Long Life Modified Lead Dioxide Anode for Organic Wastewater Treatment:  Electrochemical Characteristics and Degradation Mechanism

2005 ◽  
Vol 39 (1) ◽  
pp. 363-370 ◽  
Author(s):  
Minghua Zhou ◽  
Qizhou Dai ◽  
Lecheng Lei ◽  
Chun'an Ma ◽  
Dahui Wang
Keyword(s):  
Wastewater Treatment ◽  
Degradation Mechanism ◽  
Lead Dioxide ◽  
Electrochemical Characteristics ◽  
Lead Dioxide Anode ◽  
Long Life ◽  
Organic Wastewater

The Lead Dioxide Anode. II. The Kinetics and Participation of the Lead Dioxide Electrode in Electrochemical Oxidation Reactions in Sulfuric Acid

1989 ◽  
Vol 42 (9) ◽  
pp. 1527 ◽  
Author(s):  
TH Randle ◽  
AT Kuhn
Keyword(s):  
Sulfuric Acid ◽  
Electrochemical Oxidation ◽  
Maximum Rate ◽  
Lead Dioxide ◽  
Chemical Oxidation ◽  
Oxidation Reactions ◽  
Electrochemical Regeneration ◽  
Electrode Surfaces ◽  
Lead Dioxide Electrode ◽  
Lead Dioxide Anode

Lead dioxide is a strong oxidizer in sulfuric acid, consequently electrochemical oxidation of solution species at a lead dioxide anode may occur by a two-step, C-E process (chemical oxidation of solution species by PbO2 followed by electrochemical regeneration of the reduced lead dioxide surface). The maximum rate of each step has been determined in sulfuric acid for specified lead dioxide surfaces and compared with the rates observed for the electrochemical oxidation of cerium(III) and manganese(II) on the same electrode surfaces. While the rate of electrochemical oxidation of a partially reduced PbO2 surface may be sufficient to support the observed rates of CeIII and MnII oxidation at the lead dioxide anode, the rate of chemical reaction between PbO2 and the reducing species is not. Hence it is concluded that the lead dioxide electrode functions as a simple, 'inert' electron-transfer agent during the electrochemical oxidation of CellI and MnII in sulfuric acid. In general, it will most probably be the rate of the chemical step which determines the feasibility or otherwise of the C-E mechanism.

Tuning the defects and luminescence of ZnO:(Er, Sm) nanoflakes for application in organic wastewater treatment

2019 ◽  
Vol 30 (17) ◽  
pp. 15869-15879 ◽  
Author(s):  
Zhe Zhang ◽  
Yuxin Song ◽  
Si Wu ◽  
Jiale Guo ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Organic Wastewater

Organic Wastewater Treatment and Concentration by Sorption Combined with Microfiltration

2018 ◽  
Vol 40 (5) ◽  
pp. 302-306 ◽  
Author(s):  
A. V. Fedotov ◽  
V. S. Grigoriev ◽  
A. A. Svittsov
Keyword(s):  
Wastewater Treatment ◽  
Organic Wastewater

scholarly journals Synthesis of Magnetic Targeted Cellulose Composite Decorated with Poly(AA-DMC) for Synergistic Adsorption Degradation of Congo Red from Organic Wastewater

2021 ◽  
Author(s):  
Chen Ling ◽  
Dai Yimin ◽  
Lu Qi ◽  
Fang Chengqian ◽  
Wang Zhiheng ◽  
...  
Keyword(s):  
Congo Red ◽  
Magnetic Particles ◽  
Degradation Mechanism ◽  
Degradation Of Dyes ◽  
Cellulose Composites ◽  
Natural Cellulose ◽  
The Stability ◽  
Adsorption Desorption ◽  
Cr Removal ◽  
Organic Wastewater

Abstract A brand-new environmental-friendly magnetic cellulosic adsorbent MnFe2O4@Cel-g-p(AA-DMC) was synthesized by natural cellulose and easy-recovered magnetic particles MnFe2O4. Magnetic cellulose composites were characterized by SEM, TEM, XPS, XRD, BET, VSM, TGA and FTIR. The MnFe2O4NPs could activate the peroxymonosulfate (PMS) to produce various reactive oxygen species (ROS). Accordingly, magnetic cellulose composites can synergistic adsorption degradation of dyes from organic wastewater. The Congo red (CR) removal efficiency by MnFe2O4@Cel-g-p(AA-DMC) via PMS activated by MnFe2O4 reached a maximum of 96.9% and only 9% reduction after four adsorption-desorption cycles, indicating the stability and recoverability of adsorbent. It is worth noting that adsorbents can be quickly recovered from aqueous solution by external magnet owing to superior saturation magnetization (35.44 emu·g-1). A possible degradation mechanism of CR on the MnFe2O4@Cel-g-p(AA-DMC) composite was proposed. The results suggest that adsorbent display strong potential for the removal of CR dyes from organic wastewater.

scholarly journals The influence of ultrasound on nucleation in electrodeposition of lead dioxide on a nickel substrate

2021 ◽  
Vol 21 (2) ◽  
pp. 108-113
Author(s):  
Vasiliy A. Korotkov ◽  
◽  
Varvara I. Shpekina ◽  
Nina D. Solovyova ◽  
◽  
...  
Keyword(s):  
Lead Dioxide ◽  
Ultrasonic Field ◽  
Electrochemical Characteristics ◽  
Nickel Substrate ◽  
Power Sources

The effect of ultrasound on the electrodeposition of lead dioxide from lead (II) nitrate on a nickel substrate was studied. It was shown that the highest electrochemical characteristics are observed for the prototypes of backup power sources based on the Pb/HClO4/PbO2 system, in which lead dioxide obtained by electrodeposition under the influence of an ultrasonic field on a nickel substrate was used.

Lead Dioxide Anode for Commercial Use

1958 ◽  
Vol 105 (2) ◽  
pp. 100 ◽  
Author(s):  
J. C. Grigger ◽  
H. C. Miller ◽  
F. D. Loomis
Keyword(s):  
Lead Dioxide ◽  
Commercial Use ◽  
Lead Dioxide Anode
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