Wet Air Oxidation

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Songbo He - One of the best experts on this subject based on the ideXlab platform.

  • the degradation of isophorone by catalytic Wet Air Oxidation on ru tizro4
    Journal of Hazardous Materials, 2013
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO4 was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P <= 0.01) by reaction time, temperature and their interactions, and affected (P <= 0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO4 catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO4 catalyst. Finally, the degradation pathway of Isophorone in catalytic Wet Air Oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO4 catalyst had a good stability. (c) 2012 Elsevier B.V. All rights reserved.

  • the degradation of isophorone by catalytic Wet Air Oxidation on ru tizro4
    Journal of Hazardous Materials, 2013
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO4 was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P <= 0.01) by reaction time, temperature and their interactions, and affected (P <= 0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO4 catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO4 catalyst. Finally, the degradation pathway of Isophorone in catalytic Wet Air Oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO4 catalyst had a good stability. (c) 2012 Elsevier B.V. All rights reserved.

  • The degradation of Isophorone by catalytic Wet Air Oxidation on Ru/TiZrO4
    Journal of Hazardous Materials, 2013
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO4 was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P

  • The degradation of Isophorone by catalytic Wet Air Oxidation on Ru/TiZrO4.
    Journal of hazardous materials, 2012
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO(4) was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P≤0.01) by reaction time, temperature and their interactions, and affected (P≤0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO(4) catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO(4) catalyst. Finally, the degradation pathway of Isophorone in catalytic Wet Air Oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO(4) catalyst had a good stability.

Xianru Li - One of the best experts on this subject based on the ideXlab platform.

  • the degradation of isophorone by catalytic Wet Air Oxidation on ru tizro4
    Journal of Hazardous Materials, 2013
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO4 was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P <= 0.01) by reaction time, temperature and their interactions, and affected (P <= 0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO4 catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO4 catalyst. Finally, the degradation pathway of Isophorone in catalytic Wet Air Oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO4 catalyst had a good stability. (c) 2012 Elsevier B.V. All rights reserved.

  • the degradation of isophorone by catalytic Wet Air Oxidation on ru tizro4
    Journal of Hazardous Materials, 2013
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO4 was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P <= 0.01) by reaction time, temperature and their interactions, and affected (P <= 0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO4 catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO4 catalyst. Finally, the degradation pathway of Isophorone in catalytic Wet Air Oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO4 catalyst had a good stability. (c) 2012 Elsevier B.V. All rights reserved.

  • The degradation of Isophorone by catalytic Wet Air Oxidation on Ru/TiZrO4
    Journal of Hazardous Materials, 2013
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO4 was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P

  • The degradation of Isophorone by catalytic Wet Air Oxidation on Ru/TiZrO4.
    Journal of hazardous materials, 2012
    Co-Authors: Xianru Li, Songbo He
    Abstract:

    The catalyst Ru/TiZrO(4) was applied in the degradation of Isophorone by catalytic Wet Air Oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic Wet Air Oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P≤0.01) by reaction time, temperature and their interactions, and affected (P≤0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO(4) catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO(4) catalyst. Finally, the degradation pathway of Isophorone in catalytic Wet Air Oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO(4) catalyst had a good stability.

Tingting Chen - One of the best experts on this subject based on the ideXlab platform.

  • Progress of catalytic Wet Air Oxidation technology
    Arabian Journal of Chemistry, 2016
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    Abstract Catalytic Wet Air Oxidation (CWAO) is one of the most economical and environmental-friendly advanced Oxidation process for high strength, toxic, hazardous and non-biodegradable contaminants under milder conditions, which is developed on the basic of Wet Air Oxidation. Various heterogeneous catalysts including noble metals and metal oxides have been extensively studied to enhance the efficiency of CWAO. The advances in the research on wastewater treatment by CWAO process are summarized in aspects of reaction mechanism investigation, reaction kinetics study and catalyst development. It is pointed out that the preparation of active and stable catalysts, the investigation on reaction mechanisms and the study on reaction kinetics models are very important for the promotion of CWAO application.

