INVESTIGADORES
FERRO OROZCO Ana Micaela
artículos
Título:
Simultaneous biodegradation of bisphenol A and a biogenic substrate in semi-continuous activated sludge reactors
Autor/es:
ANA MICAELA FERRO OROZCO; EDGARDO MARTIN CONTRERAS; ZARITZKY NOEMÍ ELIZABET
Revista:
BIODEGRADATION
Editorial:
SPRINGER
Referencias:
Año: 2015
ISSN:
0923-9820
Resumen:
In this work, the simultaneous
degradation of BPA and cheese whey (CW) in semi-continuous activated
sludge reactors was studied. The acclimation process and microbial
growth on BPA, CW and BPA + CW were analyzed. In addition, the effect of
increasing CW concentration on the BPA degradation by acclimated
activated sludge was also studied. In order to reduce the factors
involved in the analysis of the simultaneous degradation of BPA and CW,
the effect of bisphenol A (BPA) on activated sludge not previously
exposed to BPA (native activated sludge) was studied. Results
demonstrate that BPA concentrations lower than 40 mg l−1
had a negligible effect on the growth of native activated sludge. In
the semi-continuous reactors, the presence of CW increased the
acclimation time to 40 mg l−1 of BPA.
Once the capability of degrading BPA was acquired, the removal of BPA
was not affected by the presence of CW. Increasing the CW concentration
did not affect the removal of BPA by the acclimated activated sludge.
Additionally, the CW consumption was not modified by the presence of
BPA. Kinetic and stoichiometric coefficients reported in the present
work can be useful in developing mathematical models to describe the
simultaneous aerobic biodegradation of a biogenic substrate, such as CW,
and BPA by activated sludge.