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Büyüksönmez, F. et al.

Optimization of simultaneous chemical and biological mineralization of perchloroethylene.

Optimization of the simultaneous chemical and biological mineralization of perchloroethylene (PCE) by modified Fenton's reagent and Xanthobacter flavus was investigated by using a central composite rotatable experimental design. Concentrations of PCE, hydrogen peroxide, and ferrous iron and the microbial cell number were set as variables. Percent mineralization of PCE to CO2 was investigated as a response. A second-order, quadratic response surface model was generated and fit the data adequately, with a correlation coefficient of 0.72. Analysis of the results showed that the PCE concentration had no significant effect within the tested boundaries of the model, while the other variables, hydrogen peroxide and iron concentrations and cell number, were significant at alpha = 0.05 for the mineralization of PCE. The 14C radiotracer studies showed that the simultaneous chemical and biological reactions increased the extent of mineralization of PCE by more than 10% over stand-alone Fenton reactions.[1]

References

Optimization of simultaneous chemical and biological mineralization of perchloroethylene. Büyüksönmez, F., Hess, T.F., Crawford, R.L., Paszczynski, A., Watts, R.J. Appl. Environ. Microbiol. (1999) [Pubmed]

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