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Kiyohisa Ohta - One of the best experts on this subject based on the ideXlab platform.
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titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution kinetics mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
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Titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution—kinetics, mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
Satoshi Kaneco - One of the best experts on this subject based on the ideXlab platform.
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titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution kinetics mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
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Titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution—kinetics, mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
Tohru Suzuki - One of the best experts on this subject based on the ideXlab platform.
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titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution kinetics mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
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Titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution—kinetics, mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
Hideyuki Katsumata - One of the best experts on this subject based on the ideXlab platform.
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titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution kinetics mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
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Titanium dioxide mediated photocatalytic degradation of Dibutyl Phthalate in aqueous solution—kinetics, mineralization and reaction mechanism
Chemical Engineering Journal, 2006Co-Authors: Satoshi Kaneco, Hideyuki Katsumata, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The photocatalyzed degradation conditions of di-n-butyl-ortho-Phthalate, a representative endocrine disruptor, in aqueous titanium dioxide (TiO2)-suspended solution were optimized. The effect of various factors, such as photocatalyst dosage, initial substrate concentration, temperature, pH and co-existing organic substance, on the photocatalytic degradation of Dibutyl Phthalate was investigated. The final mineralization product was carbon dioxide during the degradation of Dibutyl Phthalate in aqueous solution. The intermediate products were identified by GC–MS technique. On the basis of the detected intermediate species and the calculated frontier electron densities of Dibutyl Phthalate structure, the photocatalytic degradation reaction pathways were proposed. The photocatalytic degradation treatment for the wastewater including phthalic acid esters is simple, easy handling and low cost.
Zhongyin Chen - One of the best experts on this subject based on the ideXlab platform.
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Photocatalytic ozonation of Dibutyl Phthalate over TiO2 film
Journal of Photochemistry and Photobiology A-chemistry, 2005Co-Authors: Wanpeng Zhu, Le Chen, Pengyi Zhang, Zhongyin ChenAbstract:Abstract A novel carbon black modified nano-TiO2 film photocatalyst (CB-TiO2) was prepared by a sol–gel method and used for degrading and mineralizing Dibutyl Phthalate. The film was characterized by XRD, SEM, and DRS techniques. Carbon black modification could make TiO2 film more pores, looser structure, smaller crystal sizes and longer excitation wavelength. The photocatalytic activity of the CB-TiO2 films was 1.4 times higher than that of TiO2 films in degrading Dibutyl Phthalate. The results showed that ozone concentrations had an important effect on degradation and mineralization of Dibutyl Phthalate. The combined photocatalysis with UV irradiation and ozonation (TiO2/UV/O3) process considerably improved mineralization and degradation of Dibutyl Phthalate compared to combined photocatalysis with UV irradiation (TiO2/UV) process, combined ozonation with UV irradiation (UV/O3) process and ozonation alone (O3) process. Dibutyl Phthalate can be quickly mineralized in TiO2/UV/O3 and UV/O3, its mineralization followed pseudo-zero-order kinetics dependent upon ozone concentration and indicated its concentration did not affect the kinetics during TiO2/UV, UV/O3 and TiO2/UV/O3 processes. The kinetic study showed the mineralization rate constants of Dibutyl Phthalate with TiO2/UV/O3 are 1.2–1.8 times higher than that of UV/O3 with the same ozone concentration and 3.5 times higher than that of TiO2/UV.