Antibiotics and antibiotic resistance in water environments

Baquero, Fernando; Martínez, José-Luis; Cantón, Rafael

doi:10.1016/j.copbio.2008.05.006

Cited by 1,710 publications

(1,063 citation statements)

References 48 publications

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“…In contrast, the other two groups of antibiotics, macrolides (0.94%) and sulfonamides (0.25%), contributed little to the total antibiotics. In general, the concentration of antibiotics in sludge mainly depends on the solid-water distribution coefficient (Kd) (Baquero et al, 2008). It has been reported that Kds of quinolones were relatively high (Okuda et al, 2009), which were up to two or three orders of magnitude higher than those of macrolides and sulfonamides .…”

Section: Concentrations Of Antibiotics In Sewage Sludgementioning

confidence: 99%

“…In WWTPs, antibiotics were removed mainly through sorption and biodegradation by the activated sludge (Hyland et al, 2012;Jelic et al, 2011;Maeng et al, 2011;Yang et al, 2012). For some antibiotics, especially hydrophobic antibiotics, with their limited mobility and low biodegradation in the sludge, they are prone to adsorb onto sewage sludge and more stable than those in wastewater (Baquero et al, 2008;Cruz Moreno-Bondi et al, 2009;Zhou et al, 2009). Several studies have reported that many antibiotics in wastewater were considerably eliminated by sorption and transported to sewage sludge during sewage treatment (Batt et al, 2007;Beausse, 2004;Escher et al, 2011;Hörsing et al, 2011), indicating that sludge can serve as an important reservoir of antibiotics.…”

Section: Introductionmentioning

confidence: 99%

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Occurrence, distribution and potential affecting factors of antibiotics in sewage sludge of wastewater treatment plants in China

Shi

Gao

et al. 2013

Science of The Total Environment

209

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Section: Concentrations Of Antibiotics In Sewage Sludgementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Occurrence, distribution and potential affecting factors of antibiotics in sewage sludge of wastewater treatment plants in China

Shi

Gao

et al. 2013

Science of The Total Environment

209

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“…The concentrations of micropollutants in raw sewage commonly range from a few ng/L to several µg/L, which essentially distinguish them from traditional contaminants (organic matter, nitrogen and phosphorus). Despite the low concentrations, micropollutants have been associated with a number of negative effects, such as toxicity and endocrine disrupting effects on aquatic organisms and antibiotic resistance of microorganisms (Baquero et al, 2008;Fent et al, 2006). As promising alternatives to suspended-growth activated sludge processes, attached-growth processes are effective techniques for wastewater treatment, as they offer a number of advantages over activated sludge processes.…”

Section: Introductionmentioning

confidence: 99%

Removal and fate of micropollutants in a sponge-based moving bed bioreactor

Luo

Guo

Ngo

et al. 2014

Bioresource Technology

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This study investigated the removal of micropollutants using polyurethane sponge as attached-growth carrier. Batch experiments demonstrated that micropollutants could adsorb to non-acclimatized sponge cubes to varying extents. Acclimatized sponge showed significantly enhanced removal of some less hydrophobic compounds (logD < 2.5), such as ibuprofen, acetaminophen, naproxen, and estriol, as compared with nonacclimatized sponge. The results for bench-scale sponge-based moving bed bioreactor (MBBR) system elucidated compound-specific variation in removal, ranging from 25.9% (carbamazepine) to 96.8% (bEstradiol 17-acetate) on average. In the MBBR system, biodegradation served as a major removal pathway for most compounds. However, sorption to sludge phase was also a notable removal mechanism of some persistent micropollutants. Particularly, carbamazepine, ketoprofen and pentachlorophenol were found at high concentrations (7.87, 6.05 and 5.55 lg/g, respectively) on suspended biosolids. As a whole, the effectiveness of MBBR for micropollutant removal was comparable with those of activated sludge processes and MBRs. AbstractThis study investigated the removal of micropollutants using polyurethane sponge as attached-growth carrier. Batch experiments demonstrated that micropollutants could adsorb to non-acclimatized sponge cubes to varying extents. Acclimatized sponge showed significantly enhanced removal of some less hydrophobic compounds (log D < 2.5), such as ibuprofen, acetaminophen, naproxen, and estriol, as compared with nonacclimatized sponge. The results for bench-scale sponge-based moving bed bioreactor (MBBR) system elucidated compound-specific variation in removal, ranging from 25.9%(carbamazepine) to 96.8% (β-Estradiol 17-acetate) on average. In the MBBR system, biodegradation served as a major removal pathway for most compounds. However, sorption to sludge phase was also a notable removal mechanism of some persistent micropollutants. Particularly, carbamazepine, ketoprofen and pentachlorophenol were 2 found at high concentrations (7.87, 6.05 and 5.55 µg/g, respectively) on suspended biosolids. As a whole, the effectiveness of MBBR for micropollutant removal was comparable with those of activated sludge processes and MBRs.

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“…O uso intensivo de antibióticos contribuiu para o aumento da seleção de bactérias resistentes, inclusive em ambientes aquáticos. Desta forma, estas bactérias podem representar um reservatório de resistência, bem como um meio para a propagação e evolução de genes de resistência (Baquero et al, 2008).…”

Section: Introductionunclassified

Pesquisa de fatores de virulência em Pseudomonas aeruginosa isoladas de águas minerais naturais

Pedrosa¹,

Brandão²,

Medeiros³

et al. 2014

Rev. ambiente água

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This study evaluated biofilm formation and antimicrobial susceptibility of Pseudomonas aeruginosa isolated to evaluate the microbiological quality of 80 natural mineral water samples sold in 20 L bottles. The quantity of P. aeruginosa and enterococci was assessed, including total coliforms, thermotolerant coliforms and sulfite-reducing clostridia (SRC). Biofilm production from P. aeruginosa was evaluated in brain heart infusion broth (BHI) and sterile natural mineral water at temperatures of 25 and 35°C for 24 and 48 h. Antimicrobial susceptibility tests were performed using the agar diffusion method (Kirby-Bauer). Of the 80 samples analyzed, 40 (50%) presented unsatisfactory microbiological quality according to RDC no. 275/05. Thirty-eight (47.5%) samples presented P. aeruginosa, nine (11.2%) total coliforms, four (5.0%) SRC and one (1.2%) thermotolerant coliform. Sixteen P. aeruginosa strains (51.6%) were classified as non-adherent or weakly adherent, both in BHI as in mineral water. However, five strains (16.1%) were strongly adherent in the two matrices, mainly in BHI at the temperature of 25ºC. The study also isolated resistant or intermediate resistant strains to antibiotics of aminoglycosides and/or β-lactams classes. It was concluded that P. aeruginosa isolates were able to produce biofilm in the studied matrices and presented resistance to antimicrobials. Half of the samples presented unsatisfactory microbiological quality, mostly due to P. aeruginosa contamination.

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Antibiotics and antibiotic resistance in water environments

Cited by 1,710 publications

References 48 publications

Occurrence, distribution and potential affecting factors of antibiotics in sewage sludge of wastewater treatment plants in China

Occurrence, distribution and potential affecting factors of antibiotics in sewage sludge of wastewater treatment plants in China

Removal and fate of micropollutants in a sponge-based moving bed bioreactor

Pesquisa de fatores de virulência em Pseudomonas aeruginosa isoladas de águas minerais naturais

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