  • Wet Air Oxidation of Oily Sludge
    International Journal of Green Energy, 2013
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen, Huaiyuan Wang
    Abstract:

    The article is inclined to report experimental results performed in a batch reactor on the Wet Air Oxidation of oily sludge. It is shown that increasing the reaction temperature can improve chemical oxygen demand (COD) removal significantly, increasing O2 excess (OE), initial concentration of oily sludge and prolonging reaction time can help to improve the chemical oxygen demand (COD) removal. COD removal is 96.15% under the optimal condition. It is concluded that Wet Air Oxidation is an effective process for removing organic compounds from oily sludge. The intermediate product such as acetic acid (CH3COOH), carbon monoxide (CO), and the final product such as carbon dioxide (CO2) is analyzed by liquid chromatography and gas chromatography in the experiment.

  • Pretreatment of oily sludge by Wet Air Oxidation
    Journal of the Energy Institute, 2012
    Co-Authors: Guolin Jing, Mingming Luan, Chunjie Han, Tingting Chen
    Abstract:

    The pretreatment of oily sludge by Wet Air Oxidation (WAO) technique was investigated. The effect of reaction parameters such as temperature, initial chemical oxygen demand (COD), residence time, catalyst type, concentration of catalyst and O2 excess on the COD removal rate was investigated. The results showed that oily sludge had a high COD removal rate by WAO. Adding the catalyst significantly improved the COD removal rate. Homogeneous catalyst, Mn2+, showed a significant removal rate for pollutants. The COD removal rate was 96·8% by catalytic Wet Air Oxidation (CWAO) over Mn2+ catalyst. The results indicated that the CWAO was an effective pretreatment method for the oily sludge.

  • Effect of Na2CO3 on the pre-treatment of oily sludge using Wet Air Oxidation
    International Journal of Environmental Technology and Management, 2012
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    In this study, pretreatment of oily sludge, was carried out by Wet Air Oxidation (WAO) process. Experiments were conducted to see the effects of temperature, the initial COD, residence time, concentration of catalyst and OE (O2 excess) on the Oxidation of the oily sludge. The results showed that in the WAO 88.4% Chemical Oxygen Demand (COD) was achieved after 9min. COD removal was 92.7% in the Catalytic Wet Air Oxidation (CWAO) over Na2CO3 catalyst. The results proved that the CWAO was an effective pre-treatment method for the oily sludge.

  • Wet Air Oxidation of oily sludge using Ni2+ catalyst
    Environmental Progress & Sustainable Energy, 2011
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    This work studied the feasibility of treating oily sludge by means of Wet Air Oxidation (WAO) at high temperatures. The effect of the operating conditions on COD removal of the oily sludge, including temperature, the initial COD of the oily sludge, residence time, concentration of catalyst, and O2 excess (OE), was studied. WAO has been proved to be a very efficient technology for the treatment of those residual currents, resulting in destruction efficiencies of greater than 80% of initial COD. Adding a catalyst significantly improved the COD removal. Homogenous catalyst, Ni2+, showed effective removal for pollutants. COD removal was 97.8% in the catalytic Wet Air Oxidation (CWAO) over Ni2+ catalyst. The results proved that the CWAO was an effective pretreatment method for the oily sludge. © 2011 American Institute of Chemical Engineers Environ Prog, 32: 99–102, 2013.

Guolin Jing - One of the best experts on this subject based on the ideXlab platform.

  • Treatment of refractory organic pollutants in industrial wastewater by Wet Air Oxidation
    Arabian Journal of Chemistry, 2017
    Co-Authors: Mingming Luan, Guolin Jing, Yongjian Piao, Debin Liu, Lifeng Jin
    Abstract:

    Abstract Wet Air Oxidation (WAO) is one of the most economical and environmentally-friendly advanced Oxidation processes. It makes a promising technology for the treatment of refractory organic pollutants in industrial wastewaters. In Wet Air Oxidation aqueous waste is oxidized in the liquid phase at high temperatures (125–320 °C) and pressures (0.5–20 MPa) in the presence of an oxygen-containing gas (usually Air). The advantages of the process include low operating costs and minimal Air pollution discharges. The present review is concerned about the literature published in the treatment of refractory organic pollutants in industrial wastewaters, such as dyes. Phenolics were taken as model pollutants in most cases. Reports on effect of treatment for the WAO of refractory organic pollutants in industrial wastewaters are reviewed, such as emulsified wastewater, TNT red water, etc. Discussions are also made on the mechanism and kinetics of WAO and main technical parameters influencing WAO. Finally, development direction of WAO is summed up.

