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Water Science Technology
Vol. 65, No: 6, 2012, Pages: 1081-6

Biodegradation of 4-methylaniline in a sequencing batch reactor

Moreno-Andrade I, Buitrón G

Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Campus Juriquilla, Universidad Nacional Autónoma de México, Querétaro, Mexico.


The biodegradation of the aromatic amine 4-methylaniline (4MA) using an aerobic sequencing batch reactor was evaluated. The specific degradation rate showed an exponential increase during the acclimation of the microorganisms reaching a maximal value of 34 mg 4MA/VSS/h. After the acclimation, the process showed a stable operation. A high similarity index was observed, indicating a low variation in the population diversity. During this period, the physicochemical parameters demonstrated a stable operation of the reactor.

Keywords:aromatic amine 4-methylaniline;microorganisms;physicochemical parameters.



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