Graphene offers possibility of low-cost desalination

Graphene, a material 200,000 times smaller than a strand of hair, is an atomic-scale honeycomb lattice made of carbon atoms. Engineers at MIT have enhanced its filtration capabilities by introducing small pores, allowing it to filter sodium and chlorine ions. Graphene is significantly thinner and more efficient than traditional reverse osmosis membranes, requiring less power and working faster.

What is the primary reason for needing large amounts of power in the context discussed?

• To generate extremely high pressure

• To cool down the system

• To increase the speed of the process

• To reduce the size of the equipment

How does the size of Graphene compare to a strand of hair?

• It is twice as large

• It is the same size

• It is 200,000 times smaller

• It is 200,000 times larger

What is the structure of Graphene?

• A cubic lattice

• A hexagonal lattice

• A honeycomb lattice

• A spherical lattice

What innovation did MIT engineers introduce to Graphene?

• They changed its color

• They increased its weight

• They added small pores

• They made it thicker

Compared to reverse osmosis membranes, how does Graphene perform?

• It works three times faster and is thinner

• It is 1,000 times thicker

• It requires more power

• It is slower and less efficient