SciELO - Scientific Electronic Library Online

vol.40 número1Characteristics of a bioflocculant produced by a consortium of Cobetia and Bacillus species and its application in the treatment of wastewaters índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Em processo de indexaçãoSimilares em Google


Water SA

versão On-line ISSN 1816-7950
versão impressa ISSN 0378-4738


LOBO, Cintia C; BERTOLA, Nora C  e  CONTRERAS, Edgardo M. Modelling the change in the oxidation coefficient during the aerobic degradation of phenol by acclimated activated sludge. Water SA [online]. 2014, vol.40, n.1, pp.125-131. ISSN 1816-7950.

In this work the aerobic degradation of phenol by acclimated activated sludge was studied. Results demonstrate that while the phenol removal rate by acclimated activated sludge follows the Monod model, the oxygen uptake rate obeys a Haldane-type equation. The phenol oxidation coefficient obtained at different intial phenol concentrations ranged from 1.9 to 2.6 mol O2 · mol-1 phenol. A mathematical model based on a simplified version of the catalytic mechanism of the enzyme phenol 2-monooxygenase was developed to predict transient phenol concentrations and oxygen requirements by phenol-acclimated activated sludge in batch reactors under different initial phenol concentrations. The proposed model not only adequately represents the experimental results of the present paper, but also those reported by other authors. Particular cases of the proposed model are discussed.

Palavras-chave : oxygen uptake rate; phenol; biodegradation; biokinetic model; respirometry.

        · texto em Inglês     · Inglês ( pdf )