The combination of photocatalysis process (UV/TiO<sub>2</sub>(P25) and UV/ZnO) with activated sludge culture for the degradation of sulfamethazine

Aissani, Taous; Yahiaoui, Idris; Boudrahem, Farοuk; Chikh, Sabrina Ait; Aissani‐Benissad, Farida; Amrane, Abdeltif

doi:10.1080/01496395.2018.1445109

Cited by 33 publications

(16 citation statements)

References 49 publications

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“…However, The removal of dyes and recalcitrant pollutants from wastewater using these methods was not as effective as expected; in addition, most of these methods are nondestructive, since they only consist in a transfer of organic compounds from water to another phase, thus causing secondary pollution [28][29][30][31][32]. For the degradation of persistent organic compounds contained in wastewater, several studies recommend integrated processes, especially the coupling of AOPs and biological treatment [28][29][30][31][32][33][34]. The main objectives of this study are: i) to use a heat attachment method to immobilize ZnO on glass plate (9 cm × 35 cm).…”

Section: Introductionmentioning

confidence: 99%

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Aissani

Yahiaoui

Boudrahem

et al. 2020

Reac Kinet Mech Cat

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In this paper, the degradation of sulfamethazine (SMT) was performed using of photocatalytic process in the presence of ZnO catalyst immobilized on glass plate (on ZnO/glass plate) under UV light. The ZnO/glass plate was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectra; the results of the characterization demonstrated that the properties of ZnO/glass plate were maintained unmodified. The adsorption and the photolysis tests revealed the absence of adsorption of SMT onto ZnO/glass plate and the absence of direct photolysis of SMT. The effect of the initial solution pH, the flow rate and the initial concentration of SMT on the photocatalytic process was studied and optimized by using central composite design (CCD). The model equation obtained led to a classification of these parameters based on their level of significance. The results suggested that the most influential factor was the initial concentration of SMT (x 2 ), which had the strongest effect on the response (-11.6) and the negative sign of the coefficient suggested that the degradation of SMT decreased for increasing initial SMT concentration. It was followed by the flow rate with positive effect on the yield of SMT degradation (+2.06). The model also demonstrated the absence of pH effect in the studied interval and that the strongest interaction was between the pH and the flow rate. The kinetic of degradation of the SMT can be described by a pseudo A c c e p t e d M a n u s c r i p t 2first order kinetic model for 10 and 50 mg/L of SMT; while the kinetic of degradation was described by a pseudo-second-order kinetic model for the highest initial amount, [SMT] 0 =100 mg/L. The optimal values of the solution pH, the flow rate and the initial concentration of SMT were 6, 0.56 L/min and 11 mg/L respectively. Under these conditions the removal efficiency of SMT was 96 % and the BOD 5 /COD ratio increased from 0 to 0.20 after 5h of irradiation time.

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Section: Introductionmentioning

confidence: 99%

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Aissani

Yahiaoui

Boudrahem

et al. 2020

Reac Kinet Mech Cat

Self Cite

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“…The rate cοnstants were calculated by minimizing the D functiοn Eq. (11) using the sοlver in Micrοsοft Excel [6,15].…”

Section: Kinetic Studymentioning

confidence: 99%

“…To overcome these disadvantages, Advanced Oxidation processes (AOPs) based on the generation of highly oxidative hydroxyl radical (•OH), can be considered for the removal of non-biodegradable pollutants from wastewater [13,14]. Aissani et al [15] have studied the degradation of sulfamethazine by a photocatalytic process followed by a biological treatment; they obtained 58% COD removal.…”

Section: Introductionmentioning

confidence: 99%

Kinetic degradation of amoxicillin by using the electro-Fenton process in the presence of a graphite rods from used batteries

Kadji

Yahiaoui

Garti

et al. 2021

Chinese Journal of Chemical Engineering

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This study reports the removal of amoxicillin (AMX) in aqueous media using the electro-Fenton process in the presence of a graphite cathode recovered from used batteries. The impact of the relevant parameters on the electro-Fenton process, namely the applied current intensity, the temperature, the initial concentration of AMX and the initial concentration of ferrous ions were investigated. The results showed that the optimal values were: I= 600 mA, T= 25°C, [AMX] 0 = 0.082 mmol•L −1 and [Fe 2+ ]= 1 mmol•L −1 , leading to 95% degradation and 74% mineralization. The model parameters of AMX mineralization were determined using nonlinear methods, showing that it follows a pseudo-second-order kinetic. The Energy consumption (EC) calculated under the optimal values was found to be 0.79 kW•h −1 •g −1 , which was of the same order of magnitude of those reported in other findings; while it is noteworthy that the electrodes used in our study are of a lower cost.

