scholarly journals Electrodegradation of 2,4-dichlorophenoxyacetic acid herbicide from aqueous solution using three-dimensional electrode reactor with G/β-PbO2 anode: Taguchi optimization and degradation mechanism determination

RSC Advances ◽  
2018 ◽  
Vol 8 (69) ◽  
pp. 39256-39268 ◽  
Author(s):  
Abdollah Dargahi ◽  
Davood Nematollahi ◽  
Ghorban Asgari ◽  
Reza Shokoohi ◽  
Amin Ansari ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Degradation Mechanism ◽  
Three Dimensional ◽  
Dichlorophenoxyacetic Acid ◽  
Electrochemical Degradation ◽  
Taguchi Optimization ◽  
Optimization Of Process Parameters ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
2D And 3D ◽  
Pbo2 Anode

Optimization of process parameters using the Taguchi method, electrochemical degradation and electrochemical degradation mechanism of 2,4-D herbicide using 2D and 3D reactors with G/β-PbO2 anode were investigated.

scholarly journals Comparative Study of Four TiO2-Based Photocatalysts to Degrade 2,4-D in a Semi-Passive System

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 621 ◽  
Author(s):  
Gisoo Heydari ◽  
Jordan Hollman ◽  
Gopal Achari ◽  
Cooper Langford
Keyword(s):  
Energy Consumption ◽  
Degradation Rate ◽  
Light Emitting Diode ◽  
Three Dimensional ◽  
Dichlorophenoxyacetic Acid ◽  
Light Emitting ◽  
Glass Spheres ◽  
Degradation Rate Constant ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Mode Energy

In this study, the relative efficiency of four forms of supported titanium dioxide (TiO2) as a photocatalyst to degrade 2,4-dichlorophenoxyacetic acid (2,4-D) in Killex®, a commercially available herbicide was studied. Coated glass spheres, anodized plate, anodized mesh, and electro-photocatalysis using the anodized mesh were evaluated under an ultraviolet – light-emitting diode (UV-LED) light source at λ = 365 nm in a semi-passive mode. Energy consumption of the system was used to compare the efficiency of the photocatalysts. The results showed both photospheres and mesh consumed approximately 80 J/cm3 energy followed by electro-photocatalysis (112.2 J/cm3), and the anodized plate (114.5 J/cm3). Although electro-photocatalysis showed the fastest degradation rate (K = 5.04 mg L−1 h−1), its energy consumption was at the same level as the anodized plate with a lower degradation rate constant of 3.07 mg L−1 h−1. The results demonstrated that three-dimensional nanotubes of TiO2 surrounding the mesh provide superior degradation compared to one-dimensional arrays on the planar surface of the anodized plate. With limited broad-scale comparative studies between varieties of different TiO2 supports, this study provides a comparative analysis of relative degradation efficiencies between the four photocatalytic configurations.

Electrochemical degradation of triazole fungicides in aqueous solution using TiO2-NTs/SnO2-Sb/PbO2 anode: Experimental and DFT studies

2014 ◽  
Vol 130 ◽  
pp. 179-186 ◽  
Author(s):  
Weiqing Han ◽  
Congqiang Zhong ◽  
Linyue Liang ◽  
Yunlong Sun ◽  
Ying Guan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Dft Studies ◽  
Electrochemical Degradation ◽  
Triazole Fungicides ◽  
Tio2 Nts ◽  
Pbo2 Anode
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