stupid question time... can you turn it back into regular water, and how? "Just add water?"

I'm not sure whats normally done but I answered this above. You could distill it like normal water.
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