Electrochemical Oxidation for the Degradation of Organic Pollutants on a Novel PbO&lt;sub&gt;2&lt;/sub&gt; Anode

Zhou, Ming‐Dong; 浙江大学环境工程研究所, 杭州; Dai, Qizhou; Lei, Lecheng; Wu, Zucheng; Ma, Chao; Wang, Dahui

doi:10.3866/pku.whxb20040818

Acta Physico-Chimica Sinica

2004

DOI: 10.3866/pku.whxb20040818

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Electrochemical Oxidation for the Degradation of Organic Pollutants on a Novel PbO<sub>2</sub> Anode

Ming‐Dong Zhou¹,

杭州浙江大学环境工程研究所²,

Qizhou Dai³

et al.

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“…The reaction interface was studied, and a novel layered composite electrode material with high strength, high strength, insolubilization and high corrosion resistance was prepared. [18][19][20][21][22] Li Ling 23 prepared a carbon fiber matrix lead dioxide electrode. The degradation rate of metaphthalonitrile wastewater reached 82.2%, indicating that the carbon fiber based lead dioxide electrode has good electrocatalytic performance and has better stability.…”

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Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Liu

Zhi-jun

2020

ECS J. Solid State Sci. Technol.

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In this study, the β-PbO2 active layer was deposited on the surface of the carbon fiber cloth by electrodeposition. The CF/β-PbO2 electrode was investigated by scanning electron microscopy (SEM), anodic polarization curves, Tafel curves, and a four-probe method. It was found that a uniform and flattened dense β-PbO2 active layer is obtained when the concentration of Pb(NO3)2 is 150 g l−1. The deposition quality of the active layer of β-PbO2 particles in the carbon fiber is affected by the concentration of Pb(NO3)2, thereby affecting the interfacial bonding strength between the active layer and the carbon fiber. The weightlessness rate of the carbon fiber substrate electrode materials with Pb(NO3)2 concentration of 150 g l−1 are the smallest. The interface resistivity of the CF/β-PbO2 electrode sample with Pb(NO3)2 concentration of 150 g l−1 is 6.71 × 10−5 Ω·m and is smallest. The CF/β-PbO2 electrode prepared under the 150 g l−1 has the smallest oxygen evolution potential and is 2.335 V. When the concentration of Pb(NO3)2 is 150 g l−1, the prepared CF/β-PbO2 electrode has the largest corrosion potential (1.085 V) and the minimum corrosion current (2.074 × 10−4 A · cm−2).

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confidence: 99%

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Liu

Zhi-jun

2020

ECS J. Solid State Sci. Technol.

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Activated carbon adsorption-advanced electro-oxidative regeneration for the treatment of biorefractory organic pollutants

et al. 2005

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A novel advanced oxidation process—wet electro-catalytic oxidation for high concentrated organic wastewater treatment

et al. 2007

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A novel advanced oxidation process --wet electrocatalytic oxidation (WEO) was studied with p-nitrophenol as model pollutant and β-PbO 2 electrode as the anode. Compared with the effect of the individual wet air oxidation (WAO) and electrochemical oxidation (EO), the effect of WEO showed synergistic effect on COD removal under the conditions of temperature 160℃, C=1000 mg·L −1 , P N 2 =0.50 MPa, P O 2 =0.9 MPa, current density = 3 mA·cm −2 , Na 2 SO 4 3 g·L −1 . And the synergistic factor got the best value of 0.98 within 120 min after 180 min treatment. The synergistic factor was studied after 120 min treatment at 100℃, 120℃, 140℃ and 160℃, and the effect of 120℃ was the best with the value of 1.26. Possible mechanism for the synergistic effect was discussed based on the analysis of free-radical generation and intermediates detected by HPLC and GC/MS. wet air oxidation, electrochemical oxidation, wet electrocatalytic oxidation, synergistic effectThe wastewater containing high concentrated aromatic compounds cannot be treated effectively by conventional biological or physical-chemical treatment due to their structure stability, bio-resistance and strong toxicity. It has been one of the key technical difficulties in wastewater treatment for a long time in China. At present, wet air oxidation (WAO) and electrochemical oxidation (EO) are two ways dealing with organic wastewater [1][2][3][4][5] .WAO is an effective method dealing with many types of high concentrated organic wastewaters with some equipments application in industry [1,2] , but the application of this process is limited for the harsh operational conditions of high temperature and high pressure [1,6] . Recently, catalytic wet air oxidation (CWAO) is extensively studied to lower the operational conditions and some improvements have been achieved. But the introduction of catalysts, the applicability and toxicity of the catalysts should be carefully considered [7] . So, CWAO is still far from solution due to the second pollution and the declination of treatment efficiency. Sound processes with less rigorous operational conditions, being more efficient for high-concentrated organic wastewater treatments without second pollution are urgently required.Electrochemical oxidation (EO) is a newly advanced oxidation process and has been one of the key technologies of wastewater treatment for its high efficiency, being friendly to environment and easy facility. But present researches showed that it could only work well to the organic wastewater of low concentrated and less efficiency to that of high concentrated [8,9] .Based on the review of these two technologies, this paper tries to combine the advantages of WAO and EO at relative moderate conditions, and uses wet electro-

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Electrochemical Oxidation for the Degradation of Organic Pollutants on a Novel PbO<sub>2</sub> Anode

Cited by 10 publications

References 0 publications

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Activated carbon adsorption-advanced electro-oxidative regeneration for the treatment of biorefractory organic pollutants

A novel advanced oxidation process—wet electro-catalytic oxidation for high concentrated organic wastewater treatment

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Electrochemical Oxidation for the Degradation of Organic Pollutants on a Novel PbO<sub>2</sub> Anode

Cited by 10 publications

References 0 publications

Effect of Pb(NO3)2 on Preparation and Properties of CF/β-PbO2 Electrodes for Zinc Electrowinning

Effect of Pb(NO3)2 on Preparation and Properties of CF/β-PbO2 Electrodes for Zinc Electrowinning

Activated carbon adsorption-advanced electro-oxidative regeneration for the treatment of biorefractory organic pollutants

A novel advanced oxidation process—wet electro-catalytic oxidation for high concentrated organic wastewater treatment

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Product

Resources

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Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning