Metal emissions from domestic solid fuel

Metals are present in small quantities in coal and in even smaller quantities in wood. They generally vaporise upon burning and condense onto emitted particles. Emission concentrations and factors are:






Metal
Emission target µg/m3
Bituminous coal
Average Emission
concentration   µg/m3

Bituminous coal
 Emission Factor (dry ash
free)   mg per kg fuel burnt

Bituminous coal
 Emission Factor (dry ash
free)   mg per kg fuel burnt

Hardwood
 Emission Factor (dry ash
free)   mg per kg fuel burnt

Australian Wood
 Emission Factor (dry ash
free)   mg per kg fuel burnt


Arsenic
0.006
140
1.50
0.47
0.03
0.03
Cadmium
0.005
3
0.03
0.03
0.08
1.0
Cobalt

32
0.35



Chromium

16
0.18
0.90
0.90
0.02
Copper

560
6.20
0.21
0.10

Mercury
0.05
46
0.51
0.11
0.03
0.07
Manganese

150
1.60
0.38
0.64

Nickel
0.02
110
1.20
0.46
0.98

Lead
0.25
490
5.40
2.85
0.91
0.10
Antimony

47
0.52



Tin

14
0.16



Thallium

10
0.10



Vanadium

57
0.63
0.11
0.03

Selenium

50
0.55
0.42
0.09

Zinc

590
6.50
2.49
1.25

Total

2300
25.0
8.43
5.03


UK heavy metal emissions from domestic solid fuel in 1999 (tonnes).

Fuel
As
Cd
Cr
Cu
Hg
Ni
Pb
Se
V
Zn
coal (tonnes)
5.08
0.15
3.06
2.27
0.43
16.01
11.03
3.41
5.73
5.53
coal %
10.8%
2.3%
4.6%
3.8%
5.1%
8.5%
2.0%
7.6%
1.5%
1.2%
smokeless solid fuel (tonnes)
2.93
0.07
1.02
1.31
0.17 3.98
4.19
0.85
3.81
0.85
smokeless solid fuel %
6.3%
1.0%
1.5%
2.2%
2.0%
2.1%
0.8%
1.9%
1.0%
0.2%
wood (tonnes)
nil
0.07
nil
0.09
0.03
nil
0.82
nil
nil
1.09
wood %
nil
1.1%
nil
0.2%
0.3%
nil
0.1%
nil
nil
0.2%
Total solid domestic fuel %
17.1%
4.4%
6.1%
6.0%
7.4%
10.6%
2.9%
9.5%
2.5%
1.6%


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