2009
DOI: 10.1149/1.3072686
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Electrochemical Generation of Ozone in a Membrane Electrode Assembly Cell with Convective Flow

Abstract: Highly efficient electrochemical generation of ozone on doped tin dioxide anodes was reported recently. Here, we report the scale up of such ozone generation on a membrane electrode assembly (MEA) made with 8×13cm –doped tin dioxide anode. The effects of water flow rate, operating voltage, and current on dissolved ozone concentration, ozone production, current efficiency, and energy efficiency are reported. Ozone production and current efficiency increased with water flow. Operating with a single MEA, 218mg∕… Show more

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Cited by 38 publications
(31 citation statements)
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“…These include RuO 2 , IrO 2 , PbO 2 and SnO 2 that are widely used in areas such as chlorine production, water electrolysis, ozone production, and electro-oxidation of organics in wastewater treatment. [1][2][3][4][5] For wastewater treatment, an electrode material having high efficiency and selectivity toward oxidation of organic compounds is desired.One candidate electrode material is the antimony doped tin oxide on Ti. This electrode is generally written as Ti/SnO 2 -Sb 2 O 5 .…”
mentioning
confidence: 99%
“…These include RuO 2 , IrO 2 , PbO 2 and SnO 2 that are widely used in areas such as chlorine production, water electrolysis, ozone production, and electro-oxidation of organics in wastewater treatment. [1][2][3][4][5] For wastewater treatment, an electrode material having high efficiency and selectivity toward oxidation of organic compounds is desired.One candidate electrode material is the antimony doped tin oxide on Ti. This electrode is generally written as Ti/SnO 2 -Sb 2 O 5 .…”
mentioning
confidence: 99%
“…Recent studies indicate that the co-doped SnO 2 -Sb-X electrodes (X represents Pt, Ni, Co, etc.) have better performance or some special properties in an electrocatalytic process [20][21][22]. The previous investigations by our group have found that proper doping the Sb-SnO 2 anode with REs metal ions can improve the electrocatalytic oxidation rate of phenol [23]; further analysis suggested that the better performance of REs doped Sb-SnO 2 anodes is aroused from the increased production of active oxygen species (e.g.…”
Section: Introductionmentioning
confidence: 88%
“…But the testing of these anodes on synthetic or real wastewater samples are too limited in literature. [7,8,9,10,11,12]. Current technology in ozone production utilizes several techniques [13] but in situ ozone can be generated by following technologies: (i) Corona discharge (dielectric barrier discharge); (ii) UV irradiation (photochemistry) and (iii) Electrochemical ozone production (electrolysis of aqueous solutions) [9,14] Corona process, which is the traditional way to produce ozone, utilizes electrical discharges.…”
Section: Introductionmentioning
confidence: 99%
“…The second type of ozone generation is UV irradiation at 185 nm but ozone concentration is lower and enery consumption is higher than corona discharge. Also periodic replacement of UV lamps makes additional expenses [12]. And the third type ozone generation is electrochemical process where water is used as electrolyte and at anode and cathode water dissociates into hydrogen and oxygen ( See Eqs.…”
Section: Introductionmentioning
confidence: 99%
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