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    Efficacious Degradation of 2,4-Dichlorophenoxyacetic Acid by UV&#x2013;H<sub>2</sub>O<sub>2</sub> Advanced Oxidation and Optimization of Process Parameters Using Response Surface Methodology

    Source: Journal of Hazardous, Toxic, and Radioactive Waste:;2024:;Volume ( 028 ):;issue: 003::page 04024012-1
    Author:
    Arijit Ghosh
    ,
    Asok Adak
    ,
    Bijoli Mondal
    ,
    Najmul Haque Barbhuiya
    ,
    Indrasis Das
    DOI: 10.1061/JHTRBP.HZENG-1343
    Publisher: ASCE
    Abstract: The concentration of persistent organic compounds, including pesticides, in aquatic environments is gradually increasing due to industrial discharge and uncontrolled runoff from agricultural fields. The advanced oxidation process is considered the most effective treatment method for the mineralization of persistent compounds. This research focused on the degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide by a homogeneous process involving ultraviolet irradiation and H2O2 (UV–H2O2) and utilized response surface methodology (RSM) to analyzed influences of key factors involved in processes like 2,4-D concentration, H2O2 dose, pH, and nitrate amount in wastewater. Results showed that 90% of the 2,4-D herbicide was degraded within 5 min of UV-C radiation (253.7 nm wavelength) corresponding to the peroxide dose of 2 mol H2O2/mol 2,4-D at pH 5 and a nitrate concentration of 0.25 mM. A polynomial quadratic equation was developed to envisage both time- and fluence-based rate constants. All process parameters were found to significantly affect the degradation of the herbicide. Results indicated that an increase in initial 2,4-D and nitrate concentration in solution decreases the 2,4-D degradation rate. Higher H2O2 dosages and pH levels indicated an intensification in the rate constant up to an optimum value. Further, an increase in H2O2 dosage and pH resulted in a decrease in degradation rate. Further, the optimum conditions for 2,4-D degradation by the UV–H2O2 process were estimated. The findings of the present work will help to design the treatment process in real field conditions with variable water matrices.
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      Efficacious Degradation of 2,4-Dichlorophenoxyacetic Acid by UV&#x2013;H<sub>2</sub>O<sub>2</sub> Advanced Oxidation and Optimization of Process Parameters Using Response Surface Methodology

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4297681
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    contributor authorArijit Ghosh
    contributor authorAsok Adak
    contributor authorBijoli Mondal
    contributor authorNajmul Haque Barbhuiya
    contributor authorIndrasis Das
    date accessioned2024-04-27T22:51:30Z
    date available2024-04-27T22:51:30Z
    date issued2024/07/01
    identifier other10.1061-JHTRBP.HZENG-1343.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4297681
    description abstractThe concentration of persistent organic compounds, including pesticides, in aquatic environments is gradually increasing due to industrial discharge and uncontrolled runoff from agricultural fields. The advanced oxidation process is considered the most effective treatment method for the mineralization of persistent compounds. This research focused on the degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide by a homogeneous process involving ultraviolet irradiation and H2O2 (UV–H2O2) and utilized response surface methodology (RSM) to analyzed influences of key factors involved in processes like 2,4-D concentration, H2O2 dose, pH, and nitrate amount in wastewater. Results showed that 90% of the 2,4-D herbicide was degraded within 5 min of UV-C radiation (253.7 nm wavelength) corresponding to the peroxide dose of 2 mol H2O2/mol 2,4-D at pH 5 and a nitrate concentration of 0.25 mM. A polynomial quadratic equation was developed to envisage both time- and fluence-based rate constants. All process parameters were found to significantly affect the degradation of the herbicide. Results indicated that an increase in initial 2,4-D and nitrate concentration in solution decreases the 2,4-D degradation rate. Higher H2O2 dosages and pH levels indicated an intensification in the rate constant up to an optimum value. Further, an increase in H2O2 dosage and pH resulted in a decrease in degradation rate. Further, the optimum conditions for 2,4-D degradation by the UV–H2O2 process were estimated. The findings of the present work will help to design the treatment process in real field conditions with variable water matrices.
    publisherASCE
    titleEfficacious Degradation of 2,4-Dichlorophenoxyacetic Acid by UV–H2O2 Advanced Oxidation and Optimization of Process Parameters Using Response Surface Methodology
    typeJournal Article
    journal volume28
    journal issue3
    journal titleJournal of Hazardous, Toxic, and Radioactive Waste
    identifier doi10.1061/JHTRBP.HZENG-1343
    journal fristpage04024012-1
    journal lastpage04024012-7
    page7
    treeJournal of Hazardous, Toxic, and Radioactive Waste:;2024:;Volume ( 028 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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