INVESTIGADORES
CONTRERAS edgardo Martin
artículos
Título:
Inhibition kinetics during the oxidation of binary mixtures of phenol with catechol, resorcinol and hydroquinone by phenol acclimated activated sludge
Autor/es:
LOBO, CINTIA; BERTOLA, NORA; CONTRERAS, EDGARDO MARTÍN
Revista:
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
Editorial:
BRAZILIAN SOC CHEMICAL ENG
Referencias:
Lugar: BRASIL; Año: 2016 vol. 33 p. 57 - 71
ISSN:
0104-6632
Resumen:
In this work the aerobic degradation of phenol (PH), catechol (CA),resorcinol (RE), hydroquinone (HY) and the binary mixtures PH+CA, PH+RE, PH+HYby phenol-acclimated activated sludge was studied. Single substrate experimentsshow a Haldane-type dependence of the respiration rate on PH, RE and HY whilethe Monod model corresponded to CA. Binary substrate experiments demonstratedthat the presence of a second substrate only affected the kinetics, but not thestoichiometry of the oxidation of the tested compounds. While CA inhibited theoxidation of PH, PH inhibited the oxidation of RE and HY. A mathematical modelwas developed to represent the aerobic biodegradation of the tested phenoliccompounds. The agreement between the proposed model and the experimental data indicatesthat the proposed model can be useful for predicting substrates and dissolvedoxygen concentrations in bioreactors treating phenolic wastewaters.