French company extracts precious metals from waste water

The video tutorial explains a method for extracting metals from water using pellets and coordination chemistry. This technology is highly efficient, leaving only a microgram of metal per liter of water, comparable to a sugar lump in an Olympic-sized pool. It can extract toxic, radioactive, and precious metals, including gold, silver, and platinum.

What technique is used to make metals stick to pellets in water?

• Magnetic separation

• Coordination chemistry

• Filtration

• Electroplating

How efficient is the technology in terms of metal residue left in water?

• One kilogram per liter

• One gram per liter

• One microgram per liter

• One milligram per liter

What is the comparison used to describe the amount of metal left in water?

• A pebble in a pond

• A grain of rice in a bowl

• A sugar lump in an Olympic-sized swimming pool

• A drop of ink in a bucket

Which of the following metals can be extracted using this technology?

• Aluminum

• Silver

• Copper

• Iron

Besides precious metals, what other types of metals can be extracted?

• Inert gases

• Organic compounds

• Toxic and radioactive metals

• Non-metallic elements