logoalt Hacker News

daneel_w • today at 1:11 PM • 5 replies • view on HN

Can this particular weed be eaten as-is, by human or animal, or is it known to e.g. be toxic or full of waste? Because it seems to me rather beneficial that the ocean washes it up on the shoreline ready for pick-up.


Replies

RetroTechie • today at 3:05 PM

https://en.wikipedia.org/wiki/Sargassum#Sustainable_uses

Find a way to lower salt & arsenic content, and it could be an excellent fertilizer.

erkt • today at 2:19 PM

Currently no good use for it other than as a Biochar. Come up with a solution and save billions for the tourism industry.

➕ show 1 reply
alexpotato • today at 3:43 PM

There was a story about a guy using the seaweed as a binder for concrete.

More general details here: https://materialdistrict.com/article/from-algae-to-architect...

close04 • today at 1:15 PM

If I remember correctly this seaweed accumulates arsenic. They tried to use it as fertilizer before discovering this, and made the crop and the land unusable. Even burning it is dangerous.

This is a losing battle if all they do is shovel or fish it faster. The conditions in the environment are such that they favor the seaweed. Treat the cause not the effect, or else they’ll have to employ some very fancy genetic engineering to halt it.

➕ show 1 reply