Ultrasound assisted enzymatic degradation of diclofenac sodium: Optimization of process parameters and kinetics

Sutar, Rahul S.; Rathod, Virendra K.

doi:10.1016/j.jwpe.2014.12.003

Cited by 15 publications

(6 citation statements)

References 35 publications

(45 reference statements)

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“…DCF [118] , SMX and IBP [40] . However, Sutar et al [137] showed using DCF that there exists a temperature threshold of 50 °C, above which increasing solution temperature reduced the degradation efficiency from 100% to below 20%. This decrease in sonochemical effect at elevated temperatures is caused by the increase in the vapour that enters the cavitation bubble which reduces the cavitation collapse intensity by the “cushion” effect [136] , [138] .…”

Section: Ultrasound (Us) Processingmentioning

confidence: 99%

A review on pharmaceuticals removal from waters by single and combined biological, membrane filtration and ultrasound systems

Alfonso-Muniozguren

Serna-Galvis

Bussemaker

et al. 2021

Ultrasonics Sonochemistry

106

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Section: Ultrasound (Us) Processingmentioning

confidence: 99%

A review on pharmaceuticals removal from waters by single and combined biological, membrane filtration and ultrasound systems

Alfonso-Muniozguren

Serna-Galvis

Bussemaker

et al. 2021

Ultrasonics Sonochemistry

106

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“…The mentioned advantages makes the laccase treatment as a green technique over chemical methods. So far, very few studies were conducted on the application of ultrasonication assisted laccase (UAL) catalyzed the degradation of persistent pharmaceuticals [24,29]. In this study, the authors combined the UlS with laccase treatment to overcome the slow degradation rate by enzyme treatment alone.…”

Section: Introductionmentioning

confidence: 99%

Degradation kinetics of chlortetracycline in wastewater using ultrasonication assisted laccase

Pulicharla

Das

Brar

et al. 2018

Chemical Engineering Journal

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Chlortetracycline (CTC) is widely used as a veterinary antibiotic and is considered as a recalcitrant pollutant. In this study, spiked CTC (2 mg L -1 ) in wastewater was degraded using laccase from the white rot fungi, Trametes Versicolor combined with ultrasonication (UlS). Over 60% of CTC was removed in 2h by UlS assisted laccase (UAL) treatment where laccase treatment alone took 2 days to degrade 87% of CTC under similar CTC concentration (2 mg L -1 ), laccase dose (0.5 IU) and pH 6.0 conditions. UAL treatment showed 5.3 folds higher CTC degradation rate compared to laccase alone treatment at pH 6.0. Further, pH optimization of UAL treatment was done and pH 4.5 was found to be optimum wherein 80% of CTC degradation was obtained which is 2.6 folds higher compared to degradation at pH 6.0. The UAL treatment with optimized pH was not only increased CTC degradation efficiency (~80%) but also reduced the degradation time to 2h. The obtained results highlighted the enhanced degradation rate, efficiency and unaltered stability of laccase during UAL treatment which can be used for oxidizing other tetracycline groups of antibiotics. Moreover, laccase and UAL treatments showed similar degradation products and no estrogenic activity.

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“…The treated effluent of some Trace organic contaminants (TrOCs) biodegraded by laccase with mediator ABTS revealed higher toxicity, whereas the effluent highlighted similar toxicity to influent when employing vanillin (VA) or HBT as the mediator (Ashe et al, 2016). As noted above, the TPs of some compounds contain substances harmful to the environment, whereas many studies only focus on parent pollutants removal and neglected their TPs (Becker et al, 2016;Bettin et al, 2019;Sutar & Rathod, 2016). To date, less is known about enzymatic TPs and the reaction mechanisms of some pollutants.…”

Section: Necessitymentioning

confidence: 99%

Roles and applications of enzymes for resistant pollutants removal in wastewater treatment

Feng

Ngo

Guo

et al. 2021

Bioresource Technology

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Resistant pollutants like oil, grease, pharmaceuticals, pesticides, and plastics in wastewater are difficult to be degraded by traditional activated sludge methods. These pollutants are prevalent, posing a great threat to aquatic environments and organisms since they are toxic, resistant to natural biodegradation, and create other serious problems. As a high-efficiency biocatalyst, enzymes are proposed for the treatment of these resistant pollutants. This review focused on the roles and applications of enzymes in wastewater treatment. It discusses the influence of enzyme types and their sources, enzymatic processes in resistant pollutants remediation, identification and ecotoxicity assay of enzymatic transformation products, and typically employed enzymatic wastewater treatment systems.Perspectives on the major challenges and feasible future research directions of enzyme-based wastewater treatment are also proposed.

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Ultrasound assisted enzymatic degradation of diclofenac sodium: Optimization of process parameters and kinetics

Cited by 15 publications

References 35 publications

A review on pharmaceuticals removal from waters by single and combined biological, membrane filtration and ultrasound systems

A review on pharmaceuticals removal from waters by single and combined biological, membrane filtration and ultrasound systems

Degradation kinetics of chlortetracycline in wastewater using ultrasonication assisted laccase

Roles and applications of enzymes for resistant pollutants removal in wastewater treatment

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