Harvesting uranium from seawater

The video discusses the presence of uranium in the Earth's oceans, highlighting its concentration and total amount. Traditional methods of uranium extraction involve using ligands braided into plastic fiber mats submerged in the sea. A new sustainable method using chitin from crab and shrimp shells offers a biodegradable alternative for uranium extraction.

What is the concentration of uranium in seawater?

• 4.5 milligrams per ton

• 3.3 milligrams per ton

• 6.3 milligrams per ton

• 5.5 milligrams per ton

How does the total amount of dissolved uranium in the oceans compare to global production in 2011?

• 8,200,000 times

• 82,000 times

• 8,200 times

• 820,000 times

What material is traditionally used to trap uranal ions?

• Glass fibers

• Chitin

• Plastic fiber mats

• Metal sheets

At what depth are the plastic fiber mats submerged in the sea?

• 200 meters

• 100 meters

• 250 meters

• 150 meters

What natural material is used in the new method for capturing uranal ions?

• Wool

• Chitin

• Cotton

• Silk