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Information Journal Paper

Title

DEGRADATION OF 4-NITROPHENOL FROM INDUSTERIAL WASTEWATER BY NANO CATALYTIC OZONATION

Pages

  160-167

Keywords

CHEMICAL OXYGEN DEMAND (COD) 
TIO2 NANO CATALYST 

Abstract

 In this project, a nano catalyst (TiO2) and ozone combined with each other and they were used for the removal of 4-nitrophenol (4NP) in INDUSTERIAL WASTEWATER. The effect of some operational parameters such as initial pH (3-9), the concentration of pollutant (20-80 mg/L), and amount of TiO2 were investigated. In O3/TiO2 process, the anion radical formed before the production of hydroxyl radical. These results were different from the Ozonation process alone, in which high pH had a positive effect on the DEGRADATION of 4NP, because hydroxyl radicals was formed.In ozonation and O3/TiO2 processes, about 89 and 97% of 4NP were degraded respectively, at optimum pH and 60 min of reaction. In catalytic ozonation the DEGRADATION rate of 4NP was higher at weak acidic pH conditions (pH=5). The removal of chemical oxygen demand (COD) was increased from 49% (only ozonation) to 74% (O3/TiO2) at 90 min of reaction. The kinetic of DEGRADATION was pseudo-first-order and DEGRADATION and mineralization of 4NP were estimated by HPLC and COD tests, respectively.

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    Cite

    APA: Copy

    SHOKRI, AREF. (2016). DEGRADATION OF 4-NITROPHENOL FROM INDUSTERIAL WASTEWATER BY NANO CATALYTIC OZONATION. INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND), 7(2), 160-167. SID. https://sid.ir/paper/322309/en

    Vancouver: Copy

    SHOKRI AREF. DEGRADATION OF 4-NITROPHENOL FROM INDUSTERIAL WASTEWATER BY NANO CATALYTIC OZONATION. INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND)[Internet]. 2016;7(2):160-167. Available from: https://sid.ir/paper/322309/en

    IEEE: Copy

    AREF SHOKRI, “DEGRADATION OF 4-NITROPHENOL FROM INDUSTERIAL WASTEWATER BY NANO CATALYTIC OZONATION,” INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND), vol. 7, no. 2, pp. 160–167, 2016, [Online]. Available: https://sid.ir/paper/322309/en

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