Synergistic degradation performance and mechanism of 17β-estradiol by dielectric barrier discharge non-thermal plasma combined with Pt–TiO2

Chen, Ying; Sun, Lei; Yu, Zebin; Wang, Li; Xiang, Guoliang; Wan, Shungang

doi:10.1016/j.seppur.2015.07.061

Cited by 29 publications

(2 citation statements)

References 41 publications

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“…Plasma also can be a source of UV emission which can be utilized to enhance degradability of photocatalysts while employing synergistic effects of them [19,20]. In addition, in order to prevent main drawbacks of photocatalysts such as recombination of e-and h+, which hampers photocatalytic reaction process, noble metal Pt-doped TiO 2 has been proposed and investigated to increase catalytic reactions to enhance degradation of persistent contaminants [21].…”

Section: Introductionmentioning

confidence: 99%

Degradation of 4-chlorophenol in aqueous solution by dielectric barrier discharge system: effect of fed gases

Hasani

Khani

Karimaei

et al. 2019

J Environ Health Sci Engineer

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A dielectric barrier discharge system with a discharging zone where degradation processes happen is designed to remove 4chlorophenol from water. The removal of 4-chlorophenol was influenced by the processing parameters such as gas flow rate, flow ratio of oxygen and argon, applied voltage and total applied power. Increasing the power or gas flow rates within a certain range enhanced the removal efficiency. 99% of 4-chlorophenol was removed in 6.5 min at reactor's efficient point which is set by adjusting the flow ratio of introduced gases and voltage. The removal percent was about 95% at 5 min of non-thermal plasma treatment with peak voltage of 10 kV and oxygen and argon flow rate of 20 SCCM and 200 SCCM respectively. Then by adjusting the flow ratios in order to find the optimum point. At this point the efficiency reached its peak due to excessive introduction oxygen gas which results in production of more oxidative agents. HPLC and GC-MS analysis have been carried out in order to investigate the by-products of degradation process. After 6.5 min of treatment at efficient point of degradation reactor, a 64% decrease in COD index has been indicated.Keywords Dielectric barrier discharge . Non-thermal atmospheric plasma . 4-chlorophenol . AOP . Endocrine disruptors . Plasma in liquids * Babak Shokri

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Section: Introductionmentioning

confidence: 99%

Degradation of 4-chlorophenol in aqueous solution by dielectric barrier discharge system: effect of fed gases

Hasani

Khani

Karimaei

et al. 2019

J Environ Health Sci Engineer

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“…Low-temperature plasma technology can simultaneously remove a variety of pollutants during the denitration reaction, and can effectively reduce the secondary pollution caused to the environment. Therefore, it is an ideal flue gas treatment technology for the purpose of thoroughly purifying the coal-fired flue gas [ 1 , 2 , 3 ]. However, there are also problems with the technology, such as the low efficiency of denitration, wide distribution of products, and poor selectivity of target products.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation of Plasma-Modified Fly Ash Catalyst and Its De–NOX Mechanism

Zhang

Wen

Zhang³

et al. 2018

Materials

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Fly ash and bentonite were mixed in a certain proportion as raw materials to prepare a denitration catalyst. In previous studies, it has been concluded that fly ash-type catalysts can provide significant catalytic activity for denitrification after being modified with oxygen. In this study, the effect of plasma conditions on the denitration performance of the catalyst was investigated from the aspects of plasma modification power, modification time, and the flow rate of the gas. Boehm titration and infrared analysis systems were used to characterize the performance of the catalyst. The experimental results show that the optimal modification power is 60 W, the optimal modification time is 20 min, and the optimal gas flow rate is 40 mL/min.

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Synthesis of Highly Active Doped Graphitic Carbon Nitride using Acid‐Functionalized Precursors for Efficient Adsorption and Photodegradation of Endocrine‐Disrupting Compounds

et al. 2022

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A highly active non‐metallic doped bulk graphitic carbon nitride (g‐C3N4) was synthesized via acid‐functionalized melamine decomposition. Specifically, melamine was treated with acetic acid, sulfuric acid, and phosphoric acid to obtain oxygen, sulfur, and phosphorus‐doped g‐C3N4 derivatives. Sulfur‐doped g‐C3N4 exhibited remarkable photocatalytic activity to degrade two environmentally harmful hormones, 17β‐estradiol, and 17α‐ethinylestradiol, due to its narrow energy bandgap and high surface area. The hormones were removed entirely in 30–45 min by adsorption in the dark, followed by photodegradation under visible light (430 nm). Furthermore, the pseudo‐second‐order kinetic model fitted the adsorption kinetics well, and photocatalytic degradation followed the exponential decay model. LC–MS identified the intermediate products for the photodegradation of 17β‐estradiol (E2). This study provides a simple one‐step method to synthesize highly reactive metal‐free doped bulk g‐C3N4 photocatalysts to remove harmful water pollutants.

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Synergistic degradation performance and mechanism of 17β-estradiol by dielectric barrier discharge non-thermal plasma combined with Pt–TiO2

Cited by 29 publications

References 41 publications

Degradation of 4-chlorophenol in aqueous solution by dielectric barrier discharge system: effect of fed gases

Degradation of 4-chlorophenol in aqueous solution by dielectric barrier discharge system: effect of fed gases

Study on the Preparation of Plasma-Modified Fly Ash Catalyst and Its De–NOX Mechanism

Synthesis of Highly Active Doped Graphitic Carbon Nitride using Acid‐Functionalized Precursors for Efficient Adsorption and Photodegradation of Endocrine‐Disrupting Compounds

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