Combustion aerosols

Question 1

What combustion aerosol has the largest impact on climate?

Answer 1

Black carbon since this heats up the atmosphere. Positive radiative forcing.

Question 2

What is needed for complete combustion?

Answer 2

• Sufficient oxygen
• High temperature >850 degrees
• Long residence time
• good turbulence

Question 3

Products of complete combustion

Answer 3

CO2, H20 and SO2

Question 4

What is black carbon?

Answer 4

Light absorbing carbonaceous matter.

Question 5

Equivalent black carbon

Answer 5

Measurement of black carbon from optical absorption methods.

Question 6

Elemental carbon

Answer 6

Measurement of black carbon when the carbon content is measured.

Question 7

Refractory black carbon

Answer 7

Measurement of black carbon derived from incandescence methods.

Question 8

Soot

Answer 8

carbonaceous matter from incomplete combustion.

Question 9

Removal of soot particles is done by…

Answer 9

oxidation

Question 10

High temperature and low oxygen content gives…

Answer 10

soot. incomplete combustion

Question 11

High temperature and high oxygen content gives…

Answer 11

ash. Complete combustion

Question 12

Low temperature gives…

Answer 12

organic carbon. incomplete combustion

Question 13

Climate effect of ash

Answer 13

includes alkali salts which have a cooling effect