Friday, September 09, 2011

How to Tow a Building-Sized Iceberg

How to Tow a Building-Sized Iceberg, article.

French engineer Georges Mougin has a big idea. He wants to go to Antarctica, tie a big rope around a six-million-ton iceberg, drag it back to Africa and melt it into fresh, drinkable water.

They don't talk about whether they'll try to cover it to reduce the melting. I'd have thought that would be an important question.

How about pumping seawater into a desert and let the sand filter out the salt, then pump up drinking water from below? Wonder if that could work. Would probably be a long line, and maybe the sand wouldn't get out all the salt. Perhaps too there'd be too big a loss of water over the process. And probably the energy expense would be huge, as well as the environmental impact.
This article says that salt is very hard to separate from water, so maybe sand simply wouldn't do the trick. Well, I was just spitballing.

Trying googling for this, I found this small-scale, but smart method.


Anonymous said...

Salt is dissolved in water. The Na and Cl ions are not filterable.

Eolake Stobblehouse said...

Ah, there you go then. Thanks.
Maybe the "filters" I saw mentioned use reverse osmosis then.

Tommy said...

Somehow this seems like a bad idea. I mean, our ice caps are melting due to global warming and now they want to tow the ice away and melt it on purpose.

I say, leave it alone already.