Would it be easier to collect CO2 at volcano opening to reduce greenhouse gas emission?

[Etienne]

We need to reduce CO2 from the atmosphere.
One way is to reduce emission at every exhaust of every car and truck, but would it be simpler to collect the same amount of CO2 at the opening/mouth of subduction volcanoes?
It would obviously involve very big machinery, it would have to be payed by the people polluting the most, but it still would probably more practical, isn't it?
If I correctly understand, only some volcanoes (subduction?) emit large quantities of CO2, because the tectonic plate which goes under need to contains large quantities of CO and so should have been a sea floor during a very long time.

 

[Roj5]

One way is to reduce emission at every exhaust of every car and truck, but would it be simpler to collect the same amount of CO2 at the opening/mouth of subduction volcanoes?

From the following link "several individual U.S. states emit more carbon dioxide in a year than all the volcanoes on the planet combined do. ".

"volcanoes (purple line) produce less than 1 billion metric tons annually. " - From the second link below "There are about 1,350 potentially active volcanoes worldwide, aside from the continuous belts of volcanoes on the ocean floor at spreading centers like the Mid-Atlantic Ridge. About 500 of those 1,350 volcanoes have erupted in historical time. " - If I have calculations right, the average volcano produces the same CO2 as 50k cars driving 350 miles.

Which emits more carbon dioxide: volcanoes or human activities?

Human activities emit 60 or more times the amount of carbon dioxide released by volcanoes each year.

www.climate.gov

How many active volcanoes are there on Earth? | U.S. Geological Survey

There are about 1,350 potentially active volcanoes worldwide, aside from the continuous belts of volcanoes on the ocean floor at spreading centers like the Mid-Atlantic Ridge. About 500 of those 1,350 volcanoes have erupted in historical time. Many of those are located along the Pacific Rim in...

www.usgs.gov