M. Naziruddin et al., DETERMINATION OF BIODEGRADATION KINETICS OF VOLATILE ORGANIC-COMPOUNDS THROUGH THE USE OF RESPIROMETRY, Water environment research, 67(2), 1995, pp. 151-158
Electrolytic respirometry was used to determine the biodegradation kin
etic parameters of five volatile aromatic organic compounds: benzene,
1,2-dichlorobenzene, 1,3-dichlorobenzene, 1,4-dichlorobenzene, and 1,2
,3-trichlorobenzene. A protocol developed earlier was modified to acco
mmodate the volatile characteristic of the test compounds. Specificall
y. the model used in data analysis was modified using Henry's law cons
tant to incorporate the effect of partitioning of a volatile substrate
between the gas and liquid phases in a batch reactor. Similar kinetic
parameters were obtained for benzene and its four chlorinated analogs
. Substrate inhibition was observed in the case of 1,3- and 1,4-dichlo
robenzene, and intermediate product inhibition was observed in the cas
e of 1,2-dichlorobenzene. In addition, all chlorinated benzenes exhibi
ted complete inhibition above certain threshold concentrations.