Journal Article

Electrochemical advanced oxidation processes: today and tomorrow. A review

Sirés, Ignasi, Brillas, Enric, Panizza, Marco, Rodrigo, Manuel A, Oturan, Mehmet A

2014

Overview

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) 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 are generated at the anode surface either electrochemically or photochemically, and homogeneous processes like electro-Fenton, photoelectro-Fenton, and sonoelectrolysis, in which •OH 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.

• Publisher: Springer-Verlag,Springer Berlin Heidelberg,Springer Nature B.V,Springer Verlag
• Subject: Aquatic Pollution / Atmospheric Protection/Air Quality Control/Air Pollution / Carbon / Chemical oxygen demand / Chlorine / Earth and Environmental Science / Ecotoxicology / Electrochemical Advanced Oxidation Processes for Removal of Toxic/Persistent Organic Pollutants from Water / Electrochemical Techniques / Electrochemistry / electrodes / Environment / Environmental Chemistry / Environmental Health / Environmental impact / Experiments / Hydrogen peroxide / Hydroxyl radicals / Mineralization / oxidants / Oxidants - chemistry / Oxidation / Oxidation-Reduction / Oxidizing agents / Persistent organic pollutants / Pollutants / remediation / streams / Studies / Toxicity / Ultrasonic imaging / Waste Water Technology / Water Management / Water Pollutants - chemistry / Water pollution / Water Pollution Control / Water Purification - methods / Water treatment