Kinetic study of the degradation/mineralization of aqueous solutions contaminated with Rosuvastatin drug by Electro-Fenton: Influence of experimental parameters

Beqqal, Nisrine; Yahya, Muna Sh.; Karbane, Miloud El; Guessous, A.; Kacemi, K. El

doi:10.26872/jmes.2017.8.12.464

Cited by 5 publications

(6 citation statements)

References 41 publications

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“…Increasing organic degradation with CD is due to an increase in the amount of hydrogen peroxide generated electrochemically through the electrolysis. When the amount of hydrogen peroxide increases, the hydroxyl radical (•OH) increases to enough amount to react with the organic pollutants that existed in the treated solution, leading to minimize the Phenol concentration [39,40]. Our results agree with the results of other researchers [41,42].…”

Section: Effect Of the CD Of Phenol Concentrationsupporting

confidence: 91%

Kinetics and Energetic Parameters Study of Phenol Removal from Aqueous Solution by Electro-Fenton Advanced Oxidation Using Modified Electrodes with PbO2 and Graphene

Abbas¹,

Abbas²

2022

IJCPE

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The Electro-Fenton oxidation process is one of the essential advanced electrochemical oxidation processes used to treat Phenol and its derivatives in wastewater. The Electro-Fenton oxidation process was carried out at an ambient temperature at different current density (2, 4, 6, 8 mA/cm2) for up to 6 h. Sodium Sulfate at a concentration of 0.05M was used as a supporting electrolyte, and 0.4 mM of Ferrous ion concentration (Fe2+) was used as a catalyst. The electrolyte cell consists of graphite modified by an electrodepositing layer of PbO2 on its surface as anode and carbon fiber modified with Graphene as a cathode. The results indicated that Phenol concentration decreases with an increase in current density, and the minimum Phenol concentration obtained after 6 h of electrolysis at 8 mA/cm2 is equal to 7.82 ppm starting from an initial concentration about 155 ppm. The results obtained from the kinetic study of Phenol oxidation at different current density showed that the reaction followed pseudo first-order kinetics regarding current density. Energetic parameters like specific power consumption and current efficiency were also estimated at different current density. The results showed that an increase in current density caused an increase in the specific power consumption of the process and decreased current efficiency.

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Section: Effect Of the CD Of Phenol Concentrationsupporting

confidence: 91%

Kinetics and Energetic Parameters Study of Phenol Removal from Aqueous Solution by Electro-Fenton Advanced Oxidation Using Modified Electrodes with PbO2 and Graphene

Abbas¹,

Abbas²

2022

IJCPE

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“…During our analysis of the samples, the first 10 minutes of the electrolysis were marked by the gradual disappearance of PRA and ROS and training of aromatic intermediates which in turn gradually disappear during the electrolysis. The optimum conditions for the electrolysis of aqueous solutions of ROS are determined according to the results obtained in the study of the degradation of this statin 17 . The intermediates obtained were identified by HPLC according to the European Pharmacopoeia 7.1 and LC/MS.…”

Section: Identification Of Reaction Intermediatesmentioning

confidence: 99%

“…Previously, a number of advanced oxidation processes (AOP) were evaluated for the disposal of pharmaceuticals in water [14][15][16][17][18] . AOPs are effective methods that generate hydroxyl radicals in situ • OH capable to oxidize organic molecules until their mineralization.…”

Section: Introductionmentioning

confidence: 99%

“…In the present paper, we choose to study the case of PRA of the first generation and ROS of the 3 rd generation as a model of statin known by their large volume production, high consumption, highly toxic and potentially carcinogenic 34,35 . Our primary objectives are to determine the degradation kinetics and efficiency of mineralization of acidic aqueous solutions of PRA by Electro-Fenton process, knowing that this study was already done in the first article for ROS 17 which The decay kinetics of ROS followed pseudo-first order reaction and an optimum current of 300 mA and a catalyst (Fe 3+ ) concentration of 0.2mM were found to be optimal for an effective degradation. The identification of the intermediates and the study of the biodegradability were carried out for both statins.…”

