Energy-efficient pulse electrochemical oxidation of Acid Blue 9 using a Ti/SnO2-Sb/α,β-Polytetrafluoroethylene-Fe-PbO2 electrode: Kinetics, mass transfer and mechanism

2021 ◽  
Vol 279 ◽  
pp. 119775
Author(s):  
Xiangjuan Ma ◽  
Yan Yan ◽  
Qizhou Dai ◽  
Jianxian Gao ◽  
Shengjue Liu ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Electrochemical Oxidation ◽  
Energy Efficient ◽  
Electrode Kinetics ◽  
Pbo2 Electrode ◽  
Acid Blue

scholarly journals Electrochemical oxidation of sulfamethoxazole using Ti/SnO2-Sb/Co-PbO2 electrode through ANN-PSO

2019 ◽  
Vol 84 (7) ◽  
pp. 713-727 ◽  
Author(s):  
Jiteng Wan ◽  
Chunji Jin ◽  
Banghai Liu ◽  
Zonglian She ◽  
Mengchun Gao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Oxidation ◽  
Removal Efficiency ◽  
Current Density ◽  
Ph Value ◽  
Ann Model ◽  
Solution Ph ◽  
Pbo2 Electrode ◽  
Artificial Neural Network Ann ◽  
Major Factors

Even in a trace amounts, the presence of antibiotics in aqueous solution is getting more and more attention. Accordingly, appropriate technologies are needed to efficiently remove these compounds from aqueous environments. In this study, we have examined the electrochemical oxidation (EO) of sulfamethoxazole (SMX) on a Co modified PbO2 electrode. The process of EO of SMX in aqueous solution followed the pseudo-first-order kinetics, and the removal efficiency of SMX reached the maximum value of 95.1 % within 60 min. The effects of major factors on SMX oxidation kinetics were studied in detail by single-factor experiments, namely current density (1?20 mA cm-2), solution pH value (2?10), initial concentration of SMX (10?500 mg L-1) and concentration of electrolytes (0.05?0.4 mol L-1). An artificial neural network (ANN) model was used to simulate this EO process. Based on the obtained model, particle swarm optimization (PSO) was used to optimize the operating parameters. The maximum removal efficiency of SMX was obtained at the optimized conditions (e.g., current density of 12.37 mA cm-2, initial pH value of 4.78, initial SMX concentration of 74.45 mg L-1, electrolyte concentration of 0.24 mol L-1 and electrolysis time of 51.49 min). The validation results indicated that this method can ideally be used to optimize the related parameters and predict the anticipated results with acceptable accuracy.

Electrochemical oxidation of pyrrole, pyrazole and tetrazole using a TiO2 nanotubes based SnO2-Sb/3D highly ordered macro-porous PbO2 electrode

2018 ◽  
Vol 826 ◽  
pp. 181-190 ◽  
Author(s):  
Xiezhen Zhou ◽  
Siqi Liu ◽  
Hongxia Yu ◽  
Anlin Xu ◽  
Jiansheng Li ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Tio2 Nanotubes ◽  
Pbo2 Electrode

Improved electrochemical oxidation of tricyclazole from aqueous solution by enhancing mass transfer in a tubular porous electrode electrocatalytic reactor

2016 ◽  
Vol 189 ◽  
pp. 1-8 ◽  
Author(s):  
Yonghao Zhang ◽  
Kajia Wei ◽  
Weiqing Han ◽  
Xiuyun Sun ◽  
Jiansheng Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Mass Transfer ◽  
Electrochemical Oxidation ◽  
Porous Electrode

Characterization of fluid dynamics and mass-transfer in an electrochemical oxidation cell by experimental and CFD studies

2010 ◽  
Vol 157 (2-3) ◽  
pp. 379-392 ◽  
Author(s):  
J.L.C. Santos ◽  
V. Geraldes ◽  
S. Velizarov ◽  
J.G. Crespo
Keyword(s):  
Fluid Dynamics ◽  
Mass Transfer ◽  
Electrochemical Oxidation

scholarly journals Adsorption Model for the Removal of Acid Dyes from Effluent by Bagasse Pith Using a Simplified Isotherm

1997 ◽  
Vol 15 (10) ◽  
pp. 737-752 ◽  
Author(s):  
Gordon McKay ◽  
Mohammed El-Geundi ◽  
Mamdouh M. Nassar
Keyword(s):  
Mass Transfer ◽  
Pore Diffusion ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Adsorption Model ◽  
Equilibrium Isotherms ◽  
Acid Dyes ◽  
Bagasse Pith ◽  
Diffusion Mass ◽  
Acid Blue

The adsorption of two acid dyes, viz. Acid Red AR114 and Acid Blue AB25, on to bagasse pith, a waste material from the sugar cane industry, has been studied. Equilibrium isotherms and agitated batch contact time studies have been carried out. A mass-transfer model has been used based on a Langmuir-type isotherm at maximum saturation. This simple or pseudo-irreversible isotherm and the assumption of pore diffusion enables a pore diffusion mass-transfer model to theoretically predict the experimental concentration decay curves very rapidly.

Efficiency of Different Mass Transfer Modes in Electrochemical Oxidation Treatment for Landfill Leachate

2012 ◽  
Vol 599 ◽  
pp. 60-66 ◽  
Author(s):  
Jin Guo Dai ◽  
Qian Wu Song ◽  
Qi Wu
Keyword(s):  
Mass Transfer ◽  
Energy Consumption ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Current Efficiency ◽  
Electrochemical Oxidation ◽  
Landfill Leachate ◽  
Oxidation Rate ◽  
Water Jet ◽  
Pressure Water

The effect of different mass transfer ways in landfill leachate treatment by electrochemical oxidation was studied, the electrochemical oxidation rate, current efficiency and energy consumption were mainly discussed by four different mass transfer ways—including higher pressure water jet electrode, aeration, mixing and natural convection. The results show that mass transfer way has an important influence for NH4+-N and CODcr removal in electrochemical oxidation landfill leachate, high pressure water jet has high current efficiency, oxidation rate and lower energy consumption, which is 7.41 mg/L.min, 48% and 0.11 Kwh/gNH4+-N in electrolytic 6 hours, respectively. Different mass transfer ways have different mass transfer coefficient, improving mass transfer coefficient could increase transfer rate and the overall efficiency of system.

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