Multisubstrate Monod Kinetic Model for Simultaneous Degradation of Chlorophenol Mixtures

• Published in: Biotechnology and bioprocess engineering Vol. 16; no. 5; pp. 908 - 915
• Main Authors: Durruty, Ignacio, National University of Mar del Plata, Mar del Plata CP. 7600, Argentina, Okada, Elena, National University of Mar del Plata, Mar del Plata CP. 7600, Argentina, Gonzalez, Jorge Froilan, National University of Mar del Plata, Mar del Plata CP. 7600, Argentina, Murialdo, Silvia Elena, National University of Mar del Plata, Mar del Plata CP. 7600, Argentina
• Format: Journal Article
• Language: English
• Published: Heidelberg The Korean Society for Biotechnology and Bioengineering 01.10.2011; Springer Nature B.V; 한국생물공학회
• Subjects: BACTERIA; Biodegradation; Biotechnology; Carbon; Carbon sources; Chemistry; Chemistry and Materials Science; Chlorophenol; COMPOSE PHENOLIQUE; COMPUESTOS FENOLICOS; Data processing; Energy; Engineering; Environmental protection; Enzyme kinetics; Experiments; Industrial and Production Engineering; Industrial wastes; Industrial wastewater; Kinetics; Laboratories; Mixed culture; modeling; Pentachlorophenol; PHENOLIC COMPOUNDS; Pollutants; Pseudomonas aeruginosa; Research Paper; simultaneous degradation; Studies; Toxicity; trichlorophenol; Waste water; Wastewater treatment; 생물공학; chlorophenols; modeling; bacteria; simultaneous degradation
• ISSN: 1226-8372; 1976-3816
• DOI: 10.1007/s12257-010-0418-z

Chlorophenols (CPs) are persistent and highly toxic compounds rated as priority pollutants by the Environmental Protection Agency (EPA). Frequently, these compounds are present as mixtures of CPs in industrial wastewaters. Therefore the study of biodegradation on mixed pollutants is an important aspect of biodegradation and wastewater treatment. In this work, we studied the multisubstrate degradation of CPs by a mixed culture of Pseudomonas aeruginosa and a novel Acromobacter sp. capable of using pentachlorophenol (PCP), 2,4,6 trichlorophenol (2,4,6 TCP) and 2,3,5,6 tetrachlorophenol (2,3,5,6 TeCP) as the sole sources of carbon and energy. The main objective of this work was to evaluate the effect of substrate mixtures on the degradation kinetics of PCP. Batch experiments were conducted with each CP separately and in mixtures of PCP + 2,4,6 TCP, PCP + 2,3,5,6 TeCP, and PCP + 2,4,6 TCP + 2,3,5,6 TeCP. Based upon our results we have concluded that the simultaneous degradation of CPs is a key factor contributing to the improvement of PCP degradation. The kinetic parameters for PCP and 2,4,6 TCP were obtained by fitting the data to a Monod kinetics model. Using such parameters, the model was able to predict simultaneous multisubstrate degradation of PCP with others CPs.