2024-03-28T21:55:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2098812022-09-26T09:43:06Zcom_10261_5062com_10261_5col_10261_5064
00925njm 22002777a 4500
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López-Pacheco, I.Y.
author
Salinas-Salazar, C.
author
Silva-Núñez, A.
author
Rodas-Zuluaga, L.I.
author
Donoso-Quezada, J.
author
Ayala-Mar, S.
author
Barceló, Damià
author
Iqbal, Hafiz M.N.
author
Parra-Saldívar, Roberto
author
2019
4-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.
Environmental Research 179: 108848 (2019)
http://hdl.handle.net/10261/209881
10.1016/j.envres.2019.108848
Removal and biotransformation of 4-nonylphenol by Arthrospira maxima and Chlorella vulgaris consortium