Role of electrode materials for the anodic oxidation of a real landfill leachate – Comparison between Ti–Ru–Sn ternary oxide, PbO2 and boron-doped diamond anode

Panizza, Marco; Martínez‐Huitle, Carlos A.

doi:10.1016/j.chemosphere.2012.09.006

Cited by 150 publications

(71 citation statements)

References 45 publications

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“…High-quality BDD electrodes with excellent electrochemical property deposition on niobium (Nb) substrates by the hot filament chemical vapor deposition (HFCVD) method are an effective technique for landfill leachate treatment, as 87.5% COD and 74.06% NH 4 -N removal were achieved after 6 h treatment, with a specific energy consumption of 223.2 kWh·m −3 . BDD is confirmed as the most studied, followed by Ti/PbO 2 , Ti/RuO 2 -IrO 2 and graphite [147]. However, the treatment effectiveness, as for EC, depends on the electrode material, voltage, current density and pH [145,148].…”

Section: Electro-oxidationmentioning

confidence: 99%

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

et al. 2016

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Abstract:Municipal solid waste final disposal represents an environmental burden worldwide since landfilling, or open dumping, is still the preferred solution for the end of life of solid discarded materials. This study aims to review the technological innovations applied for landfill leachate treatment, taking into consideration the experiences obtained during the past years and the solutions which have been implemented. The review showed that both biological and physiochemical treatments are not able to achieve the requested water quality level, according to the limits established by regulations, whether applied in a single treatment or multiple treatments. In order to respect sustainable release limits to guarantee environmental protection, the construction of depuration systems and combining biological and physiochemical treatment methods is considered of the utmost importance. The review looks at possible joint applications of different treatment techniques reviewed by other studies and considers the state of the art of current research. Combined technical solutions suggested within the 2016 peer-reviewed papers are presented and discussed as a sustainable way to effectively treat landfill leachate, giving particular attention to feasible solutions for developing countries.

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Section: Electro-oxidationmentioning

confidence: 99%

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

et al. 2016

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“…Different low-cost electrode materials have been studied for the AO process, and, among them, metal oxides have shown promising results, even when used to treat complex effluents (Lin et al 2012;Lin et al 2013b;Panizza and Martinez-Huitle 2013;Fernandes et al 2014). Still, optimization of the AO wastewater treatment is required, to reduce the energy consumptions.…”

Section: Introductionmentioning

confidence: 98%

Electrochemical wastewater treatment: influence of the type of carbon and of nitrogen on the organic load removal

Fernandes

Coelho

Ciríaco

et al. 2016

Environ Sci Pollut Res

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Boron-doped diamond (BDD) and Ti/Pt/PbO anodes were utilized to perform the electrodegradation of synthetic samples containing humic acid in the presence of different organic and inorganic carbon-containing and nitrogen-containing compounds. The influence of the chloride ion in the degradation process of the different synthetic samples was also assessed. The results showed that the anodic oxidation process can efficiently degrade recalcitrant compounds such as humic acid. The presence of carbonate in solution enhances the nitrogen removal, whereas it hinders the oxidation of the organic compounds. When organic nitrogen is present, it is converted to NH, which in turn is oxidized to nitrate and to volatile nitrogen compounds. Hydroxyl radicals are more prone to oxidize the organic nitrogen than the ammonium nitrogen. The presence of chloride enhances the organic matter and nitrogen removal rates, BDD being the anode material that yields the highest removals.

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“…Very high values of power consumption were found, about ten times higher than previously reported data [41]. This is a demonstration that electro-oxidation is very sensible to the materials adopted at the electrodes.…”

Section: Results Of the Leachate Samplesmentioning

confidence: 40%

Seeking Potential Anomalous Levels of Exposure to PCDD/Fs and PCBs through Sewage Sludge Characterization

2016

Sewage and Landfill Leachate

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This paper examines the efficiency of electro-oxidation used as the single pretreatment of landfill leachate. The experiments were performed on three different types of leachate. The results obtained using this electrochemical method results were analyzed after seven days of treatment. The main characteristics of leachate and a diagram of the experimental apparatus are presented. The overall objectives were to contribute to the knowledge of electrochemical treatments for the reduction of COD, BOD 5 , ammonium, and total suspended solids, and also to examine whether there was any resulting hexavalent chromium in the liquid sample. The yields obtained were considered satisfactory, particularly given the simplicity of this technology. Like all processes used to treat refluent water, the applicability of this technique to a specific industrial refluent needs to be supported by feasibility studies to estimate its effectiveness and optimize the project parameters. This could be a future development of the work.

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Role of electrode materials for the anodic oxidation of a real landfill leachate – Comparison between Ti–Ru–Sn ternary oxide, PbO2 and boron-doped diamond anode

Cited by 150 publications

References 45 publications

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

Electrochemical wastewater treatment: influence of the type of carbon and of nitrogen on the organic load removal

Seeking Potential Anomalous Levels of Exposure to PCDD/Fs and PCBs through Sewage Sludge Characterization

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