The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Kiyohisa Ohta - One of the best experts on this subject based on the ideXlab platform.
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degradation of Fenitrothion by ultrasound ferrioxalate uv system
Ultrasonics Sonochemistry, 2010Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
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Degradation of Fenitrothion by ultrasound/ferrioxalate/UV system.
Ultrasonics sonochemistry, 2009Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
Hideyuki Katsumata - One of the best experts on this subject based on the ideXlab platform.
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PHOTOCATALYTIC DEGRADATION OF Fenitrothion IN WATER WITH TiO2 UNDER SOLAR IRRADIATION
VOLKSON PRESS, 2018Co-Authors: Md. Ashraful Islam Molla, Hideyuki Katsumata, Tohru Suzuki, Mai Furukawa, Ikki Tateishi, Satoshi KanecoAbstract:Fenitrothion is widely used as herbicide with strong estrogenic activity, and it can lead to abnormalities of the thyroid gland and can give mutations. Hence, their degradation treatment is necessary for the environment. The photocatalytic remediation under sunlight irradiation is very effective for the degradation of Fenitrothion. Fenitrothion is completely degraded during 10 min under the optimized conditions. The influence of various conditions, such as irradiation time, sunlight intensity, pH, temperature, TiO2 loading amount and initial substrate concentration, is investigated on the degradation of Fenitrothion. The photocatalytic degradation mechanisms are speculated, from the experimental results with molecular orbital (MO) simulation for frontier electron density. The primary photocatalytic degradation reaction keeps a pseudo first order kinetic law. The activation energy (Ea) and half-life (t1/2) are 20.6 kJ/mol and 1.4 min, respectively. The Fenitrothion wastewater photocatalytic treatment may become a good technique under solar irradiation
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degradation of Fenitrothion by ultrasound ferrioxalate uv system
Ultrasonics Sonochemistry, 2010Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
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Degradation of Fenitrothion by ultrasound/ferrioxalate/UV system.
Ultrasonics sonochemistry, 2009Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
Tohru Suzuki - One of the best experts on this subject based on the ideXlab platform.
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PHOTOCATALYTIC DEGRADATION OF Fenitrothion IN WATER WITH TiO2 UNDER SOLAR IRRADIATION
VOLKSON PRESS, 2018Co-Authors: Md. Ashraful Islam Molla, Hideyuki Katsumata, Tohru Suzuki, Mai Furukawa, Ikki Tateishi, Satoshi KanecoAbstract:Fenitrothion is widely used as herbicide with strong estrogenic activity, and it can lead to abnormalities of the thyroid gland and can give mutations. Hence, their degradation treatment is necessary for the environment. The photocatalytic remediation under sunlight irradiation is very effective for the degradation of Fenitrothion. Fenitrothion is completely degraded during 10 min under the optimized conditions. The influence of various conditions, such as irradiation time, sunlight intensity, pH, temperature, TiO2 loading amount and initial substrate concentration, is investigated on the degradation of Fenitrothion. The photocatalytic degradation mechanisms are speculated, from the experimental results with molecular orbital (MO) simulation for frontier electron density. The primary photocatalytic degradation reaction keeps a pseudo first order kinetic law. The activation energy (Ea) and half-life (t1/2) are 20.6 kJ/mol and 1.4 min, respectively. The Fenitrothion wastewater photocatalytic treatment may become a good technique under solar irradiation
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degradation of Fenitrothion by ultrasound ferrioxalate uv system
Ultrasonics Sonochemistry, 2010Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
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Degradation of Fenitrothion by ultrasound/ferrioxalate/UV system.
Ultrasonics sonochemistry, 2009Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
Toshiko Okada - One of the best experts on this subject based on the ideXlab platform.
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degradation of Fenitrothion by ultrasound ferrioxalate uv system
Ultrasonics Sonochemistry, 2010Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
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Degradation of Fenitrothion by ultrasound/ferrioxalate/UV system.
Ultrasonics sonochemistry, 2009Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
Satoshi Kaneco - One of the best experts on this subject based on the ideXlab platform.
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PHOTOCATALYTIC DEGRADATION OF Fenitrothion IN WATER WITH TiO2 UNDER SOLAR IRRADIATION
VOLKSON PRESS, 2018Co-Authors: Md. Ashraful Islam Molla, Hideyuki Katsumata, Tohru Suzuki, Mai Furukawa, Ikki Tateishi, Satoshi KanecoAbstract:Fenitrothion is widely used as herbicide with strong estrogenic activity, and it can lead to abnormalities of the thyroid gland and can give mutations. Hence, their degradation treatment is necessary for the environment. The photocatalytic remediation under sunlight irradiation is very effective for the degradation of Fenitrothion. Fenitrothion is completely degraded during 10 min under the optimized conditions. The influence of various conditions, such as irradiation time, sunlight intensity, pH, temperature, TiO2 loading amount and initial substrate concentration, is investigated on the degradation of Fenitrothion. The photocatalytic degradation mechanisms are speculated, from the experimental results with molecular orbital (MO) simulation for frontier electron density. The primary photocatalytic degradation reaction keeps a pseudo first order kinetic law. The activation energy (Ea) and half-life (t1/2) are 20.6 kJ/mol and 1.4 min, respectively. The Fenitrothion wastewater photocatalytic treatment may become a good technique under solar irradiation
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degradation of Fenitrothion by ultrasound ferrioxalate uv system
Ultrasonics Sonochemistry, 2010Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.
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Degradation of Fenitrothion by ultrasound/ferrioxalate/UV system.
Ultrasonics sonochemistry, 2009Co-Authors: Hideyuki Katsumata, Toshiko Okada, Satoshi Kaneco, Tohru Suzuki, Kiyohisa OhtaAbstract:Abstract The sonochemical photodegradation of Fenitrothion, which is one of phosphorothiate insecticides, was carried out in the presence of Fe(III) and oxalate. The degradation rate was strongly influenced by initial concentrations of Fe(III) and oxalate. An initial Fenitrothion concentration of 10 mg L −1 was completely degraded after 30 min at pH 6 under the optimum conditions. Therefore, the photo-Fenton reaction combined with sonication in the presence of oxalate was available around neutral pH. The decrease of TOC as a result of mineralization of Fenitrothion was observed during ultrasound (US)/ferrioxalate/UV process. In addition, the formations of nitrite and sulfate ions as end-products were observed during this degradation system. The decomposition of Fenitrothion gave two kinds of intermediate products. The degradation mechanism of Fenitrothion was proposed on the base of the evidence of the identified intermediates. Based on these results, US/ferrioxalate/UV system could be useful technology for the treatment of wastewater containing Fenitrothion.