scholarly journals Wastewaters by Electrochemical Advanced Oxidation Processes Using a BDD Anode and Electrogenerated H2O2 with Fe(II) and UVA Light as Catalysts

2007 ◽  
Vol 26 (1) ◽  
pp. 15-46 ◽  
Author(s):  
E Brillas ◽  
J A Garrido ◽  
R M Rodríguez ◽  
C Arias ◽  
P L Cabot ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes ◽  
Bdd Anode ◽  
Electrochemical Advanced Oxidation Processes ◽  
Uva Light

scholarly journals Improving the Treatment Efficiency and Lowering the Operating Costs of Electrochemical Advanced Oxidation Processes

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1482
Author(s):  
Thorben Muddemann ◽  
Rieke Neuber ◽  
Dennis Haupt ◽  
Tobias Graßl ◽  
Mohammad Issa ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Gas Diffusion ◽  
Stainless Steel Electrode ◽  
Boron Doped Diamond ◽  
Steel Electrode ◽  
Oxidation Processes ◽  
Bdd Anode ◽  
Electrochemical Advanced Oxidation Processes

Electrochemical advanced oxidation processes (EAOP®) are promising technologies for the decentralized treatment of water and will be important elements in achieving a circular economy. To overcome the drawback of the high operational expenses of EAOP® systems, two novel reactors based on a next-generation boron-doped diamond (BDD) anode and a stainless steel cathode or a hydrogen-peroxide-generating gas diffusion electrode (GDE) are presented. This reactor design ensures the long-term stability of BDD anodes. The application potential of the novel reactors is evaluated with artificial wastewater containing phenol (COD of 2000 mg L−1); the reactors are compared to each other and to ozone and peroxone systems. The investigations show that the BDD anode can be optimized for a service life of up to 18 years, reducing the costs for EAOP® significantly. The process comparison shows a degradation efficiency for the BDD–GDE system of up to 135% in comparison to the BDD–stainless steel electrode combination, showing only 75%, 14%, and 8% of the energy consumption of the BDD–stainless steel, ozonation, and peroxonation systems, respectively. Treatment efficiencies of nearly 100% are achieved with both novel electrolysis reactors. Due to the current density adaptation and the GDE integration, which result in energy savings as well as the improvements that significantly extend the lifetime of the BDD electrode, less resources and raw materials are consumed for the power generation and electrode manufacturing processes.

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