Degradation of antibiotic ciprofloxacin by different AOP systems using electrochemically generated hydrogen peroxide

Lima, Verônica B.; Goulart, Lorena Athie; Rocha, Robson S.; Steter, Juliana R.; Lanza, Marcos R.V.

doi:10.1016/j.chemosphere.2019.125807

Cited by 78 publications

(35 citation statements)

References 34 publications

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“…However, when the pH = 7.5, antibiotic CIP, NO3 − -N and total nitrogen (TN) were 106.36 µg•L −1 , 0.917 mg•L −1 and 0.024 mg•L −1 , respectively, and the final effluent amount was the lowest level. The CIP was entirely removed within 16 h of batch experiments at the average removal efficiency of 94.20 ± 0.5%, as reported [10] and observed in this study. Furthermore, the highest average removal efficiency of CIP, TN and NO3 − -N reached 94.20%, 80.27% and 95.53%, and the enhanced removal efficiency was obtained in 3D-BERS.…”

Section: Effects Of Ph On Antibiotics Cip Nitrate and Total Nitrogensupporting

confidence: 86%

“…Therefore, CIP removal must be considered before being released into the environment [9]. Antibiotic CIP is readily detectable in man-made aquatic-environments (usually found in surface water at ng•L −1 to µg•L −1 levels) [7]; it occurs at high levels in the effluents of Wastewater Treatment plants (WWTPs) (up to 6.55-31 mg•L −1 ) receiving pharmaceutical wastewater and rivers polluted with industrial waste (up to 14 mg•L −1 ) [6,10,11]. During wastewater treatment, 80-90% of CIP was removed by adsorption to sludge, which stabilizes the substance [3].…”

Section: Introductionmentioning

confidence: 99%

“…The biodegradation rate of absorbent CIP durability was 0-40% during sludge treatment [9,15]. A considerable amount of CIP persisted in the digested sludge contained in wastewater treatment plants [10]. Unfortunately, there were no reports on the microbial community structure of CIP degradation [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…However, many processes reported in previous studies were CIP effects on the denitrifying enzymes and the activity of existing denitrifying bacteria [19][20][21]. In recent years, the biofilm electrode reactors (BERs), which combine biological and electrochemical techniques, have been shown to efficiently eliminate nitrogen, heavy metal and antibiotics [10,22]. The autotrophic denitrify bacteria are immobilized on the cathode surface, and the hydrogen produced from the water-electrolysis is also used as an electron donor in the autotrophic denitrification process [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Effect of the C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater as Assessed by a Novel 3D-BER System

et al. 2020

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Emerging pollutants in the form of pharmaceuticals have drawn international attention during the past few decades. Ciprofloxacin (CIP) is a common drug widely found in effluents from hospitals, industrial and different wastewater treatment plants, as well as rivers. In this work, the lab-scale 3D-BER system was established, and more than 90% of the antibiotic CIP was removed from Low C/N wastewater. The best results were obtained with the current intensity being taken into account, and a different C/N ratio significantly improved the removal of CIP and nitrates when the ideal conditions were C/N = 1.5–3.5, pH = 7.0–7.5 and I = 60 mA. The highest removal efficiency occurred when CIP = 94.2%, NO3−-N = 95.5% and total nitrogen (TN) = 84.3%, respectively. In this novel system, the autotrophic-heterotrophic denitrifying bacteria played a vital role in the removal of CIP and an enhanced denitrification process. Thus, autotrophic denitrifying bacteria uses CO2 and H2 as carbon sources to reduce nitrates to N2. This system has the assortment and prosperous community revealed at the current intensity of 60 mA, and the analysis of bacterial community structure in effluent samples fluctuates under different conditions of C/N ratios. Based on the results of LC-MS/MS analysis, the intermediate products were proposed after efficient biodegradation of CIP. The microbial community on biodegrading was mostly found at phylum, and the class level was dominantly responsible for the NO3−-N and biodegradation of CIP. This work can provide some new insights towards the biodegradation of CIP and the efficient removal of nitrates from low C/N wastewater treatment through the novel 3D-BER system.

