Skip to Content
Merck
  • Simultaneous biodegradation of a phenol and 3,4-dimethylphenol mixture under denitrifying conditions.

Simultaneous biodegradation of a phenol and 3,4-dimethylphenol mixture under denitrifying conditions.

Water science and technology : a journal of the International Association on Water Pollution Research (2003-12-03)
L Puig-Grajales, O Rodríguez-Nava, E Razo-Flores
ABSTRACT

Denitrification is a feasible alternative for the treatment of phenolic bearing-wastewaters. The aim of this study was to evaluate the biodegradability of phenolic compounds, as the only carbon and energy source in batch and continuous experiments, using nitrate as a final electron acceptor. Experiments in a continuous upward anaerobic sludge bed reactor demonstrated the possibility of biodegrading a mixture of phenol and 3,4-dimethylphenol at organic loads of 251.6 and 39.5 mg/L-d, respectively, at a COD/NO3(-)-N ratio of 2.57. A nitrogen production efficiency of 86% was obtained according to the nitrate consumption. GC-MS analyses demonstrated that m-cresol was an intermediate of 3,4-dimethylphenol degradation in batch conditions, and had an inhibitory effect on phenol degradation.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
3,4-Xylenol, ≥98%, FG