Pyrolysis and combustion of Aroclor 1254 contaminated dielectric fluids

Addis, G.; Institute, Electric Power Research

doi:10.1016/0045-6535(86)90400-5

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…Addis (1986) reported the PCB destruction efficiency and creation of PCDF formed during the combustion of PCB-contaminated mineral oils, and quantified the formation of PCDFs as a percent of the PCB content in the unburned mineral oil. The experiments were performed iteratively to find the conditions for optimum PCDF formation.…”

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

“…The PCB destruction efficiency at these concentrations ranged from 82 to 90 percent. Because the estimated PCB content of the waste oil, 100 ppm, was closest to the 50 ppm mineral oil mixture used by Addis (1986), the project team assumed that PCDF formation during combustion of waste oils equaled 0.656 percent, and that the PCB destruction efficiency was 88 percent (the low end of the range of PCB destruction efficiencies reported for the 50 ppm PCB in mineral oil by Addis (1986)). Further, Addis (1986) found that PCDF formation during the burning of the 50 ppm PCB in mineral oil was characterized by TASK 3 REPORT July 1999…”

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

“…While no records exist describing the content of the releases from the Burn Tank, laboratory experiments have been performed to measure PCB destruction efficiency and the formation of PCDFs from the combustion of PCB-containing mineral oils under excess oxygen conditions Addis, 1986). Addis (1986) reported the PCB destruction efficiency and creation of PCDF formed during the combustion of PCB-contaminated mineral oils, and quantified the formation of PCDFs as a percent of the PCB content in the unburned mineral oil.…”

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

“…The experiments were performed iteratively to find the conditions for optimum PCDF formation. Addis (1986) used PCB concentrations in mineral oil of 50, 500, and 5000 ppm, resulting in total PCDF formation of 0.656 percent, 0.814 percent, and 1.47 percent, respectively. The PCB destruction efficiency at these concentrations ranged from 82 to 90 percent.…”

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

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Task 3 Report - PCBs in the Environment Near the Oak Ridge Reservation - A Reconstruction of Historical Doses and Health Risks

Price¹,

Widner²,

Bonnevie³

et al. 1999

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Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

Section: Appendix C: Derivation Of Exposure Point Concentrations For mentioning

confidence: 99%

See 2 more Smart Citations

Task 3 Report - PCBs in the Environment Near the Oak Ridge Reservation - A Reconstruction of Historical Doses and Health Risks

Price¹,

Widner²,

Bonnevie³

et al. 1999

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“…The oxidation of PCB produces CO 2 , CO, H 2 O and HCl, and, as a side reaction, also CDD/F. Earlier research recognised the formation of CDD/F precursors (CP -chlorinated phenols and CBz -chlorinated benzenes) in PCB fires [12][13][14]. The yield of PCDD/F usually amounts to around 0.01-1 %, but it may also be as high as 6 % [15,16].…”

Section: Introductionmentioning

confidence: 99%

Formation of Chlorinated Dibenzo-p-dioxins and Dibenzofurans (CDD/F) and Their Precursors in Oxidation of 4-Chlorobiphenyl

Hou¹,

Dlugogorski²,

Altarawneh³

et al. 2013

Proceedings of the Seventh International Seminar Fire and Explosion Hazards

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Formation of Chlorinated Dibenzo-p-dioxins and Dibenzofurans (CDD/F) and Their Precursors in Oxidation of 4-Chlorobiphenyl ABSTRACTThis study investigates the gas-phase thermal oxidation of 4-chlorobiphenyl (4-CB) over a temperature range of 300 to 700 °C, under conditions similar to those occurring in fires and open burning of waste. The experiments deployed an isothermal flow reactor made of high purity quartz and equipped with a sample collection system to adsorb volatile and semi-volatile organic compounds (VOC/SVOC), the latter included chlorinated dibenzo-p-dioxins and dibenzofurans (CDD/F). The analysis was performed by gas chromatography-quadrupole mass spectrometry (GC-QMS) and GCion trap MS/MS (GC-ITMS/MS), for VOC and SVOC, respectively. Under oxidative conditions, the thermal degradation of 4-CB produced VOC species; mainly, naphathelene, styrene, and benzaldehyde. Selected ion monitoring (SIM), performed on the GC-QMS instrument, confirmed the formation of minor species, such as chlorophenols (CP) and chlorobenzenes (CBz), first observed to form in experiments conducted around 500 °C. The trace analysis by GC-ITMS/MS identified mono and dichlorinated isomers of CDD/F (dioxins), with monochlorodibenzofurans (MCDF) as the dominant homologue group. We observed the formation of 3-chlorodibenzofuran at temperature as low as 300 °C, possibly by direct oxidation of 4-CB by singlet oxygen ( 1 Δ g ) generated on the walls of the quartz reactor, or by catalytic oxidation of 4-CB by the transition metals remaining in the high purity quarts at sub-ppm levels. Other CDD/F form in gas-phase reactions at temperature in excess of 600 °C.

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