Technology

59713 readers

5858 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

552

Desalination system could produce freshwater that is cheaper than tap water (news.mit.edu)

submitted 1 year ago by [email protected] to c/technology

161 comments fedilink hide all child comments

Engineers at MIT and in China are aiming to turn seawater into drinking water with a completely passive device that is inspired by the ocean, and powered by the sun.

In a paper appearing today in the journal Joule, the team outlines the design for a new solar desalination system that takes in saltwater and heats it with natural sunlight.

The researchers estimate that if the system is scaled up to the size of a small suitcase, it could produce about 4 to 6 liters of drinking water per hour and last several years before requiring replacement parts. At this scale and performance, the system could produce drinking water at a rate and price that is cheaper than tap water.

https://www.cell.com/joule/fulltext/S2542-4351(23)00360-4

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 7 points 1 year ago (1 children)

Yeah, that coastal community probably didn't need any fish.

[–] [email protected] 1 points 1 year ago (1 children)

Large coastal communities don't just go down to the local jetty and cast hooks into the water by the shore. Commercial fishing is done by large ships out in the ocean, far away from the cities.

You probably wouldn't want to fish near a city's sewer outflows anyway.

[–] [email protected] 1 points 1 year ago

Depends on what you mean by far away and what kind of fish you're talking about. Big fish like tuna are often caught far out at sea, but they're also caught by the same small boats that do charter fishing an hour or two out from the shore. There's plenty of inshore fishing that would be at risk, especially in bays where the salt would be less easily dispersed. I used to work at a fish market, and offhand I can think of multiple fishing industries that would be put at risk by carelessly dumping salt back in the ocean. The majority of shellfish, for example, is caught within sight of the beach. I don't know if it's still the case, but there used to be a ton of fishing done in Boston Harbor, and I've heard stories of crates of lobsters being opened only to find the lobsters carrying pieces of bodies dumped by the mob off the docks and into the harbor.