Enhanced degradation of dimethyl phthalate in wastewater <i>via</i> heterogeneous catalytic ozonation process: performances and mechanisms

Yuan, Jia; Li, Yang; Guo, Yun; Wang, Zhiwei

doi:10.1039/d2ra05048j

Cited by 5 publications

(2 citation statements)

References 53 publications

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“…According to Wang and Chen [34], the adsorption of organic molecule on the catalyst is critical for catalytic ozonation. Yuan et al [35] also found that the adsorption of organics onto the catalyst was an important step which would have a direct influence on the effectiveness of the heterogeneous catalytic oxidation. Therefore, the adsorption capacity of the catalyst needs to be analyzed.…”

Section: Mechanism Of Rr195 Degradationmentioning

confidence: 99%

Catalytic Ozonation of Reactive Red 195 in Aqueous Solution over a Cobalt/Aluminum Oxide-Ceria Catalyst

Liu

Zhou

et al. 2023

Processes

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The textile industry has become one of the largest producers of water pollution. The azo dyes used in the textile industry may present a serious environmental problem because of their high toxicity and chemical stability. In the present work, the cobalt/aluminum oxide-ceria (Co/Al2O3-CeO2) catalyst was synthesized, and the degradation of Reactive Red 195 (RR195) by catalytic ozonation was studied. The Co/Al2O3-CeO2 catalyst was synthesized via the incipient wetness method with the assistance of ultrasound. The presence of Co/Al2O3-CeO2 did not notably improve the degradation of RR195 compared to ozonation alone, but it was advantageous for RR195 mineralization. The effects of initial dye concentration (200–800 mg/L), catalyst dosage (1–4 g/L), and solution pH (4–10) on color, and COD removal were evaluated. The results indicate that the dye’s concentration significantly affects COD removal efficiency. The optimum catalyst dosage and pH values were determined to be 3 g/L and 8, respectively. Co/Al2O3-CeO2 catalyst shows good catalytic activity and stability based on four repeated tests during RR195 ozonation. Finally, a possible mechanism and a kinetic scheme of the catalytic ozonation of RR195 were proposed.

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Section: Mechanism Of Rr195 Degradationmentioning

confidence: 99%

Catalytic Ozonation of Reactive Red 195 in Aqueous Solution over a Cobalt/Aluminum Oxide-Ceria Catalyst

Liu

Zhou

et al. 2023

Processes

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“…[20] Aluminum oxide (Al 2 O 3 ) containing catalysts have been used to for the dehydrogenation of ethylbenzene to styrene [21,22] and the ozonation of dimethyl phthalate. [23,24] Since both TiO 2 and Al 2 O 3 have been successfully used as catalysts for various phthalates and/or styrene, they have been chosen as metal oxide dopants to be incorporated into PANI in an effort to improve the sorption of these analytes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Doped Polyaniline as Potential Sensing Materials and/or Absorbents For Styrene and Phthalates in Aqueous Solutions

Tourne,

Jones,

Atwater

et al. 2023

Macro Chemistry & Physics

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The removal and detection of toxic analytes, including monomers and plasticizers, is important for both health and the environment. Potential absorbents and/or sensing materials are successfully made from polyaniline (PANI) and PANI doped with 10 wt.% of aluminum oxide (PANI‐Al2O3) and titanium dioxide (PANI‐TiO2). The amount of metal oxide incorporated into the surface layers of the polymer and the total amount incorporated are confirmed by energy dispersive X‐rays (EDX) and microwave plasma‐ atomic emission spectroscopy (MP‐AES), respectively. All three materials are evaluated as potential sensing materials and/or absorbents for styrene, monobutyl phthalate (MBP), and dibutyl phthalate (DBP) at 100 ppm in aqueous solutions. It is found that incorporating TiO2 into PANI improved both the sensitivity and selectivity to styrene, making PANI‐TiO2 a good absorbent and potential sensing material for styrene. Additionally, incorporating Al2O3 into PANI improved the sorption to MBP, but reduced the selectivity. As a proof‐of‐concept, the responses of the polymeric nanocomposites are combined and analyzed using principal component analysis (PCA) as such an algorithm. The output reveals good separation of the responses to each analyte, thereby demonstrating how sensing materials with poorer selectivity can be used together to overcome limitations in selectivity.

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CuxO@Cu mesh electrode with {1 1 1} facet for efficient photo-electro-Fenton reaction and low voltage robustness

Chen

Liu

Bao

et al. 2023

Applied Surface Science

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Enhanced degradation of dimethyl phthalate in wastewater via heterogeneous catalytic ozonation process: performances and mechanisms

Abstract: An efficient heterogeneous catalytic ozonation system using CeO2/Al2O3 catalyst was developed to remove dimethyl phthalate (DMP) from wastewater.

Cited by 5 publications

References 53 publications

Catalytic Ozonation of Reactive Red 195 in Aqueous Solution over a Cobalt/Aluminum Oxide-Ceria Catalyst

Catalytic Ozonation of Reactive Red 195 in Aqueous Solution over a Cobalt/Aluminum Oxide-Ceria Catalyst

Evaluation of Doped Polyaniline as Potential Sensing Materials and/or Absorbents For Styrene and Phthalates in Aqueous Solutions

CuxO@Cu mesh electrode with {1 1 1} facet for efficient photo-electro-Fenton reaction and low voltage robustness

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