  • Progress of catalytic Wet Air Oxidation technology
    Arabian Journal of Chemistry, 2016
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    Abstract Catalytic Wet Air Oxidation (CWAO) is one of the most economical and environmental-friendly advanced Oxidation process for high strength, toxic, hazardous and non-biodegradable contaminants under milder conditions, which is developed on the basic of Wet Air Oxidation. Various heterogeneous catalysts including noble metals and metal oxides have been extensively studied to enhance the efficiency of CWAO. The advances in the research on wastewater treatment by CWAO process are summarized in aspects of reaction mechanism investigation, reaction kinetics study and catalyst development. It is pointed out that the preparation of active and stable catalysts, the investigation on reaction mechanisms and the study on reaction kinetics models are very important for the promotion of CWAO application.

  • Wet Air Oxidation of Oily Sludge
    International Journal of Green Energy, 2013
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen, Huaiyuan Wang
    Abstract:

    The article is inclined to report experimental results performed in a batch reactor on the Wet Air Oxidation of oily sludge. It is shown that increasing the reaction temperature can improve chemical oxygen demand (COD) removal significantly, increasing O2 excess (OE), initial concentration of oily sludge and prolonging reaction time can help to improve the chemical oxygen demand (COD) removal. COD removal is 96.15% under the optimal condition. It is concluded that Wet Air Oxidation is an effective process for removing organic compounds from oily sludge. The intermediate product such as acetic acid (CH3COOH), carbon monoxide (CO), and the final product such as carbon dioxide (CO2) is analyzed by liquid chromatography and gas chromatography in the experiment.

  • Pretreatment of oily sludge by Wet Air Oxidation
    Journal of the Energy Institute, 2012
    Co-Authors: Guolin Jing, Mingming Luan, Chunjie Han, Tingting Chen
    Abstract:

    The pretreatment of oily sludge by Wet Air Oxidation (WAO) technique was investigated. The effect of reaction parameters such as temperature, initial chemical oxygen demand (COD), residence time, catalyst type, concentration of catalyst and O2 excess on the COD removal rate was investigated. The results showed that oily sludge had a high COD removal rate by WAO. Adding the catalyst significantly improved the COD removal rate. Homogeneous catalyst, Mn2+, showed a significant removal rate for pollutants. The COD removal rate was 96·8% by catalytic Wet Air Oxidation (CWAO) over Mn2+ catalyst. The results indicated that the CWAO was an effective pretreatment method for the oily sludge.

  • Effect of Na2CO3 on the pre-treatment of oily sludge using Wet Air Oxidation
    International Journal of Environmental Technology and Management, 2012
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    In this study, pretreatment of oily sludge, was carried out by Wet Air Oxidation (WAO) process. Experiments were conducted to see the effects of temperature, the initial COD, residence time, concentration of catalyst and OE (O2 excess) on the Oxidation of the oily sludge. The results showed that in the WAO 88.4% Chemical Oxygen Demand (COD) was achieved after 9min. COD removal was 92.7% in the Catalytic Wet Air Oxidation (CWAO) over Na2CO3 catalyst. The results proved that the CWAO was an effective pre-treatment method for the oily sludge.

Mingming Luan - One of the best experts on this subject based on the ideXlab platform.

