Kinetics of photocatalytic removal of imidacloprid from water by advanced oxidation processes with respect to nanotechnology

Abstract In this study, the kinetics of photocatalytic removal of imidacloprid, a systemic chloronicotinoid insecticide, from water using two advanced oxidation systems (ZnO(normal)/H2O2/artificial sunlight and ZnO(nano)/H2O2/artificial sunlight) were investigated. Moreover, the effects of pH, insecticide concentration, catalyst concentration, catalyst particle size, and water type on the photocatalytic removal of imidacloprid were evaluated. Furthermore, total mineralization of imidacloprid under these advanced oxidation systems was evaluated by monitoring the decreases in dissolved organic carbon (DOC) concentrations and formation rate of inorganic ions (Cl− and NO2−) with irradiation time using total organic carbon (TOC) analysis and ion chromatography to confirm the complete detoxification of imidacloprid in water. The degradation rate of imidacloprid was faster under the ZnO(nano)/H2O2/artificial sunlight system than the ZnO(normal)/artificial sunlight system in both pure and river water. The photocatalytic degradation of imidacloprid under both advanced oxidation systems was affected by pH, catalyst concentration, imidacloprid concentration, and water type. Almost complete mineralization of imidacloprid was only achieved in the ZnO(nano)/H2O2/artificial sunlight oxidation system. The photogeneration rate of hydroxyl radicals was higher under the ZnO(nano)/H2O2/artificial sunlight system than the ZnO(normal)/H2O2/artificial sunlight system. Advanced oxidation processes, particularly those using nanosized zinc oxide, can be regarded as an effective photocatalytic method for imidacloprid removal from water.

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Comparative investigation on the removal of methyl orange from aqueous solution using three different advanced oxidation processes

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2020-0243 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Zahia Benredjem ◽

Karima Barbari ◽

Imene Chaabna ◽

Samia Saaidia ◽

Abdelhak Djemel ◽

...

Keyword(s):

Methyl Orange ◽

Current Density ◽

Advanced Oxidation Processes ◽

Degradation Rate ◽

Supporting Electrolyte ◽

Advanced Oxidation ◽

Comparative Investigation ◽

Oxidation Processes ◽

The Comparative Study ◽

Kinetics Of

Abstract The Advanced Oxidation Processes (AOPs) are promising environmentally friendly technologies for the treatment of wastewater containing organic pollutants in general and particularly dyes. The aim of this work is to determine which of the AOP processes based on the Fenton reaction is more effective in degrading the methyl orange (MO) dye. The comparative study of the Fenton, photo-Fenton (PF) and electro-Fenton (EF) processes has shown that electro-Fenton is the most efficient method for oxidizing Methyl Orange. The evolution of organic matter degradation was followed by absorbance (discoloration) and COD (mineralization) measurements. The kinetics of the MO degradation by the electro-Fenton process is very rapid and the OM degradation rate reached 90.87% after 5 min. The influence of some parameters such as the concentration of the catalyst (Fe (II)), the concentration of MO, the current density, the nature and the concentration of supporting electrolyte was investigated. The results showed that the degradation rate increases with the increase in the applied current density and the concentration of the supporting electrolyte. The study of the concentration effect on the rate degradation revealed optimal values for the concentrations 2.10−5 M and 75 mg L−1 of Fe (II) and MO respectively.

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Advanced oxidation processes: flowsheet options for bulk natural organic matter removal

Water Science & Technology Water Supply ◽

10.2166/ws.2004.0068 ◽

2004 ◽

Vol 4 (4) ◽

pp. 113-119 ◽

Cited By ~ 17

Author(s):

C.A. Murray ◽

S.A. Parsons

Keyword(s):

Molecular Weight ◽

Organic Matter ◽

Organic Carbon ◽

Dissolved Organic Carbon ◽

Natural Organic Matter ◽

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Fenton’S Reagent ◽

Fenton's Reagent ◽

Oxidation Processes

Advanced oxidation processes have been reported to have the potential to remove natural organic matter from source waters. Of these Fenton's reagent, photo-Fenton's reagent and titanium dioxide photocatalysis are the three most promising processes. Compared to conventional coagulation/flocculation processes they have higher removal efficiencies in terms of both dissolved organic carbon and UV254 absorbance. Under optimum reaction conditions all three remove over 80% dissolved organic carbon and 0% UV254 absorbance. In addition the enhanced removal of natural organic matter leads to a corresponding reduction in the formation of disinfection by-products following chlorination of the treated water. Advanced oxidation processes give enhanced removal of organic species ranging from low to high molecular weight while coagulation/flocculation is inefficient at removing low molecular weight species. One additional benefit is all three processes produce less residuals compared to conventional coagulation, which is advantageous as the disposal of such residuals normally contributes a large proportion of the costs at water treatment works.

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Comparison of Various Advanced Oxidation Processes for the Degradation of Bisphenol A

Linnaeus Eco-Tech ◽

10.15626/eco-tech.2010.015 ◽

2017 ◽

pp. 147

Author(s):

Naser Jamshidi ◽

Farzad Nezhad Bahadori ◽

Ladan Talebiazar ◽

Ali Akbar Azimi

Keyword(s):

Bisphenol A ◽

Uv Irradiation ◽

Advanced Oxidation Processes ◽

Irradiation Time ◽

Advanced Oxidation ◽

Chemical Oxidation ◽

Photochemical Oxidation ◽

Input Concentration ◽

Oxidation Processes ◽

Ph Range

Today, advanced oxidation processes (AOPs) is considered as a key and effective method for environment preservation from pollutions. In this study , advanced photochemical oxidation processes using O3/H2O2 and O3/H2O2/UV systems were investigated batch photolytic reactor in lab-scale for the degradation of bisphenol A (BPA). In ozone generator source, air, as of the initial instrument feed, changes to ozone after electrical action and reaction. The UV irradiation source was a medium-pressure mercury lamp 300 W that was immerse in the wastewater solution with in 1.5 liter volume reactor. The reaction was influenced by the pH, the input concentration of H2O2, the input concentration of BPA, ozone dosage, chemical oxidation demand (COD) and UV irradiation time. Results showed that at initial bisphenol A concentration of 100 mg/l will completely degrade after 60 minutes by using O3/H2O2 in the pH range from 9.8 to 10 and by adding UV, it will happen in less than 36 minutes in the pH range of 3 to 10. The O3/H2O2/UV process reduced COD to 75 percents.

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The Influence of Photoactive Heterostructures on the Photocatalytic Removal of Dyes and Pharmaceutical Active Compounds: A Mini-Review

Nanomaterials ◽

10.3390/nano10091766 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1766

Author(s):

Alexandru Enesca ◽

Luminita Andronic

Keyword(s):

Organic Pollutants ◽

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Pollutant Concentration ◽

Synthesis Methods ◽

Promising Candidate ◽

Traditional Treatment ◽

Active Compounds ◽

Oxidation Processes ◽

Photocatalytic Removal

The diversification of pollutants type and concentration in wastewater has underlined the importance of finding new alternatives to traditional treatment methods. Advanced oxidation processes (AOPs), among others, are considered as promising candidate to efficiently remove organic pollutants such as dyes or pharmaceutical active compounds (PhACs). The present minireview resumes several recent achievements on the implementation and optimization of photoactive heterostructures used as photocatalysts for dyes and PhACs removal. The paper is focused on various methods of enhancing the heterostructure photocatalytic properties by optimizing parameters such as synthesis methods, composition, crystallinity, morphology, pollutant concentration and light irradiation.

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Degradation of propoxycarbazone-sodium with advanced oxidation processes

Water Science & Technology Water Supply ◽

10.2166/ws.2011.019 ◽

2011 ◽

Vol 11 (1) ◽

pp. 129-134 ◽

Cited By ~ 1

Author(s):

A. Dulov ◽

N. Dulova ◽

Y. Veressinina ◽

M. Trapido

Keyword(s):

Rate Constants ◽

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Fenton Process ◽

Oxidation Processes ◽

First Order ◽

Order Rate ◽

Conversion Time ◽

Pseudo First Order ◽

Kinetics Of

The degradation of propoxycarbazone-sodium, an active component of commercial herbicide, in aqueous solution with ozone, UV photolysis and advanced oxidation processes: O3/UV, O3/UV/H2O2, H2O2/UV, and the Fenton process was studied. All these methods of degradation proved feasible. The kinetics of propoxycarbazone-sodium degradation in water followed the pseudo-first order equation for all studied processes except the Fenton treatment. The application of schemes with ozone demonstrated low pseudo-first order rate constants within the range of 10−4 s−1. Addition of UV radiation to the processes improved the removal of propoxycarbazone-sodium and increased the pseudo-first order rate constants to 10−3 s−1. The Fenton process was the most efficient and resulted in 5 and 60 s of half-life and 90% conversion time of propoxycarbazone-sodium, respectively, at 14 mM H2O2 concentration. UV treatment and the Fenton process may be recommended for practical application in decontamination of water or wastewater.

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Modeling Kinetics of Illuminated and Dark Advanced Oxidation Processes

Journal of Environmental Engineering ◽

10.1061/(asce)0733-9372(1996)122:1(58) ◽

1996 ◽

Vol 122 (1) ◽

pp. 58-62 ◽

Cited By ~ 33

Author(s):

Andrew Hong ◽

Mark E. Zappi ◽

Chiang Hai Kuo ◽

Donald Hill

Keyword(s):

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Oxidation Processes ◽

Kinetics Of

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Elucidating the Elementary Reaction Pathways and Kinetics of Hydroxyl Radical-Induced Acetone Degradation in Aqueous Phase Advanced Oxidation Processes

Environmental Science & Technology ◽

10.1021/acs.est.8b00582 ◽

2018 ◽

Vol 52 (14) ◽

pp. 7763-7774 ◽

Cited By ~ 9

Author(s):

Divya Kamath ◽

Stephen P. Mezyk ◽

Daisuke Minakata

Keyword(s):

Hydroxyl Radical ◽

Aqueous Phase ◽

Advanced Oxidation Processes ◽

Advanced Oxidation ◽

Elementary Reaction ◽

Reaction Pathways ◽

Oxidation Processes ◽

Kinetics Of

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Parameters controlling the advanced oxidation degradation kinetics of nitroglycerin and pentaerythritol tetranitrate

Green Processing and Synthesis ◽

10.1515/gps-2016-0210 ◽

2018 ◽

Vol 7 (1) ◽

pp. 61-67

Author(s):

Do Ngoc Khue ◽

Tran Dai Lam ◽

Dao Duy Hung ◽

Vu Quang Bach ◽

Nguyen Van Anh ◽

...

Keyword(s):

Advanced Oxidation Processes ◽

Degradation Kinetics ◽

Advanced Oxidation ◽

Reaction Rates ◽

Pentaerythritol Tetranitrate ◽

Order Model ◽

Oxidation Processes ◽

First Order ◽

Oxidation Degradation ◽

Kinetics Of

AbstractSeveral advanced oxidation processes have been performed for the decomposition of ester nitrates (ENs), such as nitroglycerine (NG) and pentaerythritol tetranitrate (PETN). The reaction kinetics for removing NG and PETN by some of the advanced oxidation processes (e.g. UV-H2O2, Fenton, UV-Fenton) followed the pseudo-first-order model. The reaction rates in different systems followed the sequence ENs/UV<ENs/H2O2<ENs/UV-H2O2<ENs/Fenton<ENs/UV-Fenton. The effect of various parameters, such as pH, concentration of hydrogen peroxide, and temperature, on the degradation of NG and PETN were studied.

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Kinetics and Mechanistic Studies of Photochemical and Oxidative Stability of Galaxolide

Water ◽

10.3390/w13131813 ◽

2021 ◽

Vol 13 (13) ◽

pp. 1813

Author(s):

Aneta Sokol ◽

Artur Ratkiewicz ◽

Iwona Tomaszewska ◽

Joanna Karpinska

Keyword(s):

Advanced Oxidation Processes ◽

Degradation Products ◽

Advanced Oxidation ◽

Degradation Process ◽

Oh Radicals ◽

Direct Photolysis ◽

Oxidation Processes ◽

First Order Kinetics ◽

Kinetics Of ◽

Oxidative Agents

Studies on kinetics of galaxolide (HHCB) degradation under influence of UV, simulated sunlight and some advanced oxidation processes (H2O2, UV/H2O2, and Vis/H2O2) were conducted. Galaxolide appeared to be a photolabile compound. The first-order kinetics model was assumed for all studied processes. It was observed that basic pH favored HHCB degradation. The influence of natural matrices (river water and artificial sweat) on direct photolysis of HHCB was examined. It was stated that the process of the photodegradation proceeded slower at the presence of each matrix. HHCB lactone was identified using the GC-MS technique. The recorded chromatograms showed that apart from the lactone, other degradation products were formed that we could not identify. In order to deeper understand the HHCB degradation process, DFT calculations were performed. The results pointed out that OH radicals play a key role in HHCB decomposition, which mainly proceeds via H abstractions as well as OH additions. It follows from the calculations that the visible light is sufficient to initiate the advanced oxidation processes (AOPs) under the oxidative conditions, whereas UV irradiation is needed to start decay with no oxidative agents.

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