Aerobic degradation of ibuprofen in batch and continuous reactors by an indigenous bacterial community

Environmental Technology
María S FortunatoSonia E Korol

Abstract

Water from six points from the Riachuelo-Matanza basin was analyzed in order to assess ibuprofen biodegradability. In four of them biodegradation of ibuprofen was proved and degrading bacterial communities were isolated. Biodegradation in each point could not be correlated with sewage pollution. The indigenous bacterial community isolated from the point localized in the La Noria Bridge showed the highest degradative capacity and was selected to perform batch and continuous degradation assays. The partial 16S rRNA gene sequence showed that the community consisted of Comamonas aquatica and Bacillus sp. In batch assays the community was capable of degrading 100 mg L(-1) of ibuprofen in 33 h, with a specific growth rate (μ) of 0.21 h(-1). The removal of the compound, as determined by High performance liquid chromatography (HPLC), exceeded 99% of the initial concentration, with a 92.3% removal of Chemical Oxygen Demand (COD). In a down-flow fixed-bed continuous reactor, the community shows a removal efficiency of 95.9% of ibuprofen and 92.3% of COD for an average inlet concentration of 110.4 mg. The reactor was kept in operation for 70 days. The maximal removal rate for the compound was 17.4 g m(-3) d(-1). Scanning electron microsco...Continue Reading

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Citations

Jul 18, 2018·Environmental Technology·Ricado SalgadoMaria T Barreto Crespo
Mar 13, 2019·Environmental Science and Pollution Research International·Efstathia NavrozidouSpyridon Ntougias
May 14, 2021·The Science of the Total Environment·Sumona ShowGopinath Halder
Nov 19, 2021·PloS One·Irina B IvshinaElena V Vikhareva
Jan 4, 2022·Folia Microbiologica·Rosane Dos S GrignetCaroline da C S Gonçalves

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Datasets Mentioned

BETA
AS3000

Methods Mentioned

BETA
PCR
scanning electronic microscopy
scanning electron microscopy

Software Mentioned

ChromQuest Chromatography Data System
Basic Local Alignment Search Tool ( Blast )

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