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2018, Volume 12, Issue 1

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Frontiers of Environmental Science & Engineering >> 2018, Volume 12, Issue 1 doi: 10.1007/s11783-017-0970-2

Phenolic compounds removal by wet air oxidation based processes

. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China.. Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.. Institut de recherches sur la catalyse et l’environnement de Lyon (IRCELYON), CNRS, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France

Available online: 2017-07-12
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Abstract

Wet air oxidation (WAO) and catalytic wet air oxidation (CWAO) are efficient processes to degrade organic pollutants in water. In this paper, we especially reviewed the WAO and CWAO processes for phenolic compounds degradation. It provides a comprehensive introduction to the CWAO processes that could be beneficial to the scientists entering this field of research. The influence of different reaction parameters, such as temperature, oxygen pressure, pH, stirring speed are analyzed in detail; Homogenous catalysts and heterogeneous catalysts including carbon materials, transitional metal oxides and noble metals are extensively discussed, among which Cu based catalysts and Ru catalysts were shown to be the most active. Three different kinds of the reactor implemented for the CWAO (autoclave, packed bed and membrane reactors) are illustrated and compared. To enhance the degradation efficiency and reduce the cost of the CWAO process, biological degradation can be combined to develop an integrated technology.

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