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Title

Removal and biotransformation of 4-nonylphenol by Arthrospira maxima and Chlorella vulgaris consortium

AuthorsLópez-Pacheco, I.Y.; Salinas-Salazar, C.; Silva-Núñez, A.; Rodas-Zuluaga, L.I.; Donoso-Quezada, J.; Ayala-Mar, S.; Barceló, Damià ; Iqbal, H.M.N.; Parra-Saldívar, Roberto
Issue Date2019
PublisherElsevier
CitationEnvironmental Research 179: 108848 (2019)
Abstract4-Nonylphenol (4-NP) is an anthropogenic contaminant found in different environmental matrices that has an effect over the biotic and abiotic factors within the environment. Bioremediation by microorganisms can be used as a potential treatment to remove this pollutant. In this work, a consortium of two microorganisms, Arthrospira maxima and Chlorella vulgaris, was employed to remove 4-NP from water. The parameters analyzed included cell growth, removal of 4-NP, and 4-NP remnant in the biomass. In addition, the metabolites produced in the process by this consortium were identified. It was found that C. vulgaris is more resistant to 4-NP than A. maxima (cell growth inhibition by 4-NP of 99%). The consortium used in this study had an IC greater than any strain of microalgae or cyanobacteria reported for 4-NP removal (9.29 mg/L) and reduced up to 96% of 4-NP in water in the first 48 h of culture. It was also observed that there is a bio-transformation of 4-NP, comparable with the process carried out by another bacterium, in which three similar metabolites were found (4-(1-methyl-octyl)-4-hydroxy-cyclohex-2-enone, 4-nonyl-4-hydroxy-ciclohexa-2,5-dienone and 4-nonyl-4-hydroxy- ciclohex-2-enone) and one that is similar to plant metabolism (4-nonyl-(1-methyl,6,8-metoxy)-hydroxybenzene). These results indicate that microalgae and cyanobacteria consortium can be used to remove 4-NP from water.
Publisher version (URL)http://dx.doi.org/10.1016/j.envres.2019.108848
URIhttp://hdl.handle.net/10261/209881
Identifiersdoi: 10.1016/j.envres.2019.108848
issn: 1096-0953
Appears in Collections:(IDAEA) Artículos
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