Biodegradation of Diuron in Airlift Reactor by Variovorax sp. SRS16


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Abstract


Diuron, is a substituted-urea herbicide considered as priority pollutant of water due to the persistency and high toxicity to aquatic organisms. In this work, the bacterium Variovorax sp. SRS16 was cultured in airlift reactor operated in batch mode with suspended cells, measuring diuron elimination en detoxification capability by standard toxicity test. Moreover, cell adhesion to inert supports was studied. Results indicated that cell growth and herbicide elimination are related, reaching higher biodegradation rates than previously reported in non-aerated reactor. In addition, biolite and sand particles supported biofilm formation, but the stress forces developed during reactor operation produced biofilm detachment
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Keywords


Airlift Reactor; Biodegradation; Diuron; Aerobic Bacterium; Biofilm

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References


S. Giacomazzi, N. Cochet, Environmental impact of diuron transformation. A review. Chemosphere 56 (2004) 1021-1032.
http://dx.doi.org/10.1016/j.chemosphere.2004.04.061

Field, J.A., Reed, R.L., Sawyer, T.E., Griffith, S.M., Wigington, P.J. Diuron occurrence and distribution in soil and surface and ground water associated with grass seed production. J. Environ. Qual. 32 (2003) 171-179.
http://dx.doi.org/10.2134/jeq2003.171

Gatidou, G., Thomaidis, N.S. Evaluation of single and joint toxic effects of two antifouling biocides, their main metabolites and copper using phytoplankton bioassays. Aquat. Toxicol. 85 (2007) 184-191.
http://dx.doi.org/10.1016/j.aquatox.2007.09.002

Sørensen,S.R., Simonsen,A., Aamand,J. Constitutive mineralization of low concentrations of the herbicide linuron by a Variovorax sp. strain. FEMS Microbiology Letters, 292 (2009) 291 – 296
http://dx.doi.org/10.1111/j.1574-6968.2009.01501.x

Sørensen, S.R.; Albers, C.N; Aamand, J. 2008. Rapid Mineralization of the Phenylurea Herbicide Diuron by Variovorax sp. Strain SRS16 in Pure Culture and within a Two-Member Consortium. Applied and Environmental Microbiology, 8: 2332 – 2340.
http://dx.doi.org/10.1128/aem.02687-07


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