Submerged Arc Breakdown of Methylene Blue in Aqueous Solutions

Parkansky, N.; Vegerhof, Adi; Alterkop, B.; Berkh, O.; Boxman, R.L.

doi:10.1007/s11090-012-9385-9

Cited by 19 publications

(12 citation statements)

References 43 publications

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“…At treatment time of 2 to 4 min, plasma treatment using grafit electrode show the highest degradation. During plasma generation with high voltage, grafit which is consist of C-C bond might be broken and react to decompose the methylene blue [6]. Furthemore, for all electrode materials, after conducting the plasma treatment for 8 min, the absorbance reduction reached 99%.…”

Section: Methodsmentioning

confidence: 99%

Water Treatment Using Plasma Discharge with Variation of Electrode Materials

Chanan

Kusumandari

Saraswati

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Section: Methodsmentioning

confidence: 99%

Water Treatment Using Plasma Discharge with Variation of Electrode Materials

Chanan

Kusumandari

Saraswati

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…To our knowledge, all arc electrohydraulic discharge reactors reported in literature have pulsed input power. Mostly, a rod-to-rod electrode configuration is used (Figure 2a), but there are also reports on a reactor with a grounded L-shaped stationary electrode and a vibrating rod electrode ( Figure 2b) [51,52]. As learned from personal communication with Dr. Naum Parkansky, the vibrating electrode has the purpose to facilitate electrical breakdown and mix the treated solution.…”

Section: Electrohydraulic Discharge Reactorsmentioning

confidence: 99%

“…The authors explained this enhancement with titanium peroxide formation from interaction of H 2 O 2 with the particle surface [55]. In contrast, particles that eroded from low carbon steel electrodes diminished the decomposition of the same pollutant, possibly through the catalytic decomposition of H 2 O 2 and scavenging of OH radicals [52]. While an increasing energy efficiency is reported for the decomposition of 2,4,6-trinitrotoluene [56] and methyltert-butyl ether [57] when the electrode gap is reduced, the opposite effect has been observed for atrazine degradation in another study [58].…”

Section: Electrohydraulic Discharge Reactorsmentioning

confidence: 99%

Electrical Discharge in Water Treatment Technology for Micropollutant Decomposition

Vanraes¹,

Nikiforov²,

Leys³

2016

Plasma Science and Technology - Progress in Physical States and Chemical Reactions

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Hazardous micropollutants are increasingly detected worldwide in wastewater treatment plant effluent. As this indicates, their removal is insufficient by means of conventional modern water treatment techniques. In the search for a cost-effective solution, advanced oxidation processes have recently gained more attention since they are the most effective available techniques to decompose biorecalcitrant organics. As a main drawback, however, their energy costs are high up to now, preventing their implementation on large scale. For the specific case of water treatment by means of electrical discharge, further optimization is a complex task due to the wide variety in reactor design and materials, discharge types, and operational parameters. In this chapter, an extended overview is given on plasma reactor types, based on their design and materials. Influence of design and materials on energy efficiency is investigated, as well as the influence of operational parameters. The collected data can be used for the optimization of existing reactor types and for development of novel reactors.

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“…Destruction of various organic pollutants dissolved in water and specific reactions in liquid phase are actually the main research fields of discharges in liquids and in contact with liquids . Among many degradable pollutants, organic dyes have a special position because their degradation is followed by a naked‐eye visible discoloration, which is often used for an easy estimation of plasma source efficiency . For organic dyes removal, various hybrid gas‐liquid systems including water films, bubbles, or foams were developed besides the liquid reactors …”

Section: Introductionmentioning

confidence: 99%

Comparison of liquid and liquid‐gas phase plasma reactors for discoloration of azo dyes: Analysis of degradation products

Kozáková

Klimova

Obradović

et al. 2018

Plasma Processes & Polymers

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Three plasma systems are used for decomposition of two organic textile dyes. The highest discoloration efficiency over 90% is reached in the water falling film DBD when maximal energy of 270 and 450 kJ L−1 is applied into Reactive Yellow 125 and Direct Red 79 dye solutions, respectively. Decomposition of the dye molecules is confirmed by concentration decreases in dye chromatograms. Similar degradation products are identified in the positive diaphragm discharge and water falling film DBD. In the negative diaphragm discharge, different products are formed due to electrochemical reactions on the anode. Substitution of halogens, hydrogen addition on the azo group and the cleavage of the azo group itself are the main mechanisms contributing to the destruction of the dye molecule in the compared plasma systems.

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Submerged Arc Breakdown of Methylene Blue in Aqueous Solutions

Cited by 19 publications

References 43 publications

Water Treatment Using Plasma Discharge with Variation of Electrode Materials

Water Treatment Using Plasma Discharge with Variation of Electrode Materials

Electrical Discharge in Water Treatment Technology for Micropollutant Decomposition

Comparison of liquid and liquid‐gas phase plasma reactors for discoloration of azo dyes: Analysis of degradation products

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