Section: Introductionmentioning

confidence: 99%

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Treatment of statins drug (pravastatin and rosuvastatin) in water by electro-Fenton process: Kinetics of degradation/mineralization and optimization of experimental conditions for a biological post-treatment

Beqqal¹,

Yahya²,

Miloud³

et al. 2019

Mediterr.J.Chem.,

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The treatment of pravastatin and rosuvastatin contaminated water as much as toxic and persistent organic pollutant was carried out by Electro-Fenton method EF. Several experiments were conducted in a cell compartment equipped with a platinum anode and a carbon felt cathode. The effects of several parameters such as the applied current and the catalyst Fe 2+ concentration have been studied. Mineralization aqueous solutions of pravastatin followed by the chemical oxygen demand COD gave a higher degree of reduction of more than 90% for 6 hours of treatment at a current of 100 mA and Fe 2+ concentration of 0.2 mM. The study of the degradation kinetics was followed during electrolysis by HPLC giving a pseudo first order reaction using a current of 100 mA and Fe 2+ concentration of 0.1mM. A number of intermediate products for pravastatin and rosuvastatin have been identified using HPLC and liquid chromatography-mass spectrometry analyses. Biodegradability of the pretreated solutions of two statins by EF was evaluated in order to decide the optimal moment to introduce the biological process. It was given by the ratio BOD 5 /COD which increases from 0 initially to 1.3 after 2 hours for pravastatin and from 0 initially to 1.5 after 3 hours for rosuvastatin as the COD decreases. It implies that EF tends to enhance the biodegradability and could be used as a pre-treatment step for biological treatment.

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“…3or decompose hydrogen peroxide Eq. 4, reducing the production rate of the strong oxidant • OH by the Fenton´s reaction (Beqqal et al, 2017).…”

Section: Effect Of the Mineral Salts Contained In The Groundwater On mentioning

confidence: 99%

Electro Fenton removal of clopyralid in soil washing effluents

et al. 2019

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The removal of a commercial herbicide, based on clopyralid, by means of Electro-Fenton (EF) was studied using a soil washing effluent obtained using synthetic ground water as washing fluid. From the results, it was observed that the degradation and mineralization yields of clopyralid were high, even without the addition of supporting electrolyte. The groundwater could be then used as a sustainable supporting electrolyte. The influence of the minerals constituents, the current and the ferrous ions regeneration was evaluated. The highest hydrogen peroxide production was achieved working at 200 mA but regeneration of ferrous ions was not efficient at this current. Iodide ions were one of the main responsible in the EF efficiency decrease due to their reaction with the produced hydrogen peroxide. Electrochemical study proved that clopyralid was not electroactive and that its degradation was mainly due to radical oxidation. Long duration electrolysis carried out at 200 mA in groundwater provided an improvement of the solution biodegradability after 480 min that can be linked to a significant increase in the carboxylic acids production. These results support the feasibility of applying an EF process in order to carry out a subsequent biological mineralization.

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Kinetic study of the degradation/mineralization of aqueous solutions contaminated with Rosuvastatin drug by Electro-Fenton: Influence of experimental parameters

Cited by 5 publications

References 41 publications

Kinetics and Energetic Parameters Study of Phenol Removal from Aqueous Solution by Electro-Fenton Advanced Oxidation Using Modified Electrodes with PbO2 and Graphene

Kinetics and Energetic Parameters Study of Phenol Removal from Aqueous Solution by Electro-Fenton Advanced Oxidation Using Modified Electrodes with PbO2 and Graphene

Treatment of statins drug (pravastatin and rosuvastatin) in water by electro-Fenton process: Kinetics of degradation/mineralization and optimization of experimental conditions for a biological post-treatment

Electro Fenton removal of clopyralid in soil washing effluents

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