100kW steam plasma process for treatment of PCBs (polychlorinated biphenyls) waste

Kim, Seok-Wan; Park, Hyun-Seo; Kim, Hyung-Jin

doi:10.1016/s0042-207x(02)00761-3

Cited by 84 publications

(42 citation statements)

References 6 publications

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“…Therefore, the study of efficiency was calculated as the ratio between the CCl 4 chromatography signal obtained with the thermal plasma turned-off and the CCl 4 chromatography signal with the thermal plasma turnedon. The presence of the carbon tetrachloride peaks on the chromatograms obtained when a high flow rate of liquid sample was used showed an incomplete pyrolysis of CCl 4 . The ideal aspiration rate of the sample for maintaining equilibrium between the aerosols formed and the plasma to obtain a complete pyrolysis was found at 0.2 mL min -1 .…”

Section: Resultsmentioning

confidence: 98%

“…The gas sample was collected via the needle of the micro syringe (16) from the septum in the central opening of the ampoule by means of the fiber (17) covered with the polymer polydimethylsiloxane (PDMS) of 100 µm thickness. After each procedure to eliminate CCl 4 was carried out, the torch was cleaned because of accumulation of soot from decomposition of CCl 4 and from the graphite electrode.…”

Section: Working Mechanismmentioning

confidence: 99%

“…Such studies report the treatment of organochlorine residues by thermal plasma, [4][5][6][7][8][9][10][11] describing the removal efficiency of the compounds, torch efficiency, treatment time, operational costs and absence of dioxins and furans in the resulting pyrolytic gases.…”

Section: Introductionmentioning

confidence: 99%

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Development of a DC-plasma torch constructed with graphite electrodes and an integrated nebulization system for decomposition of CCl4

Cubas¹,

Carasek²,

Debacher³

et al. 2005

J. Braz. Chem. Soc.

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O presente trabalho consiste no desenvolvimento de uma tocha de plasma de corrente contínua com eletrodos de grafite e sistema de nebulização integrada para a eliminação de resíduos líquidos organoclorados (tetracloreto de carbono) em pequena escala. Os gases resultantes da pirólise do tetracloreto de carbono pelo plasma foram coletados e identificados por cromatografia gasosa acoplada ao espectrômetro de massa (GC-MS) e monitorados por cromatografia gasosa com detecção por ionização de chama (GC-FID). Observou-se que a tecnologia do plasma térmico elimina tetracloreto de carbono, caracterizando-se por baixo custo, simplicidade operacional e dimensões reduzidas, apresentando-se como uma alternativa ambientalmente correta, pois reduz a emissão total de gases organoclorados.This work describes the development of a continuous flow plasma torch with graphite electrodes and an integrated nebulization system for the elimination of organochlorine liquid waste (carbon tetrachloride) on a small scale. The gases resulting from the pyrolysis of the carbon tetrachloride by the plasma were collected and identified by gas chromatography, coupled with mass spectrometry (GC-MS). Monitoring was carried out by gas chromotography with flame ionization detection (GC-FID). It was observed that the thermal plasma technique eliminated the carbon tetrachloride completely, being characterized by low cost, operational simplicity and reduced dimensions. This technique presents a suitable environmentally correct alternative, since it reduces the total emission of organochlorine gases.

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Section: Resultsmentioning

confidence: 98%

Section: Working Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Development of a DC-plasma torch constructed with graphite electrodes and an integrated nebulization system for decomposition of CCl4

Cubas¹,

Carasek²,

Debacher³

et al. 2005

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…Particular interest is plasma processing with steam, which leads to the decomposition of complex heteroatomic organic substances (e.g., chlorinated) with the formation of an appropriate hydride (e.g., hydrogen chloride) [6]. Steam plasma torches were used for gasification of municipal solid waste [7], treatment of polychlorinated biphenyls [8], perfluorinated compound [9], reforming natural gas [10], etc.…”

Section: Introductionmentioning

confidence: 99%

High voltage AC plasma torch operating on vapours of organic substances

Суров

Popov

Serba

et al. 2017

J. Phys.: Conf. Ser.

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“…Electrically generated thermal plasma can reach temperature of ~10,000 o C or more, whereas only an upper temperature limit of 2,000 o C can be achieved by burning fossil fuels [7]. For this reason, thermal plasma has been traditionally used in high temperature and large enthalpy processes [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%