Thermal degradation study of tetrabromobisphenol A under the presence metal oxide: Comparison of bromine fixation ability

Terakado, Osamu; Ohhashi, R.; Hirasawa, Masahiro

doi:10.1016/j.jaap.2011.03.006

Cited by 70 publications

(33 citation statements)

References 14 publications

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“…From the XRD pattern, it was found that the peaks of CaO became weaker while the new peaks of CaBr 2 and CaBr 2 (H 2 O) 6 were observed in the pattern. The existence of CaBr 2 (H 2 O) 6 was attributed to the hygroscopic nature of CaBr 2 (Terakado et al, 2011;Terakado et al, 2013). In addition, the Sb 2 O 3 were detected, which further confirmed the presence of lots of antimony existing in the residues.…”

Section: Effect Of Additives On Bromine and Antimony Contents In The mentioning

confidence: 61%

“…When compared with XRD pattern of RM in Fig. 2 Terakado et al, 2011;Terakado et al, 2013). In addition, it was found that certain amount of Fe 2 O 3 was reduced into Fe 3 O 4 by the hydrogenation reaction.…”

Section: Effect Of Additives On Bromine and Antimony Contents In The mentioning

confidence: 90%

“…Compared with the thermal pyrolysis, the catalytic pyrolysis not only reduces the degradation temperature, but also obtains comparatively high-grade oil fuel without bromine. A wide range of catalysts have been tested for upgrading the quality and debromination of the pyrolysis oil derived from WEEE plastics and brominated flame retardants, such as zeolites Bozi & Blazsó, 2009), FCC catalysts (Hall, Miskolczi, Onwudili & Williams, 2008), metallic oxides (Jung, S. Kim & J. Kim, 2012;Terakado, Ohhashi & Hirasawa, 2011;Terakado, Ohhashi & Hirasawa, 2013), etc. For example, investigated the catalytic pyrolysis of brominated flame-retarded HIPS and ABS by using HY Zeolite and HZSM-5 Zeolite, which could effectively remove the organobromines from the pyrolysis products.…”

Section: Introductionmentioning

confidence: 99%

“…For example, investigated the catalytic pyrolysis of brominated flame-retarded HIPS and ABS by using HY Zeolite and HZSM-5 Zeolite, which could effectively remove the organobromines from the pyrolysis products. Terakado and Hirasawa (2011; used the metal oxides in the pyrolysis of TBBPA and printed circuit boards including brominated flame retardants, respectively. They concluded that the addition of metal oxides could suppress the formation of HBr and brominated organic compounds.…”

Section: Introductionmentioning

confidence: 99%

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Production of Pyrolysis Oil with Low Bromine and Antimony Contents from Plastic Material Containing Brominated Flame Retardants and Antimony Trioxide

H¹,

Shen²,

Harada³

et al. 2014

EER

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Thermal degradation of high impact polystyrene (HIPS) containing brominated flame retardants and antimony trioxide (Sb 2 O 3 ) was conducted at different temperatures with the presence of various additives (red mud, limestone and natural zeolite) in a fixed-bed reactor. The effect of the pyrolysis temperature on the product yield and the bromine content in the oil product was investigated. It was found that the maximum oil yield (84.38 wt.%) was obtained at the pyrolysis temperature of 500 ℃. The pyrolysis temperature had no significant impact on the bromine reduction in the oil products. The bromine in the flame retardant was mainly transferred into the oil products, where the bromine content was in the range of 7.96-8.56 wt.%. With the aim of removing bromine and antimony from the oils, three additives (red mud, limestone and natural zeolite) was used to investigate the influence on the product yield and composition, especially on the bromine and antimony removal ability from the oil products. In this study, it was found that all of the additives could significantly lower the bromine and antimony content in the oils and the red mud was the most effective. The presence of red mud could reduce the bromine and antimony content from 8.21 and 1.84 wt.% when no additive was employed to 0.84 and 0.35 wt.%, respectively. In addition, the distribution and fate of bromine and antimony in the residues were also studied by the SEM-EDX and XRD analysis in detail.

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Section: Effect Of Additives On Bromine and Antimony Contents In The mentioning

confidence: 61%

Section: Effect Of Additives On Bromine and Antimony Contents In The mentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Production of Pyrolysis Oil with Low Bromine and Antimony Contents from Plastic Material Containing Brominated Flame Retardants and Antimony Trioxide

H¹,

Shen²,

Harada³

et al. 2014

EER

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“…The release of these compounds into the environment occurs through manufacturing, recycling, and disposal of various materials [4][5][6][7][8]. They are suspected of causing a variety of adverse effects on people, including hepatoxicity, neurotoxicity, and the potential to disrupt estrogen signaling [4,[9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Comparing Sorption Characteristics of Tetrabromobisphenol-A, Bisphenol-A, and 2,6-Dibromophenol in a Single-Aolute Aystem

Li¹,

Peng²,

Zhang³

et al. 2016

Pol. J. Environ. Stud.

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Tetrabromobisphenol-A (TBBPA) and its analogue compounds (bisphenol-A (BPA) and 2, 6-dibromophenol (2, 6-DBP)) sorption on CTMAB-clays was investigated in this paper through bath experiments. Montmorillonite and kaolinite modified by CTAMB, as the adsorbent, were firstly characterized by XRD, FTIR and SEManalysis. The surface areas was determined using N2 (77K) sorption-desorption analysis. Kinetic studies showed that sorption reached equilibrium in 5 hours and followed the pseudosecond order kinetic model. The intra-particle diffusion model for sorption was also investigated and compared to identify the sorption mechanism. The sorption isotherms, well fitted by Freundlich model, were changed from being non-linear to being linear with intercalating CTMAB into clays, which indicated that CTMAB increased the partition interaction. A combination of partition and specific sorption might be contributed to TBBPA and its composition products sorption mechanism. The Freundlich coefficients (kF) and distribution coefficients (kd) for both two adsorbents were primarily increased by increasing amount of adsorbed CTMAB, while the organic carbon normalized sorption coefficients (koc) did not follow this trend. Meanwhile, 100%CEC-CTMAB-Montmorillonite showed an advantage of removal of the selected compounds than 100%CEC-CTAMB-Kaolinite. The sorption capacity of BPA was bigger than that of 2, 6-DBP in spite of their similar hydrophobicity, which indicated some molecule properties might influence the sorption on CTMAB-clays. Moreover, the negative ∆G0 and ∆H0 indicated the spontaneous and exothermal process. The TBBPA sorption on CTMAB-clays was considerably enhanced in the acid condition.

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Thermal decomposition of tetrabromobisphenol-A containing printed circuit boards in the presence of calcium hydroxide

Kumagai

Grause

Kameda

et al. 2015

J Mater Cycles Waste Manag

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Thermal degradation study of tetrabromobisphenol A under the presence metal oxide: Comparison of bromine fixation ability

Cited by 70 publications

References 14 publications

Production of Pyrolysis Oil with Low Bromine and Antimony Contents from Plastic Material Containing Brominated Flame Retardants and Antimony Trioxide

Production of Pyrolysis Oil with Low Bromine and Antimony Contents from Plastic Material Containing Brominated Flame Retardants and Antimony Trioxide

Comparing Sorption Characteristics of Tetrabromobisphenol-A, Bisphenol-A, and 2,6-Dibromophenol in a Single-Aolute Aystem

Thermal decomposition of tetrabromobisphenol-A containing printed circuit boards in the presence of calcium hydroxide

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