Electrochemical treatment of mature landfill leachate using Ti/RuO2–IrO2 and Al electrode: optimization and mechanism

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47509-47519 ◽  
Author(s):  
Juan Li ◽  
Zhao-hui Yang ◽  
Hai-yin Xu ◽  
Pei-pei Song ◽  
Jing Huang ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Landfill Leachate ◽  
Electrochemical Treatment ◽  
Oxidation Technology ◽  
Mature Landfill Leachate

Today, improving the elimination of refractory pollutants in landfill leachate through electrochemical oxidation technology has attracted considerable attention.

Degradation of Landfill Leachate by Combined Three-Dimensional Electrode and Electro-Fenton

2011 ◽  
Vol 347-353 ◽  
pp. 440-443 ◽  
Author(s):  
Yan Shi ◽  
Hai Chen Yu ◽  
Dan Yu Xu ◽  
Xian Qiang Zheng
Keyword(s):  
Reaction Mechanism ◽  
Electrochemical Oxidation ◽  
Landfill Leachate ◽  
Three Dimensional ◽  
Operating Conditions ◽  
Optimal Operating ◽  
Oxidation Technology ◽  
Iron Anode ◽  
Removal Efficiencies

Three-dimensional-electrode electro-Fenton is a newly electrochemical oxidation technology to treat landfill leachate. In contrast, the removal efficiencies of COD and color in DSA system are obviously higher than those in iron anode system and the organics can be degraded more thoroughly. Under the optimal operating conditions, the removal efficiencies of COD, NH3-N and color in landfill leachate by DSA system are up to 80.8% ,55.2% and 98.6％. Besides, the reaction mechanism of three-dimensional-electrode electro-Fenton is also discussed.

Electrochemical Oxidation of Perfluorooctanesulfonate by Magnéli Phase Ti4O7 Electrode in the Presence of Trichloroethylene

2020 ◽  
Vol 1 (4) ◽  
Author(s):  
Peizeng Yang ◽  
Yaye Wang ◽  
Junhe Lu ◽  
Viktor Tishchenko ◽  
Qingguo Huang ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Current Density ◽  
First Order ◽  
Degradation Rates ◽  
Oxidation Technology ◽  
Magnéli Phase ◽  
Polyfluoroalkyl Substances ◽  
Titanium Suboxide ◽  
Gas Tight ◽  
Magneli Phase

This study examined the degradation of perfluorooctanesulfonate (PFOS) in electrochemical oxidation (EO) processes in the presence of trichloroethylene (TCE). The EO experiment was performed in a gas-tight reactor using Magnéli phase titanium suboxide (Ti4O7) as the anode. The experimental data demonstrated that 75% of PFOS (2 μM) was degraded at 10 mA/cm2 current density in 30 min without TCE present in the solution, while the presence of 76 μM TCE apparently inhibited the degradation of PFOS, reducing its removal down to 53%. Defluorination ratio suggested that PFOS was significantly mineralized upon EO treatment, and it appeared to be not influenced by the presence of TCE. The respective pseudo-first order rate constants (kobs) of PFOS removal were 0.0471 and 0.0254 min-1 in the absence and presence of TCE. The degradation rates of both PFOS and TCE increased with current density rising from 2.5 to 20 mA/cm2. In the presence of TCE, chloride, chlorate, and perchlorate were formed that accounted for 79.7 %, 5.53%, and 1.51% of the total chlorine at 60 min. This work illustrates the promise of the Magnéli phase Ti4O7 electrode based electrochemical oxidation technology for degrading per- and polyfluoroalkyl substances (PFASs) and co-contaminants in groundwaters.

scholarly journals Mature landfill leachate treatment by denitrification and ozonation

2011 ◽  
Vol 46 (1) ◽  
pp. 148-153 ◽  
Author(s):  
Susana Cortez ◽  
Pilar Teixeira ◽  
Rosário Oliveira ◽  
Manuel Mota
Keyword(s):  
Landfill Leachate ◽  
Leachate Treatment ◽  
Mature Landfill Leachate

Electrochemical Treatment of Landfill Leachate:  Oxidation at Ti/PbO2and Ti/SnO2Anodes

1998 ◽  
Vol 32 (22) ◽  
pp. 3570-3573 ◽  
Author(s):  
Raffaello Cossu ◽  
Anna M. Polcaro ◽  
Maria C. Lavagnolo ◽  
Michele Mascia ◽  
Simonetta Palmas ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Electrochemical Treatment

Mature landfill leachate utilization using a cost-effective hybrid method

2018 ◽  
Vol 76 ◽  
pp. 652-662 ◽  
Author(s):  
Agnieszka Montusiewicz ◽  
Marta Bis ◽  
Sylwia Pasieczna-Patkowska ◽  
Dariusz Majerek
Keyword(s):  
Hybrid Method ◽  
Landfill Leachate ◽  
Cost Effective ◽  
Mature Landfill Leachate
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