Environmental Engineering Reference
In-Depth Information
Figure 14.2.
Molecular structure of some aromatic hydrocarbons [YON 91]
Density
Solubility
g/m
3
at 20-
25°C
Henry's
constant
Biodegradability
Oil hydrocarbons:
- light aromatic HC (BTEX),
transportation fuels, painting
solvents
- light aliphatics
- car fuels
- dense aromatic hydrocarbons (PAH
of tars)
- dense aliphatics (mineral oils)
<1
High
Very good
10
2
-10
4
<1
>1
>1
>1
High
Low
Very good
Poor
10
-3
-1
10
-2
-1
Low
Significant
10
-4
-10
-1
Oxygenated HC:
phenols, ketones, esters, ethers,
alcohols, acids
≈1
10-10
4
Low
Very good
Halogenated HC:
- mono or bi substituted aliphatics
- tri or tetra substituted aliphatics
- aromatic and poly aromatics
>1
>1
>1
10
3
-10
4
10-10
4
Variable
1
High
High
Variable
1
Very low
Very low
Very low-low
1
depending of the molecular weight
Table 14.1.
Main physical properties of the main types of hydrocarbon compounds [ACA 00]
