Gt. Tellez et al., EVALUATION OF BIOKINETIC COEFFICIENTS IN DEGRADATION OF OIL-FIELD PRODUCED WATER UNDER VARYING SALT CONCENTRATIONS, Water research, 29(7), 1995, pp. 1711-1718
Biokinetic coefficients were evaluated for a New Mexico oilfield produ
ced water. Total n-alkane removal efficiencies greater than 99% were a
chieved. Using respirometric techniques for determination of the bioki
netic constants, values of 1.37 mg/l and 0.136 h(-1) were obtained for
K-s and mu(max), respectively. Evaluation of specific growth rates at
various levels of total dissolved solids (TDS) concentration exhibite
d a distinct reduction from 0.131 to 0.047 h(-1), when TDS concentrati
ons exceeded 90,000 mg/l. Changes in cell yield were also evident, how
ever, yields increased from 0.41 to 0.69 mg biomass/mg total n-alkane.
Carbon material balances for all respirometric substrate level testin
g achieved recoveries greater than 98%.