Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 235, Issue -, Pages 103-129Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2018.04.044
Keywords
Heterogeneous electro-Fenton process; Heterogeneous/solid catalyst; Functionalized cathodic materials; Bioelectro-Fenton system; Biorefractory organic pollutants
Funding
- National Council for Scientific and Technological Development [CNPq - 465571/2014-0, CNPq - 446846/2014-7, CNPq - 401519/2014-7]
- FAPESP [2014/50945-4]
- Natural Science Foundation of China [21773129, 91545126]
- China National Water Project [2015ZX07203-11]
- Alexander von Humboldt Foundation (Germany)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (Brazil) at the Johannes Gutenberg-Universitat Mainz, Germany [88881.136108/2017-01]
Ask authors/readers for more resources
This exhaustive review focuses on the fundamental principles and applications of heterogeneous electrochemical wastewater treatment based on Fenton's chemistry reaction. The elementary equations involved in formation of hydroxyl radical in homogeneous electro-Fenton (EF) and photo electro-Fenton (PEF) processes was presented and the advantages of using insoluble solids as heterogeneous catalyst rather than soluble iron salts (heterogeneous electro-Fenton process) (Hetero-EF) was enumerated. Some of the required features of good heterogeneous catalysts were discussed, followed by the mechanisms of catalytic activation of H2O2 to reactive oxygen species (ROS) especially hydroxyl radical (center dot OH) by heterogeneous catalyst in Hetero-EF system. Extensive discussion on the two configuration of Hetero-EF system vis-a-vis added solid catalysts and functionalized cathodic materials were provided along with summaries of some relevant studies that are available in literature. The solid catalysts and the functionalized cathodic materials that have been utilized in Hetero-EF wastewater treatment were grouped into different classes and brief discussion on their synthesis route were given. Besides, the use of solid catalysts and iron-functionalized cathodic materials in bioelectrochemical system (BES) especially bioelectro-Fenton technology (BEF) using microbial fuel cells (MFCs) with concurrent electricity generation for Hetero-EF treatment of biorefractory organic pollutants was discussed. In the final part, emphasis was made on the challenges and future prospects of the Hetero-EF for wastewater treatment.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available