How Climeworks and Carbfix capture and permanently store CO2

1

Fan draws air into a collector

box and through a filter

CO2 in air

Fan

CO2-free

air

Highly selective filter becomes saturated with CO2

2

When the filter is full the box is closed

and the filter heated to 100C

Heating causes the filter to give up its store of CO2

3

Captured CO2 is mixed

with water and pumped

deep under ground

Water

Basalt rock

Mixture turns to stone in about two years

1

2

Fan draws air into a collector

box and through a filter

When the filter is full, the box is closed

and the filter heated to 100C

Heating causes the filter to give up its store of CO2

CO2 in air

Fan

CO2-free

air

3

Captured CO2 is mixed

with water and pumped

deep under ground

Water

Highly selective filter becomes saturated with CO2

Basalt rock

Mixture turns to stone in about two years