Synergic degradation of reactive brilliant red X-3B using three dimension electrode-photocatalytic reactor

A Review of Photoelectrocatalytic Reactors for Water and Wastewater Treatment

The photoexcitation of suitable semiconducting materials in aqueous environments can lead to the production of reactive oxygen species (ROS). ROS can inactivate microorganisms and degrade a range of chemical compounds. In the case of heterogeneous photocatalysis, semiconducting materials may suffer from fast recombination of electron–hole pairs and require post-treatment to separate the photocatalyst when a suspension system is used. To reduce recombination and improve the rate of degradation, an externally applied electrical bias can be used where the semiconducting material is immobilised onto an electrically conducive support and connected to a counter electrode. These electrochemically assisted photocatalytic systems have been termed “photoelectrocatalytic” (PEC). This review will explain the fundamental mechanism of PECs, photoelectrodes, the different types of PEC reactors reported in the literature, the (photo)electrodes used, the contaminants degraded, the key findings and prospects in the research area.

Novel integrated carbon particle based three dimensional anodes for the electrochemical degradation of reactive dyes

Granular activated carbon (GAC) particles can be shaped into an integrated 3D-anode using PVDF binder and electro oxidation of reactive dyes in a three-dimensional flow-through carbon anode reactor (TDFCR) delivers a clean effluent free from carbon dust.