2013
DOI: 10.1021/co400046g
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Development of a Biphasic Electroreactor with a Wet Scrubbing System for the Removal of Gaseous Benzene

Abstract: An efficient, continuous flow electroreactor system comprising a scrubbing column (for absorption) and a biphasic electroreactor (for degradation) was developed to treat gas streams containing benzene. Initial benzene absorption studies using a continuous flow bubble column containing absorbents like 40% sulfuric acid, 10% silicone oil (3, 5, 10 cSt), or 100% silicone oil showed that 100% silicone oil is the most suitable. A biphasic batch electroreactor based on 50 mL of silicone oil and 100 mL of activated C… Show more

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Cited by 16 publications
(12 citation statements)
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“…In recent investigations, the electrochemical technique stepped towards industrial practice for air pollutants removal by adopting paired electrolysis with wet scrubber column. Through the combination of paired electrolysis and wet scrubbing (electroscrubbing), many gas pollutants, such as benzene [30] and odorous gases [31] have been removed using electrogenerated oxidative mediators by MEO (mediated electrochemical oxidation). In addition, homogeneous [Ni(I)(CN)4] 3was generated electrochemically on a Cu metal electrode at cathodic half-cell by constant current electrolysis for the first time and used to remove gaseous CCl4 by MER (mediated electrochemical reduction) at electroscrubbing [32].…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…In recent investigations, the electrochemical technique stepped towards industrial practice for air pollutants removal by adopting paired electrolysis with wet scrubber column. Through the combination of paired electrolysis and wet scrubbing (electroscrubbing), many gas pollutants, such as benzene [30] and odorous gases [31] have been removed using electrogenerated oxidative mediators by MEO (mediated electrochemical oxidation). In addition, homogeneous [Ni(I)(CN)4] 3was generated electrochemically on a Cu metal electrode at cathodic half-cell by constant current electrolysis for the first time and used to remove gaseous CCl4 by MER (mediated electrochemical reduction) at electroscrubbing [32].…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…V 3þ þ Ce 3þ 4V 2þ þ Ce 4þ E cell ¼ þ1:54 V to þ 1:98 V vs: SHE (3) Prior to this work, the initial concept of vanadiumecerium RFB was introduced by Xia et al [19,20] in 2002. Since then, the performance of the vanadiumecerium RFB has only been evaluated by Fang et al [13] and Govindan et al [21,22] in single acid media with different electrode materials. Although the open-circuit voltage was up to 1.87 V, the solubility of the Ce(III) ion in sulfuric acid electrolytes is still too low (<0.3 mol dm À3 ) for practical energy storage applications.…”
Section: Introductionmentioning
confidence: 99%
“…Electrochemical mediators/electrocatalysts play a pivotal role in a variety of distinct fields, such as photoelectrocatalytic water-splitting devices, fuel cells, aerobic redox reactions, , amperometric sensors and biosensors, , and pollutant degradation. Electrochemical mediators/electrocatalysts operate by catalyzing the desired electrochemical reaction by shuttling electrons between the electrode and the substrate in solution, thereby exhibiting catalytic onset at a comparatively low overpotential and, thus, improving the energy efficiency. Ideally, the redox active mediators should be efficient, long-lived, highly active, and inexpensive.…”
Section: Introductionmentioning
confidence: 99%
“…The degradation of ubiquitous pollutants by mediated electrooxidation (MEO) uses metal ion redox couples with a very high standard reduction potential (e.g., Ag 2+ , Co 3+ , Ce 4+ , Mn 3+ ) as mediators. The MEO is an outer-cell process in which the oxidized form of the mediator is continuously fed into a pollutant-containing scrubber column to effect the pollutant degradation, and the spent mediator is electroregenerated again at the anode of a divided/undivided cell in a closed cycle using paired electrolysis. The MEO has a wide range of applications because the continuous regeneration of the active component of the redox system in the electrochemical cell and its recirculation through the scrubber column ensure its sustainable operation.…”
Section: Introductionmentioning
confidence: 99%
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