Biomedical Engineering Reference
In-Depth Information
TABLE 2.5 Comparative Rate Constants for Anaerobic and Aerobic
Degradation
Aerobic Pseudo
First-Order
Rate Constant
Anaerobic Pseudo First-Order Rate Constant
Range of
Rates (day
1
)
Electron Acceptor Range of Rates (day
1
)
Compound
NO
3
Fe
3
þ
SO
4
2
0.53
a,b
0.17
a,b
0.1
a,b
0.23
a,b
0.35
a,b
Ethanol
NO
3
SO
4
2
Anaerobic
Methanogenic
0.0051-0.88
b,c
0.016-0.34
b,c
0.0059-0.017
b,g
0.030
b,h
, 0.35
b,i
0.019
d,e
0.011
e,f
Methanol
NO
3
Fe
3
þ
SO
4
2
Methanogenic
General
0.0095-0.045
b,c
0.0065-0.024
b,c
0.0022-0.047
b,c
0.0039-0.052
b,c
0.0062-0.00096
j,k
0.043
b,j
0.14
b,j
Benzene
a
Estimated from Corseuil and Alvarez (1996a) and Corseuil et al. (1996b, 1998).
b
Determined in a laboratory.
c
Aronson and Howard (1997).
d
Hubbard et al. (1994).
e
Determined from field data.
f
Barker et al. (1990).
g
Novak et al. (1985).
h
Bagley and Gossett (1995).
i
Florencio et al. (1995).
j
Rathbun (1998).
k
Estimated from first principles.
biodegradable (Brusseau, 1993; Hunt et al., 1997a,b). High concentra-
tions of methanol may occur near pure methanol spills and may inhibit
microbial activity near the source; however, these concentrations would
become more dilute with time and with increasing distance from the
source (Katsumata and Kastenberg, 1996).
The biodegradation of methanol has been measured both in the field
and in the laboratory studies. In an extensive field study at theCFBBorden
