Catalytic ozonation for water and wastewater treatment: Recent advances and perspective.

Catalytic ozonation is believed to belong to advanced oxidation processes (AOPs). Over the past decades, heterogeneous catalytic ozonation has received remarkable attention as an effective process for the degradation of refractory organics in wastewater, which can overcome some disadvantages of ozonation alone. Metal oxides, metals, and metal oxides supported on oxides, minerals modified with metals, and carbon materials are widely used as catalysts in heterogeneous catalytic ozonation processes due to their excellent catalytic ability. An understanding of the application can provide theoretical support for selecting suitable catalysts aimed at different kinds of wastewater to obtain higher pollutant removal efficiency. Therefore, the main objective of this review article is to provide a summary of the accomplishments concerning catalytic ozonation to point to the major directions for choosing the catalysts in catalytic ozonation in the future.

Application of Heterogeneous Catalytic Ozonation for Refractory Organics in Wastewater

Perovskite Oxide Catalysts for Advanced Oxidation Reactions

In this study, the electrocatalytic synergy of the graphite/β-PbO2 anode and granular activated carbon (GAC) particles electrodes for bisphenol A (BPA) degradation are investigated in a three-dimensional electrochemical reactor (3DER). The graphite/β-PbO2 anode was prepared by anodic deposition method and the electrocatalytic properties of lead oxide film were studied by FESEM, XRD, EDX-mapping, linear sweep voltammetry and accelerated lifetime test techniques. The effect of five independent variables including pH, Na2SO4 concentration, current density, GAC amount, and reaction time on the system response was optimized by an orthogonal central composite-genetic algorithm (OCCD-GA). The results showed that β-PbO2 crystals were deposited as completely compact pyramidal clusters on the graphite surface. In addition, the service life and oxygen evolution potential (OEP) for the electrocatalytic layer of β-PbO2 were 90 h and 2 V, respectively. Based on the developed quadratic model (R2 > 0.99 and p-value

Enhanced electrocatalytic degradation of bisphenol A by graphite/β-PbO2 anode in a three-dimensional electrochemical reactor

Effect of indium doping on the PbO2 electrode for the enhanced electrochemical oxidation of aspirin: An electrode comparative study

Electrochemical removal of amoxicillin using a Cu doped PbO2 electrode: Electrode characterization, operational parameters optimization and degradation mechanism

This study presents a novel spinel-type zinc aluminate nanometer catalyst and is applied in catalytic ozonation for wastewater treatment. The zinc aluminate (ZnAl2O4) catalysts were synthesized by hydrothermal, sol–gel, and coprecipitation methods, and their characteristics were analyzed by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectrum, Fourier transform infrared, and X-ray photoelectron spectroscopy (XPS) techniques. 5-Sulfosalicylic acid (SSal) was selected as the typical pharmaceutical and personal care product and used to evaluate the catalytic activity of ZnAl2O4. Compared to ozonation, an obviously higher removal efficiency for the SSal degradation was achieved with the nanocatalyst addition in catalytic ozonation. The removal of SSal and chemical oxygen demand reached 64.8 and 46.2%, respectively, after 60 min in the presence of ZnAl2O4, whereas it was only 49.4 and 33.2%, respectively, in ozonation. The comparison of catalysts showed that the ZnAl2O4 prepare...

Catalytic Ozonation for the Degradation of 5-Sulfosalicylic Acid with Spinel-Type ZnAl2O4 Prepared by Hydrothermal, Sol-Gel, and Coprecipitation Methods: A Comparison Study.

Here a single-phase proton- and electron-conducting metal-organic coordination polymer (MOCP) electrocatalyst for CO2 reduction reaction (CO2RR) was constructed by using Ag as the metal center and 1H-1,2,3-triazole (Tz) as ligand....

Single-Phase Proton- and Electron-Conducting Ag-Organic Coordination Polymers for Efficient CO2 Electroreduction

Pharmaceutical and personal care products (PPCPs) had been detected worldwide as an emerging contaminant in the aquatic system. Herein, we reported a kind of NH2-functionalized UiO-66 which exhibited effective removal toward diflunisal and salicylic acid. The capacity of UiO-66-NH2 was much higher than commercial activated carbon (AC) for the adsorption of PPCPs and it was because UiO-66-NH2 had a smaller pore size than AC. The UiO-66-NH2 also indicated some interactions, like π–π stacking and electrostatic interaction. The removal efficiency of diflunisal and salicylic acid from wastewater with the UiO-66-NH2 groups was higher than the original UiO-66. It could be explained with the acid-base attraction between the NH2 group of UiO-66-NH2 and the COOH group of diflunisal and salicylic acid. However, the performance of UiO-66-NH2 in the adsorption of carbamazepine was not very desirable. The base–base repulsion between the NH2 group of UiO-66-NH2 and the NH2 group of carbamazepine led to a decrease in the adsorption capacity of UiO-66-NH2. The UiO-66-NH2 could be regenerated with ethanol and reused for the adsorption removal of the adsorbates.

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Tingting Zhan

Papers

Electrochemical removal of amoxicillin using a Cu doped PbO2 electrode: Electrode characterization, operational parameters optimization and degradation mechanism

Effect of indium doping on the PbO2 electrode for the enhanced electrochemical oxidation of aspirin: An electrode comparative study

Catalytic Ozonation for the Degradation of 5-Sulfosalicylic Acid with Spinel-Type ZnAl2O4 Prepared by Hydrothermal, Sol-Gel, and Coprecipitation Methods: A Comparison Study.

Single-Phase Proton- and Electron-Conducting Ag-Organic Coordination Polymers for Efficient CO2 Electroreduction

Adsorption removal of pharmaceutical and personal care products with functionalized metal-organic framework: adsorptive selectivity and mechanism