New water treatment method is based on a sea creature

The video discusses the limitations of conventional coagulants like aluminum sulfate in removing small dissolved contaminants from water. Researchers from Yale and Peking University developed a nanocoagulant inspired by actinia to address this issue. The nanocoagulant features a core-shell structure that turns inside out in water, effectively trapping larger particles with its shell and capturing smaller dissolved ones with its core.

What is a limitation of conventional coagulants like aluminum sulfate in water treatment?

• They cause water to become acidic.

• They cannot remove large particles.

• They are too expensive to use.

• They are unable to capture smaller dissolved contaminants.

Which universities collaborated to develop a new type of coagulant?

• Cambridge and Tokyo University

• Stanford and Oxford

• Yale and Peking University

• Harvard and MIT

What inspired the design of the new nanocoagulant?

• The movement of seaweed

• The structure of a sponge

• The behavior of jellyfish

• The actinia

How does the core-shell structure of the nanocoagulant function in water?

• Both the core and shell capture only large particles.

• The shell traps larger particles, while the core captures smaller dissolved ones.

• The structure does not change in water.

• The core traps larger particles, while the shell captures smaller ones.

What happens to the nanocoagulant's structure when it is in water?

• It turns inside out.

• It dissolves completely.

• It becomes rigid.

• It changes color.