Removal and degradation characteristics of quinolone antibiotics in laboratory-scale activated sludge reactors under aerobic, nitrifying and anoxic conditions

Dorival-García, Noemí; Zafra-Gómez, A.; Navalón, Alberto; González‐López, Jesús; Hontoria, E.; Vı́lchez, J.L.

doi:10.1016/j.jenvman.2013.02.007

Cited by 124 publications

(60 citation statements)

References 39 publications

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“…increase of effluent NH 3 eN concentrations), elevated ROX concentrations were observed in the AS and CW processes. Negligible biodegradation rates of micro-pollutant under anoxic conditions were also verified by Dorival-García et al (2013). Nitrifying bacterium usually facilitates the enrichment of various non-specific mono-and dioxygenase enzymes associated with both heterotrophic and autotrophic microorganisms, which may promote the degradation of antibiotics in WWTFs Han Tran et al, 2009).…”

Section: Correlation Of Nitrification and Antibiotics Removal In As Amentioning

confidence: 93%

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Occurrence and removal of antibiotics in ecological and conventional wastewater treatment processes: A field study

Dong

Yuan

Wang

et al. 2016

Journal of Environmental Management

138

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a b s t r a c tThe occurrence and removal of 19 antibiotics (including four macrolides, eight sulfonamides, three fluoroquinolones, three tetracyclines, and trimethoprim) were investigated in two ecological (constructed wetland (CW) and stabilization pond (SP)) and two conventional wastewater treatment processes (activated sludge (AS) and micro-power biofilm (MP)) in a county of eastern China. All target antibiotics were detected in the influent and effluent samples with detection frequencies of >90%. Clarithromycin, ofloxacin, roxithromycin and erythromycin-H 2 O were the dominant antibiotics with maximum concentrations reaching up to 6524, 5411, 964 and 957 ng/L, respectively; while the concentrations of tiamulin, sulfamerazine, sulfathiazole, sulfamethazine, sulfamethizole and sulfisoxazole were below 10 ng/L. Although the mean effluent concentrations of target antibiotics were obviously lower than the influent ones (except ciprofloxacin), their removals were usually incomplete. Principal component analysis showed that the AS and CW outperformed the MP and SP processes and the AS performed better than the CW process in terms of antibiotics removal. Both the AS and CW processes exhibited higher removal efficiencies in summer than in winter, indicating biological degradation could play an important role in antibiotics removal. Because of the incomplete removal, the total concentration of detected antibiotics increased in the mixing and downstream sections of a local river receiving the effluent from a typical wastewater treatment facility practicing AS process. Nowadays, ecological wastewater treatment processes are being rapidly planned and constructed in rural areas of China; however, the discharge of residual antibiotics to the aquatic environment may highlight a necessity for optimizing or upgrading their design and operation.

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Section: Correlation Of Nitrification and Antibiotics Removal In As Amentioning

confidence: 93%

“…This work was financially supported by the People Programme (Marie Curie Actions) of the European Union's Seventh Programme FP7/2007-2013, and the National Natural Science Foundation (51138009, 51408590) and the Ministry of Housing and Urban-Rural Development (2012ZX07313-001-07) of China..…”

Section: Acknowledgementsmentioning

confidence: 99%

Occurrence and removal of antibiotics in ecological and conventional wastewater treatment processes: A field study

Dong

Yuan

Wang

et al. 2016

Journal of Environmental Management

138

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“…Previous studies generally show that TrOC biodegradation preferentially occurs under aerobic than anoxic conditions [13,56,58,59], The laboratory-scale reactors of Suarez et al [13] and Dorival-García et al [56] demonstrated that compounds such as dicloflenac, naproxen and roxithromycin were recalcitrant under anoxic conditions, but had moderate to high removal (e.g. 14.9-60%) under aerobic conditions.…”

Section: Troc Biodegradationmentioning

confidence: 98%

“…AOO is necessary for the biodegradation of some pharmaceuticals (e.g. roxithromycin, erythromycin, and iopromide) [13,17,56], although cooperative biodegradation of 17α-ethinylestradiol, trimethoprim, and their metabolites by heterotrophs and AOO has been observed [55].…”

Section: Troc Biodegradationmentioning

confidence: 99%

“…bacteria, yeasts, and fungi), WRF emerges as a promising option because it removes a wide range of TrOCs that bacteria are typically unable to degrade [157,160]. Indeed small-scale studies demonstrate that WRF can significantly remove TrOCs from digested or dewatered sludge [10,56,154,155,157]. However, a major limitation impeding its application is that WRF enzymatic activity is prone to disruption due to bacterial contamination [157].…”

Section: Future Research Priorities In Troc Removal From Biosolidsmentioning

confidence: 99%

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Trace organic contaminants in biosolids: Impact of conventional wastewater and sludge processing technologies and emerging alternatives

Semblante

Hai

Huang

et al. 2015

Journal of Hazardous Materials

121

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Effect of temperature on treating chemical synthesis‐based pharmaceutical wastewater containing 7‐ACA by a novel multi‐stage loop membrane bioreactor

Chen

et al. 2014

J of Chemical Tech & Biotech

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BACKGROUND: 7-amino cephalosporanic acid (7-ACA) is the most critical intermediate for cephalosporin antibiotics but has caused serious water pollution. In this study, a bench-scale test was conducted with a novel multi-stage loop membrane bioreactor (MsLMBR) to treat chemical synthesis-based pharmaceutical wastewater containing 7-ACA. RESULTS: The MsLMBR system comprised a multi-stage loop aerobic reactor and a separate membrane module operated at different temperatures. Results showed that for MsLMBR1 at 15 ∘ C, MsLMBR2 at 25 ∘ C and MsLMBR3 at 35 ∘ C, the average total chemical oxygen demands (TCODs) of the effluent were all less than 80 mg L −1 . For MsLMBR2 and MsLMBR3, the microorganisms had better microbial activities and drug-resistances, and the biological removal was given priority to TCOD removal. But for MsLMBR1, there was no significant difference between biological removal and physical removal at the early stage. Average 7-ACA concentration of effluent was less than 40 mg L −1 at 35 ∘ C. The laboratory data fitted the simulated data well using a time series analysis model (TSAM) in a MsLMBR system. CONCLUSION: 7-ACA pharmaceutical wastewater was effectively treated in a MsLMBR system, which also performed well at low temperature. In addition, the TSAM was a valid means to simulate and predict the efficiency of removal of an organic substance. Industry pore size is 0.22 um and molecular weight cut-off (MWCO) is 15000 D. The maximum operating temperature of this separate membrane module is 60 ∘ C, maximum operating pressure is 800 kPa, the range of pH is 2-10, designed membrane flux (critical flux )

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Removal and degradation characteristics of quinolone antibiotics in laboratory-scale activated sludge reactors under aerobic, nitrifying and anoxic conditions

Cited by 124 publications

References 39 publications

Occurrence and removal of antibiotics in ecological and conventional wastewater treatment processes: A field study

Occurrence and removal of antibiotics in ecological and conventional wastewater treatment processes: A field study

Trace organic contaminants in biosolids: Impact of conventional wastewater and sludge processing technologies and emerging alternatives

Effect of temperature on treating chemical synthesis‐based pharmaceutical wastewater containing 7‐ACA by a novel multi‐stage loop membrane bioreactor

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