  • Treatment of refractory organic pollutants in industrial wastewater by Wet Air Oxidation
    Arabian Journal of Chemistry, 2017
    Co-Authors: Mingming Luan, Guolin Jing, Yongjian Piao, Debin Liu, Lifeng Jin
    Abstract:

    Abstract Wet Air Oxidation (WAO) is one of the most economical and environmentally-friendly advanced Oxidation processes. It makes a promising technology for the treatment of refractory organic pollutants in industrial wastewaters. In Wet Air Oxidation aqueous waste is oxidized in the liquid phase at high temperatures (125–320 °C) and pressures (0.5–20 MPa) in the presence of an oxygen-containing gas (usually Air). The advantages of the process include low operating costs and minimal Air pollution discharges. The present review is concerned about the literature published in the treatment of refractory organic pollutants in industrial wastewaters, such as dyes. Phenolics were taken as model pollutants in most cases. Reports on effect of treatment for the WAO of refractory organic pollutants in industrial wastewaters are reviewed, such as emulsified wastewater, TNT red water, etc. Discussions are also made on the mechanism and kinetics of WAO and main technical parameters influencing WAO. Finally, development direction of WAO is summed up.

  • Progress of catalytic Wet Air Oxidation technology
    Arabian Journal of Chemistry, 2016
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    Abstract Catalytic Wet Air Oxidation (CWAO) is one of the most economical and environmental-friendly advanced Oxidation process for high strength, toxic, hazardous and non-biodegradable contaminants under milder conditions, which is developed on the basic of Wet Air Oxidation. Various heterogeneous catalysts including noble metals and metal oxides have been extensively studied to enhance the efficiency of CWAO. The advances in the research on wastewater treatment by CWAO process are summarized in aspects of reaction mechanism investigation, reaction kinetics study and catalyst development. It is pointed out that the preparation of active and stable catalysts, the investigation on reaction mechanisms and the study on reaction kinetics models are very important for the promotion of CWAO application.

  • Wet Air Oxidation of Oily Sludge
    International Journal of Green Energy, 2013
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen, Huaiyuan Wang
    Abstract:

    The article is inclined to report experimental results performed in a batch reactor on the Wet Air Oxidation of oily sludge. It is shown that increasing the reaction temperature can improve chemical oxygen demand (COD) removal significantly, increasing O2 excess (OE), initial concentration of oily sludge and prolonging reaction time can help to improve the chemical oxygen demand (COD) removal. COD removal is 96.15% under the optimal condition. It is concluded that Wet Air Oxidation is an effective process for removing organic compounds from oily sludge. The intermediate product such as acetic acid (CH3COOH), carbon monoxide (CO), and the final product such as carbon dioxide (CO2) is analyzed by liquid chromatography and gas chromatography in the experiment.

  • Pretreatment of oily sludge by Wet Air Oxidation
    Journal of the Energy Institute, 2012
    Co-Authors: Guolin Jing, Mingming Luan, Chunjie Han, Tingting Chen
    Abstract:

    The pretreatment of oily sludge by Wet Air Oxidation (WAO) technique was investigated. The effect of reaction parameters such as temperature, initial chemical oxygen demand (COD), residence time, catalyst type, concentration of catalyst and O2 excess on the COD removal rate was investigated. The results showed that oily sludge had a high COD removal rate by WAO. Adding the catalyst significantly improved the COD removal rate. Homogeneous catalyst, Mn2+, showed a significant removal rate for pollutants. The COD removal rate was 96·8% by catalytic Wet Air Oxidation (CWAO) over Mn2+ catalyst. The results indicated that the CWAO was an effective pretreatment method for the oily sludge.

  • Effect of Na2CO3 on the pre-treatment of oily sludge using Wet Air Oxidation
    International Journal of Environmental Technology and Management, 2012
    Co-Authors: Guolin Jing, Mingming Luan, Tingting Chen
    Abstract:

    In this study, pretreatment of oily sludge, was carried out by Wet Air Oxidation (WAO) process. Experiments were conducted to see the effects of temperature, the initial COD, residence time, concentration of catalyst and OE (O2 excess) on the Oxidation of the oily sludge. The results showed that in the WAO 88.4% Chemical Oxygen Demand (COD) was achieved after 9min. COD removal was 92.7% in the Catalytic Wet Air Oxidation (CWAO) over Na2CO3 catalyst. The results proved that the CWAO was an effective pre-treatment method for the oily sludge.