Photocatalytic degradation of methyl <i>tert</i>‐butyl ether (MTBE) in contaminated water by ZnO nanoparticles

Eslami, Akbar; Nasseri, Simin; Yadollahi, Bahram; Mesdaghinia, Alireza; Vaezi, F; Nabizadeh, Ramin; Nazmara, Shahrokh

doi:10.1002/jctb.1919

Cited by 47 publications

(29 citation statements)

References 23 publications

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“…In fact, ZnO is also an important semiconductor photocatalyst, because the wide direct band gap (3.37 eV) of ZnO is almost the same as that of TiO 2 (3.2 eV), and its photodegradation mechanism is similar to that of TiO 2 [2]. Despite the positive attributes of ZnO photocatalyst, however, there are some drawbacks associated with its use: (i) charge carrier recombination occurs very fast [3] and (ii) the large band gap does not allow the utilization of visible light [4]. One of the ways to overcome these problems is to modify ZnO by addition of another semiconductor.…”

Section: Introductionmentioning

confidence: 94%

α-Fe2O3 modified ZnO flower-like microstructures with enhanced photocatalytic performance for pentachlorophenol degradation

Xie

Zhang

Hao

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 94%

α-Fe2O3 modified ZnO flower-like microstructures with enhanced photocatalytic performance for pentachlorophenol degradation

Xie

Zhang

Hao

et al. 2015

Ceramics International

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“…Among these methods, the advanced oxidation process (AOP) seems to be more practical than other methods such as activated carbon adsorption, reverse osmosis, and air stripping. Biological treatment is applied for wastewater-containing biodegradable substances and non-toxic materials [10,11]. AOPs such as ozonation, UV/H 2 O 2 , UV/O 3 , Fe 2+ /H 2 O 2 , and UV/O 3 /H 2 O 2 are widely applied for the degradation of organic compounds in industrial wastewater and groundwater [12].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Oxidative degradation of clindamycin in aqueous solution using nanoscale zero-valent iron/H2O2/US

Gholami

Rahmani

et al. 2016

Desalination and Water Treatment

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In this study, we investigated clindamycin (CLM) removal efficiency by using nanoscale zero-valent iron (nZVI) particles in the presence of hydrogen peroxide and sonolysis process. Laboratory experiments were performed at 21 ± 2˚C. Also, the effects of initial CLM concentration (45, 80, and 100 mg/L), the molar ratio of H 2 O 2 (0.1, 0.5, and 1 mM), nZVI (0.06, 0.1, and 0.2 g/L), pH (3, 7, and 10), in the presence of ultrasonic waves (35 and 130 kHz with 500 W power) were studied. The results demonstrated that the sonolysis process combined with nZVI and H 2 O 2 in nZVI/H 2 O 2 /US system improved the degradation efficiency. Results indicate that the CLM degradation rate increased with decreasing pH and increasing contact time, temperature, nZVI concentration (0.2 g/L), H 2 O 2 concentration (to 180 mM), and ultrasound frequency (130 kHz/500 W). The optimal concentration of the H 2 O 2 , according to the extent of the Å OH scavenging reaction with these reagents, was demonstrated for CLM removal.

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“…HRT is another important parameter for determining the efficiency of the absorption process. Several studies have been carried out on the removal of different pollutants from water or wastewater using ZnO nanoparticles [35,38,45,46], with a different HRTs, which shows that this parameter is related to the type of pollutant. Figure 3c shows the effect of HRT on the removal efficiency of antibiotics with ZnO nanoparticles.…”

Section: Zno Nanoparticlesmentioning

confidence: 99%

Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles

Talaiekhozani¹,

Joudaki²,

Banisharif

et al. 2020

IJERPH

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Antibiotics are resistant to biodegradation, and their removal by biological processes is difficult. The purpose of this study was to investigate the removal of azithromycin from water using ultraviolet radiation (UV), Fe (VI) oxidation process and ZnO nanoparticles. The effect of different parameters such as pH, temperature, hydraulic retention time (HRT), the concentration of Fe (VI) and ZnO nanoparticles and UV intensity on the removal of azithromycin from water was investigated. The optimal conditions for the removal of azithromycin were a pH of 2, a temperature of 25 • C, a HRT of 15 min, and a ratio of ZnO nanoparticles to the initial concentration of azithromycin (A/P) of 0.00009 which was fitted by Langmuir isotherm. In addition, the optimal conditions for the removal of azithromycin using UV radiation were a pH of 7, a temperature of 65 • C, a HRT of 60 min, and UV radiation power of 163 mW/cm 2 . For the Fe (VI) oxidation process, the optimal conditions were a pH of 2, a temperature of 50 • C and a HRT of 20 min. Also, the optimal ratio of Fe (VI) to the initial concentration of antibiotic was between 0.011 and 0.012. The results of this study showed that the Fe (VI) oxidation process, UV radiation, and ZnO nanoparticles were efficient methods for the removal of azithromycin from water.

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Photocatalytic degradation of methyl tert‐butyl ether (MTBE) in contaminated water by ZnO nanoparticles

Cited by 47 publications

References 23 publications

α-Fe2O3 modified ZnO flower-like microstructures with enhanced photocatalytic performance for pentachlorophenol degradation

α-Fe2O3 modified ZnO flower-like microstructures with enhanced photocatalytic performance for pentachlorophenol degradation

Oxidative degradation of clindamycin in aqueous solution using nanoscale zero-valent iron/H2O2/US

Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles

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