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Nonglak Boonrattanakij - One of the best experts on this subject based on the ideXlab platform.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak BoonrattanakijAbstract:This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe(2+) to catalyze the decomposition of H(2)O(2). Nonetheless, as the free Fe(2+) was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667-5mM of Fe(2+), 10-50mM of H(2)O(2), 5-12.5mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8+/-0.2, can be described as: [see formula text] Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30-65% of iron via iron crystallization onto the carriers' surface which could lead to a significant reduction in ferric hydroxide sludge production. H(2)O(2) played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak Boonrattanakij, Mingchun LuAbstract:Abstract This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe2+ to catalyze the decomposition of H2O2. Nonetheless, as the free Fe2+ was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667–5 mM of Fe2+, 10–50 mM of H2O2, 5–12.5 mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8 ± 0.2, can be described as: − d [ NB ] d t = 0.259 [ F e 2 + ] 1.02 [ H 2 O 2 ] 0.34 [ NB ] − 0.094 Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30–65% of iron via iron crystallization onto the carriers’ surface which could lead to a significant reduction in ferric hydroxide sludge production. H2O2 played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
Jin Anotai - One of the best experts on this subject based on the ideXlab platform.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak BoonrattanakijAbstract:This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe(2+) to catalyze the decomposition of H(2)O(2). Nonetheless, as the free Fe(2+) was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667-5mM of Fe(2+), 10-50mM of H(2)O(2), 5-12.5mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8+/-0.2, can be described as: [see formula text] Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30-65% of iron via iron crystallization onto the carriers' surface which could lead to a significant reduction in ferric hydroxide sludge production. H(2)O(2) played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak Boonrattanakij, Mingchun LuAbstract:Abstract This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe2+ to catalyze the decomposition of H2O2. Nonetheless, as the free Fe2+ was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667–5 mM of Fe2+, 10–50 mM of H2O2, 5–12.5 mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8 ± 0.2, can be described as: − d [ NB ] d t = 0.259 [ F e 2 + ] 1.02 [ H 2 O 2 ] 0.34 [ NB ] − 0.094 Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30–65% of iron via iron crystallization onto the carriers’ surface which could lead to a significant reduction in ferric hydroxide sludge production. H2O2 played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
Mingchun Lu - One of the best experts on this subject based on the ideXlab platform.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak Boonrattanakij, Mingchun LuAbstract:Abstract This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe2+ to catalyze the decomposition of H2O2. Nonetheless, as the free Fe2+ was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667–5 mM of Fe2+, 10–50 mM of H2O2, 5–12.5 mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8 ± 0.2, can be described as: − d [ NB ] d t = 0.259 [ F e 2 + ] 1.02 [ H 2 O 2 ] 0.34 [ NB ] − 0.094 Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30–65% of iron via iron crystallization onto the carriers’ surface which could lead to a significant reduction in ferric hydroxide sludge production. H2O2 played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
Pasootah Sakulkittimasak - One of the best experts on this subject based on the ideXlab platform.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak BoonrattanakijAbstract:This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe(2+) to catalyze the decomposition of H(2)O(2). Nonetheless, as the free Fe(2+) was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667-5mM of Fe(2+), 10-50mM of H(2)O(2), 5-12.5mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8+/-0.2, can be described as: [see formula text] Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30-65% of iron via iron crystallization onto the carriers' surface which could lead to a significant reduction in ferric hydroxide sludge production. H(2)O(2) played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
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kinetics of Nitrobenzene oxidation and iron crystallization in fluidized bed fenton process
Journal of Hazardous Materials, 2009Co-Authors: Jin Anotai, Pasootah Sakulkittimasak, Nonglak Boonrattanakij, Mingchun LuAbstract:Abstract This research investigated the Nitrobenzene oxidation and iron removal by fluidized-bed Fenton process using metal oxide as the carriers. It was found that the removal efficiency of Nitrobenzene was not affected in the presence of metal oxide. However, metal oxide could retard the degradation rate of Nitrobenzene with Fenton process due to ferrous adsorption/complexation onto its surface leaving insufficient free Fe2+ to catalyze the decomposition of H2O2. Nonetheless, as the free Fe2+ was sufficient, Nitrobenzene was oxidized at the same rate as that by the conventional Fenton process. Fenton's reagent and Nitrobenzene concentrations have an impact on Nitrobenzene oxidation rate. The empirical kinetic equation for Nitrobenzene oxidation by the fluidized-bed Fenton process under the conditions of 0.667–5 mM of Fe2+, 10–50 mM of H2O2, 5–12.5 mM of Nitrobenzene, 76.9 g/l of metal oxide, and pH 2.8 ± 0.2, can be described as: − d [ NB ] d t = 0.259 [ F e 2 + ] 1.02 [ H 2 O 2 ] 0.34 [ NB ] − 0.094 Considering on iron removal performance, it was found that the fluidized-bed Fenton process could remove 30–65% of iron via iron crystallization onto the carriers’ surface which could lead to a significant reduction in ferric hydroxide sludge production. H2O2 played an important role in iron crystallization and once it was exhausted, the re-dissolution of iron occurred. In addition, it was found that the metal oxide could be repeatedly used up to 5 cycles without any significant deterioration in its surface activity. Hence, it implies that the metal oxide can be used successfully in the fluidized-bed Fenton process operated under a continuous mode.
