首页|How to improve lead dioxide anodes performance in organic wastewater treatment: Review and prospect
How to improve lead dioxide anodes performance in organic wastewater treatment: Review and prospect
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NSTL
Lead dioxide (PbO2) is a common anode for wastewater treatment in electrochemical oxidation studies thanks to its high oxygen evolution potential, great hydroxyl radical productivity, and low cost. There has been much research focusing on PbO2 preparation and application from different perspectives in recent years. In this paper, with "PbO2 degradation performance optimization" as the clue, electrode modification strategy and operation condition are systematically reviewed, together with the standard evaluation indexes of electrical and electrochemical properties for PbO2. The electrodeposition processes can be divided into substrate and interlayer selection, electrodeposition bath adjustment, energy input modulation and new configuration introduction, impacting the catalytic activity and stability. Organic pollutants degradation is a significant application aspect of PbO2. Four major influence factors in the electrochemical degradation process are discussed, including external circuit control, co-existing ions, solution physicochemical properties and reactor configuration. Other couplings and combination technologies are introduced based on electrochemical oxidation with PbO2 anode. Further, the future research directions of PbO2 anode in wastewater treatment are forecasted.
NSTL
