Catalytic ozonation of p-chlorobenzoic acid in aqueous solution using Fe-MCM-41 as catalyst

Lan, Bingyan; Huang, Ruihuan; Li, Laisheng; Yan, Huihua; Liao, Gaozu; Wang, Xi; Zhang, Qiuyun

doi:10.1016/j.cej.2012.12.083

Cited by 102 publications

(36 citation statements)

References 40 publications

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“…An important experimental result is that different TBA dosage led to the same inhibiting effect, indicating that the TBA doses used in this study could quench all HO Å in all processes, which has been confirmed in many other studies [36]. In the SOP, the presence of TBA inhibited the performance by 6.28%.…”

Section: Contributions Of Direct/indirect Oxidation and Surface Adsorsupporting

confidence: 64%

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Zhang

et al. 2016

Chemical Engineering Journal

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Section: Contributions Of Direct/indirect Oxidation and Surface Adsorsupporting

confidence: 64%

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Zhang

et al. 2016

Chemical Engineering Journal

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“…The MCM-41 can be synthesized by a variety of techniques, although the most common is the sol-gel hydrothermal method [28][29][30][31], using surfactants in the selfassembly processes that form the mesoporous materials [32][33][34]. In recent years, inorganic-organic hybrid materials have been attracted great interest because they have excellent properties [35].…”

Section: Introductionmentioning

confidence: 99%

Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene

Costa

Garcia

Santos

et al. 2015

J Sol-Gel Sci Technol

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The mesoporous materials MCM-41 and the functionalized inorganic-organic material p-aminobenzoic acid-MCM-41 (PABA-MCM-41) were used as adsorbents to remove the PAHs benzo[k]fluoranthene and benzo[b]fluoranthene from aqueous media. Both MCM-41 and PABA-MCM-41 exhibited the hexagonal mesostructures typical of the M41S family, as confirmed by SAXS, with type IV isotherms and type H1 hysteresis. The materials showed uniform mesopore size distributions, high surface areas, and thermal stability. Adsorption tests showed that for both mesoporous materials, the quantity adsorbed (q e ) increased for higher initial PAH concentrations, and adsorption equilibrium was reached in around 90 min. The experimental kinetic data were fitted using the pseudosecond-order model, and the adsorption process could be described by the Langmuir isotherm. At higher temperatures, there were increases in the initial rates of adsorption and the kinetic constants for adsorption of the PAHs by PABA-MCM-41. The thermodynamic parameters indicated that the process was spontaneous, endothermic, and with a tendency toward disorder of the system at the adsorbent/adsorbate interface. The functionalization of MCM-41 increased the efficiency of adsorption of the PAHs by 44.5 and 32.0 % for benzo[k]fluoranthene and benzo[b]fluoranthene, respectively. Graphical Abstract Effect of contact time on adsorption of (a) B[k]F and (b) B[b]F by PABA-MCM-41. Conditions: 0.05 g of PABA-MCM-41, 5 mL of each PAH solution (concentration 200 lg L -1 ), temperature of 25°C, contact time of 300 min, and agitation at 150 rpm. 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 22.2 22.3 22.4 22.5 26.5 PAH (a) Benzo[k]fluoranthene (b) Benzo[b]fluoranthene Time (min) q e (µg g -1 )

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“…The results dealing with the determination of •OH using BA and pCBA were validated using methanol (reactions and ) and n‐propanol (reactions and ) as molecular probes. Nevertheless, as has been mentioned for SA, an important limitation is related with further reaction of the quantitative product as was observed under specific experimental conditions for 4‐HBA in a Fenton process, pCBA in photocatalysis and sonocatalysis, and BA in a Fenton‐like process (Table )

…”

Section: Determination Of Reactive Oxygen Species Involved In Advancementioning

confidence: 95%

“…An additional related compound applied to quantify the concentration of •OH is p‐chlorobenzoic (pCBA). This probe, which has been evaluated in sonolytic and photocatalytic systems, leads to 4‐chlorophenol (4‐CP, reaction ) after its reaction with •OH. Alternatively, benzoic acid (BA), whose hydroxylation reaction leads to the formation of the corresponding isomers of HBA (reaction ), was employed as probe to calculate the concentration of the photogenerated •OH in natural waters and those produced in Fenton and photolysis processes .…”

Section: Determination Of Reactive Oxygen Species Involved In Advancementioning

confidence: 99%

Insight on the fundamentals of advanced oxidation processes. Role and review of the determination methods of reactive oxygen species

Fernández-Castro

Vallejo

Román

et al. 2015

J of Chemical Tech & Biotech

200

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Advanced oxidation processes (AOPs) have known increased application to treat wastewaters containing recalcitrant compounds that are hardly degraded by conventional technologies. AOPs are characterized by the formation of strong oxidants such as hydroxyl radicals, superoxide anions, hydroperoxyl radicals and singlet oxygen, which react with the contaminant, contributing to its degradation. This paper provides an overview of the determination methods of reactive oxygen species, ROS, in the application of AOPs; the methods developed in the available literature for the detection and quantification of ROS are reviewed as a first step in the assessment and detailed description of the mechanisms involved in the oxidation reactions, focusing on the critical analysis of the main strengths and weaknesses presented by the probe molecules employed in the evaluated studies.

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Catalytic ozonation of p-chlorobenzoic acid in aqueous solution using Fe-MCM-41 as catalyst

Cited by 102 publications

References 40 publications

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene

Insight on the fundamentals of advanced oxidation processes. Role and review of the determination methods of reactive oxygen species

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