Metal catalysts impregnated on porous media for aqueous phenol decomposition within three-phase fluidized-bed reactor

Mungmart, M.; Kijsirichareonchai, U.; Tonanon, Nattaporn; Prechanont, S.; Panpranot, Joongjai; Yamamoto, Takuji; Eiad-Ua, Apiluck; Sano, Noriaki; Tanthapanichakoon, Wiwut; Charinpanitkul, Tawatchai

doi:10.1016/j.jhazmat.2010.09.061

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…The FBR, which could provide various advantages, such as simplicity in construction and operation, low operating costs, and greater availability of reactants, has gained increased attention in a wide range of industrial applications (Qu et al, 2007;Mungmart et al, 2011). Based on our literature review, except for a few reports available on the use of advanced oxidation processes for degrading pollutants from wastewaters (Pirgalıoğlu and Ozbelge, 2009;Mungmart et al, 2011), no investigation was found on the CMA treatment of wastewater containing biorecalcitrants. Therefore, the present study focuses on the preparation, characterization, and the properties of CMA chitosan to study its capability for degrading a model biorecalcitrant.…”

Section: Introductionmentioning

confidence: 99%

Efficient Degradation of a Biorecalcitrant Pollutant from Wastewater Using a Fluidized Catalyst-Bed Reactor

Ahmadi

Ramavandi

Sahebi

2014

Chemical Engineering Communications

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This study investigated the treatment of an azo dye, as a biorecalcitrant model, from industrial wastewater by using Cu/Mg/Al-chitosan in a fluidized catalyst-bed reactor. A number of variables were used to study the impact they had on the oxidation process involving azo dye. The maximum degradation of the azo dye was achieved at 7 g Cu/Mg/Al-chitosan. The chloride and sulfate ions had a synergistic effect on azo dye removal. The oxidation of the azo dye under the selected conditions was of pseudo-first order. Textile wastewater could effectively be treated using a low concentration of about 7 g of Cu/Mg/Al-chitosan in a short hydraulic retention time of 10 min. The use of Cu/Mg/Al-chitosan demonstrated a promising method to eliminate the azo dye from the wastewater.

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Section: Introductionmentioning

confidence: 99%

Efficient Degradation of a Biorecalcitrant Pollutant from Wastewater Using a Fluidized Catalyst-Bed Reactor

Ahmadi

Ramavandi

Sahebi

2014

Chemical Engineering Communications

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“…It was found that the use of Co nanocatalyst with the presence of O 3 led to the best removal condition in which phenol was completely decomposed within 10 min (pseudo-1 st order rate constant k 0.1944 min 1 ). In contrast, the use of TiO 2 without O 3 resulted in the least decomposition of phenol (k 0.0066 min 1 ) (Mungmart et al 2011). Contributions of adsorption on the porous supporting materials, carbon gel or silica gel, were also examined and deducted from those of the metal catalysts.…”

Section: Nano-scaled Metal Particles and Their Derivativesmentioning

confidence: 99%

Trend of Nanoparticle Technology in ASEAN with Emphasis on Thailand

Tanthapanichakoon

Charinpanitkul

Udomsak

et al. 2013

KONA

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First we survey the scope and level of research activities in nanoparticle technology (NPT) in ASEAN by looking at relevant international journal publications (2006)(2007)(2008)(2009)(2010)(2011)(2012) in terms of absolute numbers (AN), numbers of publications per million population (PMP) and per billion USD GDP (PBG). Obviously, the statistics show that, within ASEAN, the strength of Singapore covers a wide range of nanotechnology fields and applications, including carbon materials, biosensors, bioelectronics, and pharmaceutics. Malaysia places emphasis on alloys & compounds, carbon materials, and separation technology. Thailand s emphasis is on molecular modeling, carbon materials, and biosensors. When classification is made on the morphology of nanoparticles mentioned in the titles, the topmost are nanotubes (including CNT, SWCNT, MWCNT) at 392 out of 612 (64.1%), followed by generic nanoparticle/ nanopowder and nanofiber (including nanowire, nanorods). Next we look closer at 2 nanoparticle R&D organizations in Thailand, namely, CEPT (CU) and NANOTEC together with their alliances. The interest in nanotechnology of SCG (Siam Cement Group), a leading Thai industrial conglomerate, will also be briefly introduced. .

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“…In recent years, the fluidized bed has been widely used in wastewater treatment, petrochemical industry, biochemistry, and other fields because of its good mass and heat transfer properties [1][2][3][4]. In order to design and optimize the fluidized bed, it is important to accurately measure the distribution and flow characteristics of each phase [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Removal of the effect of the high solids holdup ring in the fluidized bed on electromagnetic tomography

Wang

Luan

Liang

et al. 2023

Meas. Sci. Technol.

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Electromagnetic tomography (EMT) system based on tunneling magneto resistance (TMR) sensor, as a non-invasive multiphase flow measurement technique, can effectively detect the solid-phase distribution in the gas-liquid-solid three-phase fluidized bed with magnetic catalysts by reconstructing the permeability distribution image. The radial distribution of solid particles in the gas-liquid-solid three-phase fluidized bed with uneven fluidization is non-uniform, in which a high solids holdup ring exists near the wall of the riser. When the TMR-EMT system is used directly for image reconstruction, the high solids holdup ring will greatly reduce the image quality, further leading to the inability to detect phase information in the riser. To improve the reconstructed image by the TMR-EMT system, a removal method for the high solids holdup ring is proposed. The method firstly estimates the equivalent thickness of the high solids holdup ring based on the boundary measurement data. Then the influence of the high solids holdup ring on the boundary measurement data is subtracted. By the removal method, the internal phase distribution information is prominent. The simulation and experimental results demonstrate that the proposed method can realize the permeability distribution detection by the TMR-EMT system in the presence of the high solids holdup ring.

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Metal catalysts impregnated on porous media for aqueous phenol decomposition within three-phase fluidized-bed reactor

Cited by 11 publications

References 14 publications

Efficient Degradation of a Biorecalcitrant Pollutant from Wastewater Using a Fluidized Catalyst-Bed Reactor

Efficient Degradation of a Biorecalcitrant Pollutant from Wastewater Using a Fluidized Catalyst-Bed Reactor

Trend of Nanoparticle Technology in ASEAN with Emphasis on Thailand

Removal of the effect of the high solids holdup ring in the fluidized bed on electromagnetic tomography

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