Preparation of Si–Al/α-FeOOH catalyst from an iron-containing waste and surface–catalytic oxidation of methylene blue at neutral pH value in the presence of H2O2

Yuan, Baoling; Xu, Junge; Li, Xiaoting; Fu, Ming‐Lai

doi:10.1016/j.cej.2013.04.058

Cited by 46 publications

(17 citation statements)

References 41 publications

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“…Figure B depicted an XPS spectrum of the main elements of Al, Si, Fe, Ti, and O. The peaks for Fe2p, Ti2p, and Al2p core level of CBO were at 710.37, 458.15, and 74.9 eV, respectively, in agreement with previous reports . The atom molar ratios of Si/Al, Fe/Al, and Ti/Al in CBO by XPS (XRF) were 0.722 (0.015), 0.056 (0.068), and 0.031 (0.011), respectively, indicating the surface enrichment of Si and Ti in CBO.…”

Section: Resultssupporting

confidence: 87%

p‐Nitrophenol Removal by Bauxite Ore Assisted Ozonation and its Catalytic Potential

Chen

et al. 2015

CLEAN Soil Air Water

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The catalytic ozonation process (COP) has attracted wide attention in the treatment of recalcitrant organic contaminants because of its high efficiency and easy operation. In this study, the bauxite ore (BO) was used as a heterogeneous catalyst to catalyze ozonation of p-nitrophenol in water. Calcined BO (CBO) assisted COP (CBO-COP) exhibited a higher degradation and mineralization performance for p-nitrophenol in comparison with raw BO assisted COP and single ozonation process (SOP). The CBO-COP was dominated by hydroxyl radical mediated oxidation on the CBO surface, following a pseudo-first order kinetics with a reaction rate constant of 0.1944 min À 1 at 298.15 K and an activation energy of 6.476 kJ mol À 1. The reaction rate constants increased by about 76% at 298.15 K and 45% at 308.15 K and activation energy decreased by approximately 70% in CBO-COP compared to those in SOP. p-Nitrophenol in CBO-COP was first transformed into 4-nitrocatechol, pyrocatechol, hydroquinone, phenol pbenzoquinone, and o-benzoquinone, and then into benzoquinone, maleic acid, fumaric acid, acetic anhydride, acetic acid, formic acid, or directly mineralized to carbon dioxide and water. The results demonstrated the catalytic potential of BO for ozonation of recalcitrant organic contaminants considering low cost and earth-abundant reserves.

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Section: Resultssupporting

confidence: 87%

p‐Nitrophenol Removal by Bauxite Ore Assisted Ozonation and its Catalytic Potential

Chen

et al. 2015

CLEAN Soil Air Water

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“…FTIR spectra of the samples prepared in the present work showed typical features of -, -, -, and -FeOOH ( Figure 2). The FTIR bands recorded at 1628 cm −1 were ascribed to the -OH stretching vibration, whereas the bands at 883 and 795 cm −1 were ascribed to the -OH bending modes in -FeOOH [23]; bands at 847 and 696 cm −1 were ascribed to the -OH bending modes in -FeOOH [24]; nearby bands at 1020 and 750 cm −1 were the bending vibration of -OH modes in -FeOOH [12]; and bands at 1120 and 975 cm −1 were the bending vibration of OH modes in -FeOOH [25]. The four types of FeOOH were also confirmed by XRD analyses (Figure 3).…”

Section: Microstructures and Structures Of Feoohmentioning

confidence: 97%

Interactions between Phosphoric/Tannic Acid and Different Forms of FeOOH

Mei

Liao

Wang

et al. 2015

Advances in Materials Science and Engineering

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Alpha, beta, gamma, and delta hydroxyl ferric oxides (FeOOH), as the most common rust layers on iron surface, play different roles in iron preservation. Using modern surface analysis technologies such as X-ray diffraction (XRD), infrared spectra (IR), Xray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM), we studied the interactions between these four types of synthetic FeOOH and phosphoric and tannic acid of different concentrations and proportions. A 3% tannic acid + 10% phosphoric acid + FeOOH was the most suitable formula for rust stabilizer and its reaction products were made up of iron phosphate and chelate of iron and tannin. This research provided technical basis in distinguishing FeOOH and selecting rust layer stabilizer for the preservation of iron, especially iron cultural relics.

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“…The S-containing grinding wheel ash has been evaluated for the decolorization of methylene blue (MB) in the presence of H 2 O 2 at various pH conditions ). In the study by Yuan et al (2013), Fenton-like process was found to effectively oxidize MB at neutral pH and 72% of TOC removal could be achieved after 60 min of catalytic oxidation. Silica enhances the α-FeOOH adsorptive capacity by inhibiting the formation of the crystalline structure of FeOOH and the surface catalytic oxidation process through a nonradical mechanism.…”

Section: Feo Mineralsmentioning

confidence: 99%

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Buthiyappan

Raman

Daud

2016

Reviews in Chemical Engineering

243

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AbstractIn the past few years, there have been many researches on the use of different types of homogenous catalyst for the degradation of textile wastewater in conventional advanced oxidation processes (AOPs). However, homogenous AOPs suffer from few limitations, including large consumption of chemicals, acidic pH, high cost of hydrogen peroxide, generation of iron sludge, and necessity of post-treatment. Therefore, recently, there have been more researches that focus on improving the performance of conventional AOPs using heterogeneous catalysts such as titanium dioxide, nanomaterials, metal oxides, zeolite, hematite, goethite, magnetite, and activated carbon (AC). Besides, different supports such as AC that have been incorporated with transition metals and clays have been proven to have excellent catalytic activity in AOPs. This paper presents a comprehensive review of advances and prospects of catalytic AOPs for the decontamination of a wide range of synthetic and real textile wastewater. This review provides an up-to-date critical review of the information on the degradation of various textile dyes by a wide range of heterogeneous catalysts and adsorbents. The future challenges of AOPs, including chemical consumption, toxicity assessment, reactor design, and limitation of catalysts, are discussed in this paper. In addition, this paper also discusses the presence of ions, generation of by-products, and industrial applications of AOPs. Special emphasis is given to recent studies and large-scale combination of AOPs for wastewater treatment. This review paper concludes that more studies are needed for the kinetics, reactor design, and modeling of hybrid AOPs and the production of their corresponding intermediate products and secondary pollutants. A better economic model should also be developed to predict the cost of AOPs, as the treatment cost varies with dyes and textile effluents.

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Preparation of Si–Al/α-FeOOH catalyst from an iron-containing waste and surface–catalytic oxidation of methylene blue at neutral pH value in the presence of H2O2

Cited by 46 publications

References 41 publications

p‐Nitrophenol Removal by Bauxite Ore Assisted Ozonation and its Catalytic Potential

p‐Nitrophenol Removal by Bauxite Ore Assisted Ozonation and its Catalytic Potential

Interactions between Phosphoric/Tannic Acid and Different Forms of FeOOH

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

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