Catalytic wet air oxidation (CWAO)
Catalytic wet air oxidation of aniline on transition metal modified MCM-41 catalysts
... The (Cu)MCM-41 catalyst prepared hydrothermally showed a very high efficiency for the catalytic wet air oxidation of aniline. After 2 h of reaction, 96.0% aniline conversion and 72.9% TOC ...
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Catalytic wet air oxidation of olive mill wastewater
... the catalytic wet air oxidation of an olive mill ...reactions, oxidation reaction inhibition due to refractory organic compounds formation and catalyst deactivation due to oxygen ...
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Degradation of trinitrophenol by sequential catalytic wet air oxidation and solar TiO2 photocatalysis
... non-catalytic wet air oxidation), but it can take place in pores of different sizes; thus, the extent of reaction depends on the AC textural ...The oxidation of TNP takes place into ...
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Catalytic properties of carbon xerogels for wet oxidation of aniline
... Abstract The main objective of this work was to develop carbon materials suitable to be used efficiently in catalytic wet air oxidation (CWAO) processes. Accordingly, carbon xerogels with ...
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Catalytic wet air oxidation of organic pollutants in waste waters
... more resistant to deactivation than lr/C (Figure 6), the observed deactivation of the latter being attributed to the metal over-oxidation. Nowadays, some of these wa[r] ...
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Condensation by-products in wet peroxide oxidation: Fouling or catalytic promotion? Part II: Activity, nature and stability
... in catalytic wet peroxide oxidation (CWPO) and catalytic wet air oxidation (CWAO) processes, unavoidably involve oxidative coupling or polymerization reactions [ 1 – 4 ...
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Condensation by-products in wet peroxide oxidation: Fouling or catalytic promotion? Part I: Evidences of an autocatalytic process
... The decline of water quality is a global concern issue as it is crucial to the environment and human health, but also to our social and economic development. Over the last hundred years, the use of water grew by a factor ...
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Enhanced degradation of Bisphenol A from high saline polycarbonate plant wastewater using wet air oxidation
... total air pressure and obtained results is depicted in ...the catalytic WAO process, increasing the reaction time to 90 h and the reaction temperature to 210 ◦ C, the total BPA destruc- tion was obtained ...
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The role of cobalt in bimetallic iron-cobalt magnetic carbon xerogels developed for catalytic wet peroxide oxidation
... Catalytic wet peroxide oxidation (CWPO) is a recognized low cost advanced oxidation process (AOP) [1], typically operated with simple equipment and under mild conditions ...[4], ...
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Magnetic titanium/carbon nanotube nanocomposite catalyst for oxidative degradation of Bisphenol A from high saline polycarbonate plant effluent using catalytic wet peroxide oxidation
... the wet cakes were dispersed into 500 mL of a ...the wet cakes were dried in vacuum under cryogenic conditions to remove adsorbed water without changing the structure of the as-synthesized ...in air ...
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Exploring the activity of chemical-activated carbons synthesized from peach stones as metal-free catalysts for wet peroxide oxidation
... flowing air (400 ...the catalytic wet peroxide oxidation (CWPO) of highly concentrated solutions of 4-nitrophenol (4-NP, 5 g L −1 ) during 24 h experiments, conducted at relatively mild ...
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Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste
... cedure described elsewhere [22] . For that purpose, 67 mmol of cobalt (II) chloride hexahydrate and 134 mmol of iron (III) chloride hexahydrate were dissolved in 100 mL of distilled water and trans- ferred into a 250 mL ...
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Carbon nanotubes as catalysts for wet peroxide oxidation: The effect of surface chemistry
... TEM images ( Fig. 2 ) show that the regular E30 nanotubes heat- treated at 800 °C (E30HT) present an average external diameter of ca. 9.6 nm, whilst those oxidized with nitric acid (E30 N) show a diameter of ca. 8.5 nm. ...
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Effects of b-polynitration on the catalytic efficiency of rutheniumporphyrins in cyclohexane oxidation.
... THE CATALYTIC EFFICIENCY OF RUTHENIUMPORPHYRINS IN CYCLOHEXANE ...cyclohexane oxidation in the presence of iodosylbenzene, hydrogen peroxide and sodium hypochlorite as oxygen donors, under mild ...the ...
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Synthesis and catalytic properties on oxidation reaction of goethite containing niobium.
... A morfologia dos materiais foi estudada por MEV e as micrografias para a Gt-pura e para a amostra contendo o maior teor de nióbio, Gt-0,30, são mostradas na Figura 3.. Os resultados apre[r] ...
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Comparison of microwave and mechanochemical energy inputs in the catalytic oxidation of cyclohexane
... 200 mg) were directly placed in a PM100/200 Retsch GmbH planetary ball mill equipped with a 50 mL bowl and mechani- cally ground with 10 stainless steel balls of 10 mm diameter for 1 h similar to the procedures described ...
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Soil methane oxidation in both dry and wet temperate eucalypt forests shows a near-identical relationship with soil air-filled porosity
... site air temperature aver- aged over the chamber cycle period (black diamonds), daily rainfall sums (blue bars) and coefficient of variance of the CH 4 flux cycle mean shown in (a) (grey ...
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Efficient ceria–silica catalysts for BTX oxidation: Probing the catalytic performance and oxygen storage
... The catalytic stability towards the benzene oxidation was investigated as a function of time for the 5 wt% Ce/MCM-41 cata- lyst as shown in ...of catalytic activity was detected even after 24 h when ...
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Enhanced performance of cobalt ferrite encapsulated in graphitic shell by means of AC magnetically activated catalytic wet peroxide oxidation of 4- nitrophenol
... beginning of the MA-CWPO run. Nevertheless, even under these con- ditions the results show that the 4-NP removal obtained is negligible (cf. Fig. 5a), since it is only ca. 6% higher than that obtained in the non- ...
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A new use for modified sugarcane bagasse containing adsorbed Co2+and Cr3+ : catalytic oxidation of terpenes.
... allylic oxidation and epoxidation products were obtained, despite the main mechanism being allylic oxidation according to literature (Sales et ...allylic oxidation prod- ucts and the addition of the ...
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