Sujeewa Kirindigoda - One of the best experts on this subject based on the ideXlab platform.
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effect of Nitrobenzene on postharvest quality of bell pepper capsicum annuum l under green house condition
International Journal of Research, 2018Co-Authors: Shyamalee Kohombange, H K L K Gunasekera, Sujeewa KirindigodaAbstract:Bell pepper (Capsicum annuum L.) is grown extensively throughout the world. Poor fruit-set as well as loss of reproductive structures due to moisture stress is one of the major barriers to tropical adaptation of bell pepper. Hence, the objective of the present study was to examine the effect of Nitrobenzene (flowering stimulant and yield booster) on postharvest quality of bell pepper yield. The study was conducted at a farmer poly tunnel located in Pilimathalawa (WU1), Sri Lanka. The experiment was laid out in a Completely Randomize Design (CRD) with four treatments randomized in three replicates. The treatments were T 1 – Control (with out Nitrobenzene), T 2 – Nitrobenzene 15%, T 3 – Nitrobenzene 20%, T 4 – Nitrobenzene 25%. Plants were established in drip-fertigated bags in the Poly tunnel and standard crop management practices were applied through out the study. Nitrobenzene was sprayed to the seedlings 40, 55, 80 and 105 days after planting. Albert solution, 6: 30: 30 fertilizer mixture 20: 20 fertilizer mixture and Ca(NO 3 ) 2 were used as recommended fertilizers. Measurements were taken on shelf-life in room temperature, shelf-life in refrigerator, weight loss in room temperature and weight loss in refrigerator. The data obtained were tabulated and analyzed subjected to the Analysis of Variance (ANOVA) procedure of Statistical Analysis System (SAS). Duncan’s New Multiple Range Test (DNMRT) was performed to compare the differences among treatment means at p=0.05. The highest shelf-life and lowest weight loss were observed in T4, i.e. 25% Nitrobenzene applied treatment. On the other hand the lowest shelf-life as well as highest weight loss were recorded from T3 (20% Nitrobenzene), T2 (15% Nitrobenzene) and T1 (control of the experiment). Among different treatments tested, 25% Nitrobenzene applied plants showed superior results in contrast to other Nitrobenzene levels with yield quality as well as postharvest performances under greenhouse condition.
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effect of various concentrations of Nitrobenzene on bell pepper capsicum annuum l yield under green house condition
Journal of Horticulture, 2017Co-Authors: Shyamalee Kohombange, Gunasekera Hklk, Sujeewa KirindigodaAbstract:Bell pepper (Capsicum annuum L.) is grown extensively throughout the world especially in temperate countries. Poor fruit-set as well as loss of reproductive structures due to moisture stress is one of the major barriers to tropical adaptation of bell pepper. Hence the objective of the present study was to examine the effect of various concentration of Nitrobenzene (flowering stimulant and yield booster) on bell pepper yield. The study was conducted at a farmer poly tunnel located in Pilimathalawa (WU1), Sri Lanka. The experiment was laid out in a Completely Randomize Design (CRD) with four treatments randomized in three replicates. The treatments were T1 – Control (with out Nitrobenzene), T2 – Nitrobenzene 15%, T3 – Nitrobenzene 20%, T4 – Nitrobenzene 25%. Plants were established in drip-fertigated bags in the Poly tunnel and standard crop management practices were applied throughout the study. Nitrobenzene was sprayed to the seedlings 40, 55, 80 and 105 days after planting. Albert solution, 6: 30: 30 fertilizer mixture 20: 20 fertilizer mixture and Ca (NO3)2 were used as recommended fertilizers. Measurements were taken on flowering, fruit setting, yield as well as the quality of the fruits. The data obtained were tabulated and analyzed subjected to the Analysis of Variance (ANOVA) procedure of Statistical Analysis System (SAS). Duncan’s New Multiple Range Test (DNMRT) was performed to compare the differences among treatment means at p=0.05. The highest number of fruits and flowers/plant was observed in T3 and T4, i.e. 20% and 25% Nitrobenzene applied treatments. On the other hand the lowest number of flowers as well as fruits were recorded from T2 (15% Nitrobenzene) and T1 (control of the experiment). Among different treatments tested, 25% Nitrobenzene applied plants showed superior results in contrast to other Nitrobenzene levels with enhancing flowering, fruit setting, yield quality as well as postharvest performances under greenhouse condition.
