Shortening the acclimation and degradation lag of xenobiotics by enriching the energy content of microbial populations

• Autorzy: Nguyen H.L. , Chong M.N. , Bui H.M.
• Języki publikacji: EN

Abstrakty

EN

We studied shortening the acclimation and enhancement of the degradation rate for a xenobiotic organic pollutant using microbial populations grown in suspension as activated sludge. Soil populations cultivated as raw activated sludge in a steady-state fed-batch reactor and the raw sludge were re-cultured (energy enriched) with biogenic substrates and compared for their performances in acclimation and degradation of 2,4-D. The cells’ mass and ATP content were also measured during the 2,4-D acclimation and degradation. The optimal concentration of supplemental biogenic substrate and most suitable time point of re-cultivation that could produce the most shortening of lag phase were determined in a previous study. The purpose of this study was to find the true mechanism of this shortening based on the contents of cell internal ATP. As compared with the raw sludge, the enriched sludge contained a higher amount of energy at the start of acclimation and brought a shortened lag time during the acclimation process. External energy (biogenic substrates’s energy) invested into activated sludge cells could improve the microorganisms in acclimation to a xenobiotic by sustaining the energy needed for the difficult xenobiotic metabolism.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2018
• Tom: 27
• Numer: 6
• Opis fizyczny: p.2893-2897,fig.,ref.

Twórcy

autor

Nguyen H.L.

• Faculty of Biotechnology and Environmental Engineering, Hochiminh City University of Food Industry, Ho Chi Minh City, Vietnam

autor

Chong M.N.

• Department of Environmental Engineering, Dayeh University, Changhua, Taiwan

autor

Bui H.M.

• Department of Environmental Sciences, Saigon University, Ho Chi Minh City, Vietnam

Bibliografia

• 1. NIKEL P.I., PÉREZ-PANTOJA D., DE LORENZO V. Why are chlorinated pollutants so difficult to degrade aerobically? Redox stress limits 1,3-dichloprop-1-ene metabolism by Pseudomonas pavonaceae. Phil. Trans. R. Soc. B., 368 (1616), 20120377, 2013.
• 2. KUMAR B.L., GOPAL D.V.R.S. Effective role of indigenous microorganisms for sustainable environment. 3 Biotech., 5 (6), 867, 2015.
• 3. CHONG N.M., TSAI S.C., LE T.N. The biomass yielding process of xenobiotic degradation. Bioresour. Technol., 101 (12), 4337, 2010.
• 4. YANG Z., XU X., DAI M., WANG L., SHI X., GUO R. Rapid degradation of 2,4-dichlorophenoxyacetic acid facilitated by acetate under methanogenic condition. Bioresour. Technol., 232, 146, 2017.
• 5. KASBERG T., KASCHABEK S., MÜLLER D., REINEKE W. Maleylacetate reductases functioning in the degradation of chloroaromatics. Int. Biodeterior. Biodegradation, 37 (3-4), 247, 1996.
• 6. MIR Z.A., ALI S., TYAGI A., ALI A., BHAT J.A., JAISWAL P., QARI H.A., OVES M. Degradation and conversion of endosulfan by newly isolated Pseudomonas mendocina ZAM1 strain. 3 Biotech., 7 (3), 211, 2017.
• 7. LACKMANN R.K., MAIER W.J., SHAMAT N. Removal of chlorinated organics by coventional biological waste treatment, Presented at: Proceedings of the Thirty-Fifth Industrial Waste Conference, pp. 502-515, 1980.
• 8. PATEL B.P., KUMAR A. Multi-substrate biodegradation of chlorophenols by defined microbial consortium. 3 Biotech., 6 (2), 191, 2016.
• 9. ABURTO-MEDINA A., BALL A.S. Microorganisms involved in anaerobic benzene degradation. Ann. Microbiol., 65 (3), 1201, 2015.
• 10. CHONG N.M., LUONG M., HWU C.S. Biogenic substrate benefits activated sludge in acclimation to a xenobiotic. Bioresour. Technol., 104, 181, 2012.
• 11. RICE E.W., BRIDGEWATER L. Standard Methods for the Examination of Water and Wastewater, 20th Edition, APHA American Public Health Association, pp. 531-545, 2012.
• 12. NGUYEN L.H., CHONG N.M. Development of an ATP measurement method suitable for xenobiotic treatment activated sludge biomass. J. Chromatogr. B Biomed. Sci. Appl., 1000, 69, 2015.
• 13. CHONG N.M., CHANG C.-S., TSAI S.C. Evolutions of microbial degradation pathways for parent xenobiotic and for its metabolites follow different schemes. Environ. Sci. Pollut. R., 19 (8), 3276, 2012.

Identyfikatory

DOI

10.15244/pjoes/81110