Why can/do we not capture the released CO2 directly at the source?

Question

So why can/do we not capture the CO2 directly where it is released? For example for cars directly at the exhaust? Or for coal power plants at the chillen? Wouldn‘t it be much more effective to capture the CO2 there instead of trying to filter it out of the atmosphere?

In: 3

Answer 1

Fossil fuel power plants work using a chemical reaction between hydrocarbons and oxygen to produce energy. In order to fix the carbon produced back into another form than CO2 would invariably require more energy than the power plant produces rendering the process pointless.