Chlorination and Evaporation Behaviors of PbO-PbCl2 System in Ar-Cl2-O2 Atmosphere

宏行, 松浦; 文孝, 月橋

doi:10.2355/tetsutohagane.93.424

Cited by 1 publication

(3 citation statements)

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“…Selective chlorination and evaporation using waste polyvinyl chloride (PVC) has recently been proposed for the treatment of heavy metals ,,− . A report on the bromination and evaporation of heavy metals by bromine present in BFR-containing waste by the cocombustion of E-waste with municipal solid waste at the TAMARA pilot plant is the only known research to have used the bromination method .…”

Section: Introductionmentioning

confidence: 99%

“…The bromination process could also have advantages for simultaneous recycling of waste plastics containing BFR with solid wastes containing heavy metals, such as plating sludge or metallurgical dusts like zinc and lead-rich electric arc furnace (EAF) dust, a significant amount of which (30% in Japan) is disposed of in landfills because of recovery difficulties (8). The worldwide generation of EAF dust from steel-making companies is estimated to be 4.5 Mtpa or greater, and is increasing every year (9).…”

Section: Introductionmentioning

confidence: 99%

“…The bromination-evaporation process, using well controlled conditions, may also result in repression of the generation of dioxins (8).…”

Section: Introductionmentioning

confidence: 99%

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Studies on Bromination and Evaporation of Zinc Oxide during Thermal Treatment with TBBPA

Grabda

Oleszek-Kudlak

Rzyman

et al. 2009

Environ. Sci. Technol.

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Thermodynamic considerations indicate that base metal oxides such as ZnO, PbO, Cu2O, etc. should easily react with HBr, the main gaseous product from the thermal decomposition of tetrabromobisphenol A (TBBPA), to form low boiling point metallic bromides suitable for volatile separation. In this work a differential scanning calorimeter and laboratory-scale furnace was used to investigate the scope and conditions for the bromination of ZnO by the thermal decomposition of TBBPA. The formed solid, condensed, and gaseous products were analyzed by X-ray diffraction analysis, electron probe microanalysis, inductively coupled plasma analysis, ion chromatography, and gas chromatography coupled with mass spectrometry. The results obtained in this study indicate that the bromination of ZnO occurred at 272 degrees C (DSC) and above 290 degrees C (furnace) with an effectiveness of 41, 64, and 81% dependent on the experimental conditions. Volatilization of the formed ZnBr2 began at 340 degrees C and had a 45% yield at 650 degrees C. This yield corresponded to 28-36% of the original zinc content in the mixture under the present experimental conditions.

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