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“…Furthermore, at high catalyst loading, it is hard to maintain the homogeneity of the solution due to particles agglomeration, which diminishes the quantity of active sites [26]. e photocorrosion of ZnO is complete at pH lower than 4 and at pH higher than 10, and no photocorrosion of ZnO takes place at pH � 7 [34]. Shankaraiah et al reported that the UV/TiO 2 process removed 61 to 90% of norfloxacin [35].…”

Section: Effect Of the Catalyst Dosesmentioning

confidence: 99%

“…Another study showed that TiO 2 photocatalysis was the most effective method for removing β-lactam antibiotics [36]. Aissani et al indicated that the UV/TiO 2 process removed 41% of sulfamethazine ( e combination of photocatalysis process [34].…”

Section: Effect Of the Catalyst Dosesmentioning

confidence: 99%

Comparison of the Efficiency of Ultraviolet/Zinc Oxide (UV/ZnO) and Ozone/Zinc Oxide (O3/ZnO) Techniques as Advanced Oxidation Processes in the Removal of Trimethoprim from Aqueous Solutions

Taie

Fadaei

Sadeghi

et al. 2021

International Journal of Chemical Engineering

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Nowadays, advanced oxidation processes, particularly photocatalyst process and catalytic ozonation by ZnO nanoparticles, are the most efficient method of eliminating pharmaceuticals. The purpose of this study was to compare the efficiency of ultraviolet/zinc oxide (UV/ZnO) and ozone/zinc oxide (O3/ZnO) techniques as advanced oxidation processes in the removal of trimethoprim (TMP) from aqueous solutions. The process consisted of 0.6 g/L of ozone (O3), pH = 7.5 ± 0.5, TMP with a concentration of 0.5–5 mg/L, ZnO with a dose of 50–500 mg/L, 5–30 min reaction time, and 30–180 min contact time with UV radiation (6 W, 256 nm) in a continuous reactor. The high removal efficiency was achieved after 25 minutes when ZnO is used in 1 mg/L TMP under an operational condition at pH 7.5. When the concentration of the pollutant increased from 0.5 to 1, the average removal efficiency increased from 78% to 94%, and then, it remained almost constant. An increase in the reaction time from 5 to 25 minutes will cause the average elimination to increase from 84% to 94%. The results showed that the efficiency of O3/ZnO process in the removal of TMP was 94%, while the removal efficiency of UV/ZnO process was 91%. The findings exhibited that the kinetic study followed the second-order kinetics, both processes. With regard to the results, the photocatalyst process and catalytic ozonation by ZnO nanoparticles can make acceptable levels for an efficient posttreatment. Finally, this combined system is proven to be a technically effective method for treating antibiotic contaminants.

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The combination of photocatalysis process (UV/TiO₂(P25) and UV/ZnO) with activated sludge culture for the degradation of sulfamethazine

Cited by 33 publications

References 49 publications

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Kinetic degradation of amoxicillin by using the electro-Fenton process in the presence of a graphite rods from used batteries

Comparison of the Efficiency of Ultraviolet/Zinc Oxide (UV/ZnO) and Ozone/Zinc Oxide (O3/ZnO) Techniques as Advanced Oxidation Processes in the Removal of Trimethoprim from Aqueous Solutions

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The combination of photocatalysis process (UV/TiO2(P25) and UV/ZnO) with activated sludge culture for the degradation of sulfamethazine

Cited by 33 publications

References 49 publications

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Kinetic degradation of amoxicillin by using the electro-Fenton process in the presence of a graphite rods from used batteries

Comparison of the Efficiency of Ultraviolet/Zinc Oxide (UV/ZnO) and Ozone/Zinc Oxide (O3/ZnO) Techniques as Advanced Oxidation Processes in the Removal of Trimethoprim from Aqueous Solutions

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The combination of photocatalysis process (UV/TiO₂(P25) and UV/ZnO) with activated sludge culture for the degradation of sulfamethazine