Improvement of pesticide removal in contaminated media using aqueous extracts from contaminated biopurification systems

Aguilar-Romero, Inés; Dillewijn, Pieter van; Nesme, Joseph; Sørensen, Søren J.; Romero, Esperanza

doi:10.1016/j.scitotenv.2019.07.087

Cited by 12 publications

(9 citation statements)

References 42 publications

(80 reference statements)

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“…The moisture content was maintained by adding sterile distilled water weekly. Autoclaved biomixtures were prepared in parallel as an abiotic control as described by Aguilar-Romero et al (2019).…”

Section: Degradation Study In Bps Microcosmsmentioning

confidence: 99%

“…Bioremediation strategies include biopurification systems (BPS), also known as biobeds, which have been used successfully on-farm to remove organic pollutants from wastewaters, and are being implemented as a system to control point-source contamination (De Wilde et al, 2007;Castillo et al, 2008;Dias et al,, 2020;Karas et al, 2016). The main substrate of BPS is a biomixture of topsoil and organic materials which harbours indigenous microorganisms which can become adapted to eliminate these pollutants (Castillo Diaz et al, 2016;Aguilar-Romero et al, 2019). Recently, Delgado-Moreno et al (2019) suggested that BPS based on a biomixture composed of agro-industrial olive oil waste, as available and sustainable local organic materials, could be a workable strategy to remove PPCPs from wastewaters generated by the pharmaceutical industry, hospitals, or effluents from wastewater treatment plants.…”

Section: Introductionmentioning

confidence: 99%

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Bacterial ecotoxicity and shifts in bacterial communities associated with the removal of ibuprofen, diclofenac and triclosan in biopurification systems

Aguilar-Romero

Romero

Wittich

et al. 2020

Science of The Total Environment

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The proliferation and possible adverse effects of emerging contaminants such as pharmaceutical and personal care products (PPCPs) in waters and the environment is causing increased concern. We investigated the dissipation of three PPCPs: ibuprofen (IBP), diclofenac (DCF) and triclosan (TCS), separately or in mixture, in the ppm range in microcosm biopurification systems (BPS), paying special attention to their effect on bacterial ecotoxicity and on bacterial community structure and composition. The results reveal that the BPS efficiently dissipates IBP and DCF with 90% removal after 45 and 84 days of incubation, respectively. However, removal of TCS required longer incubation, 127 days for 90% removal. Furthermore, dissipation of the three PPCPs was slower when all three were applied to the BPS as a mixture. TCS had an initial negative effect on bacterial viability by a decrease of 34-43%; however, this effect was mitigated when all three PPCPs were present simultaneously. The bacterial communities in the BPS were affected much more by incubation time than by the applied PPCPs.Nonetheless, the PPCPs affected differentially the composition and relative abundance of bacterial taxa. IBP and DCF initially increased bacterial diversity and richness while exposure to TCS generally provoked the opposite effect. TCS had the largest effect on bacterial groups negatively affecting the relative abundance of Acidobacteria, Rickettsiales, Methylophilales, Methylacidiphilae and Phycisphaerae. On the other hand, all three PPCPs stimulated the dominant bacterial families Promicromonosporaceae, Caulobacteraceae, Xanthomonadaceae, Cyclobacteriaceae, Sphingobacteriaceae and Verrucomicrobiaceae, whose members could harbour mechanisms for resistance by degradation and/or detoxification.

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Section: Degradation Study In Bps Microcosmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bacterial ecotoxicity and shifts in bacterial communities associated with the removal of ibuprofen, diclofenac and triclosan in biopurification systems

Aguilar-Romero

Romero

Wittich

et al. 2020

Science of The Total Environment

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“…This increase may have favored the activity of diuron degrading microorganisms already in the biomixtures, more noticeable for CP biomixture with lower N content. In a previous study of our research group, it was demonstrated that diuron degradation was enhanced in biomixtures added with indigenous microorganisms previously exposed to diuron residues [5].…”

Section: Dissipation Of Pesticide Residues In the Biomixturesmentioning

confidence: 87%

“…Among others, dispersion, landfill disposal and incineration are techniques applicable to the exhausted biomixtures but, in general, they are expensive and transfer pesticide residues to other compartments. Therefore, decontamination of exhausted biomixtures is essential prior to their final disposal or prior to their possible reuse to enhance biodegradation in new biobeds [5]. Previous studies revealed that, after 76 days of composting and maturation, 70% of bentazon, 93% of linuron, 90% of metalaxyl and 20% of bifenthrin were dissipated from a contaminated biomixture used in a biopurification system [6].…”

Section: Introductionmentioning

confidence: 99%

Vermiremediation of Biomixtures from Biobed Systems Contaminated with Pesticides

2020

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Biobeds bioremediation systems are effectively used for minimizing pesticide point-source contamination. For keeping the biobed effectiveness, its biomixture needs to be replaced every so often. The exhausted biomixtures can contain pesticide residues and so they require a special treatment before being discharged into the environment. In this study, we explore the potential of vermiremediation for cleaning up biobed biomixtures contaminated with pesticides. Two biomixtures composed of soil:peat:straw (P) and soil:vermicompost of wet olive cake: olive tree pruning (O), contaminated with high loads of four pesticides, were used. Vermicomposting was carried out by Eisenia fetida earthworms for 12 weeks. Results showed that 50% and 70% of the earthworms colonized the contaminated P and O biomixtures, respectively, but the number of alive earthworms decreased with time just as their weight. The colonization of biomixtures did not significantly affect the dissipation of imidacloprid and tebuconazole, but increased 1.4 fold the dissipation of oxyfluorfen in both biomixtures and that of diuron in biomixture P. Although the presence of high loads of pesticides and the composition of the biomixtures limited the vermiremediation, satisfactory results were obtained for diuron and oxyfluorfen. Complementing vermiremediation with other remediation practices could improve the efficiency of this technology.

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“…Three genes ( bnpABC ) were responsible for initiating 2B4NP degradation reaction. Romero, van Dillewijn, Nesme, Sørensen, and Romero (2019) reported that aqueous extracts from aged residual biomixtures in biopurification systems (BPSs) exposed to pesticides improved pesticide removal. Therefore, extracts containing a pollutant‐acclimatized microbiome could be used as part of a bioaugmentation strategy to improve the functioning of on‐farm BPSs and contaminated systems.…”

Section: Biological Treatmentmentioning

confidence: 99%

Hazardous wastes treatment technologies

Shih

et al. 2020

Water Environment Research

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Improvement of pesticide removal in contaminated media using aqueous extracts from contaminated biopurification systems

Cited by 12 publications

References 42 publications

Bacterial ecotoxicity and shifts in bacterial communities associated with the removal of ibuprofen, diclofenac and triclosan in biopurification systems

Bacterial ecotoxicity and shifts in bacterial communities associated with the removal of ibuprofen, diclofenac and triclosan in biopurification systems

Vermiremediation of Biomixtures from Biobed Systems Contaminated with Pesticides

Hazardous wastes treatment technologies

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