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Section: Effects Of Ph On Antibiotics Cip Nitrate and Total Nitrogensupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater as Assessed by a Novel 3D-BER System

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Therefore, CIP removal must be considered before being released into the environment [9]. Antibiotic CIP is readily detectable in man aquatic-environment (usually found in surface water at ngL-1 to µg L-1 levels); [7], it occurs at high levels in the effluents of WWTPs (up to 6.55-31 mgL-1) receiving pharmaceutical wastewater and rivers polluted with industrial waste (up to 14 mgL-1) [6,10,11]. During wastewater treatment, 80-90 % of CIP was removed by adsorption to sludge, which stabilizes the substance [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater by a Novel 3D-BER System

Hassan¹,

Zhu²,

Yang³

et al. 2020

Preprint

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Emerging pollutants as pharmaceuticals have been focusing international attention for few decades. Ciprofloxacin (CIP) is a common drug widely found in effluents from hospitals, industrial and different wastewater treatment plants, as well as rivers. In this work, the lab-scale 3D-BER system was established, and more than 90% of the antibiotic CIP removal from the Low C/N wastewater. Best results were obtained with current intensity, and different C/N ratio significantly improve the removal of CIP and nitrates, when the ideal conditions were; C/N = 1.5-3.5, pH =7.0-7.5, and I = 60 mA. The highest removal efficiency of CIP = 94.20 %, NO3--N= 95.53 % and total nitrogen (TN) = 84.27 %, respectively. In this novel system, the autotrophic-heterotrophic denitrifying bacteria played vital role for the removal of CIP and enhanced denitrification process. Thus, autotrophic denitrifying bacteria uses CO2 and H2 as carbon sources to reduce nitrates to N2. This system has the assortment and prosperous community revealed at the current intensity of 60 mA, and the analysis of bacterial community structure in effluent samples fluctuates under different condition of C/N ratios. According to the results of LC-MS/MS analysis, the intermediate products were proposed after efficient biodegradation of CIP. Microbial community on biodegrading was mostly found at phylum, and class level was dominantly responsible for the NO3--N and biodegradation of CIP. This work can provide some new insights towards the biodegradation of CIP and the efficient removal of nitrates from low C/N wastewater treatment by the novel 3D-BER system.

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Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

Lakshmi,

Iyer,

Gogate

2024

Can J Chem Eng

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The present work investigates the treatment of wastewater containing an antibiotic, ciprofloxacin (CIP), using acoustic cavitation (AC) coupled with other advanced oxidation processes (AOPs). For the laboratory scale degradation study, operating parameters like drug concentration, operating pH, and initial temperature were initially optimized and then used in hybrid approach of AC in combination with AOPs. At 15 m/L initial drug concentration, neutral pH of 7, and ambient temperature of 30°C, optimum CIP degradation of 13.66% was obtained within 120 min of operation. The intensification of the AC‐based approach was subsequently achieved using other oxidants like H2O2, potassium persulphate (KPS), and O3. The combination of AC with H2O2 and KPS resulted in 44.30% and 35.41% CIP degradation, respectively, while AC combined with ozone resulted in almost complete degradation of CIP within 90 min of treatment with a maximum cavitational yield of 4.761 × 10−6 mg/J. The cost estimation for the optimized treatment approaches revealed that AC combined with ozone is the best process for degradation with the least operational cost of 8.7 Rs/L (105 US $/m3). Complete degradation of CIP with AC + O3 based approach at much lower costs opens a window for implementation in the pharmaceutical industries.

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Degradation of antibiotic ciprofloxacin by different AOP systems using electrochemically generated hydrogen peroxide

Cited by 78 publications

References 34 publications

Effect of the C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater as Assessed by a Novel 3D-BER System

Effect of the C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater as Assessed by a Novel 3D-BER System

Effect of C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater by a Novel 3D-BER System

Treatment of wastewater containing ciprofloxacin using the hybrid treatment approach based on acoustic cavitation

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