Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 21, Issue 14, Pages 8336-8367Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-014-2783-1
Keywords
EAOPs; Anodic oxidation; Electro-Fenton; Photoelectrocatalysis; Photoelectro-Fenton; Sonoelectrochemistry; Water treatment
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In recent years, new advanced oxidation processes based on the electrochemical technology, the so-called electrochemical advanced oxidation processes (EAOPs), have been developed for the prevention and remediation of environmental pollution, especially focusing on water streams. These methods are based on the electrochemical generation of a very powerful oxidizing agent, such as the hydroxyl radical ((OH)-O-aEuro cent) in solution, which is then able to destroy organics up to their mineralization. EAOPs include heterogeneous processes like anodic oxidation and photoelectrocatalysis methods, in which (OH)-O-aEuro cent are generated at the anode surface either electrochemically or photochemically, and homogeneous processes like electro-Fenton, photoelectro-Fenton, and sonoelectrolysis, in which (OH)-O-aEuro cent are produced in the bulk solution. This paper presents a general overview of the application of EAOPs on the removal of aqueous organic pollutants, first reviewing the most recent works and then looking to the future. A global perspective on the fundamentals and experimental setups is offered, and laboratory-scale and pilot-scale experiments are examined and discussed.
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