Removal of carbamazepine from MBR effluent by electrochemical oxidation (EO) using a Ti/Ta2O5-SnO2 electrode

Gurung, Khum; Ncibi, Mohamed Chaker; Shestakova, Marina Vladimirovna; Sillanpää, Mika

doi:10.1016/j.apcatb.2017.09.017

Cited by 114 publications

(44 citation statements)

References 36 publications

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“…Energy consumption (EC), a common index in the electrochemical oxidation field (Gurung et al, 2018;Wang et al, 2014), was used to measure the energy utilization efficiency of a process. In this study, only the energy consumed by UV lamps was taken into account while other consumption was not included.…”

Section: Energy Utilization During Inactivationmentioning

confidence: 99%

Inactivation of airborne bacteria using different UV sources: Performance modeling, energy utilization, and endotoxin degradation

Wang

Zhang

2019

Science of The Total Environment

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Airborne bacteria-containing bioaerosols have attracted increased research attention on account of their adverse effects on human health. Ultraviolet germicidal irradiation (UVGI) is an effective method to inactivate airborne microorganisms. The present study models and compares the inactivation performance of three UV sources in the UVGI for aerosolized Escherichia coli. Inactivation efficiency of 0.5, 2.2 and 3.1 logarithmic order was obtained at an exposure UV dose of 370 J/m 3 under UVA (365 nm), UVC (254 nm) and UVD (185 nm) sources, respectively. A Beer-Lambert law-based model was developed and validated to compare the inactivation performances of the UV sources, and modeling enabled prediction of inactivation efficiency and analysis of the sensitivity of several parameters. Low influent E. coli concentrations and high UV doses resulted in high energy consumption (EC). The change in airborne endotoxin concentration during UV inactivation was analyzed, and UVC and UVA irradiation showed no marked effect on endotoxin degradation. By contrast, both free and bound endotoxins could be removed by UVD treatment, which is attributed to the ozone generated by the UVD source. The results of this study can provide a better understanding of the air disinfection and airborne endotoxin removal processes.

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Section: Energy Utilization During Inactivationmentioning

confidence: 99%

Inactivation of airborne bacteria using different UV sources: Performance modeling, energy utilization, and endotoxin degradation

Wang

Zhang

2019

Science of The Total Environment

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“…Carbamazepine (CBZ) is an antiepileptic drug and one of the most persistent pharmaceuticals in the ecosystem. This drug had been found in various surface water, at a concentration more than other pharmaceutical drugs (Gurung et al 2018;Li et al 2015;Yang et al 2016;Baghdadi et al 2016;Liu et al 2018). CBZ could endure intact after 8-10 years without exposure to adsorption or to degradation due to its high resistance to photodegradation and biodegradation (Samara et al 2016;Gurung et al 2018;Rajendran and Sen 2018).…”

Section: Introductionmentioning

confidence: 99%

“…This drug had been found in various surface water, at a concentration more than other pharmaceutical drugs (Gurung et al 2018;Li et al 2015;Yang et al 2016;Baghdadi et al 2016;Liu et al 2018). CBZ could endure intact after 8-10 years without exposure to adsorption or to degradation due to its high resistance to photodegradation and biodegradation (Samara et al 2016;Gurung et al 2018;Rajendran and Sen 2018). Annual global consumption of CBZ is more than 1000 tons and about 28% of it is finished at wastewater treatment plants as unmetabolized forms (Gurung et al 2018;Domínguez et al 2010;García-Gómez et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Abdelaziz¹,

Farag

Abdel‐Gawad

2019

Int J Environ Res

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Green synthesis of nanoparticles is an eco-friendly treatment technique. Bimetallic nano zero-valent Fe/Cu was successfully prepared by green synthesis by Ficus Benjamina leaves (FB-ZVI/Cu). The nanoscale FB-ZVI/Cu was characterized by scanning electron microscope, Fourier transform infrared spectroscopy, and dispersive X-ray spectroscopy. The characterization revealed that synthesis and presence of iron-copper nanoparticles and biomolecules which could help in capping the bimetallic nanoparticles. Subsequently, nanoscale zero-valent Fe/Cu particles were used to remove carbamazepine from the aqueous medium under varying experimental conditions, including pH, initial carbamazepine concentration, Fe/CuNPs dose, stirring rate, and contact time. The removal efficiency of carbamazepine reached 95% under the condition of dose 0.4 g L −1 , time 20 min, and pH 5. The results were analyzed according to the Freundlich and Langmuir adsorption isotherms. The adsorption data are more appropriate by the Langmuir adsorption model (R 2 = 0.998) with q max = 26.15 mg g −1. Overall, FB-nZVFe/Cu is a promising green substance to remove carbamazepine from aqueous solutions. The effect of different operating parameters was investigated using linear regression analysis, they were found to account for more than 97% of the variables affecting the removal process. Article Highlights • Bimetallic nZVFe/Cu was synthesized using the Ficus Benjamina leaves' extracts. • Nanoparticles were characterized by SEM, EDAX, and FTIR. • The green-synthesized FB-nZVFe/Cu nanoparticles can remove carbamazepine from aqueous solutions. • Removing mechanism based on adsorption and reduction is proposed. • A high removal percentage of carbamazepine was 95%. • Lower FB-nZVI/Cu PZC values.

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“…It is marginally soluble in water (~200 mg L −1 ) which allows the study of a range of concentrations, and lets recalcitrant be removed. Carbamazepine can remain untransformed and pass through all conventional water treatment processes [34,35] and advanced processes such as membrane bioreactors [36]. Advanced oxidation processes (AOP) can be used to break down and transform carbamazepine [37,38]; however, the formation of unknown byproducts has been a concern.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

Cai

Larese-Casanova

2020

Nanomaterials

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Magnetic carbonaceous nanomaterials are needed in water treatment applications because they can offer both carbon surfaces for sorption of organic pollutants and ease of material magnetic retrieval for regeneration and reuse. In this study, we employed a facile one-step method to synthesize a black carbon-magnetite composite (BC-Mag) by high-temperature annealing of black carbon and hematite. The nanocomposite was easily dispersed and stable in water owing to the presence of negatively charged oxygen surface functional groups. Sorption kinetics with dissolved carbamazepine showed a rapid initial uptake with equilibrium achieved within only minutes. The sorption extent can be described with the Freundlich model, and surface area normalized sorption affinity was an order of magnitude greater than conventional granular activated carbon. The sorption extent of neutral carbamazepine remained constant between pH 2–10 while surface zeta potential decreased. BC-Mag can be reused for the sorption of carbamazepine up to six times without significant loss of the sorption extent.

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Removal of carbamazepine from MBR effluent by electrochemical oxidation (EO) using a Ti/Ta2O5-SnO2 electrode

Cited by 114 publications

References 36 publications

Inactivation of airborne bacteria using different UV sources: Performance modeling, energy utilization, and endotoxin degradation

Inactivation of airborne bacteria using different UV sources: Performance modeling, energy utilization, and endotoxin degradation

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

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